WO2022263335A1 - Flammgeschützte polycarbonat-zusammensetzungen mit hohem cti - Google Patents
Flammgeschützte polycarbonat-zusammensetzungen mit hohem cti Download PDFInfo
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- WO2022263335A1 WO2022263335A1 PCT/EP2022/065931 EP2022065931W WO2022263335A1 WO 2022263335 A1 WO2022263335 A1 WO 2022263335A1 EP 2022065931 W EP2022065931 W EP 2022065931W WO 2022263335 A1 WO2022263335 A1 WO 2022263335A1
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- phosphorus
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- 239000000203 mixture Substances 0.000 title claims abstract description 130
- 239000004417 polycarbonate Substances 0.000 title claims abstract description 72
- 229920000515 polycarbonate Polymers 0.000 title claims abstract description 71
- 239000003063 flame retardant Substances 0.000 title claims abstract description 45
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 125000003118 aryl group Chemical group 0.000 claims abstract description 37
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 35
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 32
- 239000011574 phosphorus Substances 0.000 claims abstract description 29
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 28
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 27
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 18
- 239000011737 fluorine Substances 0.000 claims abstract description 18
- 229920013617 polymethylmethyacrylimide Polymers 0.000 claims abstract 5
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 54
- -1 C12 aralkyl radical Chemical class 0.000 claims description 45
- 239000000654 additive Substances 0.000 claims description 30
- 239000004020 conductor Substances 0.000 claims description 19
- 150000003254 radicals Chemical class 0.000 claims description 13
- GKTNLYAAZKKMTQ-UHFFFAOYSA-N n-[bis(dimethylamino)phosphinimyl]-n-methylmethanamine Chemical compound CN(C)P(=N)(N(C)C)N(C)C GKTNLYAAZKKMTQ-UHFFFAOYSA-N 0.000 claims description 12
- 239000006082 mold release agent Substances 0.000 claims description 11
- 239000003017 thermal stabilizer Substances 0.000 claims description 10
- 239000003963 antioxidant agent Substances 0.000 claims description 9
- 125000000217 alkyl group Chemical group 0.000 claims description 8
- 239000000975 dye Substances 0.000 claims description 7
- 229920002842 oligophosphate Polymers 0.000 claims description 7
- 239000003381 stabilizer Substances 0.000 claims description 7
- UNXRWKVEANCORM-UHFFFAOYSA-N triphosphoric acid Polymers OP(O)(=O)OP(O)(=O)OP(O)(O)=O UNXRWKVEANCORM-UHFFFAOYSA-N 0.000 claims description 7
- 239000004609 Impact Modifier Substances 0.000 claims description 6
- 239000006096 absorbing agent Substances 0.000 claims description 6
- 239000001023 inorganic pigment Substances 0.000 claims description 6
- 239000012860 organic pigment Substances 0.000 claims description 6
- WCYWZMWISLQXQU-UHFFFAOYSA-N methyl Chemical compound [CH3] WCYWZMWISLQXQU-UHFFFAOYSA-N 0.000 claims description 5
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- 230000000996 additive effect Effects 0.000 claims description 4
- 125000001118 alkylidene group Chemical group 0.000 claims description 4
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- 230000007062 hydrolysis Effects 0.000 claims description 3
- 238000006460 hydrolysis reaction Methods 0.000 claims description 3
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- 230000000052 comparative effect Effects 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 34
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- 125000005028 dihydroxyaryl group Chemical group 0.000 description 18
- 238000000034 method Methods 0.000 description 15
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- 239000004810 polytetrafluoroethylene Substances 0.000 description 15
- 239000000463 material Substances 0.000 description 14
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 14
- 229920000642 polymer Polymers 0.000 description 13
- 239000011734 sodium Substances 0.000 description 11
- UIERETOOQGIECD-UHFFFAOYSA-N Angelic acid Natural products CC=C(C)C(O)=O UIERETOOQGIECD-UHFFFAOYSA-N 0.000 description 10
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 10
- 239000002253 acid Substances 0.000 description 10
- 229920001577 copolymer Polymers 0.000 description 10
- 229910052708 sodium Inorganic materials 0.000 description 10
- UIERETOOQGIECD-ONEGZZNKSA-N tiglic acid Chemical compound C\C=C(/C)C(O)=O UIERETOOQGIECD-ONEGZZNKSA-N 0.000 description 10
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 10
- KKEYFWRCBNTPAC-UHFFFAOYSA-N benzene-dicarboxylic acid Natural products OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 9
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- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 description 8
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 8
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 8
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- 238000010998 test method Methods 0.000 description 7
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 6
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- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 6
- 229910019142 PO4 Inorganic materials 0.000 description 6
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- 150000002367 halogens Chemical class 0.000 description 6
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- 239000000178 monomer Substances 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 235000021317 phosphate Nutrition 0.000 description 6
- 229910052700 potassium Inorganic materials 0.000 description 6
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000005160 1H NMR spectroscopy Methods 0.000 description 5
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 5
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 5
- 229910052794 bromium Inorganic materials 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 5
- 229920000098 polyolefin Polymers 0.000 description 5
- LVTHXRLARFLXNR-UHFFFAOYSA-M potassium;1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate Chemical compound [K+].[O-]S(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F LVTHXRLARFLXNR-UHFFFAOYSA-M 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- UMPGNGRIGSEMTC-UHFFFAOYSA-N 4-[1-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexyl]phenol Chemical compound C1C(C)CC(C)(C)CC1(C=1C=CC(O)=CC=1)C1=CC=C(O)C=C1 UMPGNGRIGSEMTC-UHFFFAOYSA-N 0.000 description 4
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 4
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- VCCBEIPGXKNHFW-UHFFFAOYSA-N biphenyl-4,4'-diol Chemical group C1=CC(O)=CC=C1C1=CC=C(O)C=C1 VCCBEIPGXKNHFW-UHFFFAOYSA-N 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 4
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- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
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- OCKWAZCWKSMKNC-UHFFFAOYSA-N [3-octadecanoyloxy-2,2-bis(octadecanoyloxymethyl)propyl] octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(COC(=O)CCCCCCCCCCCCCCCCC)(COC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC OCKWAZCWKSMKNC-UHFFFAOYSA-N 0.000 description 3
- BQPNUOYXSVUVMY-UHFFFAOYSA-N [4-[2-(4-diphenoxyphosphoryloxyphenyl)propan-2-yl]phenyl] diphenyl phosphate Chemical compound C=1C=C(OP(=O)(OC=2C=CC=CC=2)OC=2C=CC=CC=2)C=CC=1C(C)(C)C(C=C1)=CC=C1OP(=O)(OC=1C=CC=CC=1)OC1=CC=CC=C1 BQPNUOYXSVUVMY-UHFFFAOYSA-N 0.000 description 3
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- 125000000654 isopropylidene group Chemical group C(C)(C)=* 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 3
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- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 3
- 239000013638 trimer Substances 0.000 description 3
- OWICEWMBIBPFAH-UHFFFAOYSA-N (3-diphenoxyphosphoryloxyphenyl) diphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=C(OP(=O)(OC=2C=CC=CC=2)OC=2C=CC=CC=2)C=CC=1)(=O)OC1=CC=CC=C1 OWICEWMBIBPFAH-UHFFFAOYSA-N 0.000 description 2
- ZWWGKYHSHZDTKG-UHFFFAOYSA-N 1,1,1,2,2,3,3,4,4,4-decafluorobutane sulfuric acid Chemical compound OS(O)(=O)=O.FC(F)(F)C(F)(F)C(F)(F)C(F)(F)F ZWWGKYHSHZDTKG-UHFFFAOYSA-N 0.000 description 2
- XXTRBCFGWMRWQG-UHFFFAOYSA-N 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-octadecafluorooctane sulfuric acid Chemical compound OS(O)(=O)=O.FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F XXTRBCFGWMRWQG-UHFFFAOYSA-N 0.000 description 2
- 150000005208 1,4-dihydroxybenzenes Chemical class 0.000 description 2
- YIYBRXKMQFDHSM-UHFFFAOYSA-N 2,2'-Dihydroxybenzophenone Chemical class OC1=CC=CC=C1C(=O)C1=CC=CC=C1O YIYBRXKMQFDHSM-UHFFFAOYSA-N 0.000 description 2
- GXURZKWLMYOCDX-UHFFFAOYSA-N 2,2-bis(hydroxymethyl)propane-1,3-diol;dihydroxyphosphanyl dihydrogen phosphite Chemical compound OP(O)OP(O)O.OCC(CO)(CO)CO GXURZKWLMYOCDX-UHFFFAOYSA-N 0.000 description 2
- VXHYVVAUHMGCEX-UHFFFAOYSA-N 2-(2-hydroxyphenoxy)phenol Chemical class OC1=CC=CC=C1OC1=CC=CC=C1O VXHYVVAUHMGCEX-UHFFFAOYSA-N 0.000 description 2
- BLDLRWQLBOJPEB-UHFFFAOYSA-N 2-(2-hydroxyphenyl)sulfanylphenol Chemical class OC1=CC=CC=C1SC1=CC=CC=C1O BLDLRWQLBOJPEB-UHFFFAOYSA-N 0.000 description 2
- XSVZEASGNTZBRQ-UHFFFAOYSA-N 2-(2-hydroxyphenyl)sulfinylphenol Chemical class OC1=CC=CC=C1S(=O)C1=CC=CC=C1O XSVZEASGNTZBRQ-UHFFFAOYSA-N 0.000 description 2
- QUWAJPZDCZDTJS-UHFFFAOYSA-N 2-(2-hydroxyphenyl)sulfonylphenol Chemical class OC1=CC=CC=C1S(=O)(=O)C1=CC=CC=C1O QUWAJPZDCZDTJS-UHFFFAOYSA-N 0.000 description 2
- CJWNFAKWHDOUKL-UHFFFAOYSA-N 2-(2-phenylpropan-2-yl)phenol Chemical compound C=1C=CC=C(O)C=1C(C)(C)C1=CC=CC=C1 CJWNFAKWHDOUKL-UHFFFAOYSA-N 0.000 description 2
- LIHLSLRANKCHLV-UHFFFAOYSA-N 2-methylbut-2-enoyl 2-methylbut-2-enoate Chemical compound CC=C(C)C(=O)OC(=O)C(C)=CC LIHLSLRANKCHLV-UHFFFAOYSA-N 0.000 description 2
- ODJUOZPKKHIEOZ-UHFFFAOYSA-N 4-[2-(4-hydroxy-3,5-dimethylphenyl)propan-2-yl]-2,6-dimethylphenol Chemical compound CC1=C(O)C(C)=CC(C(C)(C)C=2C=C(C)C(O)=C(C)C=2)=C1 ODJUOZPKKHIEOZ-UHFFFAOYSA-N 0.000 description 2
- RPJFWRZEEKJTGN-UHFFFAOYSA-N 4-[2-(4-hydroxyphenyl)propan-2-yl]-2,6-dimethylphenol Chemical compound CC1=C(O)C(C)=CC(C(C)(C)C=2C=CC(O)=CC=2)=C1 RPJFWRZEEKJTGN-UHFFFAOYSA-N 0.000 description 2
- QHPQWRBYOIRBIT-UHFFFAOYSA-N 4-tert-butylphenol Chemical compound CC(C)(C)C1=CC=C(O)C=C1 QHPQWRBYOIRBIT-UHFFFAOYSA-N 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
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- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 2
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 2
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- 229910052783 alkali metal Inorganic materials 0.000 description 2
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- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
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- 125000005587 carbonate group Chemical group 0.000 description 2
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- ROORDVPLFPIABK-UHFFFAOYSA-N diphenyl carbonate Chemical compound C=1C=CC=CC=1OC(=O)OC1=CC=CC=C1 ROORDVPLFPIABK-UHFFFAOYSA-N 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
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- JXDYKVIHCLTXOP-UHFFFAOYSA-N isatin Chemical compound C1=CC=C2C(=O)C(=O)NC2=C1 JXDYKVIHCLTXOP-UHFFFAOYSA-N 0.000 description 2
- 230000010534 mechanism of action Effects 0.000 description 2
- 125000005395 methacrylic acid group Chemical group 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- GGRIQDPLLHVRDU-UHFFFAOYSA-M potassium;2-(benzenesulfonyl)benzenesulfonate Chemical compound [K+].[O-]S(=O)(=O)C1=CC=CC=C1S(=O)(=O)C1=CC=CC=C1 GGRIQDPLLHVRDU-UHFFFAOYSA-M 0.000 description 2
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- 238000003786 synthesis reaction Methods 0.000 description 2
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- 230000008092 positive effect Effects 0.000 description 1
- 235000019394 potassium persulphate Nutrition 0.000 description 1
- WGKRYHXNEYRYIV-UHFFFAOYSA-M potassium;2-formylbenzenesulfonate Chemical compound [K+].[O-]S(=O)(=O)C1=CC=CC=C1C=O WGKRYHXNEYRYIV-UHFFFAOYSA-M 0.000 description 1
- HGJYOHAIVZXUML-UHFFFAOYSA-M potassium;3-(benzenesulfonyl)benzenesulfonate Chemical compound [K+].[O-]S(=O)(=O)C1=CC=CC(S(=O)(=O)C=2C=CC=CC=2)=C1 HGJYOHAIVZXUML-UHFFFAOYSA-M 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012899 standard injection Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 125000003107 substituted aryl group Chemical group 0.000 description 1
- 150000003459 sulfonic acid esters Chemical class 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 1
- IVIIAEVMQHEPAY-UHFFFAOYSA-N tridodecyl phosphite Chemical compound CCCCCCCCCCCCOP(OCCCCCCCCCCCC)OCCCCCCCCCCCC IVIIAEVMQHEPAY-UHFFFAOYSA-N 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 description 1
- SFENPMLASUEABX-UHFFFAOYSA-N trihexyl phosphate Chemical compound CCCCCCOP(=O)(OCCCCCC)OCCCCCC SFENPMLASUEABX-UHFFFAOYSA-N 0.000 description 1
- DMEUUKUNSVFYAA-UHFFFAOYSA-N trinaphthalen-1-ylphosphane Chemical compound C1=CC=C2C(P(C=3C4=CC=CC=C4C=CC=3)C=3C4=CC=CC=C4C=CC=3)=CC=CC2=C1 DMEUUKUNSVFYAA-UHFFFAOYSA-N 0.000 description 1
- ZOPCDOGRWDSSDQ-UHFFFAOYSA-N trinonyl phosphate Chemical compound CCCCCCCCCOP(=O)(OCCCCCCCCC)OCCCCCCCCC ZOPCDOGRWDSSDQ-UHFFFAOYSA-N 0.000 description 1
- CNUJLMSKURPSHE-UHFFFAOYSA-N trioctadecyl phosphite Chemical compound CCCCCCCCCCCCCCCCCCOP(OCCCCCCCCCCCCCCCCCC)OCCCCCCCCCCCCCCCCCC CNUJLMSKURPSHE-UHFFFAOYSA-N 0.000 description 1
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 1
- LIPMRGQQBZJCTM-UHFFFAOYSA-N tris(2-propan-2-ylphenyl) phosphate Chemical compound CC(C)C1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C(C)C)OC1=CC=CC=C1C(C)C LIPMRGQQBZJCTM-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 125000002256 xylenyl group Chemical group C1(C(C=CC=C1)C)(C)* 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/521—Esters of phosphoric acids, e.g. of H3PO4
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/5399—Phosphorus bound to nitrogen
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Definitions
- the invention relates to flame-retardant thermoplastic compositions based on polycarbonate with high tracking resistance.
- Polycarbonate offers many advantages over other thermoplastic polymers due to its high impact strength, high heat resistance and a certain inherent flame retardancy. Due to this unique property profile, polycarbonate compositions are suitable for a large number of different applications, e.g. in the field of electrical and electronic components. In particular, good insulating properties and high flame retardancy are essential safety-relevant basic requirements for materials used in this area. In applications where the plastic is in direct contact with the electrical conductors, a high resistance to leakage currents under voltage load is required to prevent short circuits and fires within the component.
- Tracking resistance generally describes the resistance of a plastic material to environmental influences.
- the CTI value is a measure of the tendency of a plastic to develop electrically conductive paths on the surface under environmental influences such as moisture and dirt under voltage and to promote the resulting electrical leakage currents.
- the higher the tracking resistance or tracking resistance (the CTI value) of a material the more suitable it is for use in high-voltage applications, e.g. in today's electromobility applications.
- Another advantage of high CTI materials is the possibility that electrical traces in an electronic component can be closer together without risking a short circuit, which in turn enables the reduction of component dimensions and thus more compact designs and weight savings.
- polycarbonate In contrast to other thermoplastic polymers such as polystyrene, polyester, etc., polycarbonate itself has a very low tracking resistance with moderate flame retardance. Because of the high proportion of aromatic structures, polycarbonate has a fairly high tendency to char. The CTI of pure polycarbonate is around 250 V or even lower (F. Acquasanta et al., Polymer Degradation and Stability, 96 (2011), 2098-2103). However, for numerous applications in the electrical/electrical field (EE), eg in the field of electromobility, a high CTI is required for safety reasons. typically of 600 V (corresponding to the insulating material group PLC 0 according to EN 50124), required by the materials used.
- EE electrical/electrical field
- the materials must have a high level of flame resistance, ie a VO classification according to UL 94V, especially with thin walls.
- Pure polycarbonate typically already has a certain intrinsic flame resistance (V2 classification according to UL 94 V), but this is not sufficient for most applications in the EE sector.
- suitable flame retardants is required.
- halogenated sulfonates e.g. Rimar salt (potassium perfluorobutane sulfonate, C4 salt) or KSS salt (potassium diphenyl sulfone-3-sulfonate)
- organic phosphates e.g.
- BDP bisphenol A bis(diphenyl phosphate)
- RDP resorcinol bis (diphenyl phosphate)
- phosphazenes are used.
- the mechanism of action of these flame retardants is based on the formation of a solid, charred surface layer that interrupts the supply of oxygen and thus inhibits the combustion process.
- the underlying effect for good tracking resistance is, among other things, a low tendency for the formation of conductive paths on the surface. This is in direct contrast to the mechanism of action, the "charring", of surface-active flame retardants and thus poses a particular challenge in the coordination of CTI and flame retardancy.
- compositions that achieve a UL94 VO classification of 3 mm, preferably 2 mm, particularly preferably 1.5 mm, and also a high CTI of 600 V in particular, preferably determined according to the Quick test method based on IEC 60112:2009. Due to the area of application and the heat generation in EE components, the compositions should preferably also have good heat resistance, in particular a Vicat softening point, determined according to ISO 306:2014-3, VST Method B, of at least 110°C. In addition, the CTI should preferably be robust, i.e. the high CTI should be reliably achieved at different operating voltages, not only at around 600 V, but also at 300 V or 350 V.
- thermoplastic composition containing
- the invention also relates to moldings produced from the thermoplastic compositions according to the invention, ie moldings consisting of compositions according to the invention thermoplastic compositions or comprising a range of thermoplastic compositions according to the invention.
- Such molded parts are in particular those for which the aforementioned property profile is particularly attractive, ie molded parts that are components or parts of components from the EE sector, in particular parts of high-voltage switches, inverters, relays, electronic connectors, electrical connectors, protective switches, components for Photovoltaic applications, electric motors, heat sinks, chargers and plugs for electric vehicles, electrical junction boxes, smart meter housings, miniature circuit breakers, busbars.
- the component is preferably designed for an operating voltage of at least 400 V.
- the expediently used material preferably has a tracking resistance of at least 600 V, determined as described above using the rapid test method based on IEC 60112:2009.
- the composition according to the invention can contain other components, such as other additives in the form of component E.
- the composition can also contain one or more other thermoplastics as blending partners (component F) which are not covered by any of components A to E.
- component F thermoplastics as blending partners
- the percentages by weight specified for components A, B, C, D and, if appropriate, E and any blending partners, unless explicitly stated otherwise, are each based on the total weight of the composition. It goes without saying that all of the components contained in a composition according to the invention add up to 100% by weight.
- Thermoplastic polymers that are suitable as blend partners and differ from components A, B and possibly E are, for example, polystyrene, styrene copolymers, aromatic polyesters such as polyethylene terephthalate (PET) or polybutylene terephthalate (PBT), PET-cyclohexanedimethanol copolymer (PETG), polyethylene naphthalate (PEN), PMMA and PMMA copolymers as well as copolymers with styrene such as transparent polystyrene acrylonitrile (PSAN) or also thermoplastic polyurethanes.
- PET polyethylene terephthalate
- PBT polybutylene terephthalate
- PEN polyethylene naphthalate
- PMMA and PMMA copolymers as well as copolymers with styrene such as transparent polystyrene acrylonitrile (PSAN) or also thermoplastic poly
- compositions do not contain any further components, but rather the amounts of components A, B, C, D and, if appropriate, E, particularly in the preferred embodiments described, add up to 100% by weight, i.e. H.
- the compositions according to the invention consist of the components A, B, C, D, if necessary E.
- the components used can contain the usual impurities which, for example, result from their production processes. It is preferred to use components that are as pure as possible. It is also understood that these impurities can also be contained in a closed formulation of the composition.
- the compositions according to the invention show no significant leakage current (>0.5 A over 2s) when at least 50 drops of a 0.1% ammonium chloride solution are applied at 375 V, more preferably at 400 V, particularly preferably at 600 V Testing is preferably carried out according to the quick test method described in the description part based on IEC 60112:2009.
- compositions according to the invention preferably have a flame resistance V0 according to UL 94 V in test specimen thicknesses ⁇ 3 mm, more preferably in test specimen thicknesses ⁇ 2 mm, after conditioning the test specimen for 7 days at 50% relative humidity and 70° C. ambient temperature.
- the compositions preferably also have good heat resistance, which is reflected in a Vicat softening point, determined according to ISO 306:2014-3, VST method B, of at least 110.degree.
- Component A of the compositions according to the invention are aromatic polycarbonates.
- Aromatic polycarbonates in the context of the present invention are both homopolycarbonates and copolycarbonates and/or polyester carbonates; the polycarbonates can be linear or branched in a known manner. Mixtures of polycarbonates can also be used according to the invention.
- thermoplastic polycarbonates including the thermoplastic, aromatic polyester carbonates, preferably have weight-average molecular weights M w of from 15,000 g/mol to 40,000 g/mol, more preferably up to 34,000 g/mol, particularly preferably from 17,000 g/mol to 33,000 g/mol. in particular from 19,000 g/mol to 32,000 g/mol, determined by gel permeation chromatography, calibrated against bisphenol A polycarbonate standards under Use of dichloromethane as eluent, calibration with linear polycarbonates (from bisphenol A and phosgene) of known molar mass distribution from PSS Polymer Standards Service GmbH, Germany, calibration according to method 2301-0257502-09D (from 2009 in German) from Currenta GmbH & Co.
- the eluent is dichloromethane.
- the melt volume flow rate, MVR, of the aromatic polycarbonate used, determined according to ISO 1133:2012-03, at a test temperature of 300° C. and a load of 1.2 kg, is preferably 6 to 35 cm 3 /(10 min), more preferably 7 cm 3 / (10 min) to 25 cc/( 10 min), more preferably 9 to 21 cc/( 10 min).
- a portion, up to 80 mol %, preferably from 20 mol % to 50 mol %, of the carbonate groups in the polycarbonates used according to the invention can be replaced by aromatic dicarboxylic acid ester groups.
- aromatic polyester carbonates Such polycarbonates, which contain both acid residues of carbonic acid and acid residues of aromatic dicarboxylic acids built into the molecular chain, are referred to as aromatic polyester carbonates. In the context of the present invention, they are subsumed under the generic term of thermoplastic, aromatic polycarbonates.
- Aromatic polycarbonates are produced, for example, by reacting dihydroxyaryl compounds with carbonic acid halides, preferably phosgene, and/or with aromatic dicarboxylic acid dihalides, preferably benzenedicarboxylic acid dihalides, by the phase interface process, optionally using chain terminators and optionally using trifunctional or more than trifunctional branching agents. Production via a melt polymerization process by reacting dihydroxyaryl compounds with, for example, diphenyl carbonate is also possible. To produce the polyester carbonates, some of the carbonic acid derivatives are replaced by aromatic dicarboxylic acids or derivatives of dicarboxylic acids, depending on the carbonate structural units to be replaced in the aromatic polycarbonates by aromatic dicarboxylic acid ester structural units.
- Dihydroxyaryl compounds suitable for the production of polycarbonates are those of the formula (1)
- Z is an aromatic radical having 6 to 30 carbon atoms, which can contain one or more aromatic nuclei, can be substituted and can contain aliphatic or cycloaliphatic radicals or alkylaryls or heteroatoms as bridge members.
- Z in formula (1) is preferably a radical of formula (2) in the
- R and R 7 are independently H, Ci to Cis-alkyl, Ci to Cis-alkoxy, halogen such as CI or Br or each optionally substituted aryl or aralkyl, preferably H or Ci to CA-alkyl. particularly preferably for H or Ci to Cs-alkyl and very particularly preferably for H or methyl, and
- X for a single bond, -SO2-, -CO-, -O-, -S-, Ci- to G, -alkylene.
- X preferably represents a single bond, C - to C 5 -alkylene, C - to C 5 -alkylidene, C - to C - cycloalkylidene, -O-, -SO-, -CO-, -S-, -S0 2 - or for a radical of formula (3)
- dihydroxyaryl compounds are: dihydroxybenzenes, dihydroxydiphenyls, bis(hydroxyphenyl)alkanes, bis(hydroxyphenyl)cycloalkanes, bis(hydroxyphenyl)aryls, bis(hydroxyphenyl) ethers, bis(hydroxyphenyl) ketones , Bis(hydroxyphenyl) sulfides, bis(hydroxyphenyl) sulfones, bis(hydroxyphenyl) sulfoxides, l,r-bis(hydroxyphenyl)diisopropylbenzenes and their nuclear-kyberted and nuclear-halogenated compounds.
- dihydroxyaryl compounds suitable for producing the polycarbonates are hydroquinone, resorcinol, dihydroxydiphenyls, bis(hydroxyphenyl)alkanes, bis(hydroxyphenyl)cycloalkanes, bis(hydroxyphenyl) sulfides, bis(hydroxyphenyl) ethers, bis( hydroxyphenyl) ketones, bis(hydroxyphenyl) sulfones, bis(hydroxyphenyl) sulfoxides, a-a'-bis(hydroxyphenyl)-diisopropylbenzenes, phthabmidines derived from isatin or phenolphthalein derivatives, and their kemalkyberte, kemelarylated and kemehalogenated Links.
- Preferred dihydroxyaryl compounds are 4,4'-dihydroxydiphenyl, 2,2-bis(4-hydroxyphenyl)propane (bisphenol A), 2,4-bis(4-hydroxyphenyl)-2-methylbutane, 1,1-bis- (4-hydroxyphenyl)-p-diisopropylbenzene, 2,2-bis(3-methyl-4-hydroxyphenyl)propane, dimethyl bisphenol A, bis(3,5-dimethyl-4-hydroxyphenyl)methane, 2 ,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane, bis(3,5-dimethyl-4-hydroxyphenyl)sulfone, 2,4-bis(3,5-dimethyl-4- hydroxyphenyl)-2-methylbutane, 1,1-bis(3,5-dimethyl-4-hydroxyphenyl)-p-diisopropylbenzene and 1.1-bis(4-hydroxyphenyl)-3.3.5-trimethylcyclohexane, and
- dihydroxyaryl compounds are 2,2-bis(4-hydroxyphenyl)propane (bisphenol A), 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane, 1,1-bis(4 -hydroxyphenyl)- cyclohexane, 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, 4,4'-dihydroxydiphenyl and dimethyl bisphenol A and the bisphenols of the formulas (I), (II) and (III).
- bisphenol A 2,2-bis(4-hydroxyphenyl)propane
- 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane 1,1-bis(4 -hydroxyphenyl)- cyclohexane
- 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane 1,4'-dihydroxydiphenyl and dimethyl bisphenol A and the bisphenols of the formulas (I), (II) and
- dihydroxyaryl compounds are, for example, in US Pat DE 1 570 703 A, DE 2063 050 A, DE 2 036 052 A, DE 2 211 956 A and DE 3 832 396 A, in FR 1 561 518 A, in the monograph "H. Schnell, Chemistry and Physics of Polycarbonates, Interscience Publishers, New York 1964" and in JP 62039/1986 A, JP 62040/1986 A and JP 105550/1986 A.
- Suitable carbonic acid derivatives are phosgene or diphenyl carbonate.
- Suitable chain terminators that can be used in the production of the polycarbonates are monophenols.
- suitable monophenols are phenol itself, alkylphenols such as cresols, p-tert-butylphenol, cumylphenol and mixtures thereof.
- Preferred chain terminators are the phenols which are linear or branched, preferably unsubstituted, one or more times with C 1 -C 30 alkyl radicals, or substituted with tert-butyl. Particularly preferred chain terminators are phenol, cumylphenol and/or p-tert-butylphenol.
- the amount of chain terminator to be used is preferably 0.1 to 5 mol %, based on moles of dihydroxyaryl compounds used in each case.
- the chain terminators can be added before, during or after the reaction with a carbonic acid derivative.
- Suitable branching agents are the trifunctional or more than trifunctional compounds known in polycarbonate chemistry, in particular those having three or more than three phenolic OH groups.
- branching agents are 1,3,5-tri(4-hydroxyphenyl)benzene, 1,1,1-tri(4-hydroxyphenyl)ethane, tri(4-hydroxyphenyl)phenylmethane, 2,4- bis-(4-hydroxyphenylisopropyl)-phenol, 2,6-bis-(2-hydroxy-5'-methyl-benzyl)-4-methylphenol, 2-(4-hydroxyphenyl)-2-(2,4-dihydroxyphenyl) -propane, tetra-(4-hydroxyphenyl)methane, tetra-(4-(4-hydroxyphenylisopropyl)phenoxy)methane and 1,4-bis-((4',4"-dihydroxytriphenyl)methyl)benzene and 3,3-bis(3-methyl-4-hydroxyphenyl)-2-oxo-2,3-dihydroindole.
- the amount of any branching agents to be used is preferably 0.05 mol % to 2.00 mol %, based on moles of dihydroxyaryl compounds used in each case.
- the branching agents can either be initially taken with the dihydroxyaryl compounds and the chain terminators in the aqueous-alkaline phase or, dissolved in an organic solvent, can be added before the phosgenation. In the case of the transesterification process, the branching agents are used together with the dihydroxyaryl compounds.
- Particularly preferred polycarbonates are the homopolycarbonate based on bisphenol A, the homopolycarbonate based on 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane and the copolycarbonates based on the two monomers bisphenol A and 1,1 -Bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane or the two monomers bisphenol A and 4,4'-dihydroxydiphenyl, and the dihydroxyaryl compounds of the formulas (I), (II) and/or (III) in which R 'in each case stands for Ci- to Cr-alkyl, aralkyl or aryl, preferably for methyl or phenyl, very particularly preferably for methyl, derived homo- or copolycarbonates, in particular with bisphenol A.
- the aromatic polycarbonate very particularly preferably comprises a bisphenol A -based homopolycarbonate. Most preferably, the aromatic polycarbonate is bisphenol A based homopol
- the total proportion of the monomer units based on the formulas (I), (II), (III), 4,4'-dihydroxydiphenyl and/or bisphenol TMC in the copolycarbonate is preferably 0.1-88 mol %, particularly preferably 1-86 mol -%, very particularly preferably 5-84 mol% and in particular 10-82 mol% (based on the sum of the moles of dihydroxyaryl compounds used).
- the relative solution viscosity of the copolycarbonates determined according to ISO 1628-4: 1999, is preferably in the range from 1.15 to 1.35.
- dihydroxyaryl compounds used can be contaminated with impurities originating from their own synthesis, handling and storage. However, it is desirable to work with raw materials that are as pure as possible. Also preferred are copolycarbonates prepared using diphenols of the general formula (4a):
- R 5 is hydrogen or C 1 to C 4 alkyl, C 1 to C 3 alkoxy, preferably hydrogen; methoxy or methyl,
- R 6 , R 7 , R 8 and R 9 are each independently Ci- to Cr-alkyl or Ce- to Ci2-aryl, preferably methyl or phenyl,
- Z is a C 1 -C 2 -alkylene, preferably C 2 -alkylene, o is an average number of repeating units of 10 to 500, preferably 10 to 100, and m represents an average number of repeating units of 1 to 10, preferably 1 to 6, more preferably 1.5 to 5. It is also possible to use diphenols in which two or more siloxane blocks of the general formula (4a) are linked to one another via terephthalic acid and/or isophthalic acid to form ester groups.
- RI is hydrogen, Ci- to Cr-alkyl, preferably hydrogen or methyl and particularly preferably hydrogen,
- R2 independently for aryl or alkyl, preferably for methyl
- X is a single bond, -SO2-, -CO-, -O-, -S-, Ci- to Ce-alkylene, C2- to CN-alkylidene or for Cr,- to Ci2-arylene, which optionally contains further heteroatoms aromatic rings may be fused, X preferably represents a single bond, Ci- to CV-alkylene. C2 to CV alkylidene.
- X particularly preferably represents a single bond, isopropylidene, C5- to C12-cycloalkylidene or oxygen, and very particularly preferably represents isopropylidene
- n is an average number of 10 to 400, preferably 10 and 100, particularly preferably 15 to 50
- m is an average number of 1 to 10, preferably 1 to 6 and particularly preferably 1.5 to 5.
- the siloxane block can be derived from the following structure
- At least two identical or different siloxane blocks of the general formulas (IV), (V) or (VI) are linked to one another via terephthalic acid and/or isophthalic acid to form ester groups.
- V is C3-alkylene
- R 8 and R 9 are methyl
- q 1
- W is C3-alkylene
- m 1
- R 5 is hydrogen or Ci- to Cr-alkyl, preferably hydrogen or methyl
- R 6 and R 7 are each independently Ci- to Cr-alkyl, preferably methyl
- o stands for 10 to 500.
- Copolycarbonates with monomer units of the formula (4a) and in particular their preparation are described in WO 2015/052106 A2.
- Aromatic dicarboxylic acids suitable for the preparation of the polyester carbonates are, for example, orthophthalic acid, terephthalic acid, isophthalic acid, tert-butyl isophthalic acid, 3,3'-diphenyldicarboxylic acid, 4,4'-diphenyldicarboxylic acid, 4,4-benzophenonedicarboxylic acid, 3,4'-benzophenone dicarboxylic acid, 4,4'-diphenyletherdicarboxylic acid, 4,4'-diphenylsulfonedicarboxylic acid, 2,2-bis(4-carboxyphenyl)propane, trimethyl-3-phenylindane-4,5'-dicarboxylic acid.
- aromatic dicarboxylic acids particular preference is given to using terephthalic acid and/or isophthalic acid.
- dicarboxylic acids are the dicarboxylic acid dihalides and the dicarboxylic acid dialkyl esters, in particular the dicarboxylic acid dichlorides and the dicarboxylic acid dimethyl esters.
- the replacement of the carbonate groups by the aromatic dicarboxylic acid ester groups is essentially stoichiometric and also quantitative, so that the molar ratio of the reaction partners is also found in the finished polyester carbonate.
- the aromatic dicarboxylic acid ester groups can be incorporated either randomly or in blocks.
- compositions according to the invention contain at least 70% by weight, preferably at least 75% by weight, more preferably at least 78% by weight, of aromatic polycarbonate, ie are based on aromatic polycarbonate.
- Component B is PMMI (PMMI: polymethacrylmethylimide).
- PMMI is a thermoplastic which is a partially imidized methacrylic polymer.
- PMMI is obtained in particular by reacting PMMA with methylamine in dispersion or in the melt in a reactor.
- a suitable method is described, for example, in DE 1 077 872 A1.
- imide structures are generated along the polymer chain, with methacrylic anhydride and free methacrylic acid functionalities also being formed, depending on the degree of conversion.
- the proportion of imide functionalities in the PMMI determines the heat resistance of the polymer.
- the degree of implementation can be specifically adjusted.
- PMMI has methyl methacrylate (MMA, 7a), methyl methacrylimide (MMI, 9), methyl methacrylic acid (MMS, 7b) and methyl methacrylic anhydride (MMAH, 8) units. Preference is given to at least 90% by weight, more preferably at least 95% by weight, of the PMMI, based on the total weight of the PMMI, MMA, MMI, MMS and MMAH units.
- the PMMI particularly preferably consists of these building blocks.
- the building blocks and their proportions in the PMMI can be determined in particular by means of quantitative 'H-NMR spectroscopy, based on the clear chemical shift of the R' signals. It is not possible to unambiguously break down the signals of the acid and anhydride monomer building blocks, which is why a combined consideration of these building blocks is recommended.
- the PMMI preferably has an MMI content of at least 30% by weight, preferably at least 35% by weight, more preferably from 35 to 96% by weight, particularly preferably from 36 to 95% by weight of MMI, based on the total weight of the PMMI.
- the MMA content of the PMMI is preferably 3 to 65% by weight, more preferably 4 to 60% by weight, particularly preferably 4.0 to 55% by weight, based on the total weight of the PMMI.
- the total proportion of MMS and MMAH is preferably up to 15% by weight, more preferably up to 12% by weight, particularly preferably 0.5 to 12% by weight, based on the total weight of the PMMI.
- the acid number of the PMMI is preferably 15 to 50 mg KOH/g, more preferably 20 to 45 mg KOH/g, even more preferably 22 to 42 mg KOH/g.
- a highly preferred PMMI has an MMI content of 36.8% by weight, an MMA content of 51.7% by weight and an MMS+MMAH content of 11.5% by weight, each based on that Total weight of PMMI determined by 1H NMR spectroscopy. and an acid number of 22.5 mg KOH/g, determined according to DIN 53240-1:2013-06.
- An alternative, very particularly preferred PMMI copolymer has an MMI content of 83.1% by weight, an MMA content of 13.6% by weight and an MMS+MMAH content of 3.3% by weight. in each case based on the total weight of the PMMI copolymer, determined by means of 'H-NMR spectroscopy. and an acid number of 22.5 mg KOH/g, determined according to DIN 53240-1:2013-06.
- a likewise very particularly preferred alternative PMMI copolymer has an MMI content of 94.8% by weight, an MMA content of 4.6% by weight and an MMS+MMAH content of 0.6% by weight. %, in each case based on the total weight of the PMMI copolymer, determined by means of 'H-NMR spectroscopy, and an acid number of 41.5 mg KOH/g, determined according to DIN 53240-1:2013-06.
- Suitable PMMI is available, for example, from Rohm GmbH under the “ PLEXIMID® ” brand.
- the glass transition temperature of the PMMI determined according to DIN EN ISO 11357-2:2014-07 at a heating rate of 20°C/min, is preferably 130 to 170°C. This means that the PMMI is stable under the processing conditions customary for polycarbonate, including the processing conditions customary for high-temperature-stable polycarbonate copolymers.
- the proportion of PMMI in the compositions according to the invention is 5 to 17.5% by weight, preferably 7 to 17% by weight, more preferably 7.5 to 15% by weight, based on the total weight of the polycarbonate composition. A significant improvement in the CTI can already be seen at 5% by weight of PMMI. 7.5% by weight of PMMI in the polycarbonate composition according to the invention leads to a high CTI of 600 V.
- Component C of the compositions according to the invention is a phosphorus-containing flame retardant. It can be a single phosphorus-containing flame retardant, but also a mixture of different phosphorus-containing flame retardants.
- Preferred phosphorus-containing flame retardants are cyclic phosphazenes, phosphorus compounds of the formula (10) and mixtures thereof:
- R 1 , R 2 , R 3 and R 4 are each independently a C 1 -C 8 -alkyl radical, each optionally halogenated and each branched or unbranched, and/or C 5 -CV cycloalkyl radicals.
- Ce to C20 aryl radical or C7 to C12 aralkyl radical each optionally substituted by branched or unbranched alkyl and/or halogen, preferably chlorine and/or bromine, n is independently 0 or 1, q is from 0 to 30 and X is a mono- or polynuclear aromatic radical having 6 to 30 carbon atoms or a linear or branched aliphatic radical having 2 to 30 carbon atoms, each of which may be substituted or unsubstituted, bridged or unbridged.
- R 1 , R 2 , R 3 and R 4 are preferably each independently branched or unbranched Ci- to Cr-alkyl, phenyl, naphthyl or phenyl substituted with Ci- to Cr-alkyl.
- aromatic groups R 1 , R 2 , R 3 and/or R 4 these can in turn be substituted with branched or unbranched halogen and/or alkyl groups, preferably chlorine, bromine and/or C 1 -C 3 alkyl.
- Particularly preferred aryl radicals are cresyl, phenyl, xylenyl, propylphenyl or butylphenyl and the corresponding brominated and chlorinated derivatives thereof.
- X in formula (10) is preferably derived from dihydroxyaryl compounds.
- X in formula (10) particularly preferably represents
- Xiii (XiV) or their chlorinated and/or brominated derivatives.
- X (with the adjacent oxygen atoms) is preferably derived from hydroquinone, bisphenol A or diphenylphenol.
- X is also preferably derived from resorcinol.
- X is particularly preferably derived from bisphenol A.
- n in the formula (10) is preferably equal to 1.
- q preferably represents 0 to 20, particularly preferably 0 to 10, in the case of mixtures an average value of 0.8 to 5.0, preferably 1.0 to 3.0, more preferably from 1.05 to 2.00 and most preferably from 1.08 to 1.60.
- a compound of the formula (11) is preferred: wherein
- R 1 , R 2 , R 3 and R 4 are each independently a linear or branched Ci to Cs alkyl radical and/or optionally linear or branched alkyl-substituted Cs to Ce cycloalkyl radicals, Ce to Cio aryl radicals or C7 - to Ci2-aralkyl radical, n is independently 0 or 1, q is independently 0, 1, 2, 3 or 4,
- N is a number between 1 and 30,
- R5 and Re are independently linear or branched Ci to Cralkyl radical, preferably methyl radical, and
- Ci to C7 alkylidene a linear or branched Ci to C7 alkylene radical, C5 to Ci2 cycloalkylene radical, C5 to Ci2 cycloalkylidene radical, -O-, -S-, -SO-, SO2 or -CO- mean.
- Phosphorus compounds of the formula (10) are in particular tributyl phosphate, triphenyl phosphate, tricresyl phosphate, diphenyl cresyl phosphate, diphenyloctyl phosphate, diphenyl-2-ethylcresyl phosphate, tri(isopropylphenyl) phosphate, resorcinol bridged oligophosphate and bisphenol A bridged oligophosphate.
- the use of oligomeric phosphoric acid esters of the formula (10) which are derived from bisphenol A is particularly preferred.
- the mean q value is determined by determining the composition of the phosphorus compound mixture (molecular weight distribution) using high pressure liquid chromatography (HPLC) at 40° C. in a mixture of acetonitrile and water (50:50) and calculating the mean values for q from this .
- Phosphorus compounds of this type are known (cf. eg EP 0 363 608 A1, EP 0 640 655 A2) or can be prepared in an analogous manner using known methods (eg Ullmanns Enzyklopädie der Technischen Chemie, Vol. 18, p. 301 et seq., 1979; Houben-Weyl, Methods of Organic Chemistry, Vol. 12/1, p. 43; Beilstein Vol. 6, p. 177).
- cyclic phosphazenes of the formula (13) can be used as component C: in which
- R is the same or different in each case and represents - an amine residue
- Ci an optionally halogenated, preferably fluorine-halogenated, more preferably monohalogenated, Ci to Cs-alkyl radical, preferably methyl radical, ethyl radical, propyl radical or butyl radical,
- Ci to Cs alkoxy radical preferably a methoxy radical, ethoxy radical, propoxy radical or butoxy radical
- Cs- to CV-cycloalkyl radical which is in each case optionally substituted by alkyl, preferably C 1 - to C 1 -C 4 alkyl, and/or halogen, preferably chlorine and/or bromine.
- aryloxy radical preferably phenoxy radical, naphthyloxy radical, each optionally substituted by alkyl, preferably C 1 -C / ralkyl, and/or halogen, preferably chlorine, bromine, and/or hydroxy,
- C7-C12-aralkyl radical preferably phenyl-C1-C12-C12-alkyl radical, which is optionally substituted in each case by alkyl, preferably C1-C1-C10-C1-6C-alkyl, and/or halogen, preferably chlorine and/or bromine, or
- halogen radical preferably chlorine or fluorine
- k is an integer from 1 to 10, preferably a number from 1 to 8, particularly preferred
- phosphazenes are particularly preferably used according to the invention. These are usually mixtures of rings of different ring sizes.
- propoxyphosphazene propoxyphosphazene, phenoxyphosphazene, methylphenoxyphosphazene, aminophosphazene, fluoroalkylphosphazenes and phosphazenes of the following structures:
- the phosphazenes can be used alone or as a mixture.
- the radical R can always be the same or two or more radicals in the formulas can be different.
- the R radicals of a phosphazene are preferably identical.
- the proportion of oligomers with k>8 is preferably from 0 to 2.0 mol %, based on component B, and preferably from 0.10 to 1.00 mol %.
- the phosphazenes of component C meet all three of the aforementioned conditions with regard to the proportions of oligomers.
- n defined as the arithmetic mean of k, is in the range from 1.10 to 1.75, preferably from 1.15 to 1.50, more preferably from 1.20 to 1.45, and especially preferably from 1.20 to 1.40 (range limits included).
- the phosphazenes and their preparation are described, for example, in EP 728 811 A2, DE 1961668 A and WO 97/40092 A1.
- the oligomer compositions in the respective blend samples can be detected and quantified by means of 31 P-NMR (chemical shift; d trimer: 6.5 to 10.0 ppm; d tetramer: -10 to -13.5 ppm; d higher oligomers: -16.5 to -25.0 ppm).
- Component C very particularly preferably comprises bisphenol-A-based oligophosphate of the formula (12) and/or cyclic phosphazene of the formula (13), most preferably component C is bisphenol-A-based oligophosphate of the formula (12) and/or cyclic phosphazene of the formula (12).
- Component C very particularly preferably comprises bisphenol-A-based oligophosphate of the formula (12) and/or cyclic phosphazene of the formula (13), most preferably component C is bisphenol-A-based oligophosphate of the formula (12) and/or cyclic phosphazene of the formula (12).
- the proportion of phosphorus-containing flame retardant in the compositions according to the invention is 3 to 10% by weight, preferably 3 to 8% by weight, more preferably 3.5 to 8% by weight.
- compositions according to the invention contain, as component D, a fluorine-containing anti-drip agent, which can be a mixture of several anti-drip agents.
- a fluorine-containing anti-drip agent which can be a mixture of several anti-drip agents.
- the total amount of anti-drip agent (anti-drip agent) is 0.1% by weight to 1% by weight, in particular 0.10% by weight to 1.0% by weight, preferably 0.3% by weight to 0 8% by weight, particularly preferably 0.4% by weight to 0.6% by weight, of at least one anti-drip agent.
- a fluorine-containing polymer in particular polyolefin, is preferably used as the anti-drip agent.
- the fluorinated polyolefins preferably used as anti-drip agents are of high molecular weight and have glass transition temperatures above -30°C, usually above 100°C, fluorine contents preferably from 65% by weight to 76% by weight, in particular from 70 to 76% by weight. -%.
- Preferred fluorinated polyolefins are polytetrafluoroethylene, polyvinylidene fluoride, tetrafluoroethylene/hexafluoropropylene and ethylene/tetrafluoroethylene copolymers.
- the fluorinated polyolefins are known (cf.
- 3,671,487, 3,723,373 and 3,838,092 They can be prepared by known methods, for example by polymerizing tetrafluoroethylene in an aqueous medium with a catalyst which forms free radicals, for example sodium, potassium or ammonium peroxydisulfate at pressures of 7 to 71 kg/cm 2 and at temperatures of 0 to 200° C, preferably at temperatures from 20 to 100°C. More details are described, for example, in US Pat. No. 2,393,967.
- the density of the fluorinated polyolefins can be between 1.2 and 2.3 g/cm 3 , preferably 2.0 g/cm 3 to 2.3 g/cm 3 'determined according to ISO 1183-1 (2019-09) , the mean particle size between 0.05 and 1000 pm, determined by light microscopy or white light interferometry.
- Suitable tetrafluoroethylene polymer powders are commercially available products and are available, for example, from DuPont under the trade name Teflon®.
- Polytetrafluoroethylene (PTFE) or a PTFE-containing composition is particularly preferably used.
- PTFE is commercially available in various product qualities. These include Hostaflon® TF2021 or PTFE blends such as Blendex® B449 (approx. 50% by weight PTFE and approx. 50% by weight SAN [from 80% by weight styrene and 20% by weight acrylonitrile]) from Chemtura company.
- PTFE or a PTFE/SAN blend is very particularly preferably used as the fluorine-containing anti-drip agent.
- the polycarbonate compositions according to the invention can contain one or more other additives which are different from components B, C and D and are summarized here under “component E”.
- the group of other additives does not include a phosphorus-containing flame retardant according to component C.
- the group of other additives in particular also does not include a fluorine-containing anti-drip agent, since this has already been described as component D.
- Such other additives as are usually added to polycarbonates are, in particular, thermal stabilizers, antioxidants, mold release agents, UV absorbers, IR absorbers, impact modifiers, antistatic agents, flame retardants other than component C, optical brighteners, fillers, light scattering agents, hydrolysis stabilizers, transesterification stabilizers, (Organic) dyes, (organic/inorganic) pigments, compatibilizers, flow improvers and/or additives for laser marking, in particular in the amounts customary for polycarbonate-based compositions.
- additives are described, for example, in EP 0 839 623 A1, WO 96/15102 A1, EP 0 500496 A1 or in the “Plastics Additives Handbook”, Hans Zweifel, 5th Edition 2000, Hanser Verlag, Kunststoff. These additives can be added individually or as a mixture and are preferred additives according to the invention.
- further additives are one or more further additives selected from the group consisting of thermal stabilizers, antioxidants, mold release agents, organic dyes, organic pigments, inorganic pigments.
- the proportion of the other additives is particularly preferably from 0 to 3% by weight.
- At least one thermal stabilizer, one antioxidant and/or one mold release agent is very particularly preferably present as a further additive.
- Such flame retardants are in particular one or more compounds selected from the group consisting of sodium or potassium perfluorobutane sulfate, sodium or potassium perfluoromethanesulfonate, sodium or potassium perfluorooctane sulfate, sodium or potassium 2,5-dichlorobenzene sulfate, sodium or potassium 2,4-sulphate ,5-trichlorobenzene sulfate, sodium or potassium diphenylsulfone sulfonate, sodium or potassium 2-formylbenzenesulfonate, sodium or potassium (N-benzenesulfonyl)benzenesulfonamide or mixtures thereof, of which particular preference is given Sodium or potassium perfluorobutane sulfate, sodium or potassium perfluorooctane sulfate, sodium or potassium diphenylsulfone sulfonate or mixtures thereof, in particular potassium perfluoro-1-butanesulfonate
- Additives present with particular preference are mold release agents, more preferably based on a fatty acid ester, even more preferably based on a stearic ester, particularly preferably based on pentaerythritol.
- Pentaerythritol tetrastearate (PETS) and/or glycerol monostearate (GMS) are particularly preferably used.
- the amount is preferably up to 1.0% by weight (inclusive), more preferably 0.01 to 0.7% by weight, particularly preferably 0.02 to 0.60% by weight. %, based on the
- Additives present with particular preference are also heat stabilizers.
- the amount of thermal stabilizer is preferably up to 0.20% by weight, more preferably 0.01 to 0.10% by weight, even more preferably 0.01 to 0.05% by weight, particularly preferably 0.015 to 0.040% by weight % based on the total composition.
- Phosphorus-based stabilizers selected from the group consisting of phosphates, phosphites, phosphonites, phosphines and mixtures thereof are particularly suitable as thermal stabilizers.
- thermal stabilizers examples are triphenyl phosphite, diphenylalkyl phosphite, phenyldialkyl phosphite, tris(nonylphenyl) phosphite, trilauryl phosphite, trioctadecyl phosphite, distearyl pentaerythritol diphosphite, tris(2,4-di-tert-butylphenyl) phosphite ( Irgafos® 168),
- Diisodecylpentaerythritol diphosphite bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, bis(2,4-di-cumylphenyl)pentaerythritol diphosphite (Doverphos® S-9228), bis(2,6-di-tert-butyl-4-methylphenyl).
- Irganox® B900 mixture of Irgafos® 168 and Irganox® 1076 in a ratio of 4:1
- Doverphos® S-9228 with Irganox® B900 or Irganox® 1076.
- TPP triphenylphosphine
- Irgafos® 168 or tris(nonylphenyl)phosphite or mixtures thereof.
- phenolic antioxidants such as alkylated monophenols, alkylated thioalkylphenols, hydroquinones and alkylated hydroquinones can be used.
- Particularly preferred are Irganox® 1010 (pentaerythritol-3-(4-hydroxy-3,5-di-tert-butylphenyl)propionate; CAS: 6683-19-8) and Irganox 1076® (octadecyl-3-(3,5- di-tert-butyl-4-hydroxyphenyl)propionate) used, preferably in amounts of 0.05-0.5% by weight.
- sulfonic acid esters or alkyl phosphates, z. B. mono-, di- and / or trihexyl phosphate, triisoctyl phosphate and / or trinonyl phosphate are added as transesterification inhibitors.
- Triisooctyl phosphate (tris-2-ethylhexyl phosphate) is preferably used as the alkyl phosphate. Mixtures of different mono-, di- and tri-alkyl phosphates can also be used.
- Triisooctyl phosphate is preferred in amounts of from 0.003% to 0.05%, more preferably from 0.005% to 0.04%, and most preferably from 0.01% to 0.03% by weight % by weight, based on the total composition.
- compositions according to the invention already have an excellent profile of properties without additional impact modifiers. Compositions according to the invention are therefore preferably free from impact modifiers.
- compositions preferred according to the invention consist of
- aromatic polycarbonate more preferably of bisphenol A-based homopolycarbonate
- additives selected from the group consisting of thermal stabilizers, antioxidants, mold release agents, UV absorbers, IR absorbers, antistatic agents, from Component C various flame retardants, optical brighteners, light scattering agents, hydrolysis stabilizers, transesterification stabilizers, organic dyes, organic pigments, inorganic pigments, compatibilizers, flow improvers, additives for laser marking and mixtures thereof.
- compositions which are particularly preferred according to the invention consist of
- aromatic polycarbonate At least 70% by weight of aromatic polycarbonate, the aromatic polycarbonate being very particularly preferably bisphenol A-based homopolycarbonate,
- further additive(s) very particularly preferably selected from the group consisting of heat stabilizers, antioxidants, mold release agents, organic dyes, organic pigments, inorganic pigments.
- a very particularly preferred phosphorus-containing flame retardant is either an organophosphate, in particular one of the formula (12),
- Phosphazene of formula (13g) with k 1, 2 or 3, including mixtures thereof, most preferably in an amount of 4 to 8% by weight. It goes without saying that this is preferably a mixture of different oligomers of this formula, since mixtures are usually commercially available.
- compositions which are extremely preferred according to the invention consist of
- aromatic polycarbonate At least 75% by weight aromatic polycarbonate, where the aromatic polycarbonate is bisphenol A-based homopolycarbonate,
- compositions according to the invention containing the mixed components A, B, C, D and optionally E and optionally further components, can be carried out using powder premixes. It is also possible to use premixes of granules or granules and powders with the additives according to the invention. It is also possible to use premixes which have been produced from solutions of the mixture components in suitable solvents, with the solution being homogenized if necessary and the solvent then being removed.
- additives referred to as component E and also other constituents of the compositions according to the invention can be introduced by known methods or as a masterbatch.
- masterbatches is particularly preferred for introducing additives and other components, masterbatches based on the respective polymer matrix being used in particular.
- compositions according to the invention can be extruded, for example. After extrusion, the extrudate can be cooled and chopped up. The combination and mixing of a premix in the melt can also take place in the plasticizing unit of an injection molding machine. In the subsequent step, the melt is transferred directly into a shaped body.
- Compositions according to the invention are preferably used to produce components from the EE sector, in particular for high-voltage switches, inverters, relays, electronic connectors, electrical connectors, circuit breakers, components for photovoltaic applications, electric motors, heat sinks, chargers or charging plugs for electric vehicles, electrical connection boxes, Smart Meter enclosures, miniature circuit breakers, busbars.
- compositions according to the invention are therefore also corresponding components, comprising elements which consist of compositions according to the invention or areas consisting of compositions according to the invention.
- the component is preferably designed for an operating voltage of at least 375 V, more preferably at least 400 V, in particular at least 500 V. However, it can also be designed for a normal household operating voltage of 230 V ⁇ 23 V in Europe, although smaller distances between the electrical conductors can now be implemented.
- the high tracking resistance of the polycarbonate compositions according to the invention makes it possible, when using the polycarbonate material, to achieve smaller distances between two electrical conductors of a component than has hitherto been possible when using polycarbonate.
- the subject matter of the invention is therefore also an EE component comprising a first electrical conductor and a second electrical conductor at a first distance d1 and a second distance d2 from one another, which is connected via an element made of a thermoplastic composition according to the invention, which is in direct contact with the first electrical conductor and the second electrical conductor, the distance dl being the shortest distance between the first electrical conductor and the second electrical conductor along the surface of the thermoplastic composition element and the distance d2 being the shortest distance between the first electrical conductor and the second electrical conductor through the air, with d2 being selected in such a way that flashover through the air is prevented at the respective operating voltage and where dl at the operating voltage U listed below is: dli(0V ⁇ U ⁇ 250V):
- Such small distances can only be realized with a material that has a CTI of at least 400 V.
- “Element made from a thermoplastic composition according to the invention” means here that an element is present which consists of a thermoplastic composition according to the invention, ie the composition was not mixed with additional components.
- the specified distances dl and d2 can be used in practice for components where, for example due to structural shielding, a degree of protection IP6K9K according to ISO 20653:2013-02 can be maintained.
- thermoplastic compositions belong to insulating group II (400 V ⁇ CTI ⁇ 600 V), very particularly preferred compositions belong to insulating group I (600 V ⁇ CTI), classified according to DIN EN 60664-1.
- Component A-2 Powdery linear polycarbonate based on bisphenol A with a melt volume flow rate of 6 cm 3 /(10 min) (according to ISO 1133:2012-03, at a test temperature of 300° C. and a load of 1.2 kg).
- Component B Polymethacrylmethylimide copolymer from Rohm GmbH (Pleximid® 8803) with a softening point (VST/B 50; ISO 306:2013) of 130°C. Acid number: 22.5 mg KOH/g, determined according to DIN 53240-1:2013-06. Proportion of MMI (methyl methacrylimide): 36.8% by weight, proportion of MMA (methyl methacrylate): 51.7% by weight, proportion of MMS (methyl methacrylic acid)+MMAH (methyl methacrylic anhydride): 11.5% by weight, each based on the total weight of the PMMI and determined by quantitative 'H-NMR spectroscopy.
- Component Cx potassium perfluoro-1-butanesulfonate, commercially available as Bayowet® C4 from Lanxess AG, Leverkusen, Germany, CAS no. 29420-49-3.
- Component Dl Fluorine-containing anti-drip agent. SAN-encapsulated polytetrafluoroethylene ADS5000 (about 50% by weight PTFE and about 50% by weight SAN) from Chemical Innovation Co., Ltd. Thailand.
- Component D-2 Fluorine anti-drip agent. Polytetrafluoroethylene Teflon CFP6000X from Chemours Netherlands B.V.
- Component E-1 mold release agent. Pentaerythritol tetrastearate commercially available as Loxiol VPG 861 from Emery Oleochemicals Group.
- Component E-2 Antioxidant.
- Irganox® B900 from BASF (mixture of Irgafos® 168 (tris-(2,4-di-tert-butylphenyl)phosphite) and Irganox® 1076 (octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl )-propionate) in a weight ratio of 4: 1).
- Irganox® B900 from BASF (mixture of Irgafos® 168 (tris-(2,4-di-tert-butylphenyl)phosphite) and Irganox® 1076 (octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl )-propionate) in a weight ratio of 4: 1).
- Irganox® B900 from BASF (mixture of Irgafos®
- compositions described here were tested using the rapid test method based on IEC 60112:2009.
- a 0.1% ammonium chloride test solution (395 Ohm*cm resistance) was applied dropwise between two adjacent electrodes 4 mm apart on the surface of test specimens measuring 60 mm x 40 mm x 4 mm at an interval of 30 seconds .
- a test voltage was applied between the electrodes, which was varied in the course of the test.
- the first specimen was tested at a starting voltage of 300 V or 350 V.
- a maximum of 50 drops (one drop every 30s) per voltage were applied as long as there was no leakage current > 0.5A over 2s or the sample burned.
- the PTI is tested based on IEC 60112:2009 - modified as described below.
- a 0.1% ammonium chloride test solution (395 Ohm*cm resistance) was applied dropwise between two adjacent electrodes 4 mm apart onto the surface of test specimens measuring 60 mm x 40 mm x 4 mm at an interval of 30 seconds applied.
- a fixed test voltage is applied between the electrodes in the PTI test and a total of 5 test specimens are tested at the respective voltage.
- a maximum of 50 drops (one drop every 30s) were applied per test specimen as long as there was no leakage current > 0.5A for 2s or the specimen burned.
- the test of the flame resistance of the polycarbonate compositions was carried out according to the Underwriter Laboratory Method UL 94 V in thicknesses of 1.5 mm-3 mm.
- the tested test bars were previously conditioned for 7 days at 50% relative humidity and 70°C ambient temperature.
- V0, VI and V2 Different fire classes are assigned depending on the behavior of the test specimens. These include the time it takes for the flame to go out, resistance to dripping or whether a material drips while burning.
- the classes determined according to this are denoted by V0, VI and V2 and are determined on the basis of a total of five tested specimens.
- V0 The test specimen, which is positioned with its longitudinal axis 180° (vertical) to the flame, has an average afterflame time after removal of the flame of no more than 10s and does not produce any dripping plastic particles that ignite cotton wool underneath the test specimen.
- the total afterflame time of five test specimens, each flamed twice, is a maximum of 50s.
- VI In contrast to V0, the average maximum afterflame time is ⁇ 30s, whereby no particles are allowed to drip off and ignite the cotton. The total afterflame time of five test specimens, each flamed twice, is ⁇ 250s.
- V2 In contrast to V0 and VI, this classification produces dripping plastic particles that ignite the cotton.
- the individual afterflame times are ⁇ 30s and the total afterflame time of 5 test specimens, each flamed twice, is ⁇ 250s.
- n.b. The test does not provide a flame retardancy classification if the afterflame times are exceeded.
- the heat resistance of the compositions was determined using the Vicat softening point (method B, test force 50N, heating rate 50 K/h) on test specimens with the dimensions 80 mm x 10 mm x 4 mm in accordance with ISO 306:2014-3. 2. Preparation of the specimens
- compositions were produced on a 25 mm twin-screw extruder from Coperion with a throughput of 20 kg/h.
- the temperatures of the polymer melt in the extruder were between 260-280° C. at an average screw speed of 225 rpm.
- test specimens measuring 60 mm ⁇ 40 mm ⁇ 4 mm were produced from the molding compound using standard injection molding processes at a compound temperature of 280.degree. C. and a mold temperature of 80.degree.
- Table 1 Influence of the PMMI content on the CTI ng: "not measured” (note: V-II with BDP only achieves V2, ie not better here either) Table 1 shows compositions consisting of polycarbonate and different PMMI contents.
- the results of the CTI test measurements show that the tracking resistance of polycarbonate can be significantly improved to 600 V by adding 7.5-15% by weight of PMMI (Examples V-2, V-3, V-4). .
- Even just 5% by weight of PMMI (example V1) noticeably raise the CTI of polycarbonate (250 V) to 375 V.
- a higher proportion of PMMI (Example V-5) again leads to a tracking resistance of 250 V, corresponding to the tracking resistance of pure bisphenol A-based polycarbonate.
- the addition of PMMI has no negative effect on the Vicat softening point of the polycarbonate.
- Table 2 shows compositions of polycarbonate and PMMI in combination with BDP and PTFE.
- the results of the individual compositions show the influence of flame retardants and anti-drip agents both on the tracking resistance and on the fire behavior.
- BDP flame retardants
- anti-drip agents both on the tracking resistance and on the fire behavior.
- the addition of BDP to PC/PMMI blends does not per se lead to a reduction in CTI.
- the high CTI of 600 V still exists (Examples C-11, E-12, E-14, C-15).
- PTFE example E-14
- PTFE/SAN examples E-7, E-8, E-10, E-12, E-13, E-16, E-18
- V-17 the required flame resistance
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EP22731721.1A EP4355827A1 (de) | 2021-06-18 | 2022-06-13 | Flammgeschützte polycarbonat-zusammensetzungen mit hohem cti |
CN202280043469.6A CN117529526A (zh) | 2021-06-18 | 2022-06-13 | 具有高cti的阻燃聚碳酸酯组合物 |
US18/570,806 US20240287306A1 (en) | 2021-06-18 | 2022-06-13 | Flame-Retardant Polycarbonate Compositions Having a High CTI |
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EP (1) | EP4355827A1 (de) |
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-
2022
- 2022-06-13 WO PCT/EP2022/065931 patent/WO2022263335A1/de active Application Filing
- 2022-06-13 US US18/570,806 patent/US20240287306A1/en active Pending
- 2022-06-13 CN CN202280043469.6A patent/CN117529526A/zh active Pending
- 2022-06-13 EP EP22731721.1A patent/EP4355827A1/de active Pending
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CN117529526A (zh) | 2024-02-06 |
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