JP5862664B2 - 含フッ素共重合体組成物の製造方法 - Google Patents
含フッ素共重合体組成物の製造方法 Download PDFInfo
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- JP5862664B2 JP5862664B2 JP2013518109A JP2013518109A JP5862664B2 JP 5862664 B2 JP5862664 B2 JP 5862664B2 JP 2013518109 A JP2013518109 A JP 2013518109A JP 2013518109 A JP2013518109 A JP 2013518109A JP 5862664 B2 JP5862664 B2 JP 5862664B2
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- Prior art keywords
- fluorine
- solvent
- potassium carbonate
- containing copolymer
- polymerization
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- 229920001577 copolymer Polymers 0.000 title claims description 265
- 229910052731 fluorine Inorganic materials 0.000 title claims description 190
- 239000011737 fluorine Substances 0.000 title claims description 175
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- 239000000203 mixture Substances 0.000 title claims description 132
- 238000004519 manufacturing process Methods 0.000 title claims description 21
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 263
- 239000002904 solvent Substances 0.000 claims description 206
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 131
- 239000000178 monomer Substances 0.000 claims description 117
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- 238000006116 polymerization reaction Methods 0.000 claims description 113
- 125000004432 carbon atom Chemical group C* 0.000 claims description 52
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 claims description 48
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- 125000001153 fluoro group Chemical group F* 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 21
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- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
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- 229910052500 inorganic mineral Inorganic materials 0.000 description 6
- 239000012948 isocyanate Substances 0.000 description 6
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- DSSAWHFZNWVJEC-UHFFFAOYSA-N 3-(ethenoxymethyl)heptane Chemical compound CCCCC(CC)COC=C DSSAWHFZNWVJEC-UHFFFAOYSA-N 0.000 description 5
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- 239000011591 potassium Substances 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
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- 125000003277 amino group Chemical group 0.000 description 3
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- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 3
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- CXWXQJXEFPUFDZ-UHFFFAOYSA-N tetralin Chemical compound C1=CC=C2CCCCC2=C1 CXWXQJXEFPUFDZ-UHFFFAOYSA-N 0.000 description 3
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- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
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- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- UYMKPFRHYYNDTL-UHFFFAOYSA-N ethenamine Chemical compound NC=C UYMKPFRHYYNDTL-UHFFFAOYSA-N 0.000 description 1
- KDBPJFGPBDDBGC-UHFFFAOYSA-N ethenoxymethanol Chemical compound OCOC=C KDBPJFGPBDDBGC-UHFFFAOYSA-N 0.000 description 1
- 239000011210 fiber-reinforced concrete Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 235000019239 indanthrene blue RS Nutrition 0.000 description 1
- UHOKSCJSTAHBSO-UHFFFAOYSA-N indanthrone blue Chemical compound C1=CC=C2C(=O)C3=CC=C4NC5=C6C(=O)C7=CC=CC=C7C(=O)C6=CC=C5NC4=C3C(=O)C2=C1 UHOKSCJSTAHBSO-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910003471 inorganic composite material Inorganic materials 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- GJRQTCIYDGXPES-UHFFFAOYSA-N iso-butyl acetate Natural products CC(C)COC(C)=O GJRQTCIYDGXPES-UHFFFAOYSA-N 0.000 description 1
- FGKJLKRYENPLQH-UHFFFAOYSA-M isocaproate Chemical compound CC(C)CCC([O-])=O FGKJLKRYENPLQH-UHFFFAOYSA-M 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- OQAGVSWESNCJJT-UHFFFAOYSA-N isovaleric acid methyl ester Natural products COC(=O)CC(C)C OQAGVSWESNCJJT-UHFFFAOYSA-N 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 239000006224 matting agent Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- ZQXSMRAEXCEDJD-UHFFFAOYSA-N n-ethenylformamide Chemical compound C=CNC=O ZQXSMRAEXCEDJD-UHFFFAOYSA-N 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 150000002976 peresters Chemical class 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000001739 pinus spp. Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- BWJUFXUULUEGMA-UHFFFAOYSA-N propan-2-yl propan-2-yloxycarbonyloxy carbonate Chemical compound CC(C)OC(=O)OOC(=O)OC(C)C BWJUFXUULUEGMA-UHFFFAOYSA-N 0.000 description 1
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 1
- 235000015096 spirit Nutrition 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 150000003505 terpenes Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert-Butyl hydroperoxide Substances CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 1
- WMOVHXAZOJBABW-UHFFFAOYSA-N tert-butyl acetate Chemical compound CC(=O)OC(C)(C)C WMOVHXAZOJBABW-UHFFFAOYSA-N 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229940036248 turpentine Drugs 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
-
- 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
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F14/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F14/18—Monomers containing fluorine
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/18—Monomers containing fluorine
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/18—Monomers containing fluorine
- C08F214/186—Monomers containing fluorine with non-fluorinated comonomers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/18—Monomers containing fluorine
- C08F214/24—Trifluorochloroethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/18—Monomers containing fluorine
- C08F214/24—Trifluorochloroethene
- C08F214/245—Trifluorochloroethene with non-fluorinated comonomers
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- 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
- C08K5/01—Hydrocarbons
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- Chemical & Material Sciences (AREA)
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Paints Or Removers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polymerisation Methods In General (AREA)
Description
本発明の含フッ素共重合体組成物は、フルオロオレフィンに基づく繰り返し単位とフッ素原子を有しない単量体に基づく繰り返し単位とを有する含フッ素共重合体(A)(以下、「含フッ素共重合体(A)」という)、炭酸カリウム及び有機溶媒を含有する組成物であって、炭酸カリウムの含有量が上記含フッ素共重合体(A)に対してK2O換算値で5〜80ppmである組成物である。
本願において含フッ素共重合体(A)は、フルオロオレフィン(以下、「フルオロオレフィン(a1)」ともいう。)に基づく繰り返し単位とフッ素原子を有しない単量体に基づく繰り返し単位とを有する共重合体である。含フッ素共重合体(A)に含有されるフルオロオレフィン(a1)は、1種のみでもよく、2種以上でもよい。
本発明におけるフルオロオレフィン(a1)は、オレフィン炭化水素の炭素原子に結合している水素原子の一部又は全部がフッ素原子で置換されている化合物である。フルオロオレフィン(a1)は、塩素等のフッ素原子以外のハロゲン原子を有していてもよい。フルオロオレフィン(a1)に含まれているフッ素原子数は2以上が好ましく、2〜6がより好ましく、3〜4がさらに好ましい。該フッ素原子数が2以上であると、本発明の含フッ素共重合体組成物を塗料として用いた場合、得られた塗膜の耐候性が充分となる。
本発明における架橋性基を有する単量体(a2)は、フッ素原子を有しない架橋性基を有する単量体であり、上記フルオロオレフィン(a1)と共重合可能な二重結合を有する単量体である。
CH2=CX(CH2)n−Q−R−Y (1)
本発明における含フッ素共重合体(A)は、上記フルオロオレフィン(a1)及び上記架橋性基を有する単量体(a2)以外に、本願の含フッ素共重合体組成物の硬度や柔軟性を調整する目的で、これら以外の、フッ素原子及び架橋性基を有しない単量体(a3)を用いて得られる共重合体としてもよい。単量体(a3)は、上記フルオロオレフィン(a1)と上記架橋性基を有する単量体(a2)と共重合可能な二重結合を有する単量体である。
CH2=CX(CH2)n−Q−R−H (2)
本発明の含フッ素共重合体組成物は、有機溶媒を含有する。有機溶媒は、炭酸カリウムの含有量を含フッ素共重合体(A)に対してK2O換算で5〜80ppmとすることができる溶媒であれば特に限定されない。
本発明の含フッ素共重合体組成物の製造方法は以下(1)〜(3)の工程を含む。
本発明の含フッ素共重合体組成物の製造方法における重合工程は、フルオロオレフィン、及びフッ素原子を有しない単量体を含む単量体混合物を、ラジカル重合開始剤、炭酸カリウム、炭素数1〜6のアルコール溶媒と該炭素数1〜6のアルコール溶媒以外の溶媒とを含有する重合溶媒の存在下に、前記炭酸カリウムの少なくとも一部が上記重合溶媒に溶解した状態で共重合させて、含フッ素共重合体(A)の溶液を得る工程である。
上記(1)重合工程後に、上記炭素数1〜6のアルコール溶媒を除去して、好ましくは重合溶媒に対して0〜0.03質量%に低減し、炭酸カリウムを溶液中に析出させる工程を行う。
本発明の含フッ素共重合体組成物の製造方法における炭酸カリウム低減工程は、上記(2)炭酸カリウム析出工程で得られた、アルコール溶媒を除去した含フッ素共重合体(A)の溶液を濾過して、溶解していない炭酸カリウムを除去して、溶液(組成物)中の炭酸カリウムの含有量を含フッ素共重合体(A)に対してK2O換算で5〜80ppmとした含フッ素共重合体組成物を得る工程である。
本発明の含フッ素共重合体組成物は、クリア塗料として好適に用いることができる。本発明の含フッ素共重合体組成物を塗料として用いる場合、硬化剤、上記含フッ素共重合体(A)以外の樹脂等の塗料配合成分をさらに含むことが好ましい。これらは2種以上を併用しても良い。
硬化剤としては、含フッ素共重合体(A)中の架橋性基を有する単量体(a2)が有する架橋性基と架橋可能な硬化剤が好ましい。
含フッ素共重合体(A)以外の樹脂は、塗料に配合される公知の樹脂を適宜用いることができる。
その他にも、添加物としてシランカップリング剤、紫外線吸収剤、硬化促進剤、光安定剤、着色剤、つや消し剤等、塗料に配合される公知の成分を必要に応じて配合することができる。
(カリウム濃度の測定)
カリウム濃度の測定は、原子吸光度測定法を用いて行うが、具体的には、試料を有機溶媒に希釈してカリウムイオンを水に抽出し、炎光光度計でカリウムイオンを測定する。定量は原子吸光度用標準液の塩化カリウム水溶液で検量線を作製して行った。
含フッ素共重合体(A)の数平均分子量は、ポリスチレンを標準物質としてゲルパーミエーションクロマトグラフィー(GPC)で測定した。
重合溶媒に対する炭素数1〜6のアルコール溶媒の含有量は、GC分析により確認した。
純度98%以上のp−キシレンと純度98%以上のエチルベンゼンを用いて、混合キシレンの調製を行った。
混合キシレンB:エチルベンゼン濃度10質量%
混合キシレンC:エチルベンゼン濃度80質量%
混合キシレンD:エチルベンゼン濃度5質量%
*1:混合キシレンAとはo−、m−、p−キシレンが50質量%とエチルベンゼンが50質量%の工業用キシレンを使用した。
(実施例1)
攪拌機が装着された内容積2500mLのステンレス鋼製耐圧反応器に、上記で調製した混合キシレンA587g、エタノール168g、エチルビニルエーテル(EVE)206g、4−ヒドロキシブチルビニルエーテル(HBVE)129g、シクロヘキシルビニルエーテル(CHVE)208g、炭酸カリウム11g及びtert−ブチルパーオキシピバレート(PBPV)3.5gを仕込み、窒素による加圧・パージ及び脱気により液中の溶存酸素を除去した。
攪拌機が装着された内容積2500mLのステンレス鋼製耐圧反応器に、上記で調製した混合キシレンA668g、エタノール188g、2−エチルヘキシルビニルエーテル(2EHVE)195g、4−ヒドロキシブチルビニルエーテル(HBVE)87g、シクロヘキシルビニルエーテル(CHVE)272g、炭酸カリウム10g及びtert−ブチルパーオキシピバレート(PBPV)3.5gを仕込み、窒素による加圧・パージ及び脱気により液中の溶存酸素を除去した。
攪拌機が装着された内容積2500mLのステンレス鋼製耐圧反応器に、上記で調製した混合キシレンA674g、エタノール190g、エチルビニルエーテル(EVE)308g、4−ヒドロキシブチルビニルエーテル(HBVE)124g、炭酸カリウム13g及びtert−ブチルパーオキシピバレート(PBPV)3.5gを仕込み、窒素による加圧・パージ及び脱気により液中の溶存酸素を除去した。
攪拌機が装着された内容積2500mLのステンレス鋼製耐圧反応器に、上記で調製した混合キシレンB587g、エタノール168g、エチルビニルエーテル(EVE)206g、4−ヒドロキシブチルビニルエーテル(HBVE)129g、シクロヘキシルビニルエーテル(CHVE)208g、炭酸カリウム11g及びtert−ブチルパーオキシピバレート(PBPV)3.5gを仕込み、窒素による加圧・パージ及び脱気により液中の溶存酸素を除去した。
攪拌機が装着された内容積2500mLのステンレス鋼製耐圧反応器に、上記で調製した混合キシレンC587g、エタノール168g、エチルビニルエーテル(EVE)206g、4−ヒドロキシブチルビニルエーテル(HBVE)129g、シクロヘキシルビニルエーテル(CHVE)208g、炭酸カリウム11g及びtert−ブチルパーオキシピバレート(PBPV)3.5gを仕込み、窒素による加圧・パージ及び脱気により液中の溶存酸素を除去した。
攪拌機が装着された内容積2500mLのステンレス鋼製耐圧反応器に、エチルベンゼン587g、エタノール168g、エチルビニルエーテル(EVE)206g、4−ヒドロキシブチルビニルエーテル(HBVE)129g、シクロヘキシルビニルエーテル(CHVE)208g、炭酸カリウム11g及びtert−ブチルパーオキシピバレート(PBPV)3.5gを仕込み、窒素による加圧・パージ及び脱気により液中の溶存酸素を除去した。
攪拌機が装着された内容積2500mLのステンレス鋼製耐圧反応器に、上記で調製した混合キシレンA587g、エタノール168g、エチルビニルエーテル(EVE)206g、4−ヒドロキシブチルビニルエーテル(HBVE)129g、シクロヘキシルビニルエーテル(CHVE)208g、炭酸カリウム11g及びtert−ブチルパーオキシピバレート(PBPV)3.5gを仕込み、窒素による加圧・パージ及び脱気により液中の溶存酸素を除去した。
攪拌機が装着された内容積2500mLのステンレス鋼製耐圧反応器に、上記で調製した混合キシレンA587g、エタノール168g、エチルビニルエーテル(EVE)206g、4−ヒドロキシブチルビニルエーテル(HBVE)129g、シクロヘキシルビニルエーテル(CHVE)208g、炭酸カリウム11g及びtert−ブチルパーオキシピバレート(PBPV)3.5gを仕込み、窒素による加圧・パージ及び脱気により液中の溶存酸素を除去した。
攪拌機が装着された内容積2500mLのステンレス鋼製耐圧反応器に、上記で調製した混合キシレンA587g、エタノール168g、エチルビニルエーテル(EVE)206g、4−ヒドロキシブチルビニルエーテル(HBVE)129g、シクロヘキシルビニルエーテル(CHVE)208g、炭酸カリウム11g及びtert−ブチルパーオキシピバレート(PBPV)3.5gを仕込み、窒素による加圧・パージ及び脱気により液中の溶存酸素を除去した。
攪拌機が装着された内容積2500mLのステンレス鋼製耐圧反応器に、上記で調製した混合キシレンA587g、エタノール168g、エチルビニルエーテル(EVE)206g、4−ヒドロキシブチルビニルエーテル(HBVE)129g、シクロヘキシルビニルエーテル(CHVE)208g、炭酸カリウム11g及びtert−ブチルパーオキシピバレート(PBPV)3.5gを仕込み、窒素による加圧・パージ及び脱気により液中の溶存酸素を除去した。
攪拌機が装着された内容積2500mLのステンレス鋼製耐圧反応器に、上記で調製した混合キシレンD587g、エタノール168g、エチルビニルエーテル(EVE)206g、4−ヒドロキシブチルビニルエーテル(HBVE)129g、シクロヘキシルビニルエーテル(CHVE)208g、炭酸カリウム11g及びtert−ブチルパーオキシピバレート(PBPV)3.5gを仕込み、窒素による加圧・パージ及び脱気により液中の溶存酸素を除去した。
上記で得られた実施例1〜6及び比較例1〜5の含フッ素共重合体組成物の貯蔵安定性、外観の評価を以下のように行った結果を表1に示す。なお、各含フッ素共重合体組成物の配合量、濾過工程で用いた珪藻土等についても表1に示す。
得られた含フッ素共重合体組成物を70℃で14日間の条件で貯蔵した後の溶液を目視で観察し、ゲル化の有無を評価した。
得られた含フッ素共重合体組成物を目視で観察し、ヘイズの度合いを評価した。
本出願は、2011年5月30日出願の日本特許出願2011−120523に基づくものであり、その内容はここに参照として取り込まれる。
Claims (4)
- 下記の重合工程、炭酸カリウム析出工程及び炭酸カリウム低減工程を有する、含フッ素重合体組成物の製造方法。
重合工程:フルオロオレフィン、フッ素原子を有しない単量体を含む単量体混合物を、ラジカル重合開始剤、炭酸カリウム、及び炭素数1〜6のアルコール溶媒と該アルコール溶媒以外の溶媒とを含有する重合溶媒の存在下に、前記炭酸カリウムの少なくとも一部が前記重合溶媒に溶解した状態で共重合させて、含フッ素共重合体(A)の溶液を得る工程。
炭酸カリウム析出工程:前記含フッ素共重合体(A)の溶液から前記炭素数1〜6のアルコール溶媒を除去して、該炭素数1〜6のアルコール溶媒の含有量を、重合溶媒に対して0〜0.03質量%に低減し、炭酸カリウムを溶液中に析出させる工程。
炭酸カリウム低減工程:前記炭酸カリウム析出工程で得た含フッ素共重合体(A)の溶液を濾過して、溶解していない炭酸カリウムを除去し、溶液中の炭酸カリウムの含有量を含フッ素共重合体(A)に対してK2O換算で5〜80ppmに低減する工程。 - 前記重合工程における、前記炭酸カリウムと単量体混合物中の全単量体との質量比率(炭酸カリウム/単量体混合物中の全単量体)が0.005/1〜0.013/1である請求項1に記載の含フッ素重合体組成物の製造方法。
- 前記重合工程において、前記炭素数1〜6のアルコール溶媒の含有量が、重合溶媒に対して10〜95質量%である請求項1又は2に記載の含フッ素共重合体組成物の製造方法。
- 前記炭素数1〜6のアルコール溶媒以外の溶媒が、エチルベンゼンと必要に応じてキシレンを含有し、かつ重合溶媒中のエチルベンゼンとキシレンの質量比率(エチルベンゼン/キシレン)が10/90〜100/0である請求項1〜3のいずれか一項に記載の含フッ素重合体組成物の製造方法。
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