JP6661703B2 - アクリル系共重合体の製造方法、アクリル系共重合体、およびそれを含む樹脂組成物 - Google Patents
アクリル系共重合体の製造方法、アクリル系共重合体、およびそれを含む樹脂組成物 Download PDFInfo
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- JP6661703B2 JP6661703B2 JP2018132113A JP2018132113A JP6661703B2 JP 6661703 B2 JP6661703 B2 JP 6661703B2 JP 2018132113 A JP2018132113 A JP 2018132113A JP 2018132113 A JP2018132113 A JP 2018132113A JP 6661703 B2 JP6661703 B2 JP 6661703B2
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- 229920006243 acrylic copolymer Polymers 0.000 title claims description 117
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 239000011342 resin composition Substances 0.000 title description 27
- 239000000178 monomer Substances 0.000 claims description 72
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- 125000004432 carbon atom Chemical group C* 0.000 claims description 40
- 239000003431 cross linking reagent Substances 0.000 claims description 34
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 32
- 238000006116 polymerization reaction Methods 0.000 claims description 32
- 239000004094 surface-active agent Substances 0.000 claims description 27
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 24
- 125000006539 C12 alkyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 14
- 125000000217 alkyl group Chemical group 0.000 claims description 14
- MYWOJODOMFBVCB-UHFFFAOYSA-N 1,2,6-trimethylphenanthrene Chemical compound CC1=CC=C2C3=CC(C)=CC=C3C=CC2=C1C MYWOJODOMFBVCB-UHFFFAOYSA-N 0.000 claims description 12
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- HVVWZTWDBSEWIH-UHFFFAOYSA-N [2-(hydroxymethyl)-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(COC(=O)C=C)COC(=O)C=C HVVWZTWDBSEWIH-UHFFFAOYSA-N 0.000 claims description 3
- 125000003545 alkoxy group Chemical group 0.000 claims description 3
- 125000000000 cycloalkoxy group Chemical group 0.000 claims description 3
- CQHKDHVZYZUZMJ-UHFFFAOYSA-N [2,2-bis(hydroxymethyl)-3-prop-2-enoyloxypropyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(CO)COC(=O)C=C CQHKDHVZYZUZMJ-UHFFFAOYSA-N 0.000 claims description 2
- 125000002877 alkyl aryl group Chemical group 0.000 claims description 2
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- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
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- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
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- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 2
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- 239000004156 Azodicarbonamide Substances 0.000 description 1
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
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- 230000032683 aging Effects 0.000 description 1
- 125000005250 alkyl acrylate group Chemical group 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
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- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 1
- 235000019399 azodicarbonamide Nutrition 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- VENJJOGQEGHFPI-UHFFFAOYSA-N butyl prop-2-enoate;2-methylidenehexanoic acid Chemical compound CCCCOC(=O)C=C.CCCCC(=C)C(O)=O VENJJOGQEGHFPI-UHFFFAOYSA-N 0.000 description 1
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- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000006084 composite stabilizer Substances 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
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- KFQVHZMRFUALSW-UHFFFAOYSA-L disodium formaldehyde sulfate Chemical compound [Na+].[Na+].C=O.[O-]S([O-])(=O)=O KFQVHZMRFUALSW-UHFFFAOYSA-L 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010556 emulsion polymerization method Methods 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
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- 239000012760 heat stabilizer Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000002356 laser light scattering Methods 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
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- 235000019333 sodium laurylsulphate Nutrition 0.000 description 1
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- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
Classifications
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- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
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- B29C44/3449—Feeding the blowing agent through the screw
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
- C08F2/26—Emulsion polymerisation with the aid of emulsifying agents anionic
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- 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
- C08F222/00—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 carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
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- C08J9/103—Azodicarbonamide
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- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- C08L33/12—Homopolymers or copolymers of methyl methacrylate
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- 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
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—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 carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/10—Esters
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Description
実施例1
アクリル系共重合体の重合:第1ステップ
攪拌機、温度計、窒素投入口および循環コンデンサが備えられた四口フラスコ反応器を準備し、脱イオン水(deionized water)100重量部、硫酸第一鉄(ferrous sulfate)0.002重量部、およびエチレンジアミン四酢酸二ナトリウム(disodium ethylenediaminetetraacetate)0.04重量部を投入した後、窒素雰囲気下で前記反応器の内温を40℃に維持させた。
前記反応開始後、重合転換率が90%である時点で、アクリル系架橋剤としてペンタエリスリトールテトラアクリレート(pentaerythritol tetraacrylate、PETTA)0.05重量部、界面活性剤としてDNS‐86(アンモニウムサルフェートアリルオキシノニルフェノキシポリ(エチレンオキシ)(10)エーテル(ammonium sulfate allyloxy nonylphenoxy poly(ethyleneoxy)(10)ether))0.5重量部、およびメチルメタクリレート(MMA)5重量部を一度に投入し、開始剤としてt‐ブチルハイドロパーオキサイド(tert‐butyl hydroperoxide)0.001重量部およびホルムアルデヒドスルホキシル酸ナトリウム(sodium formaldehyde sulfoxylate)0.03重量部を一度に投入して、3時間反応を進行させた。前記反応により製造されたアクリル系共重合体ラテックスの総固形分含量(TSC、total solid contents)は35重量%であり、ラテックス中のアクリル系共重合体の平均粒径は160nmであった。
次いで、アクリル系共重合体を粉体の形態で得るために、前記得られたアクリル系共重合体ラテックスを、脱イオン水(deionized water)を用いて固形分を基準として総固形分含量15重量%に希釈し、アクリル系共重合体ラテックスの温度を75℃に上昇させた。これに、硫酸マグネシウム水溶液(濃度10重量%)6重量部を一度に投入し凝集させてスラリーを得た。得られたスラリーをイオン交換水で2〜3回洗浄した後、濾過により洗浄水を除去し、小型の流動層乾燥機を用いて80℃で3時間乾燥させることで、アクリル系共重合体の粉体試料を得た。
前記実施例1において、アクリル系共重合体の重合の第2ステップで、アクリル系架橋剤としてペンタエリスリトールテトラアクリレート(pentaerythritol tetraacrylate)を0.5重量部投入したことを除き、前記実施例1と同様の方法により実施した。
前記実施例1において、アクリル系共重合体の重合の第1ステップで、単量体のプレエマルジョンの製造時に、メチルメタクリレートを80重量部、ブチルアクリレートを15重量部投入したことを除き、前記実施例1と同様の方法により実施した。
前記実施例3において、アクリル系共重合体の重合の第2ステップで、アクリル系架橋剤としてペンタエリスリトールテトラアクリレート(pentaerythritol tetraacrylate)を0.25重量部投入したことを除き、前記実施例3と同様の方法により実施した。
前記実施例3において、アクリル系共重合体の重合の第2ステップで、アクリル系架橋剤としてペンタエリスリトールテトラアクリレート(pentaerythritol tetraacrylate)を0.5重量部投入したことを除き、前記実施例3と同様の方法により実施した。
前記実施例1において、アクリル系共重合体の重合の第1ステップで、単量体のプレエマルジョンの製造時に、メチルメタクリレートを45重量部、ブチルアクリレートを50重量部投入したことを除き、前記実施例1と同様の方法により実施した。
前記実施例1において、アクリル系共重合体の重合の第2ステップで、アクリル系架橋剤であるペンタエリスリトールテトラアクリレート(pentaerythritol tetraacrylate)を投入しなかったことを除き、前記実施例1と同様の方法により実施した。
前記実施例1において、アクリル系共重合体の重合の第2ステップで、アクリル系架橋剤としてペンタエリスリトールテトラアクリレート(pentaerythritol tetraacrylate)を0.01重量部投入したことを除き、前記実施例1と同様の方法により実施した。
前記実施例3において、アクリル系共重合体の重合の第2ステップで、界面活性剤であるDNS‐86を投入しなかったことを除き、前記実施例3と同様の方法により実施した。
前記実施例3において、アクリル系共重合体の重合の第2ステップで、アクリル系架橋剤であるペンタエリスリトールテトラアクリレート(pentaerythritol tetraacrylate)および界面活性剤であるDNS‐86を投入しなかったことを除き、前記実施例3と同様の方法により実施した。
前記実施例3において、アクリル系共重合体の重合の第2ステップで、アクリル系架橋剤としてペンタエリスリトールテトラアクリレート(pentaerythritol tetraacrylate)を1重量部投入したことを除き、前記実施例3と同様の方法により実施した。
前記実施例2において、アクリル系共重合体の重合の第1ステップで、単量体のプレエマルジョンの製造時に、メチルメタクリレートを90重量部、ブチルアクリレートを5重量部投入したことを除き、前記実施例2と同様の方法により実施した。
実験例1
前記実施例1〜5および比較例1〜7のアクリル系共重合体を重合する時に、それぞれの第1ステップおよび第2ステップで製造されたアクリル系共重合体の重量平均分子量を下記の方法により測定し、各ステップ毎に投入された単量体、アクリル系架橋剤、および界面活性剤の含量(重量部)とともに表1に示した。
アクリル系共重合体を塩化ビニル樹脂の加工助剤として用いる際の発泡加工特性を評価するために、塩化ビニル樹脂(LG化学社製、製品名LS080)100重量部に、複合安定剤(ダンスク産業社(DANSUK Industrial Co.,Ltd.)製、製品名KD‐105)5重量部、充填剤として炭酸カルシウム(CaCO3)7重量部、二酸化チタン(TiO2)2重量部、およびワックス状滑剤(製品名AC316A)0.2重量部を添加した後、前記実施例1〜5および比較例1〜7で製造されたそれぞれのアクリル系共重合体5重量部、および発泡剤としてアゾジカルボンアミド(azodicarbonamide)0.8重量部を添加し、ヘンセルミキサーを用いて110℃まで昇温しながら混練させることで、アクリル系共重合体を含む塩化ビニル系樹脂組成物を製造した。その後、発泡特性に係る物性を下記の方法により測定し、表2に示した。
アクリル系共重合体を塩化ビニル樹脂の加工助剤として用いる時の粘着性を評価するために、塩化ビニル樹脂(LG化学社製、製品名LS080、重合度800)100重量部、スズ系安定化剤3重量部、およびステアリン酸カルシウム0.9重量部を常温でヘンセルミキサーに投入し、115℃まで昇温させながら1,000rpmの攪拌速度で混練させた後、40℃まで冷却させてマスターバッチ(master batch)を製造した。前記マスターバッチに、前記実施例1〜5および比較例1〜7で製造されたそれぞれのアクリル系共重合体を3重量部添加した後、常温でさらに混練した。その後、6インチの2‐ロールミルを用いて、粉体混合物100重量部をロール混練温度200℃、ロール回転数14X15rpm、ロール間隔0.3mmの条件下で、4分間加工(milling)した後、ロール表面での粘着性を評価した。この際、剥離されながら全く伸びない場合は5点、剥離されながら殆どが伸びない場合は4点、剥離されながら一部が伸びる場合は3点、剥離されながら殆ど伸びる場合は2点、剥離されない場合は1点とし、粘着性を1点〜5点で評価した。
Claims (3)
- i)単量体の総含量100重量部を基準として、メチル(メタ)アクリレート単量体50重量部〜80重量部、およびC2〜C12アルキル(メタ)アクリレート単量体10重量部〜49重量部を反応器に投入して重合させるステップ(S1)と、
ii)前記(S1)ステップの重合の重合転換率が80%〜90%である時に、単量体の総含量100重量部を基準として、前記メチル(メタ)アクリレート単量体1重量部〜10重量部、アクリル系架橋剤0.01重量部超過〜1重量部未満、および界面活性剤を投入して重合させるステップ(S2)と、を含み、
前記(S2)ステップにおいて重合されたアクリル系共重合体の重量平均分子量が、15,000,000g/mol以上であり、
前記界面活性剤は、下記化学式1で表される、
アクリル系共重合体の製造方法。
(前記化学式1中、
R 1 、R 2 、およびR 3 は、それぞれ独立して、炭素数1〜10のアルキレン基であり、
R 4 は、炭素数1〜30のアルキル基、炭素数5〜30のシクロアルキル基、炭素数6〜30のアリール基、炭素数7〜30のアルキルアリール基、炭素数7〜30のアリールアルキル基、炭素数1〜30のアルキルオキシ基、炭素数5〜30のシクロアルキルオキシ基、炭素数6〜30のアリールオキシ基、炭素数7〜30のアルキルアリールオキシ基、または炭素数7〜30のアリールアルキルオキシ基であり、
nは1〜30から選択される整数である。) - 前記アクリル系架橋剤は、ペンタエリスリトールジアクリレート(pentaerythritol diacrylate)、ペンタエリスリトールトリアクリレート(pentaerythritol triacrylate)、およびペンタエリスリトールテトラアクリレート(pentaerythritol tetraacrylate)からなる群から選択される1つ以上である、請求項1に記載のアクリル系共重合体の製造方法。
- 前記(S1)ステップにおいて重合されたアクリル系共重合体の重量平均分子量が、6,000,000g/mol〜7,000,000g/molである、請求項1または2に記載のアクリル系共重合体の製造方法。
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