WO2019239878A1 - アクリル系ブロック共重合体ペレットの製造方法 - Google Patents
アクリル系ブロック共重合体ペレットの製造方法 Download PDFInfo
- Publication number
- WO2019239878A1 WO2019239878A1 PCT/JP2019/021099 JP2019021099W WO2019239878A1 WO 2019239878 A1 WO2019239878 A1 WO 2019239878A1 JP 2019021099 W JP2019021099 W JP 2019021099W WO 2019239878 A1 WO2019239878 A1 WO 2019239878A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- block copolymer
- acrylic
- aqueous dispersion
- pellet
- acrylic resin
- Prior art date
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- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 title claims abstract description 160
- 239000008188 pellet Substances 0.000 title claims abstract description 148
- 229920001400 block copolymer Polymers 0.000 title claims abstract description 141
- 238000004519 manufacturing process Methods 0.000 title claims description 52
- 239000002245 particle Substances 0.000 claims abstract description 112
- 239000006185 dispersion Substances 0.000 claims abstract description 99
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 85
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 85
- 229920000642 polymer Polymers 0.000 claims abstract description 81
- 239000002994 raw material Substances 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000004094 surface-active agent Substances 0.000 claims abstract description 13
- 125000005250 alkyl acrylate group Chemical group 0.000 claims abstract description 6
- 238000009826 distribution Methods 0.000 claims description 42
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical group COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 29
- 239000007787 solid Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 abstract description 57
- 230000001464 adherent effect Effects 0.000 abstract 1
- 239000000178 monomer Substances 0.000 description 31
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 30
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 30
- -1 alkyl acrylate ester Chemical class 0.000 description 24
- 239000000243 solution Substances 0.000 description 24
- 230000000052 comparative effect Effects 0.000 description 23
- 238000011156 evaluation Methods 0.000 description 23
- 238000010298 pulverizing process Methods 0.000 description 23
- 238000005187 foaming Methods 0.000 description 21
- 238000006116 polymerization reaction Methods 0.000 description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- 239000007788 liquid Substances 0.000 description 15
- 229920000428 triblock copolymer Polymers 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 13
- 239000000203 mixture Substances 0.000 description 13
- 230000000704 physical effect Effects 0.000 description 12
- 238000003756 stirring Methods 0.000 description 12
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 11
- WGOPGODQLGJZGL-UHFFFAOYSA-N lithium;butane Chemical compound [Li+].CC[CH-]C WGOPGODQLGJZGL-UHFFFAOYSA-N 0.000 description 11
- 239000003795 chemical substances by application Substances 0.000 description 10
- 125000000524 functional group Chemical group 0.000 description 10
- 239000002244 precipitate Substances 0.000 description 10
- 239000000047 product Substances 0.000 description 10
- 229910002012 Aerosil® Inorganic materials 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 9
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 8
- 239000000839 emulsion Substances 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 125000001424 substituent group Chemical group 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 7
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 238000005227 gel permeation chromatography Methods 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 6
- 238000010539 anionic addition polymerization reaction Methods 0.000 description 6
- 239000006260 foam Substances 0.000 description 6
- 230000009477 glass transition Effects 0.000 description 6
- 229920002554 vinyl polymer Polymers 0.000 description 6
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 5
- 125000000217 alkyl group Chemical group 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 239000000470 constituent Substances 0.000 description 5
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- 238000001125 extrusion Methods 0.000 description 5
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 4
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 4
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 4
- 206010011416 Croup infectious Diseases 0.000 description 4
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 4
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 125000005396 acrylic acid ester group Chemical group 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- ANISOHQJBAQUQP-UHFFFAOYSA-N octyl prop-2-enoate Chemical compound CCCCCCCCOC(=O)C=C ANISOHQJBAQUQP-UHFFFAOYSA-N 0.000 description 4
- 239000003505 polymerization initiator Substances 0.000 description 4
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical compound CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 4
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 3
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 150000001339 alkali metal compounds Chemical class 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 3
- KBLWLMPSVYBVDK-UHFFFAOYSA-N cyclohexyl prop-2-enoate Chemical compound C=CC(=O)OC1CCCCC1 KBLWLMPSVYBVDK-UHFFFAOYSA-N 0.000 description 3
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethanethiol Chemical compound CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 description 3
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- LNMQRPPRQDGUDR-UHFFFAOYSA-N hexyl prop-2-enoate Chemical compound CCCCCCOC(=O)C=C LNMQRPPRQDGUDR-UHFFFAOYSA-N 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- PBOSTUDLECTMNL-UHFFFAOYSA-N lauryl acrylate Chemical compound CCCCCCCCCCCCOC(=O)C=C PBOSTUDLECTMNL-UHFFFAOYSA-N 0.000 description 3
- 239000003607 modifier Substances 0.000 description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 3
- WGOROJDSDNILMB-UHFFFAOYSA-N octatriacontanediamide Chemical compound NC(=O)CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC(N)=O WGOROJDSDNILMB-UHFFFAOYSA-N 0.000 description 3
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 description 3
- 239000007870 radical polymerization initiator Substances 0.000 description 3
- 229920005604 random copolymer Polymers 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 3
- RMVRSNDYEFQCLF-UHFFFAOYSA-N thiophenol Chemical compound SC1=CC=CC=C1 RMVRSNDYEFQCLF-UHFFFAOYSA-N 0.000 description 3
- XOALFFJGWSCQEO-UHFFFAOYSA-N tridecyl prop-2-enoate Chemical compound CCCCCCCCCCCCCOC(=O)C=C XOALFFJGWSCQEO-UHFFFAOYSA-N 0.000 description 3
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- PMBXCGGQNSVESQ-UHFFFAOYSA-N 1-Hexanethiol Chemical compound CCCCCCS PMBXCGGQNSVESQ-UHFFFAOYSA-N 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 2
- JTHZUSWLNCPZLX-UHFFFAOYSA-N 6-fluoro-3-methyl-2h-indazole Chemical compound FC1=CC=C2C(C)=NNC2=C1 JTHZUSWLNCPZLX-UHFFFAOYSA-N 0.000 description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- 238000005481 NMR spectroscopy Methods 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 2
- IAXXETNIOYFMLW-COPLHBTASA-N [(1s,3s,4s)-4,7,7-trimethyl-3-bicyclo[2.2.1]heptanyl] 2-methylprop-2-enoate Chemical compound C1C[C@]2(C)[C@@H](OC(=O)C(=C)C)C[C@H]1C2(C)C IAXXETNIOYFMLW-COPLHBTASA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 125000005907 alkyl ester group Chemical group 0.000 description 2
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 2
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- WQAQPCDUOCURKW-UHFFFAOYSA-N butanethiol Chemical compound CCCCS WQAQPCDUOCURKW-UHFFFAOYSA-N 0.000 description 2
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- 229920001577 copolymer Polymers 0.000 description 2
- 239000007822 coupling agent Substances 0.000 description 2
- OIWOHHBRDFKZNC-UHFFFAOYSA-N cyclohexyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC1CCCCC1 OIWOHHBRDFKZNC-UHFFFAOYSA-N 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 150000001993 dienes Chemical class 0.000 description 2
- GMSCBRSQMRDRCD-UHFFFAOYSA-N dodecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCOC(=O)C(C)=C GMSCBRSQMRDRCD-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
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- 229940119545 isobornyl methacrylate Drugs 0.000 description 2
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 2
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- ZCSHNCUQKCANBX-UHFFFAOYSA-N lithium diisopropylamide Chemical compound [Li+].CC(C)[N-]C(C)C ZCSHNCUQKCANBX-UHFFFAOYSA-N 0.000 description 2
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- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
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- 230000000379 polymerizing effect Effects 0.000 description 2
- KJRCEJOSASVSRA-UHFFFAOYSA-N propane-2-thiol Chemical compound CC(C)S KJRCEJOSASVSRA-UHFFFAOYSA-N 0.000 description 2
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- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- KEROTHRUZYBWCY-UHFFFAOYSA-N tridecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCCOC(=O)C(C)=C KEROTHRUZYBWCY-UHFFFAOYSA-N 0.000 description 2
- JHPBZFOKBAGZBL-UHFFFAOYSA-N (3-hydroxy-2,2,4-trimethylpentyl) 2-methylprop-2-enoate Chemical group CC(C)C(O)C(C)(C)COC(=O)C(C)=C JHPBZFOKBAGZBL-UHFFFAOYSA-N 0.000 description 1
- LGXVIGDEPROXKC-UHFFFAOYSA-N 1,1-dichloroethene Chemical class ClC(Cl)=C LGXVIGDEPROXKC-UHFFFAOYSA-N 0.000 description 1
- HIACAHMKXQESOV-UHFFFAOYSA-N 1,2-bis(prop-1-en-2-yl)benzene Chemical compound CC(=C)C1=CC=CC=C1C(C)=C HIACAHMKXQESOV-UHFFFAOYSA-N 0.000 description 1
- UICXTANXZJJIBC-UHFFFAOYSA-N 1-(1-hydroperoxycyclohexyl)peroxycyclohexan-1-ol Chemical compound C1CCCCC1(O)OOC1(OO)CCCCC1 UICXTANXZJJIBC-UHFFFAOYSA-N 0.000 description 1
- JZHGRUMIRATHIU-UHFFFAOYSA-N 1-ethenyl-3-methylbenzene Chemical compound CC1=CC=CC(C=C)=C1 JZHGRUMIRATHIU-UHFFFAOYSA-N 0.000 description 1
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- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- SJIXRGNQPBQWMK-UHFFFAOYSA-N 2-(diethylamino)ethyl 2-methylprop-2-enoate Chemical group CCN(CC)CCOC(=O)C(C)=C SJIXRGNQPBQWMK-UHFFFAOYSA-N 0.000 description 1
- QHVBLSNVXDSMEB-UHFFFAOYSA-N 2-(diethylamino)ethyl prop-2-enoate Chemical group CCN(CC)CCOC(=O)C=C QHVBLSNVXDSMEB-UHFFFAOYSA-N 0.000 description 1
- RFCQDOVPMUSZMN-UHFFFAOYSA-N 2-Naphthalenethiol Chemical compound C1=CC=CC2=CC(S)=CC=C21 RFCQDOVPMUSZMN-UHFFFAOYSA-N 0.000 description 1
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- SFPNZPQIIAJXGL-UHFFFAOYSA-N 2-ethoxyethyl 2-methylprop-2-enoate Chemical compound CCOCCOC(=O)C(C)=C SFPNZPQIIAJXGL-UHFFFAOYSA-N 0.000 description 1
- WDQMWEYDKDCEHT-UHFFFAOYSA-N 2-ethylhexyl 2-methylprop-2-enoate Chemical compound CCCCC(CC)COC(=O)C(C)=C WDQMWEYDKDCEHT-UHFFFAOYSA-N 0.000 description 1
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- HFCUBKYHMMPGBY-UHFFFAOYSA-N 2-methoxyethyl prop-2-enoate Chemical compound COCCOC(=O)C=C HFCUBKYHMMPGBY-UHFFFAOYSA-N 0.000 description 1
- BIISIZOQPWZPPS-UHFFFAOYSA-N 2-tert-butylperoxypropan-2-ylbenzene Chemical compound CC(C)(C)OOC(C)(C)C1=CC=CC=C1 BIISIZOQPWZPPS-UHFFFAOYSA-N 0.000 description 1
- FRIBMENBGGCKPD-UHFFFAOYSA-N 3-(2,3-dimethoxyphenyl)prop-2-enal Chemical compound COC1=CC=CC(C=CC=O)=C1OC FRIBMENBGGCKPD-UHFFFAOYSA-N 0.000 description 1
- FWEOQOXTVHGIFQ-UHFFFAOYSA-N 8-anilinonaphthalene-1-sulfonic acid Chemical compound C=12C(S(=O)(=O)O)=CC=CC2=CC=CC=1NC1=CC=CC=C1 FWEOQOXTVHGIFQ-UHFFFAOYSA-N 0.000 description 1
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- ROFVEXUMMXZLPA-UHFFFAOYSA-N Bipyridyl Chemical group N1=CC=CC=C1C1=CC=CC=N1 ROFVEXUMMXZLPA-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
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- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 description 1
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- LCXXNKZQVOXMEH-UHFFFAOYSA-N Tetrahydrofurfuryl methacrylate Chemical group CC(=C)C(=O)OCC1CCCO1 LCXXNKZQVOXMEH-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- MZVQCMJNVPIDEA-UHFFFAOYSA-N [CH2]CN(CC)CC Chemical group [CH2]CN(CC)CC MZVQCMJNVPIDEA-UHFFFAOYSA-N 0.000 description 1
- BZEZSORUWZUMNU-UHFFFAOYSA-N [Li]CCCC[Li] Chemical compound [Li]CCCC[Li] BZEZSORUWZUMNU-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000004520 agglutination Effects 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- FTWHFXMUJQRNBK-UHFFFAOYSA-N alpha-Methylen-gamma-aminobuttersaeure Chemical group NCCC(=C)C(O)=O FTWHFXMUJQRNBK-UHFFFAOYSA-N 0.000 description 1
- 229920005603 alternating copolymer Polymers 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000004104 aryloxy group Chemical group 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 229920005601 base polymer Polymers 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- AOJOEFVRHOZDFN-UHFFFAOYSA-N benzyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC1=CC=CC=C1 AOJOEFVRHOZDFN-UHFFFAOYSA-N 0.000 description 1
- GCTPMLUUWLLESL-UHFFFAOYSA-N benzyl prop-2-enoate Chemical compound C=CC(=O)OCC1=CC=CC=C1 GCTPMLUUWLLESL-UHFFFAOYSA-N 0.000 description 1
- YRIMUVMZMVUPKD-UHFFFAOYSA-L bis(2,6-ditert-butylphenoxy)-(2-methylpropyl)alumane Chemical compound CC(C)(C)C=1C=CC=C(C(C)(C)C)C=1O[Al](CC(C)C)OC1=C(C(C)(C)C)C=CC=C1C(C)(C)C YRIMUVMZMVUPKD-UHFFFAOYSA-L 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000011903 deuterated solvents Substances 0.000 description 1
- 229920000359 diblock copolymer Polymers 0.000 description 1
- SMBQBQBNOXIFSF-UHFFFAOYSA-N dilithium Chemical compound [Li][Li] SMBQBQBNOXIFSF-UHFFFAOYSA-N 0.000 description 1
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000010556 emulsion polymerization method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- ZJOLCKGSXLIVAA-UHFFFAOYSA-N ethene;octadecanamide Chemical compound C=C.CCCCCCCCCCCCCCCCCC(N)=O.CCCCCCCCCCCCCCCCCC(N)=O ZJOLCKGSXLIVAA-UHFFFAOYSA-N 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 125000005448 ethoxyethyl group Chemical group [H]C([H])([H])C([H])([H])OC([H])([H])C([H])([H])* 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 1
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical group CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- AFRJJFRNGGLMDW-UHFFFAOYSA-N lithium amide Chemical compound [Li+].[NH2-] AFRJJFRNGGLMDW-UHFFFAOYSA-N 0.000 description 1
- 150000002642 lithium compounds Chemical class 0.000 description 1
- JILPJDVXYVTZDQ-UHFFFAOYSA-N lithium methoxide Chemical compound [Li+].[O-]C JILPJDVXYVTZDQ-UHFFFAOYSA-N 0.000 description 1
- YNXURHRFIMQACJ-UHFFFAOYSA-N lithium;methanidylbenzene Chemical compound [Li+].[CH2-]C1=CC=CC=C1 YNXURHRFIMQACJ-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- NXMXPVQZFYYPGD-UHFFFAOYSA-N methyl 2-methylprop-2-enoate;methyl prop-2-enoate Chemical compound COC(=O)C=C.COC(=O)C(C)=C NXMXPVQZFYYPGD-UHFFFAOYSA-N 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- DWFKOMDBEKIATP-UHFFFAOYSA-N n'-[2-[2-(dimethylamino)ethyl-methylamino]ethyl]-n,n,n'-trimethylethane-1,2-diamine Chemical compound CN(C)CCN(C)CCN(C)CCN(C)C DWFKOMDBEKIATP-UHFFFAOYSA-N 0.000 description 1
- KZCOBXFFBQJQHH-UHFFFAOYSA-N octane-1-thiol Chemical compound CCCCCCCCS KZCOBXFFBQJQHH-UHFFFAOYSA-N 0.000 description 1
- 150000002900 organolithium compounds Chemical class 0.000 description 1
- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical group C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- QIWKUEJZZCOPFV-UHFFFAOYSA-N phenyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC1=CC=CC=C1 QIWKUEJZZCOPFV-UHFFFAOYSA-N 0.000 description 1
- NHKJPPKXDNZFBJ-UHFFFAOYSA-N phenyllithium Chemical compound [Li]C1=CC=CC=C1 NHKJPPKXDNZFBJ-UHFFFAOYSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002265 prevention Effects 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
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 125000004079 stearyl 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])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
- 239000010959 steel Substances 0.000 description 1
- MUTNCGKQJGXKEM-UHFFFAOYSA-N tamibarotene Chemical group C=1C=C2C(C)(C)CCC(C)(C)C2=CC=1NC(=O)C1=CC=C(C(O)=O)C=C1 MUTNCGKQJGXKEM-UHFFFAOYSA-N 0.000 description 1
- WMXCDAVJEZZYLT-UHFFFAOYSA-N tert-butylthiol Chemical compound CC(C)(C)S WMXCDAVJEZZYLT-UHFFFAOYSA-N 0.000 description 1
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 description 1
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
- C08J3/124—Treatment for improving the free-flowing characteristics
-
- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
-
- 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
- C08F293/00—Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule
-
- 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
- C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
- C08F297/02—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type
- C08F297/026—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the anionic type polymerising acrylic acid, methacrylic acid or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/10—Homopolymers or copolymers of methacrylic acid esters
- C08L33/12—Homopolymers or copolymers of methyl methacrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
-
- 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
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2353/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2355/00—Characterised by the use of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08J2323/00 - C08J2353/00
Definitions
- the present invention relates to a method for producing an acrylic block copolymer pellet which is prevented from sticking.
- An acrylic block copolymer having a polymer block composed of an acrylate unit and a polymer block composed of a methacrylic ester unit is used for various applications such as an adhesive, a soft material, and a resin modifier due to its characteristics. The use of is being considered.
- This acrylic block copolymer is usually produced as granular pellets for use in various molding methods such as injection molding and extrusion molding.
- an acrylic block copolymer usually contains a soft component and is problematic in that it easily sticks.
- an anti-sticking agent such as ethylenebisstearic acid amide
- ethylene bis stearic acid amide is used as an anti-sticking agent, there are problems such as a decrease in transparency of the resulting molded product and occurrence of scum.
- the object of the present invention is to sufficiently prevent the occurrence of sticking without impairing the excellent performance of the acrylic block copolymer such as transparency, and to suppress the foaming and to suppress the foaming. It is to provide polymer pellets.
- the inventors of the present invention have obtained a transparent acrylic block copolymer pellet obtained through a step of contacting a specific aqueous dispersion containing acrylic resin particles. It has been found that it is possible to sufficiently prevent sticking without impairing the excellent performance of the acrylic block copolymer such as property, and to improve production efficiency by suppressing foaming.
- the object is [1] Raw material of acrylic block copolymer (A) having at least one polymer block (a1) comprising an alkyl acrylate unit and at least one polymer block (a2) comprising an alkyl methacrylate unit
- Acrylic block copolymer (A) comprising a step of contacting the pellet with an aqueous dispersion (C) containing acrylic resin particles (B) and no surfactant, and a step of removing water adhering to the pellet
- a process for producing a pellet (D) comprising: [2] An aqueous dispersion (C-1) in which the aqueous dispersion (C) contains wet-pulverized acrylic resin particles (B) and an aqueous dispersion (C-1) containing dry-pulverized acrylic resin particles (B) -2)
- the temperature of the aqueous dispersion (C) in the step of contacting the raw material pellet of the acrylic block copolymer (A) is 10 to 80, and a method for producing the pellet (D) containing the block copolymer (A); A method for producing a pellet (D) containing the acrylic block copolymer (A) according to any one of [1] to [6], which is at ° C; [8] A structure in which the acrylic block copolymer (A) has a polymer block (a2) composed of methacrylic acid alkyl ester units bonded to both ends of the polymer block (a1) composed of acrylic acid alkyl ester units.
- Any one of [1] to [7], having at least one in the molecule, a weight average molecular weight of 30,000 to 250,000, and a content of the polymer block (a2) of 5 to 40% by mass A method for producing a pellet (D) containing the acrylic block copolymer (A) according to claim 1, and an acrylic block copolymer produced by any one of the production methods [9] [1] to [8] Pellet (D) containing coalescence (A); Is achieved by providing
- an acrylic block copolymer that can sufficiently prevent sticking without impairing the excellent performance of the acrylic block copolymer such as transparency, and that is excellent in production efficiency by suppressing foaming.
- Polymer pellets are obtained.
- (meth) acrylic acid ester is a general term for “methacrylic acid ester” and “acrylic acid ester”, and “(meth) acrylic” means “methacrylic” and “acrylic”. It is a generic name.
- the acrylic block copolymer (A) contained in the raw material pellets used in the present invention is composed of at least one polymer block (a1) comprising an alkyl acrylate ester unit and at least one polymer block comprising an alkyl methacrylate ester unit. (A2).
- alkyl acrylate ester which is a constituent unit of the polymer block (a1) include, for example, methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, t-butyl acrylate, n-hexyl acrylate, Examples include cyclohexyl acrylate, 2-ethylhexyl acrylate, n-octyl acrylate, lauryl acrylate, tridecyl acrylate, stearyl acrylate, and the like.
- alkyl group of the alkyl acrylate ester is a short chain alkyl group having a main chain carbon number of 4 or less (for example, methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, t-butyl acrylate) Etc.) tend to improve the fluidity and tensile strength of the acrylic block copolymer (A).
- alkyl group contained in the alkyl acrylate ester is a long chain alkyl group having 6 or more main chain carbon atoms (for example, n-hexyl acrylate, cyclohexyl acrylate, 2-ethylhexyl acrylate, n-octyl acrylate)
- Lauryl acrylate, tridecyl acrylate, stearyl acrylate, etc. tend to improve the low-temperature characteristics of the acrylic block copolymer (A).
- the acrylic acid alkyl ester unit which is a constituent unit of the polymer block (a1), may be composed of one kind alone, or may be composed of two or more kinds.
- the proportion of the acrylic acid alkyl ester unit contained in the polymer block (a1) is preferably 60% by mass or more, more preferably 80% by mass or more, and further preferably 90% by mass or more in the polymer block (a1).
- the polymer block (a1) may be 100% by mass of an acrylic acid alkyl ester unit.
- the polymer block (a1) may contain other monomer units as long as the effects of the present invention are not impaired.
- Examples of other monomers constituting such a unit include, but are not limited to, methacrylic acid alkyl esters and methacrylic acid alkyl esters described later, methacrylic acid esters having no functional groups, methacrylic acid esters having functional groups, and alkyl acrylate esters.
- these monomers are usually used in a small amount, but are preferably 40% by mass or less, more preferably 20% by mass with respect to the total mass of the monomers used for forming the polymer block (a1). % Or less, more preferably 10% by mass or less.
- the glass transition temperature of the polymer block (a1) is preferably ⁇ 100 to 40 ° C., more preferably ⁇ 80 to 35 ° C., and further preferably ⁇ 70 to 30 ° C.
- a pellet containing the acrylic block copolymer (A) having excellent flexibility and adhesive properties even in a low temperature region can be obtained.
- alkyl acrylates methyl acrylate, propyl acrylate, n-butyl acrylate, acrylic acid 2 are preferable because the glass transition temperature of the polymer block (a1) falls within the above range and is easily available. -Ethylhexyl and n-octyl acrylate are preferred.
- the acrylic block copolymer (A) may contain two or more polymer blocks (a1).
- the polymer blocks (a1) may be the same or different. Also good.
- Examples of the methacrylic acid alkyl ester that is a constituent unit of the polymer block (a2) include, for example, methyl methacrylate, ethyl methacrylate, propyl methacrylate, n-butyl methacrylate, t-butyl methacrylate, and n-hexyl methacrylate. Cyclohexyl methacrylate, 2-ethylhexyl methacrylate, n-octyl methacrylate, lauryl methacrylate, tridecyl methacrylate, stearyl methacrylate, isobornyl methacrylate, and the like.
- methyl methacrylate, ethyl methacrylate, and propyl methacrylate are preferable, and methyl methacrylate is preferable because it is economically available and the resulting polymer block (a2) has excellent durability and weather resistance. More preferred.
- the methacrylic acid alkyl ester unit which is a constituent unit of the polymer block (a2), may be constituted by one kind alone or may be constituted by two or more kinds.
- the proportion of the alkyl methacrylate unit contained in the polymer block (a2) is preferably 60% by mass or more, more preferably 80% by mass or more, and still more preferably 90% by mass or more in the polymer block (a2).
- the polymer block (a2) may be 100% by mass of methacrylic acid alkyl ester units.
- the polymer block (a2) may contain other monomer units as long as the effects of the present invention are not impaired.
- examples of such other monomers include methacrylic acid esters having no functional groups other than methacrylic acid alkyl esters such as phenyl methacrylate and benzyl methacrylate; alkoxy methacrylates such as methoxyethyl methacrylate and ethoxyethyl methacrylate.
- Methacrylic acid esters having functional groups such as alkyl esters, diethylaminoethyl methacrylate, 2-hydroxyethyl methacrylate, 2-aminoethyl methacrylate, glycidyl methacrylate, and tetrahydrofurfuryl methacrylate; alkyl acrylates described above; acrylic Acrylic acid ester having no functional group other than acrylic acid alkyl ester such as phenyl acid benzyl acrylate; acrylic acid alkoxy such as methoxyethyl acrylate and ethoxyethyl acrylate Acrylic esters having functional groups such as alkyl esters, diethylaminoethyl acrylate, 2-hydroxyethyl acrylate, 2-aminoethyl acrylate, glycidyl acrylate, tetrahydrofurfuryl acrylate, etc .; (meth) acrylic acid, crotonic acid , Vinyl monomers having a carb
- Olefin monomer ⁇ -caprolactone, Lactone-based monomers such as Rorakuton like.
- these monomers are usually used in a small amount, but are preferably 40% by mass or less, more preferably 20% by mass with respect to the total mass of the monomers used for forming the polymer block (a2). % Or less, more preferably 10% by mass or less.
- the glass transition temperature of the polymer block (a2) is preferably 50 to 150 ° C., more preferably 70 to 140 ° C., and further preferably 80 to 130 ° C.
- the glass transition temperature of the polymer block (a2) is within the above range, it is easy to process into pellets, and when stored as pellets, the stickiness at high temperatures (for example, 50 ° C.) tends to be reduced. .
- the acrylic block copolymer (A) may contain two or more polymer blocks (a2). In that case, these polymer blocks (a2) may be the same or different. Also good.
- the weight average molecular weight of the polymer block (a2) is not particularly limited, but is preferably in the range of 1,000 to 50,000, and more preferably in the range of 4,000 to 20,000. When the weight average molecular weight of the polymer block (a2) is smaller than 1,000, the cohesive force of the resulting acrylic block copolymer (A) may be insufficient. Moreover, when the weight average molecular weight of a polymer block (a2) is larger than 50,000, the melt viscosity of the acrylic block copolymer (A) obtained becomes high, and acrylic block copolymer (A) of In some cases, the productivity and the moldability of the pellet containing the acrylic block copolymer (A) to be obtained may be inferior.
- a weight average molecular weight (Mw) means the weight average molecular weight of standard polystyrene conversion measured by the gel permeation chromatography (GPC) method.
- the difference in glass transition temperature between the polymer block (a2) and the polymer block (a1) in the acrylic block copolymer (A) is preferably 70 ° C. or higher, more preferably 100 ° C. or higher.
- the acrylic block copolymer (A) may have only the polymer block (a1) and the polymer block (a2) as the polymer block, and the polymer block (a1) and the polymer block (a2). You may have polymer blocks other than.
- the acrylic block copolymer (A) has a plurality of polymer blocks (a1) or polymer blocks (a2), the composition, molecular weight and stereoregularity of these polymer blocks are the same or different. It may be.
- the acrylic block copolymer preferably has at least one structure in the molecule in which the polymer block (a2) is bonded to both ends of the polymer block (a1).
- the acrylic block copolymer (A) has a general formula: when the polymer block (a2) is “a2”; and the polymer block (a1) is “a1”; (A2-a1) n (A2-a1) n-a2 a1- (a2-a1) n (A2-a1) nZ (A1-a2) nZ (Wherein n represents an integer of 1 to 30 and Z represents a coupling site (a coupling site after a coupling agent reacts with a polymer terminal to form a chemical bond)). Is preferred.
- the value of n is preferably 1 to 15, more preferably 1 to 8, and further preferably 1 to 4.
- n 1 (A2-a1) n 1 (A2-a1) n-a2 a1- (a2-a1) n 1 (A2-a1) n 1 -Z (A1-a2) n 1 -Z
- n represents an integer of 1 to 30
- n 1 represents an integer of 2 to 30
- Z represents a coupling site (a coupling site after a coupling agent reacts with a polymer terminal to form a chemical bond).
- n 1 is preferably 2 to 15, more preferably 2 to 8, and still more preferably 2 to 4.
- linear block copolymers represented by (a2-a1) n, (a2-a1) n-a2, and a1- (a2-a1) n are more preferable, and represented by a2-a1. More preferred are diblock copolymers and triblock copolymers represented by a2-a1-a2.
- the content of the polymer block (a2) in the acrylic block copolymer (A) is preferably 5 to 40% by mass.
- the acrylic block copolymer (A) is highly fluid and liquid, or the pellets are produced from the acrylic block copolymer (A). In doing so, for example, the pellet shape may not be maintained even if it is cut with an underwater cutter or the like.
- the content of the polymer block (a2) exceeds 40% by mass, pellets containing the acrylic block copolymer (A) having excellent flexibility tend not to be obtained.
- the content of the polymer block (a2) in the acrylic block copolymer (A) is preferably 8 to 35% by mass, and preferably 15 to 31% by mass from the viewpoint of obtaining pellets excellent in flexibility. It is more preferable.
- the weight average molecular weight of the polymer (A) is preferably 30,000 to 250,000, more preferably 40,000 to 200,000, and further preferably 50,000 to 180,000. Preferably, it is more preferably 60,000 to 160,000.
- the weight average molecular weight of the acrylic block copolymer (A) is less than 30,000, the cohesive force of the acrylic block copolymer (A) becomes insufficient, and the resulting molded product or adhesive product has durability. May be inferior.
- the acrylic block copolymer (A) bleeds on the surface of the molded product or the pressure-sensitive adhesive product.
- the weight average molecular weight of the acrylic block copolymer (A) exceeds 250,000, the melt viscosity becomes too high and the productivity and workability may be poor.
- the compatibility with the acrylic resin particles (B) described later is lowered, the transparency of the resulting molded product or adhesive product is insufficient, or the physical properties of the obtained molded product or adhesive product are uneven. There is a case.
- the molecular weight distribution (Mw / Mn) is preferably 1.0 to 1.5.
- the molecular weight distribution of the acrylic block copolymer (A) is in the above range, it suppresses mold contamination during molding or has high cohesion when used as an adhesive, and at the same time adherend Contamination can be suppressed.
- the molecular weight distribution is more preferably 1.0 to 1.4, and further preferably 1.0 to 1.3.
- the number average molecular weight (Mn) and the weight average molecular weight (Mw) mean a number average molecular weight and a weight average molecular weight in terms of standard polystyrene measured by a gel permeation chromatography (GPC) method.
- the production method of the acrylic block copolymer (A) is not particularly limited, and can be produced by a production method according to a known method.
- a method for obtaining a block copolymer having a narrow molecular weight distribution a method of living polymerizing monomers as constituent units is employed.
- living polymerization methods include a method of living polymerization using an organic rare earth metal complex as a polymerization initiator (see, for example, JP-A-11-335432), and an alkali metal using an organic alkali metal compound as a polymerization initiator.
- a living anion polymerization in the presence of a mineral acid salt such as an alkaline earth metal salt see, for example, Japanese Patent Publication No.
- a living in the presence of an organoaluminum compound using an organic alkali metal compound as a polymerization initiator examples include anionic polymerization methods (for example, see JP-A-6-93060) and atom transfer radical polymerization methods (ATRP) (for example, see Macromol. Chem. Phys., 2000, 201, p1108 to 1114).
- the method of living anion polymerization in the presence of an organoaluminum compound has little deactivation during polymerization, so that there is little mixing of homopolymer, and the resulting block copolymer has high transparency.
- the polymerization conversion rate of the monomer is high, the residual monomer in the block copolymer is small, and the generation of bubbles can be suppressed when producing a pellet made of the acrylic block copolymer (A).
- the molecular structure of the polymer block composed of the methacrylic acid alkyl ester unit becomes highly syndiotactic, and there is an effect of improving the durability of the pellet containing the resulting acrylic block copolymer (A).
- the acrylic block copolymer (A) is preferably produced by a method of living anion polymerization using an organic alkali metal compound as a polymerization initiator in the presence of an organoaluminum compound.
- Examples of the living anion polymerization method in the presence of the organoaluminum compound include an organolithium compound and the following general formula (1).
- AlR 1 R 2 R 3 (1) (In the formula (1), R 1 , R 2 and R 3 each independently have an alkyl group which may have a substituent, a cycloalkyl group which may have a substituent, and a substituent.
- R 1 is any of the groups described above, and R 2 and R 3 together form an aryleneoxy group which may have a substituent.
- an ether compound such as dimethyl ether, dimethoxyethane, diethoxyethane, 12-crown-4; triethylamine, N, N, N ′, N′-tetramethyl Ethylenediamine, N, N, N ′, Further adding a nitrogen-containing compound such as N ", N" -pentamethyldiethylenetriamine, 1,1,4,7,10,10-hexamethyltriethylenetetramine, pyridine, 2,2'-dipyridyl, (meth)
- a method of polymerizing acrylic acid ester can be employed.
- organic lithium compound examples include alkyllithium or alkyldilithium such as n-butyllithium, sec-butyllithium, and tetramethylenedilithium; aryllithium or aryldilithium such as phenyllithium and xylyllithium; benzyllithium, Examples thereof include aralkyl lithium such as dilithium or aralkyl dilithium produced by the reaction of diisopropenylbenzene and butyllithium; lithium amide such as lithium diisopropylamide; lithium alkoxide such as methoxylithium.
- alkyllithium or alkyldilithium such as n-butyllithium, sec-butyllithium, and tetramethylenedilithium
- aryllithium or aryldilithium such as phenyllithium and xylyllithium
- benzyllithium examples thereof include aralkyl lithium such as dilithium
- the organoaluminum compound represented by the general formula (1) includes isobutylbis (2,6-di-tert-butyl-4-methyl) from the viewpoint of high living property of polymerization and easy handling.
- Phenoxy) aluminum, isobutylbis (2,6-di-tert-butylphenoxy) aluminum, isobutyl [2,2′-methylenebis (4-methyl-6-tert-butylphenoxy)] aluminum and the like are preferable.
- the acrylic block copolymer (A) is used as a raw material pellet.
- the raw material pellet made of the acrylic block copolymer (A) is prepared by, for example, melt-extruding the acrylic block copolymer (A) into a strand, and cutting it with an underwater cutter, a center hot cutter, a strand cutter, or the like. It can be manufactured by making a pellet.
- the raw material pellets include acrylic resin particles (B) to be described later, and there is no particular limitation on the form thereof as long as the raw material pellets can be contacted with an aqueous dispersion (C) that does not contain a surfactant.
- the maximum diameter of the raw material pellet of the acrylic block copolymer (A) having a substantially cylindrical shape or a substantially spherical (ellipsoidal) form is preferably 2 to 8 mm, and more preferably 2 to 6 mm. preferable.
- the maximum diameter of the raw material pellets can be determined by measuring with a commercially available length gauge, depending on the shape, the maximum column height in the case of a substantially cylinder and the longest side of an ellipsoid in the case of a substantially spherical shape.
- the content of the acrylic block copolymer (A) contained in the raw material pellet is preferably 80% by mass or more, more preferably 90% by mass or more, and 100% by mass in the raw material pellet. It is particularly preferred.
- additives such as a tackifier resin, a plasticizer, a softener, and the like, which will be described later, may also be blended to produce raw material pellets from these mixtures.
- the aqueous dispersion (C) used in the present invention contains acrylic resin particles (B) and does not contain a surfactant.
- the acrylic resin to be the acrylic resin particles (B) is a polymer mainly containing (meth) acrylic acid ester units, and preferably contains 85% by mass or more, and contains 88% by mass or more of methyl methacrylate units. Is more preferable, and 90% by mass or more is more preferable, and the methyl methacrylate unit may be 100% by mass.
- the acrylic resin may contain other monomer units other than methyl methacrylate.
- Other monomers that can constitute such other monomer units include ethyl methacrylate, propyl methacrylate, n-butyl methacrylate, t-butyl methacrylate, n-hexyl methacrylate, cyclohexyl methacrylate, methacrylic acid.
- methacrylic acid alkyl esters (excluding methyl methacrylate), acrylic acid alkyl esters, and methacrylic acid are preferable.
- the content of other monomer units is preferably 15% by mass or less, more preferably 12% by mass or less, and further preferably 10% by mass or less.
- the content of other monomer units may be 0% by mass.
- the acrylic resin is a methyl methacrylate copolymer
- the form of the copolymer is not particularly limited, and examples thereof include a random copolymer, a block copolymer, a graft copolymer, and an alternating copolymer. Can be mentioned. Among these, a methyl methacrylate random copolymer is preferable and a methyl methacrylate-methyl acrylate random copolymer is more preferable from the viewpoint of more excellent anti-sticking property and availability.
- the acrylic resin preferably has a weight average molecular weight of 50,000 to 100,000.
- the weight average molecular weight is in the above range, the compatibility with the acrylic block copolymer (A) is good, and the transparency is high when a molded product or a solvent-type adhesive is used.
- the weight average molecular weight is more preferably 60,000 to 95,000, and 70,000 to 90. More preferably, it is 1,000.
- the method for producing the acrylic resin is not particularly limited, and examples thereof include a solution polymerization method, an emulsion polymerization method, and a bulk polymerization method.
- the acrylic resin may be a mixture of two or more different compositions of polymers and polymers obtained by different production methods.
- the initiator used in the polymerization a radical polymerization initiator is preferable.
- radical polymerization initiator examples include azo compounds such as azobisisobutyronitrile (AIBN) and azobis ⁇ -dimethylvaleronitrile; benzoyl peroxide, cumi Luperoxide, peroxyneodecanoate, diisopropylperoxydicarbonate, t-butylcumyl peroxide, cumene hydroperoxide, t-butylhydroperoxide, cyclohexanone peroxide, methyl ethyl ketone peroxide, dicumyl peroxide, lauroyl peroxide
- peroxides such as oxides.
- the radical polymerization initiator is usually used in an amount of 0.05 to 0.5 parts by mass with respect to 100 parts by mass of all monomers used for the production of the acrylic resin.
- the polymerization is usually carried out at a temperature of 50 to 140 ° C., usually for 2 to 20 hours, and a chain transfer agent can be used to control the molecular weight of the acrylic resin.
- chain transfer agents examples include methyl mercaptan, ethyl mercaptan, isopropyl mercaptan, n-butyl mercaptan, t-butyl mercaptan, n-hexyl mercaptan, n-octyl mercaptan, n-dodecyl mercaptan, ethylthioglycoate, mercaptoethanol, thio- ⁇ -naphthol, thiophenol and the like can be mentioned.
- the chain transfer agent is usually used in the range of 0.005 to 0.5% by mass with respect to all monomers used for the production of the acrylic resin.
- the acrylic resin particles (B) are preferably produced by pulverization after obtaining the acrylic resin as described above.
- the pulverization may be dry pulverization or wet pulverization.
- the aqueous dispersion (C-1) includes the aqueous dispersion (C-1) containing the acrylic resin particles (B) pulverized wet, and the aqueous dispersion (C-2) containing the acrylic resin particles (B) pulverized dry.
- a preferred embodiment is at least one selected from the group consisting of: Among them, the aqueous dispersion (C-1) containing the acrylic resin particles (B) that has been wet pulverized has sufficient tendency to prevent the sticking of the pellets and to suppress foaming, and to have better dispersibility in water. .
- Dry pulverization is a suitable method for producing moderately large resin particles (for example, 1 to 100 ⁇ m) from the produced resin mass.
- wet pulverization is a suitable method for producing smaller resin particles (for example, 1 ⁇ m to 50 ⁇ m).
- the pulverization may be performed by combining dry pulverization and wet pulverization. Moreover, you may classify
- the D50 value of the particle size distribution of the acrylic resin particles (B) is preferably 1 to 50 ⁇ m, more preferably 1 to 25 ⁇ m, and even more preferably 1 to 15 ⁇ m.
- the adhesion of the acrylic resin particles (B) to the raw material pellets of the acrylic block copolymer (A) becomes good, and the anti-sticking property tends to be excellent. Further, the stability of the aqueous dispersion (C) is improved. If it is less than 1 ⁇ m, the adhesion is considered to be improved, but it is considered that it is difficult to produce by wet pulverization and dry pulverization from the viewpoint of productivity.
- the D50 value of the particle size distribution of the acrylic resin particles (B) contained in the aqueous dispersion (C) is a cumulative particle with respect to the total particle volume of the particle size distribution obtained using a laser diffraction particle size distribution measuring device.
- the particle diameter when the volume is 50%.
- the D10 value of the particle size distribution of the acrylic resin particles (B) is preferably 1 to 70 ⁇ m, more preferably 1 to 50 ⁇ m, still more preferably 1 to 30 ⁇ m, and more preferably 1 to 15 ⁇ m. More preferably, it may be 1 to 10 ⁇ m.
- the adhesion of the acrylic resin particles (B) to the raw material pellets of the acrylic block copolymer (A) becomes good and the anti-sticking property tends to be excellent. Further, the stability of the aqueous dispersion (C) is improved.
- the D10 value of the particle size distribution of the acrylic resin particles (B) contained in the aqueous dispersion (C) is a cumulative particle with respect to the total particle volume of the particle size distribution obtained using a laser diffraction particle size distribution measuring device.
- the particle diameter when the volume is 10%.
- the D90 value of the particle size distribution of the acrylic resin particles (B) is preferably 1 to 100 ⁇ m, more preferably 1 to 70 ⁇ m, further preferably 1 to 50 ⁇ m, and 1 to 35 ⁇ m. More preferably, it may be 1 to 20 ⁇ m.
- the adhesion of the acrylic resin particles (B) to the raw material pellets of the acrylic block copolymer (A) becomes good and the anti-sticking property tends to be excellent. Further, the stability of the aqueous dispersion (C) is improved.
- the D90 value of the particle size distribution of the acrylic resin particles (B) contained in the aqueous dispersion (C) is a cumulative particle with respect to the total particle volume of the particle size distribution obtained using a laser diffraction particle size distribution measuring device.
- the particle diameter when the volume is 90%.
- the solid content concentration of the acrylic resin particles (B) in the aqueous dispersion (C) can be appropriately set in consideration of handleability, stability, etc., but is preferably 0.05 to 2.0% by mass.
- the content is more preferably 0.1 to 1.0% by mass, and further preferably 0.3 to 0.8% by mass.
- the aqueous dispersion (C) does not contain a surfactant.
- the stability of the acrylic resin particles (B) in the aqueous dispersion (C) is improved.
- the adhesion of the acrylic resin particles (B) to the raw material pellets of the acrylic block copolymer (A) tends to be inferior.
- foaming occurs in the process and production efficiency tends to be inferior.
- the acrylic block copolymer (A) may have an adverse effect on the inherent properties (for example, transparency). Therefore, it is important that the aqueous dispersion (C) does not contain a surfactant.
- the aqueous dispersion (C) has a water-soluble composition comprising a protective colloid component such as a water-soluble cellulose derivative and a water-soluble polymer from the viewpoint of making it difficult to adversely affect the properties inherent to the acrylic block copolymer (A). Desirably, no sexual thickener is included.
- an aqueous dispersion (C) it can manufacture as follows. As a specific production method, acrylic resin is pulverized into a predetermined particle size distribution by a bead mill wet pulverization method using water as a solvent, then recovered with an aqueous dispersion, and the obtained aqueous dispersion is further diluted. With this, an aqueous dispersion (C-1) can be produced. In addition, if the solid content concentration of the aqueous dispersion is too high during the operation of wet pulverization, the viscosity becomes high and hinders the operation. Therefore, the solid content concentration is suitably 30% by mass or less.
- an acrylic resin used for wet pulverization in advance by primary pulverization by a dry pulverization method such as an ACM pulverizer or a counter jet mill.
- the acrylic resin used for dry pulverization has a bead shape of about 300 ⁇ m. It is more preferable.
- the pulverized acrylic resin particles (B) are dispersed in water to obtain an aqueous dispersion (C-2). Can be manufactured.
- the raw material pellet of the acrylic block copolymer (A) contains the acrylic resin particles (B), and the surfactant.
- the method for bringing the aqueous dispersion (C) into contact with the raw material pellets of the acrylic block copolymer (A) is not particularly limited.
- Examples of the method for spraying the aqueous dispersion (C) include a method in which raw material pellets are arranged on a transfer device such as a conveyor and the aqueous dispersion (C) is continuously sprayed when passing through the sprayer. It is done.
- the aqueous dispersion (C) As a method of charging the raw material pellets of the acrylic block copolymer (A) into the aqueous dispersion (C), for example, the aqueous dispersion (C) and the raw material pellets are charged into a mixing tank equipped with a stirrer. There may be mentioned a method in which the pellets and the aqueous dispersion (C) are separated by a method such as filtration after mixing at a temperature of 0 ° C. to the boiling point of the solvent contained in the aqueous dispersion (C) for a predetermined time.
- the temperature of the aqueous dispersion (C) in the step of contacting the raw material pellets of the acrylic block copolymer (A) is preferably 10 to 80 ° C., and preferably 30 to 60 ° C. from the viewpoint of adhesion. More preferred.
- the method of introducing the raw material pellets of the acrylic block copolymer (A) into the aqueous dispersion (C) is preferable because the prevention of sticking of the pellets can be performed stably.
- the aqueous dispersion (C) adheres to the surface of the raw material pellets that have undergone the step of contacting with the aqueous dispersion (C).
- moisture content of the water dispersion liquid (C) adhering to the surface of this pellet is included after the said contact process.
- moisture in the aqueous dispersion (C) adhering to the pellet surface is removed by air blowing, air blowing using heated air as necessary, or the like. be able to.
- the pellet (D) containing the acrylic block copolymer (A), in which the acrylic resin particles (B) are attached to the surface of the raw material pellet of the acrylic block copolymer (A) by passing through such a process, can get.
- the pellet (D) containing the acrylic block copolymer (A) of the present invention for example, the remaining pellets derived from the sticking property of the raw material pellets are suppressed in the process equipment until the final product is packed.
- the step of bringing the acrylic resin particles (B) into contact with the pellets (D) may be included.
- the method for bringing the acrylic resin particles (B) into contact with the pellet (D) containing the acrylic block copolymer (A) is not particularly limited.
- a horizontal cylindrical mixer, a V mixer, a double cone mixer, a ribbon mixer, a conical screw mixer, a high-speed fluid mixer, a rotating disk mixer examples thereof include an airflow stirring type mixer, a gravity drop type mixing machine, and a stirring type mixing machine.
- pellets (D) and pellets (D ′) containing the acrylic block copolymer (A) thus obtained are used for various moldings usually used in thermoplastic resins such as injection molding, extrusion molding, and calendar molding. By the method, it can be formed into a desired shape. Further, it can be used as a component of elastomer materials, resins, rubber, asphalt modifiers, vibration damping agents, adhesive base polymers, and resin modifiers.
- Weight average molecular weight (Mw), number average molecular weight (Mn), and molecular weight distribution (Mw / Mn) The weight average molecular weight, number average molecular weight, and molecular weight distribution of the acrylic block copolymer were determined in terms of polystyrene by gel permeation chromatography (hereinafter abbreviated as GPC). Details are as follows. ⁇ Equipment: GPC equipment “HLC-8020” manufactured by Tosoh Corporation Separation column: “TSKgel GMHXL”, “G4000HXL” and “G5000HXL” manufactured by Tosoh Corporation are connected in series. Eluent: Tetrahydrofuran Eluent flow rate: 1.0 ml / min Column temperature: 40 ° C. ⁇ Detection method: Differential refractive index (RI)
- composition ratio of each polymer block The composition ratio of each polymer block in the acrylic block copolymer was determined by 1 H-NMR ( 1 H-nuclear magnetic resonance) measurement. Details are as follows. ⁇ Device: JEM Nuclear Magnetic Resonance Device “JNM-LA400” ⁇ Deuterated solvent: Deuterated chloroform
- Particle size distribution of acrylic resin particles in water dispersion (D10 value, D50 value, D90 value)”
- the particle size distribution (D10 value, D50 value, D90 value) of the acrylic resin particles in the aqueous dispersion was determined using a laser diffraction particle size distribution measuring apparatus. Details are as follows. ⁇ Device: Laser diffraction / scattering type particle size distribution measuring instrument “Microtrack MT3000II” manufactured by Microtrack Bell Co., Ltd. Measurement solvent: water In Comparative Examples 1 and 2, the average particle diameter published by the manufacturer was described. In Comparative Examples 3 to 4, the numerical values described in Example 1 (Alflow H50ES) and Example 4 (Alflow H50T) of JP-A-2016-188327 are described.
- Air blow is performed on the pellets remaining on the draining net using an air gun from above the draining net, and the moisture adhering to the pellet surface is blown off. 4).
- the pellets from which moisture was lost were received in the palm of the hand, and the pellets after being crushed for 5 seconds were evaluated as to whether the pellets were unwound or a lump.
- AA The pellet is completely unraveled
- transparency Add 0.1 phr mass ratio of acrylic resin particles or commercially available anti-sticking agent to the raw material pellets of acrylic block copolymer, and use twin screw extruder (“ZSK-25” manufactured by KRUPP WERNER & PFLIDEERER) After pelletization by the strand cut method, an injection molding machine (“SE18DU” manufactured by Sumitomo Heavy Industries, Ltd.) is used to produce a molded body of 50 mm ⁇ 50 mm and thickness 3 mm at the following cylinder temperature and mold temperature, and direct reading haze Using a meter (“NDH5000” manufactured by Nippon Denshoku Industries Co., Ltd.), haze and total light transmittance (TT) were measured in accordance with ISO 13468-1 and used as an index of transparency.
- Mold temperature 50 °C
- the reaction solution was initially colored yellow, but became colorless after stirring for 60 minutes at room temperature. (3) Subsequently, the internal temperature of the polymerization solution was cooled to ⁇ 30 ° C., and 13.53 kg of n-butyl acrylate was added dropwise over 2 hours. After completion of the addition, the mixture was stirred at ⁇ 30 ° C. for 5 minutes. (4) Furthermore, 1.49 kg of methyl methacrylate was added to this, and it stirred at room temperature overnight. (5) After 0.50 kg of methanol was added to terminate the polymerization reaction, the resulting reaction solution was poured into 495 kg of methanol to precipitate a liquid precipitate.
- 14.8 kg of an acrylic triblock copolymer (A1) having a number average molecular weight of 1.10 was obtained.
- the said manufacture example 1 was repeated 10 times, and about 150 kg of acrylic triblock copolymers (A1) were obtained.
- the obtained acrylic triblock copolymer (A1) was pelletized by a strand cut method using a twin screw extruder (“ZSK-25” manufactured by KRUPP WERNER & PFLIDELER).
- the reaction solution was initially colored yellow, but became colorless after stirring for 60 minutes at room temperature. (3) Subsequently, the internal temperature of the polymerization liquid was cooled to ⁇ 30 ° C., and 10.49 kg of n-butyl acrylate was added dropwise over 2 hours. After completion of the addition, the mixture was stirred at ⁇ 30 ° C. for 5 minutes. (4) Furthermore, 2.19 kg of methyl methacrylate was added to this, and it stirred at room temperature overnight. (5) After 0.67 kg of methanol was added to terminate the polymerization reaction, the resulting reaction solution was poured into 500 kg of methanol to precipitate a liquid precipitate.
- methyl methacrylate unit content content of polymer block (a2)
- a weight average molecular weight of 61,000 a molecular weight distribution of 1.09. 14.7 kg
- acrylic triblock copolymer (A2) was obtained.
- the production example 2 was repeated 10 times to obtain about 150 kg of an acrylic triblock copolymer (A2).
- the resulting acrylic triblock copolymer (A2) was pelletized by a strand cut method using a twin screw extruder (“ZSK-25” manufactured by KRUPP WERNER & PFLIDELER).
- the liquid precipitate is recovered and dried, so that the methyl methacrylate unit content (content of polymer block (a2)) is 22.5% by mass, the weight average molecular weight is 111,000, and the molecular weight distribution is 1.09. 450 g of an acrylic triblock copolymer (A3) was obtained.
- the obtained acrylic triblock copolymer (A3) was pelletized by a strand cut method using a small twin screw extruder (“KZW-15” manufactured by Technobel Co., Ltd.).
- the liquid precipitate is collected and dried, so that the methyl methacrylate unit content (content of polymer block (a2)) is 11.0% by mass, the weight average molecular weight is 200,000, and the molecular weight distribution is 1.11.
- 440 g of an acrylic triblock copolymer (A4) was obtained.
- the obtained acrylic triblock copolymer (A4) was pelletized by a strand cut method using a small twin screw extruder (“KZW-15” manufactured by Technobel Co., Ltd.).
- the liquid precipitate is collected and dried, so that the methyl methacrylate unit content (content of polymer block (a2)) is 50.0% by mass, the weight average molecular weight is 62,000, and the molecular weight distribution is 1.12. 450 g of an acrylic triblock copolymer (A5) was obtained.
- the above Production Example 5 was repeated 5 times to obtain about 2.3 kg of an acrylic triblock copolymer (A2).
- the obtained acrylic triblock copolymer (A5) was pelletized by a strand cut method using a twin screw extruder (“ZSK-25” manufactured by KRUPP WERNER & PFLIDELER).
- Example 1 Acrylic resin particles using an acrylic resin (methyl methacrylate unit content: 90 mass%, weight average molecular weight: 85,000) so that the D50 value of the particle size distribution after pulverization by the following dry pulverizer is 6 ⁇ m. (B1) was produced. The obtained acrylic resin particles (B1) were dispersed in water so that the solid concentration was 0.5% by mass to prepare an aqueous dispersion (C-2-1), and each physical property evaluation was performed. Dispersibility in water is “A”, which shows a slight tendency to settle because it was produced only by dry pulverization. In the evaluation of pellet stickiness 1, pellets of acrylic block copolymers (A1 to A4) On the other hand, “AA” was good.
- Example 2 Using acrylic resin (methyl methacrylate unit content: 90 mass%, weight average molecular weight: 85,000), acrylic resin particles so that the D50 value of the particle size distribution after pulverization by the following dry pulverizer is 27 ⁇ m. (B2) was produced. Thereafter, in the same manner as in Example 1, it was dispersed in water so that the solid content concentration was 0.5% by mass to prepare an aqueous dispersion (C-2-2), and each physical property evaluation was performed. The dispersibility in water was “A” because the particle size distribution (D10 value, D50 value, D90 value) tended to precipitate due to a slightly large particle size distribution.
- Example 3 Water of the acrylic resin particles (B3) so that the D50 value of the particle size distribution after pulverization is 6 ⁇ m by the following wet pulverizer using the acrylic resin particles (B2) produced in Example 2 as a raw material and water as a medium. A dispersion was produced. Thereafter, the aqueous dispersion (C-1-1) was adjusted so that the solid content concentration was 0.5% by mass, and the physical properties were evaluated. The dispersibility in water was “AA”, and in the sticking evaluation 1 of pellets, “AA” was better than the pellets of acrylic block copolymers (A1 to A4). Further, foaming of the aqueous dispersion (C-1-1) did not occur and was “AA”. The results are shown in Table 2. ⁇ Wet grinder: Star mill ("LMZ" manufactured by Ashizawa Finetech Co., Ltd.)
- Example 4 Using the aqueous dispersion of acrylic resin particles (B3) produced in Example 3, the aqueous dispersion (C-1-2) was adjusted so that the solid content concentration was 0.2% by mass, and each physical property evaluation was performed. Carried out. The dispersibility in water was “AA”. In the evaluation 1 for the sticking property of the pellets, it was “A” for the pellets of the acrylic block copolymers (A1, A3, A4) that are easily stuck. Foaming of the aqueous dispersion (C-1-2) did not occur and was “AA”. The results are shown in Table 2.
- Example 5 In the same manner as in Example 3, an aqueous dispersion of acrylic resin particles (B4) was produced so that the D50 value after pulverization was 9 ⁇ m. Thereafter, the aqueous dispersion (C-1-3) was adjusted so that the solid content concentration was 0.5 mass%, and each physical property evaluation was performed. The dispersibility in water was “AA”, and in the evaluation of pellet stickiness 1, the pellet was “A” for the pellet of the acrylic block copolymer (A1) that was most likely to stick. Foaming of the aqueous dispersion (C-1-3) did not occur and was “AA”. The results are shown in Table 2.
- Example 6 In the same manner as in Example 3, an aqueous dispersion of acrylic resin particles (B5) was produced so that the D50 value after grinding was 17 ⁇ m. Thereafter, the aqueous dispersion (C-1-4) was adjusted so that the solid content concentration was 0.5% by mass, and each physical property evaluation was performed.
- the dispersibility in water was “A” because the particle size distribution (D10 value, D50 value, D90 value) tended to precipitate due to a slightly large particle size distribution.
- the evaluation 1 for the sticking property of the pellets it was “A” for the pellets of the acrylic block copolymers (A1, A3, A4) that are easily stuck. Foaming of the aqueous dispersion (C-1-4) did not occur and was “AA”.
- Table 2 The results are shown in Table 2.
- Aerosil R972 manufactured by Nippon Aerosil Co., Ltd., hydrophobic silicon dioxide was dispersed in water to a solid content concentration of 0.5% by mass to prepare an aqueous dispersion, and each physical property evaluation was performed. Since Aerosil R972 was hydrophobic, its dispersibility in water was “B” and was completely separated. In the evaluation of the sticking property of the pellet 1, since the dispersibility in water was poor, solid content could not be adhered to the pellet, and “B” was obtained for the pellet of the acrylic block copolymer (A1, A2). It was. Foaming of the aqueous dispersion was “AA” without any foaming although suspended matters were observed. The results are shown in Table 2.
- Comparative Example 2 Each physical property evaluation was performed in the same manner as in Comparative Example 1 except that Aerosil 200V (manufactured by Nippon Aerosil Co., Ltd., hydrophilic silicon dioxide) was used instead of Aerosil R972. Since Aerosil 200V is hydrophilic, its dispersibility in water was “AA”, and in pellet adhesion evaluation 1, the pellets of acrylic block copolymer (A1, A2) were “ B ". Foaming of the aqueous dispersion did not occur and was “AA”. The results are shown in Table 2.
- Aerosil 200V manufactured by Nippon Aerosil Co., Ltd., hydrophilic silicon dioxide
- Comparative Example 3 The same physical properties were evaluated as in Comparative Example 1 except that Alflow H50T (manufactured by NOF Corporation, ethylenebisstearic acid amide) was used instead of Aerosil R972. Dispersibility in water was “B” and was completely separated. In the evaluation of the sticking property of the pellet 1, since the dispersibility in water was poor, solid content could not be adhered to the pellet, and “B” was obtained for the pellet of the acrylic block copolymer (A1, A2). It was. Foaming of the aqueous dispersion was “AA” without any foaming although suspended matters were observed. The results are shown in Table 2.
- Comparative Example 4 The same physical properties were evaluated as in Comparative Example 1 except that Alfro H50ES (manufactured by NOF Corporation, ethylenebisstearic acid amide emulsion: non-volatile content: 42% by mass) was used instead of Aerosil R972.
- the dispersibility in water was “AA” and was good.
- “AA” was good for the pellet of the acrylic block copolymer (A1, A2).
- the foaming of the emulsion was “BB” and foaming of 5 mm or more occurred. The results are shown in Table 2.
- Example 7 The pellets of the acrylic block copolymer (A1) obtained in Production Example 1 and the acrylic block copolymer (A2) obtained in Production Example 2 were subjected to the following underwater cut extruder, extrusion conditions, and centrifugal dehydration. The machine was repelletized. As the circulating cooling water, the water dispersion (C-1-1) prepared in Example 3 was used. With this extrusion equipment, spherical pellets having a diameter of about 3 mm were obtained. At this time, no clogging due to the sticking of pellets was observed in the die part or the centrifugal dehydrator, and good processability was exhibited.
- Example 8 In addition to the method described in Example 7, the acrylic resin particles (B1) obtained in Example 1 were added to the pellets after centrifugal dehydration on the order of about 1000 ppm based on the mass of the pellets. Improved and the process passability was further improved.
- Comparative Example 7 Re-pelletization was carried out in the same manner as in Example 7 except that the emulsified liquid of Comparative Example 4 was used instead of the aqueous dispersion (C-1-1) prepared in Example 3. Foaming was severe and production efficiency was greatly reduced.
- Example 9 Transparency was evaluated using acrylic resin particles (B1) having a D50 value of 6 ⁇ m obtained by the method described in Example 1. Compared with the acrylic block copolymer (A2, A5) to which no anti-sticking agent was added, the transparency was not lowered and was good. The results are shown in Table 4.
- Aerosil containing silicon dioxide as a main component has poor adhesion resistance. Since Alflow H50T of Comparative Example 3 is not dispersed in water, it is poor in handleability and inferior in production efficiency. Further, as shown in Comparative Example 10, the transparency was lowered.
- Alflow H50ES of Comparative Example 4 is an emulsified liquid, so its dispersibility in water was good and its anti-sticking property was good, but foaming was remarkable and production efficiency was poor.
Abstract
Description
[1]アクリル酸アルキルエステル単位からなる少なくとも1つの重合体ブロック(a1)とメタクリル酸アルキルエステル単位からなる少なくとも1つの重合体ブロック(a2)とを有するアクリル系ブロック共重合体(A)の原料ペレットを、アクリル樹脂粒子(B)を含み、界面活性剤を含まない水分散液(C)に接触させる工程、及びペレットに付着した水分を除去する工程を含むアクリル系ブロック共重合体(A)を含むペレット(D)の製造方法;
[2]水分散液(C)が、湿式粉砕されたアクリル樹脂粒子(B)を含む水分散液(C-1)、及び乾式粉砕されたアクリル樹脂粒子(B)を含む水分散液(C-2)からなる群より選ばれる少なくとも1つである、[1]に記載のアクリル系ブロック共重合体(A)を含むペレット(D)の製造方法;
[3]水分散液(C)が、湿式粉砕されたアクリル樹脂粒子(B)を含む水分散液(C-1)である、[2]に記載のアクリル系ブロック共重合体(A)を含むペレット(D)の製造方法。
[4]水分散液(C)に含まれるアクリル樹脂粒子(B)がメタクリル酸メチル単位を85質量%以上含有する、[1]~[3]のいずれかに記載のアクリル系ブロック共重合体(A)を含むペレット(D)の製造方法;
[5]水分散液(C)に含まれるアクリル樹脂粒子(B)の粒子径分布のD50値が1~50μmである、[1]~[4]のいずれかに記載のアクリル系ブロック共重合体(A)を含むペレット(D)の製造方法;
[6]水分散液(C)に含まれるアクリル樹脂粒子(B)の固形分濃度が0.05~2.0質量%である、[1]~[5]のいずれかに記載のアクリル系ブロック共重合体(A)を含むペレット(D)の製造方法;及び
[7]アクリル系ブロック共重合体(A)の原料ペレットを接触させる工程の水分散液(C)の温度が10~80℃である、[1]~[6]のいずれかに記載のアクリル系ブロック共重合体(A)を含むペレット(D)の製造方法;
[8]アクリル系ブロック共重合体(A)が、アクリル酸アルキルエステル単位からなる重合体ブロック(a1)の両末端にそれぞれメタクリル酸アルキルエステル単位からなる重合体ブロック(a2)が結合した構造を分子内に少なくとも1つ有し、重量平均分子量が30,000~250,000であり、重合体ブロック(a2)の含有量が5~40質量%である、[1]~[7]のいずれかに記載のアクリル系ブロック共重合体(A)を含むペレット(D)の製造方法;及び
[9][1]~[8]のいずれかの製造方法により製造された、アクリル系ブロック共重合体(A)を含むペレット(D);
を提供することにより達成される。
本発明で用いる原料ペレットに含まれるアクリル系ブロック共重合体(A)は、アクリル酸アルキルエステル単位からなる少なくとも1つの重合体ブロック(a1)とメタクリル酸アルキルエステル単位からなる少なくとも1つの重合体ブロック(a2)とを有する。
(a2-a1)n
(a2-a1)n-a2
a1-(a2-a1)n
(a2-a1)n-Z
(a1-a2)n-Z
(式中、nは1~30の整数、Zはカップリング部位(カップリング剤がポリマー末端と反応して化学結合を形成した後のカップリング部位)を表す)で表されるものであることが好ましい。また、上記nの値は、1~15であることが好ましく、1~8であることがより好ましく、1~4であることがさらに好ましい。
具体的には、下記一般式:
(a2-a1)n1
(a2-a1)n-a2
a1-(a2-a1)n1
(a2-a1)n1-Z
(a1-a2)n1-Z
(式中、nは1~30の整数、n1は2~30の整数、Zはカップリング部位(カップリング剤がポリマー末端と反応して化学結合を形成した後のカップリング部位)を表す)で表されるものであることが好ましい。上記n1の値は、2~15であることが好ましく、2~8であることがより好ましく、2~4であることがさらに好ましい。
重合体ブロック(a2)の含有量が5質量%未満であると、アクリル系ブロック共重合体(A)の流動性が高く液状であったり、アクリル系ブロック共重合体(A)からペレットを製造する際、例えばアンダーウォーターカッターなどでカットしてもペレット形状を維持することができない場合がある。重合体ブロック(a2)の含有量が40質量%を超えると、柔軟性に優れるアクリル系ブロック共重合体(A)を含むペレットが得られなくなる傾向がある。
AlR1R2R3 (1)
(式(1)中、R1、R2及びR3はそれぞれ独立して置換基を有してもよいアルキル基、置換基を有していてもよいシクロアルキル基、置換基を有してもよいアリール基、置換基を有していてもよいアラルキル基、置換基を有してもよいアルコキシ基、置換基を有してもよいアリールオキシ基又はN,N-二置換アミノ基を表すか、或いはR1が上記したいずれかの基であり、R2及びR3が一緒になって置換基を有していてもよいアリーレンジオキシ基を形成している。)で表される有機アルミニウム化合物の存在下に、必要に応じて、反応系内に、ジメチルエーテル、ジメトキシエタン、ジエトキシエタン、12-クラウン-4などのエーテル化合物;トリエチルアミン、N,N,N',N'-テトラメチルエチレンジアミン、N,N,N',N",N"-ペンタメチルジエチレントリアミン、1,1,4,7,10,10-ヘキサメチルトリエチレンテトラミン、ピリジン、2,2'-ジピリジルなどの含窒素化合物をさらに添加して、(メタ)アクリル酸エステルを重合させる方法を採用することができる。
本発明で用いる水分散液(C)は、アクリル樹脂粒子(B)を含み、界面活性剤を含まない。
かかる他の単量体単位を構成し得る他の単量体としては、メタクリル酸エチル、メタクリル酸プロピル、メタクリル酸n-ブチル、メタクリル酸t-ブチル、メタクリル酸n-ヘキシル、メタクリル酸シクロヘキシル、メタクリル酸2-エチルヘキシル、メタクリル酸n-オクチル、メタクリル酸ラウリル、メタクリル酸トリデシル、メタクリル酸ステアリル、メタクリル酸イソボルニル等のメタクリル酸アルキルエステル(ただしメタクリル酸メチルを除く);アクリル酸メチル、アクリル酸エチル、アクリル酸プロピル、アクリル酸n-ブチル、アクリル酸t-ブチル、アクリル酸n-ヘキシル、アクリル酸シクロヘキシル、アクリル酸2-エチルヘキシル、アクリル酸n-オクチル、アクリル酸ラウリル、アクリル酸トリデシル、アクリル酸ステアリルなどのアクリル酸アルキルエステル;(メタ)アクリル酸メトキシエチル、(メタ)アクリル酸エトキシエチル、(メタ)アクリル酸ジエチルアミノエチル、(メタ)アクリル酸グリシジル、(メタ)アクリル酸テトラヒドロフルフリルなどの(メタ)アクリル酸アルキルエステル以外の(メタ)アクリル酸エステル;スチレン、α-メチルスチレン、p-メチルスチレンなどの芳香族ビニル化合物;ブタジエン、イソプレンなどの共役ジエン化合物;エチレン、プロピレンなどのオレフィン化合物;アクリル酸;メタクリル酸などが挙げられる。
他の単量体単位の含有量は、15質量%以下であることが好ましく、12質量%以下であることがより好ましく、10質量%以下であることがさらに好ましい。また、他の単量体単位の含有量は0質量%であってもよい。
上記アクリル樹脂の重量平均分子量は50,000~100,000であることが好ましい。重量平均分子量が上記範囲にあることにより、アクリル系ブロック共重合体(A)との相容性が良好で、成形体、あるいは、溶剤型粘接着剤とした場合に透明性が高い。また、アクリル系ブロック共重合体(A)との相容性と耐膠着性とのバランスの点から、重量平均分子量は60,000~95,000であることがより好ましく、70,000~90,000であることがさらに好ましい。
具体的な製造方法としては、アクリル樹脂を、水を溶媒に用いたビーズミル湿式粉砕方法によって所定の粒子径分布に粉砕後、水分散液で回収し、得られた水分散液をさらに希釈することで水分散液(C-1)を製造することができる。なお、湿式粉砕の運転中に水分散液の固形分濃度が高すぎると高粘度になり運転に支障をきたすため、固形分濃度は30質量%以下が適当である。また、湿式粉砕に用いるアクリル樹脂は予めACMパルベライザーやカウンタージェットミルなどの乾式粉砕方法で一次粉砕したものを使用することが好ましく、さらに、乾式粉砕で使用するアクリル樹脂は300μm程度のビーズ形状であることがより好ましい。また、アクリル樹脂をACMパルベライザーやカウンタージェットミルなどの乾式粉砕方法で所定の粒子径分布に粉砕後、粉砕されたアクリル樹脂粒子(B)を水へ分散させて水分散液(C-2)を製造することができる。
アクリル系ブロック共重合体の重量平均分子量、数平均分子量、及び分子量分布は、ゲル・パーミエイション・クロマトグラフィー(以下GPCと略記する)によりポリスチレン換算分子量で求めた。詳細は以下のとおりである。
・装置:東ソー株式会社製GPC装置「HLC-8020」
・分離カラム:東ソー株式会社製の「TSKgel GMHXL」、「G4000HXL」及び「G5000HXL」を直列に連結
・溶離剤:テトラヒドロフラン
・溶離剤流量:1.0ml/分
・カラム温度:40℃
・検出方法:示差屈折率(RI)
アクリル系ブロック共重合体における各重合体ブロックの構成割合は、1H-NMR(1H-核磁気共鳴)測定によって求めた。詳細は以下のとおりである。
・装置:日本電子株式会社製 核磁気共鳴装置「JNM-LA400」
・重溶媒:重水素化クロロホルム
水分散液中のアクリル樹脂粒子の粒子径分布(D10値、D50値、D90値)はレーザー回折式粒子径分布測定装置を用いて求めた。詳細は以下のとおりである。
・装置:マイクロトラック・ベル株式会社製 レーザー回折・散乱式 粒子径分布測定装置「マイクロトラックMT3000II」
・測定溶媒:水
なお、比較例1~2においては、製造元が公表する平均粒子径を記載した。また比較例3~4においては、特開2016-188327号公報の実施例1(アルフローH50ES)及び実施例4(アルフローH50T)に記載の数値を記載した。
下記実施例又は比較例で調製した水分散液又は乳化液を100mlのスクリュ管に入れ、スクリュ管ごと15秒間上下に激しく振り続け、0.5時間室温で静置させた後に、沈殿物・浮遊物があるか目視で確認した。
AA:沈殿物・浮遊物なし
A:一部沈殿物・浮遊物が見られる
B:沈殿物・浮遊物が多く、完全に分離している
1.ポリエチレン製のサンプル袋(縦240mm×横170mm×厚み0.08mm)に、アクリル系ブロック共重合体の原料ペレット15gと、下記実施例又は比較例で調製した水分散液又は乳化液40gを予め60℃に加熱してから加え、上下に軽く振りながら原料ペレットを水分散液に15秒間浸漬させる。
2.浸漬後、水切りネットを使用してペレットと水分散液に分ける。
3.水切りネットに残ったペレットに対して、水切りネットの上からエアーガンを使用してエアブローを行い、ペレット表面に付着した水分を飛ばす。
4.水気が無くなったペレットを手のひらに受け、5秒間握り潰した後のペレットが解れた状態又は、塊になっているかを評価した。
AA:ペレットは完全に解れている
A:ペレットは一部塊状である
B:ペレットは一つの塊状である
アクリル系ブロック共重合体の原料ペレット30gに対して、アクリル樹脂粒子又は市販の膠着防止剤を質量比1000ppmで添加し、100mlのプラスチック製ビーカーに移し、単位面積あたりの荷重が103g/cm2になるように重りを載せ、40℃の乾燥機に1週間静置し、プラスチック製ビーカーからペレットを取り出す際の膠着状態を目視で観察した。
AA:ペレットは完全に解れている
A:ペレットは一部塊状であるが、指で触れると簡単に崩れる
B:ペレットは一部塊状であり、指で触れても簡単に崩れない
下記実施例又は比較例で調製した水分散液又は乳化液を100mlのスクリュ管に入れ、62℃で1時間加熱後、水分散液又は乳化液の温度が60℃であることを確認し、スクリュ管ごと15秒間上下に激しく振り続け、30秒間室温で静置させた直後に残存している泡(泡と水分散液又は乳化液の界面から、泡の最上部までの高さ)を評価した。
AA:0mm以上1mm未満の泡
A:1mm以上5mm未満の泡
B:5mm以上の泡
アクリル系ブロック共重合体の原料ペレットに対して、アクリル樹脂粒子又は市販の膠着防止剤を質量比0.1phr添加し、二軸押出機(KRUPP WERNER & PFLEIDERER社製「ZSK-25」)にてストランドカット方式によりペレット化後、射出成形機(住友重機械工業株式会社製「SE18DU」)により、下記のシリンダー温度及び金型温度で、50mm×50mm、厚み3mmの成形体を作製し、直読ヘイズメーター(日本電色工業株式会社製「NDH5000」)により、ISO 13468-1に準拠してヘーズ(HAZE)と全光線透過率(TT)を測定し、これを透明性の指標とした。
・シリンダー温度:210℃
・金型温度:50℃
(1)100Lの重合槽内部を窒素で置換した後、室温にて撹拌しながら、トルエン46.5kgと1,2-ジメトキシエタン1.08kgを加え、続いて、イソブチルビス(2,6-ジ-t-ブチル-4-メチルフェノキシ)アルミニウム808.5mmolを含有するトルエン溶液1.60kgを加え、さらにsec-ブチルリチウム103.95mmolを含有するsec-ブチルリチウムのシクロヘキサン溶液0.06kgを加えた。
(2)続いて、これにメタクリル酸メチル1.08kgを加えた。反応液は当初、黄色に着色していたが、室温にて60分間撹拌後には無色となった。
(3)引き続き、重合液の内部温度を-30℃に冷却し、アクリル酸n-ブチル13.53kgを2時間かけて滴下し、滴下終了後-30℃にて5分間撹拌した。
(4)さらに、これにメタクリル酸メチル1.49kgを加え、一晩室温にて撹拌した。
(5)メタノ-ル0.50kgを添加して重合反応を停止した後、得られた反応液を495kgのメタノール中に注ぎ、液状沈殿物を析出させた。その後、液状沈殿物を回収し、乾燥させることにより、メタクリル酸メチル単位含有量(重合体ブロック(a2)の含有量)16.3質量%、重量平均分子量159,000、分子量分布(重量平均分子量/数平均分子量)1.10のアクリル系トリブロック共重合体(A1)14.8kgを得た。
(6)上記製造例1を10回繰り返し、アクリル系トリブロック共重合体(A1)約150kgを得た。
(7)得られたアクリル系トリブロック共重合体(A1)を、二軸押出機(KRUPP WERNER & PFLEIDERER社製「ZSK-25」)にてストランドカット方式によりペレット化した。
(1)100Lの重合槽内部を窒素で置換した後、室温にて撹拌しながら、トルエン43.4kgと1,2-ジメトキシエタン2.17kgを加え、続いて、イソブチルビス(2,6-ジ-t-ブチル-4-メチルフェノキシ)アルミニウム2008.0mmolを含有するトルエン溶液4.0kgを加え、さらにsec-ブチルリチウム249.8mmolを含有するsec-ブチルリチウムのシクロヘキサン溶液0.14kgを加えた。
(2)続いて、これにメタクリル酸メチル2.31kgを加えた。反応液は当初、黄色に着色していたが、室温にて60分間撹拌後には無色となった。
(3)引き続き、重合液の内部温度を-30℃に冷却し、アクリル酸n-ブチル10.49kgを2時間かけて滴下し、滴下終了後-30℃にて5分間撹拌した。
(4)さらに、これにメタクリル酸メチル2.19kgを加え、一晩室温にて撹拌した。
(5)メタノ-ル0.67kgを添加して重合反応を停止した後、得られた反応液を500kgのメタノール中に注ぎ、液状沈殿物を析出させた。その後、液状沈殿物を回収し、乾燥させることにより、メタクリル酸メチル単位含有量(重合体ブロック(a2)の含有量)30.3質量%、重量平均分子量61,000、分子量分布1.09のアクリル系トリブロック共重合体(A2)14.7kgを得た。
(6)上記製造例2を10回繰り返し、アクリル系トリブロック共重合体(A2)約150kgを得た。
(7)得られたアクリル系トリブロック共重合体(A2)を、二軸押出機(KRUPP WERNER & PFLEIDERER社製「ZSK-25」)にてストランドカット方式によりペレット化した。
(1)3Lの三口フラスコに三方コックを付け内部を窒素で置換した後、室温にて撹拌しながら、トルエン1409gと1,2-ジメトキシエタン32.7gを加え、続いて、イソブチルビス(2,6-ジ-t-ブチル-4-メチルフェノキシ)アルミニウム24.5mmolを含有するトルエン溶液48.6gを加え、さらにsec-ブチルリチウム4.35mmolを含有するsec-ブチルリチウムのシクロヘキサン溶液2.55gを加えた。
(2)続いて、これにメタクリル酸メチル43.5gを加えた。反応液は当初、黄色に着色していたが、室温にて60分間撹拌後には無色となった。
(3)引き続き、重合液の内部温度を-30℃に冷却し、アクリル酸n-ブチル360gを2時間かけて滴下し、滴下終了後-30℃にて5分間撹拌した。
(4)さらに、これにメタクリル酸メチル61.5gを加え、一晩室温にて撹拌した。
(5)メタノ-ル15gを添加して重合反応を停止した後、得られた反応液を15kgのメタノール中に注ぎ、液状沈殿物を析出させた。その後、液状沈殿物を回収し、乾燥させることにより、メタクリル酸メチル単位含有量(重合体ブロック(a2)の含有量)22.5質量%、重量平均分子量111,000、分子量分布1.09のアクリル系トリブロック共重合体(A3)450gを得た。
(6)得られたアクリル系トリブロック共重合体(A3)を、小型二軸押出機(株式会社テクノベル製「KZW-15」)にてストランドカット方式によりペレット化した。
(1)3Lの三口フラスコに三方コックを付け内部を窒素で置換した後、室温にて撹拌しながら、トルエン1409gと1,2-ジメトキシエタン32.7gを加え、続いて、イソブチルビス(2,6-ジ-t-ブチル-4-メチルフェノキシ)アルミニウム24.5mmolを含有するトルエン溶液48.6gを加え、さらにsec-ブチルリチウム2.55mmolを含有するsec-ブチルリチウムのシクロヘキサン溶液1.50gを加えた。
(2)続いて、これにメタクリル酸メチル22.7gを加えた。反応液は当初、黄色に着色していたが、室温にて60分間撹拌後には無色となった。
(3)引き続き、重合液の内部温度を-30℃に冷却し、アクリル酸n-ブチル434gを2時間かけて滴下し、滴下終了後-30℃にて5分間撹拌した。
(4)さらに、これにメタクリル酸メチル29.4gを加え、一晩室温にて撹拌した。
(5)メタノ-ル15gを添加して重合反応を停止した後、得られた反応液を15kgのメタノール中に注ぎ、液状沈殿物を析出させた。その後、液状沈殿物を回収し、乾燥させることにより、メタクリル酸メチル単位含有量(重合体ブロック(a2)の含有量)11.0質量%、重量平均分子量200,000、分子量分布1.11のアクリル系トリブロック共重合体(A4)440gを得た。
(6)得られたアクリル系トリブロック共重合体(A4)を、小型二軸押出機(株式会社テクノベル製「KZW-15」)にてストランドカット方式によりペレット化した。
(1)5Lの三口フラスコに三方コックを付け内部を窒素で置換した後、室温にて撹拌しながら、トルエン1542gと1,2-ジメトキシエタン100gを加え、続いて、イソブチルビス(2,6-ジ-t-ブチル-4-メチルフェノキシ)アルミニウム92.0mmolを含有するトルエン溶液183gを加え、さらにsec-ブチルリチウム11.5mmolを含有するsec-ブチルリチウムのシクロヘキサン溶液1.70gを加えた。
(2)続いて、これにメタクリル酸メチル74.9gを加えた。反応液は当初、黄色に着色していたが、室温にて60分間撹拌後には無色となった。
(3)引き続き、重合液の内部温度を-30℃に冷却し、アクリル酸n-ブチル253gを2時間かけて滴下し、滴下終了後-30℃にて5分間撹拌した。
(4)さらに、これにメタクリル酸メチル184.4gを加え、一晩室温にて撹拌した。
(5)メタノ-ル45gを添加して重合反応を停止した後、得られた反応液を15kgのメタノール中に注ぎ、液状沈殿物を析出させた。その後、液状沈殿物を回収し、乾燥させることにより、メタクリル酸メチル単位含有量(重合体ブロック(a2)の含有量)50.0質量%、重量平均分子量62,000、分子量分布1.12のアクリル系トリブロック共重合体(A5)450gを得た。
(6)上記製造例5を5回繰り返し、アクリル系トリブロック共重合体(A2)約2.3kgを得た。
(7)得られたアクリル系トリブロック共重合体(A5)を、二軸押出機(KRUPP WERNER & PFLEIDERER社製「ZSK-25」)にてストランドカット方式によりペレット化した。
アクリル樹脂(メタクリル酸メチル単位含有量:90質量%、重量平均分子量:85,000)を用いて、下記の乾式粉砕機によって粉砕後の粒子径分布のD50値=6μmになるようにアクリル樹脂粒子(B1)を製造した。得られたアクリル樹脂粒子(B1)を固形分濃度が0.5質量%になるように水に分散させ、水分散液(C-2-1)を調製し、各物性評価を実施した。水への分散性は乾式粉砕のみで製造したことからわずかに沈殿する傾向が見られ「A」であり、ペレットの膠着性評価1においては、アクリル系ブロック共重合体(A1~A4)のペレットに対して「AA」で良好であった。また、水分散液(C-2-1)の泡立ちは発生せず「AA」であった。結果を表2に記載した。
・乾式粉砕機:衝撃式粉砕機(ホソカワミクロン株式会社製「ACMパルベライザー-10」)、カウンタージェットミル(ホソカワミクロン株式会社製「200AFG」)
アクリル樹脂(メタクリル酸メチル単位含有量:90質量%、重量平均分子量:85,000)を用いて、下記の乾式粉砕機によって粉砕後の粒子径分布のD50値=27μmになるようにアクリル樹脂粒子(B2)を製造した。その後、実施例1と同様にして固形分濃度が0.5質量%になるように水に分散させ、水分散液(C-2-2)を調製し、各物性評価を実施した。水への分散性は粒子径分布(D10値、D50値、D90値)がやや大きいことが原因で沈殿する傾向が見られ「A」であった。ペレットの膠着性評価1においては、膠着しやすいアクリル系ブロック共重合体(A1、A3、A4)のペレットに対しては「A」であった。また、水分散液(C-2-2)の泡立ちは発生せず「AA」であった。結果を表2に記載した。
・乾式粉砕機:衝撃式粉砕機(ホソカワミクロン株式会社製「ACMパルベライザー-10」)
実施例2で製造したアクリル樹脂粒子(B2)を原料として、媒体を水とした下記の湿式粉砕機によって粉砕後の粒子径分布のD50値=6μmになるようにアクリル樹脂粒子(B3)の水分散液を製造した。その後、固形分濃度が0.5質量%になるように水分散液(C-1-1)を調整し、各物性評価を実施した。水への分散性は「AA」であり、ペレットの膠着性評価1においては、アクリル系ブロック共重合体(A1~A4)のペレットに対して「AA」で良好であった。また、水分散液(C-1-1)の泡立ちは発生せず「AA」であった。結果を表2に記載した。
・湿式粉砕機:スターミル(アシザワ・ファインテック株式会社製「LMZ」)
実施例3で製造したアクリル樹脂粒子(B3)の水分散液を用いて、固形分濃度が0.2質量%になるように水分散液(C-1-2)を調整し、各物性評価を実施した。水への分散性は「AA」であった。ペレットの膠着性評価1においては、膠着しやすいアクリル系ブロック共重合体(A1、A3、A4)のペレットに対しては「A」であった。水分散液(C-1-2)の泡立ちは発生せず「AA」であった。結果を表2に記載した。
実施例3と同様の方法で、粉砕後のD50値=9μmになるようにアクリル樹脂粒子(B4)の水分散液を製造した。その後、固形分濃度が0.5質量%になるように水分散液(C-1-3)を調整し、各物性評価を実施した。水への分散性は「AA」であり、ペレットの膠着性評価1においては、最も膠着しやすいアクリル系ブロック共重合体(A1)のペレットに対しては「A」であった。水分散液(C-1-3)の泡立ちは発生せず「AA」であった。結果を表2に記載した。
実施例3と同様の方法で、粉砕後のD50値=17μmになるようにアクリル樹脂粒子(B5)の水分散液を製造した。その後、固形分濃度が0.5質量%になるように水分散液(C-1-4)を調整し、各物性評価を実施した。水への分散性は粒子径分布(D10値、D50値、D90値)がやや大きいことが原因で沈殿する傾向が見られ「A」であった。ペレットの膠着性評価1においては、膠着しやすいアクリル系ブロック共重合体(A1、A3、A4)のペレットに対しては「A」であった。水分散液(C-1-4)の泡立ちは発生せず「AA」であった。結果を表2に記載した。
アエロジルR972(日本アエロジル株式会社製、疎水性二酸化珪素)を固形分濃度が0.5質量%になるように水に分散させ、水分散液を調製し、各物性評価を実施した。アエロジルR972は疎水性であるため水への分散性は「B」であり完全に分離した。ペレットの膠着性評価1においては、水への分散性が悪かったためペレットに固形分を付着させることができず、アクリル系ブロック共重合体(A1、A2)のペレットに対して「B」であった。水分散液の泡立ちは、浮遊物が見られるものの泡立ちは発生せず「AA」であった。結果を表2に記載した。
アエロジルR972の代わりにアエロジル200V(日本アエロジル株式会社製、親水性二酸化珪素)を用いた以外は比較例1と同様の調製を行い、各物性評価を実施した。アエロジル200Vは親水性であるため水への分散性は「AA」で良好であったが、ペレットの膠着性評価1においては、アクリル系ブロック共重合体(A1、A2)のペレットに対して「B」であった。水分散液の泡立ちは発生せず「AA」であった。結果を表2に記載した。
アエロジルR972の代わりにアルフローH50T(日油株式会社製、エチレンビスステアリン酸アミド)を用いた以外は比較例1と同様の調製を行い、各物性評価を実施した。水への分散性は「B」であり完全に分離した。ペレットの膠着性評価1においては、水への分散性が悪かったためペレットに固形分を付着させることができず、アクリル系ブロック共重合体(A1、A2)のペレットに対して「B」であった。水分散液の泡立ちは、浮遊物が見られるものの泡立ちは発生せず「AA」であった。結果を表2に記載した。
アエロジルR972の代わりにアルフローH50ES(日油株式会社製、エチレンビスステアリン酸アミド乳化液:不揮発分42質量%)を用いた以外は比較例1と同様の調製を行い、各物性評価を実施した。水への分散性は「AA」で良好であった。ペレットの膠着性評価1においては、アクリル系ブロック共重合体(A1、A2)のペレットに対して「AA」で良好であった。乳化液の泡立ちは「BB」であり5mm以上の泡立ちが発生した。結果を表2に記載した。
実施例1に記載の方法で得られたD50値=6μmのアクリル樹脂粒子(B1)を、アクリル系ブロック共重合体(A1、A2)のペレットに対して質量比1000ppmで添加し、ペレットの膠着性評価2を実施したところ、アクリル系ブロック共重合体(A1、A2)のペレットに対して「AA」であった。結果を表3に記載した。
アクリル樹脂粒子(B1)を、実施例2に記載の方法で得られたD50値=27μmのアクリル樹脂粒子(B2)に変更した以外は参考例1と同様に、ペレットの膠着性評価2を実施したところ、アクリル系ブロック共重合体(A1、A2)のペレットに対して「A」であった。結果を表3に記載した。
アクリル樹脂粒子(B1)を、アエロジルR972に変更した以外は参考例1と同様に、ペレットの膠着性評価2を実施したところ、アクリル系ブロック共重合体(A1)のペレットに対しては「B」であった。結果を表3に記載した。
アクリル樹脂粒子(B1)を、アルフローH50Tに変更した以外は参考例1と同様に、ペレットの膠着性評価2を実施したところ、アクリル系ブロック共重合体(A1、A2)のペレットに対して「B」であった。結果を表3に記載した。
製造例1で得られたアクリル系ブロック共重合体(A1)及び、製造例2で得られたアクリル系ブロック共重合体(A2)のペレットを、下記アンダーウォーターカット押出機、押出条件、遠心脱水機で再ペレット化を実施した。循環冷却水には、実施例3で調製した水分散液(C-1-1)を用いた。この押出設備により直径3mm程度の球状ペレットが得られた。このとき、ダイス部あるいは遠心脱水機内部で、ペレットの膠着に起因する詰まりは観察されず、良好な工程通過性を示した。
・押出機:JSW-JBaII 二軸 スクリュ径54mm、L/D=42
・押出条件:温度230℃ 樹脂吐出200kg/h スクリュ回転数520rpm ダイス孔径2.4mm×48穴 4枚刃カッター 循環冷却水(PCW)45℃ PCW流量200L/min
・遠心脱水機(株式会社日本製鋼所製)
実施例7に記載の方法に加えて、実施例1で得られたアクリル樹脂粒子(B1)を、遠心脱水後のペレットにオンラインで、ペレットの質量に対して1000ppm程度添加したところ、耐膠着性がより良くなり、工程通過性がさらに向上した。
実施例3で調製した水分散液(C-1-1)の代わりに、比較例4の乳化液を用いた以外は、実施例7と同様の方法で再ペレット化を実施したところ、PCWの泡立ちが激しく、生産効率が大幅に低下した。
実施例1に記載の方法で得られたD50値=6μmのアクリル樹脂粒子(B1)を用いて、透明性を評価した。膠着防止剤未添加のアクリル系ブロック共重合体(A2、A5)に比べて、透明性の低下は見られず良好であった。結果を表4に記載した。
表4に記載の粒子を用いて、透明性を評価した。膠着防止剤未添加のアクリル系ブロック共重合体(A2、A5)に比べて、透明性が低下する傾向が見られ、無機物に由来したブツのような外観不良が発生した。結果を表4に記載した。
表4に記載の粒子を用いて、透明性を評価した。膠着防止剤未添加のアクリル系ブロック共重合体(A2、A5)に比べて、透明性が大幅に低下する傾向が見られた。結果を表4に記載した。
膠着防止剤未添加のアクリル系ブロック共重合体(A2、A5)を用いて、透明性を評価した。
比較例3のアルフローH50Tは水に分散しないため取り扱い性が悪く、生産効率が劣る。また、比較例10に示すように、透明性が低下した。
Claims (9)
- アクリル酸アルキルエステル単位からなる少なくとも1つの重合体ブロック(a1)とメタクリル酸アルキルエステル単位からなる少なくとも1つの重合体ブロック(a2)とを有するアクリル系ブロック共重合体(A)の原料ペレットを、アクリル樹脂粒子(B)を含み、界面活性剤を含まない水分散液(C)に接触させる工程、
及びペレットに付着した水分を除去する工程を含む
アクリル系ブロック共重合体(A)を含むペレット(D)の製造方法。 - 水分散液(C)が、湿式粉砕されたアクリル樹脂粒子(B)を含む水分散液(C-1)、及び乾式粉砕されたアクリル樹脂粒子(B)を含む水分散液(C-2)からなる群より選ばれる少なくとも1つである、請求項1に記載のアクリル系ブロック共重合体(A)を含むペレット(D)の製造方法。
- 水分散液(C)が、湿式粉砕されたアクリル樹脂粒子(B)を含む水分散液(C-1)である、請求項2に記載のアクリル系ブロック共重合体(A)を含むペレット(D)の製造方法。
- 水分散液(C)に含まれるアクリル樹脂粒子(B)がメタクリル酸メチル単位を85質量%以上含有する、請求項1~3のいずれかに記載のアクリル系ブロック共重合体(A)を含むペレット(D)の製造方法。
- 水分散液(C)に含まれるアクリル樹脂粒子(B)の粒子径分布のD50値が1~50μmである、請求項1~4のいずれかに記載のアクリル系ブロック共重合体(A)を含むペレット(D)の製造方法。
- 水分散液(C)に含まれるアクリル樹脂粒子(B)の固形分濃度が0.05~2.0質量%である、請求項1~5のいずれかに記載のアクリル系ブロック共重合体(A)を含むペレット(D)の製造方法。
- アクリル系ブロック共重合体(A)の原料ペレットを接触させる工程の水分散液(C)の温度が10~80℃である、請求項1~6のいずれかに記載のアクリル系ブロック共重合体(A)を含むペレット(D)の製造方法。
- アクリル系ブロック共重合体(A)が、アクリル酸アルキルエステル単位からなる重合体ブロック(a1)の両末端にそれぞれメタクリル酸アルキルエステル単位からなる重合体ブロック(a2)が結合した構造を分子内に少なくとも1つ有し、重量平均分子量が30,000~250,000であり、重合体ブロック(a2)の含有量が5~40質量%である、請求項1~7のいずれかに記載のアクリル系ブロック共重合体(A)を含むペレット(D)の製造方法。
- 請求項1~8のいずれかの製造方法により製造された、アクリル系ブロック共重合体(A)を含むペレット(D)。
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CA3103445A CA3103445A1 (en) | 2018-06-12 | 2019-05-28 | Method for producing acrylic block copolymer pellets |
KR1020207038068A KR20210019032A (ko) | 2018-06-12 | 2019-05-28 | 아크릴계 블록 공중합체 펠릿의 제조 방법 |
JP2019561202A JP6726811B2 (ja) | 2018-06-12 | 2019-05-28 | アクリル系ブロック共重合体ペレットの製造方法 |
US16/973,924 US20210115197A1 (en) | 2018-06-12 | 2019-05-28 | Method for producing acrylic block copolymer pellets |
EP19818794.0A EP3808794A4 (en) | 2018-06-12 | 2019-05-28 | METHOD FOR PRODUCING ACRYLIC BLOCK COPOLYMER PELLETS |
CN201980039133.0A CN112272683B (zh) | 2018-06-12 | 2019-05-28 | 丙烯酸类嵌段共聚物粒料的制造方法 |
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- 2019-05-28 US US16/973,924 patent/US20210115197A1/en active Pending
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JP7166199B2 (ja) | 2019-02-28 | 2022-11-07 | 株式会社クラレ | アクリル系ブロック共重合体ペレットの製造方法 |
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CA3103445A1 (en) | 2019-12-19 |
EP3808794A4 (en) | 2022-03-23 |
TW202003671A (zh) | 2020-01-16 |
TWI802710B (zh) | 2023-05-21 |
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