CN117126629A - 一种bopp薄膜标签用丙烯酸酯乳胶压敏胶及其制备方法 - Google Patents
一种bopp薄膜标签用丙烯酸酯乳胶压敏胶及其制备方法 Download PDFInfo
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- CN117126629A CN117126629A CN202310985277.3A CN202310985277A CN117126629A CN 117126629 A CN117126629 A CN 117126629A CN 202310985277 A CN202310985277 A CN 202310985277A CN 117126629 A CN117126629 A CN 117126629A
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- Prior art keywords
- sensitive adhesive
- sodium
- bopp film
- parts
- acrylate
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- 239000004820 Pressure-sensitive adhesive Substances 0.000 title claims abstract description 43
- 229920006378 biaxially oriented polypropylene Polymers 0.000 title claims abstract description 37
- 239000011127 biaxially oriented polypropylene Substances 0.000 title claims abstract description 37
- 239000000839 emulsion Substances 0.000 title claims abstract description 27
- -1 Acrylic ester Chemical class 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000000178 monomer Substances 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000008367 deionised water Substances 0.000 claims abstract description 19
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 19
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 18
- 239000003999 initiator Substances 0.000 claims abstract description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 8
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 7
- 239000007800 oxidant agent Substances 0.000 claims abstract description 7
- 239000000080 wetting agent Substances 0.000 claims abstract description 7
- 230000001590 oxidative effect Effects 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000000872 buffer Substances 0.000 claims abstract description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 29
- 239000004816 latex Substances 0.000 claims description 22
- 229920000126 latex Polymers 0.000 claims description 22
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 12
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 12
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 11
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims description 11
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- IBVAQQYNSHJXBV-UHFFFAOYSA-N adipic acid dihydrazide Chemical compound NNC(=O)CCCCC(=O)NN IBVAQQYNSHJXBV-UHFFFAOYSA-N 0.000 claims description 10
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 10
- OMNKZBIFPJNNIO-UHFFFAOYSA-N n-(2-methyl-4-oxopentan-2-yl)prop-2-enamide Chemical compound CC(=O)CC(C)(C)NC(=O)C=C OMNKZBIFPJNNIO-UHFFFAOYSA-N 0.000 claims description 10
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 9
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 9
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 claims description 6
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 4
- CDOUZKKFHVEKRI-UHFFFAOYSA-N 3-bromo-n-[(prop-2-enoylamino)methyl]propanamide Chemical compound BrCCC(=O)NCNC(=O)C=C CDOUZKKFHVEKRI-UHFFFAOYSA-N 0.000 claims description 4
- DXPPIEDUBFUSEZ-UHFFFAOYSA-N 6-methylheptyl prop-2-enoate Chemical compound CC(C)CCCCCOC(=O)C=C DXPPIEDUBFUSEZ-UHFFFAOYSA-N 0.000 claims description 4
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 4
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 4
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 4
- 239000001099 ammonium carbonate Substances 0.000 claims description 4
- 239000006172 buffering agent Substances 0.000 claims description 4
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 235000019329 dioctyl sodium sulphosuccinate Nutrition 0.000 claims description 4
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 claims description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 4
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 4
- XWGJFPHUCFXLBL-UHFFFAOYSA-M rongalite Chemical compound [Na+].OCS([O-])=O XWGJFPHUCFXLBL-UHFFFAOYSA-M 0.000 claims description 4
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 4
- CWERGRDVMFNCDR-UHFFFAOYSA-N thioglycolic acid Chemical compound OC(=O)CS CWERGRDVMFNCDR-UHFFFAOYSA-N 0.000 claims description 4
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 238000004945 emulsification Methods 0.000 claims description 3
- 230000001804 emulsifying effect Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 230000000977 initiatory effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000037452 priming Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 claims description 2
- VJWGHGJYLCJIEK-UHFFFAOYSA-N 1,4-bis(6-methylheptoxy)-1,4-dioxobutane-2-sulfonic acid Chemical compound CC(C)CCCCCOC(=O)CC(S(O)(=O)=O)C(=O)OCCCCCC(C)C VJWGHGJYLCJIEK-UHFFFAOYSA-N 0.000 claims description 2
- YAJYJWXEWKRTPO-UHFFFAOYSA-N 2,3,3,4,4,5-hexamethylhexane-2-thiol Chemical compound CC(C)C(C)(C)C(C)(C)C(C)(C)S YAJYJWXEWKRTPO-UHFFFAOYSA-N 0.000 claims description 2
- IBDVWXAVKPRHCU-UHFFFAOYSA-N 2-(2-methylprop-2-enoyloxy)ethyl 3-oxobutanoate Chemical compound CC(=O)CC(=O)OCCOC(=O)C(C)=C IBDVWXAVKPRHCU-UHFFFAOYSA-N 0.000 claims description 2
- GNSFRPWPOGYVLO-UHFFFAOYSA-N 3-hydroxypropyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCO GNSFRPWPOGYVLO-UHFFFAOYSA-N 0.000 claims description 2
- QZPSOSOOLFHYRR-UHFFFAOYSA-N 3-hydroxypropyl prop-2-enoate Chemical compound OCCCOC(=O)C=C QZPSOSOOLFHYRR-UHFFFAOYSA-N 0.000 claims description 2
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 2
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 claims description 2
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 2
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 2
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 claims description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 2
- 235000012538 ammonium bicarbonate Nutrition 0.000 claims description 2
- 235000012501 ammonium carbonate Nutrition 0.000 claims description 2
- JMGZBMRVDHKMKB-UHFFFAOYSA-L disodium;2-sulfobutanedioate Chemical compound [Na+].[Na+].OS(=O)(=O)C(C([O-])=O)CC([O-])=O JMGZBMRVDHKMKB-UHFFFAOYSA-L 0.000 claims description 2
- MTKBLDWVUKWLHT-UHFFFAOYSA-L disodium;dodecyl-dioxido-oxo-$l^{5}-phosphane Chemical compound [Na+].[Na+].CCCCCCCCCCCCP([O-])([O-])=O MTKBLDWVUKWLHT-UHFFFAOYSA-L 0.000 claims description 2
- KBQXYXLZUWULEL-UHFFFAOYSA-L disodium;octyl-dioxido-oxo-$l^{5}-phosphane Chemical compound [Na+].[Na+].CCCCCCCCP([O-])([O-])=O KBQXYXLZUWULEL-UHFFFAOYSA-L 0.000 claims description 2
- GMSCBRSQMRDRCD-UHFFFAOYSA-N dodecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCOC(=O)C(C)=C GMSCBRSQMRDRCD-UHFFFAOYSA-N 0.000 claims description 2
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 2
- SWRGUMCEJHQWEE-UHFFFAOYSA-N ethanedihydrazide Chemical compound NNC(=O)C(=O)NN SWRGUMCEJHQWEE-UHFFFAOYSA-N 0.000 claims description 2
- NLVXSWCKKBEXTG-UHFFFAOYSA-M ethenesulfonate Chemical compound [O-]S(=O)(=O)C=C NLVXSWCKKBEXTG-UHFFFAOYSA-M 0.000 claims description 2
- DNJIEGIFACGWOD-UHFFFAOYSA-N ethyl mercaptane Natural products CCS DNJIEGIFACGWOD-UHFFFAOYSA-N 0.000 claims description 2
- 239000011790 ferrous sulphate Substances 0.000 claims description 2
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 2
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 2
- PBOSTUDLECTMNL-UHFFFAOYSA-N lauryl acrylate Chemical compound CCCCCCCCCCCCOC(=O)C=C PBOSTUDLECTMNL-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 2
- 239000011736 potassium bicarbonate Substances 0.000 claims description 2
- 235000015497 potassium bicarbonate Nutrition 0.000 claims description 2
- 229910000028 potassium bicarbonate Inorganic materials 0.000 claims description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 2
- 235000011181 potassium carbonates Nutrition 0.000 claims description 2
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 239000001632 sodium acetate Substances 0.000 claims description 2
- 235000017281 sodium acetate Nutrition 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 0.000 claims description 2
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 2
- 235000010352 sodium erythorbate Nutrition 0.000 claims description 2
- 239000004320 sodium erythorbate Substances 0.000 claims description 2
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 claims description 2
- RBWSWDPRDBEWCR-RKJRWTFHSA-N sodium;(2r)-2-[(2r)-3,4-dihydroxy-5-oxo-2h-furan-2-yl]-2-hydroxyethanolate Chemical compound [Na+].[O-]C[C@@H](O)[C@H]1OC(=O)C(O)=C1O RBWSWDPRDBEWCR-RKJRWTFHSA-N 0.000 claims description 2
- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims 2
- 229910021529 ammonia Inorganic materials 0.000 claims 1
- 239000003607 modifier Substances 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 8
- 230000001070 adhesive effect Effects 0.000 abstract description 6
- 238000003860 storage Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003292 glue Substances 0.000 description 8
- 230000006872 improvement Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000002313 adhesive film Substances 0.000 description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 238000007774 anilox coating Methods 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000007761 roller coating Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 101100321447 Arabidopsis thaliana ZHD4 gene Proteins 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910018557 Si O Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000012874 anionic emulsifier Substances 0.000 description 1
- 230000000181 anti-adherent effect Effects 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 125000004029 hydroxymethyl group Chemical group [H]OC([H])([H])* 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J143/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Adhesives based on derivatives of such polymers
- C09J143/04—Homopolymers or copolymers of monomers containing silicon
-
- 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
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
- C08F2/26—Emulsion polymerisation with the aid of emulsifying agents anionic
-
- 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
- C08F220/1808—C8-(meth)acrylate, e.g. isooctyl (meth)acrylate or 2-ethylhexyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/241—Polyolefin, e.g.rubber
- C09J7/243—Ethylene or propylene polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
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Abstract
本发明公开了一种BOPP薄膜标签用丙烯酸酯乳胶压敏胶及其制备方法,包括下述重量份的原料:40.0~55.0份软单体;3.0~10.0份硬单体;1.0~5.0份功能性单体;0.02~0.1份分子量调节剂;0.5~3.0份乳化剂;0.02~0.1份缓冲剂;0.2~0.6份热引发剂;0.03~0.2份氧化剂;0.03~0.2份还原剂;0.3~1.0份pH调节剂;0.3~1.0份润湿剂;40.0~50.0份去离子水。本发明的BOPP薄膜标签用丙烯酸酯乳胶压敏胶,具备下述有益效果:具备制备工艺简单,贮存稳定,综合力学性能良好,抗溢胶性能好,短时可重贴无残胶以及耐水汽性优异。
Description
技术领域
本发明涉及压敏胶技术领域,具体涉及一种BOPP薄膜标签用丙烯酸酯乳胶压敏胶及其制备方法。
背景技术
由于BOPP(双向拉伸聚丙烯)薄膜具有质轻、强度高、印刷性能优良、尺寸稳定、耐水、抗化学品性突出以及不易老化等优点。使得采用BOPP薄膜作为印刷承载物的不干胶标签产品在食品饮料、日化、医药等领域得到广泛应用,在不干胶标签市场中占有较大的比例,且份额仍在不断扩大。面对终端新的应用领域不断涌现、印刷厂家对提升模切排废效率的需求日益增加以及贴标厂家对提升不良品返工效率的需求日益增加,使得对BOPP薄膜标签用丙烯酸酯乳胶压敏胶的性能要求也不断提高。
目前,市场上的BOPP薄膜标签用丙烯酸酯乳胶压敏胶质量普遍在普通到中档水平之间,普遍存在高温溢胶(降低模切排废效率)、短时可重贴性差(降低贴标不良品返工效率)、有雾状的暗影以及耐水汽差(潮湿环境中易脱胶)等问题。导致高档产品主要以溶剂型丙烯酸酯压敏胶为主,但是从生产成本和环境保护方面考虑,水性丙烯酸酯乳胶压敏胶是今后的发展趋势。
现有技术中:
CN 105504148 A,公布了一种水性压敏胶及其制备方法,通过添加多羟甲基化合物,并使其在成膜时与聚合物侧链上的羟甲基或羧基进行交联,增加了水性压敏胶的交联效果,内聚强度高,抗溢胶性能好,抗残胶性能优异,但是由于外加交联剂存在活化期问题,调配好后的压敏胶使用周期短,涂布生产操作复杂,使用范围受到限制。
综上所述,亟需一种BOPP薄膜标签用丙烯酸酯乳胶压敏胶,该压敏胶不仅需要制备工艺简单、贮存稳定,还需要兼顾的性能为粘结力强、抗溢胶性能好、短时可重贴性优异以及耐水不脱胶。
发明内容
本发明的目的是提供一种BOPP薄膜标签用丙烯酸酯乳胶压敏胶及其制备方法。
上述方法制得的压敏胶能满足BOPP薄膜标签大部分应用场景,适用于网纹辊涂布设备使用。该压敏胶还具备制备工艺简单,贮存稳定,综合力学性能良好,抗溢胶性能好,短时可重贴无残胶以及耐水汽性优异的特点。
一种BOPP薄膜标签用丙烯酸酯乳胶压敏胶,
包括下述重量份的原料:
40.0~55.0份软单体;
3.0~10.0份硬单体;
1.0~5.0份功能性单体;
0.02~0.1份分子量调节剂;
0.5~3.0份乳化剂;
0.02~0.1份缓冲剂;
0.2~0.6份热引发剂;
0.03~0.2份氧化剂;
0.03~0.2份还原剂;
0.3~1.0份pH调节剂;
0.3~1.0份润湿剂;
40.0~50.0份去离子水。
作为本方案的进一步改进,所述软单体包括但不限于丙烯酸正丁酯、甲基丙烯酸正丁酯、丙烯酸异辛酯,甲基丙烯酸月桂酯和丙烯酸十二酯中的一种或多种。
作为本方案的进一步改进,所述硬单体包括但不限于甲基丙烯酸甲酯、丙烯酸甲酯、醋酸乙烯酯,苯乙烯和丙烯酸乙酯中的一种或多种。
作为本方案的进一步改进,所述功能性单体包括但不限于丙烯酸、甲基丙烯酸、丙烯酸羟乙酯、丙烯酸羟丙酯、甲基丙烯酸羟乙酯、甲基丙烯酸羟丙酯、N-羟甲基丙烯酰胺、乙酰乙酸基甲基丙烯酸乙酯、双丙酮丙烯酰胺、己二酸二酰肼、乙二酸二酰肼,乙烯基三甲氧基硅烷和γ-甲基丙烯酰氧基丙基三甲氧基硅烷中的一种或多种。
作为本方案的进一步改进,所述功能性单体为丙烯酸、丙烯酸羟乙酯、双丙酮丙烯酰胺,己二酸二酰肼和乙烯基三甲氧基硅烷中的一种或多种。
作为本方案的进一步改进,所述分子量调节剂包括但不限于正十二烷基硫醇、叔十二烷基硫醇,巯基乙醇和巯基乙酸中的一种或多种。
作为本方案的进一步改进,所述乳化剂包括但不限于十二烷基硫酸钠、十二烷基苯磺酸钠、烯丙氧基脂肪醇聚氧乙烯醚硫酸铵,乙烯基磺酸盐和磺基琥珀酸二异辛酯钠盐中的一种或多种。
作为本方案的进一步改进,
所述乳化剂为十二烷基硫酸钠和烯丙氧基脂肪醇聚氧乙烯醚硫酸铵组成的混合物,两者质量比在4:1~1:4之间;
所述缓冲剂包括但不限于碳酸氢钠、碳酸氢铵、碳酸钠、碳酸铵,碳酸氢钾和碳酸钾中的一种或多种;
所述热引发剂包括但不限于过硫酸钾,过硫酸铵和过硫酸钠中的一种或多种;
所述氧化剂包括但不限于叔丁基过氧化氢、过氧化氢、过硫酸钾,过硫酸铵和过硫酸钠中的一种或多种;
所述还原剂包括但不限于硫酸亚铁、亚硫酸氢钠,甲醛合次硫酸钠和异抗坏血酸钠中的一种或多种;
所述pH值调节剂包括但不限于氨水、氢氧化钠,三乙醇胺和醋酸钠中的一种或多种;
所述润湿剂包括但不限于磺基丁二酸二辛基钠盐、磺基琥珀酸二异辛酯钠,辛基膦酸钠和月桂基膦酸钠中的一种或多种。
一种BOPP薄膜标签用丙烯酸酯乳胶压敏胶的制备方法,包括以下制备步骤:
步骤A预乳化阶段
将全部的乳化剂、30~40%的去离子水、丙烯酸酯软单体、丙烯酸酯硬单体,80~100%的功能性单体和分子量调节剂依次加入到乳化釜中搅拌分散,制得预乳化液;
步骤B打底阶段
将45~55%的去离子水、缓冲剂加入反应釜中,升温至50~70℃,加入1~10%的预乳化液,制得釜底液;
步骤C种子引发阶段
将釜底液继续升温至78~85℃,在搅拌条件下,将溶于1~5%去离子水的10~40%热引发剂投入到釜底液中,反应时间20~60min,制得种子乳液;
步骤D聚合阶段
在搅拌条件下,将溶于1~5%去离子水的剩余热引发剂和剩余预乳化液匀速地滴加到种子乳液中,滴加时间控制在3~5h,滴加完保温1~2h;降温至60~75℃,将氧化剂和还原剂分别溶于1~5%的去离子水中,进行同步滴加,滴加时间控制在30~60min;
步骤E后添加阶段
将步骤D中的产物降温至40℃以下,添加pH调节剂至pH值为7.0~8.0;加入剩余的功能性单体,均匀分散后降至室温,加入润湿剂,分散完全后过滤制得丙烯酸酯乳胶压敏胶;
制得的丙烯酸酯乳胶压敏胶固含量为54~56%,粘度为80~250mPa.s。
作为本方案的进一步改进,所述步骤A~步骤E中,搅拌速度为150~500rpm。
与现有技术相比,本发明制得的BOPP薄膜标签用丙烯酸酯乳胶压敏胶具备下述有益效果:
(1)本发明采用非反应型乳化剂十二烷基硫酸钠和反应型乳化剂烯丙氧基脂肪醇聚氧乙烯醚硫酸铵作为阴离子乳化剂共同使用,一是非反应型乳化剂提供了良好的聚合稳定性;二是反应型乳化剂通过双键参与了自由基聚合反应,降低了乳化剂分子向胶膜界面的迁移能力,提高了丙烯酸酯乳胶的耐水汽性能,解决了制成保护中耐水汽不足造成的脱落现象。
(2)本发明采用的功能性单体,一是提供了含有羧基和羟基的极性基团,增强了与BOPP薄膜的结合力,降低了从被贴基材上剥离的残胶现象;二是通过酰肼自交联反应增加了聚合物链段的交联密度,提高了内聚强度,进一步增强了与BOPP薄膜的结合力,提升了短时可重贴性;三是在聚合物分子链段上引入有机硅分子,Si-O键的键能大于C-C键的键能,改善了胶膜的耐高温性能,避免高温模切出现溢胶现象。
(3)本发明制备过程中工艺简单,使用水而非有机溶剂做介质,低碳环保,节约成本。
(4)本发明的丙烯酸酯乳胶压敏胶贮存稳定,固含量高,粘度低,涂布速度快,适用于网纹辊涂布设备使用。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚,以下结合实施例1~7对本发明作进一步说明:
实施例1
一种BOPP薄膜标签用丙烯酸酯乳胶压敏胶,其组成原料以重量份计为:18.7份丙烯酸丁酯【软单体】、25.0份丙烯酸异辛酯【软单体】、5.1份甲基丙烯酸甲酯【硬单体】、0.5份丙烯酸【功能单体】、1.0份丙烯酸羟乙酯【功能单体】、0.6份双丙酮丙烯酰胺【功能单体】、0.3份己二酸二酰肼【功能单体】、0.3份乙烯基三甲氧基硅烷【功能单体】、0.05份正十二烷基硫醇、0.8份十二烷基硫酸钠【乳化剂】、1.2份烯丙氧基脂肪醇聚氧乙烯醚硫酸铵【乳化剂】、0.05份碳酸氢钠、0.3份过硫酸铵、0.1份叔丁基过氧化氢、0.1份甲醛合次硫酸钠、0.4份氨水,0.5份磺基丁二酸二辛基钠盐和45.0份去离子水。
一种BOPP薄膜标签用丙烯酸酯乳胶压敏胶的制备方法,包括以下制备步骤:
步骤A预乳化阶段
将0.8份十二烷基硫酸钠、1.2份烯丙氧基脂肪醇聚氧乙烯醚硫酸铵、15.0份去离子水、18.7份丙烯酸丁酯、25.0份丙烯酸异辛酯、5.1份甲基丙烯酸甲酯、0.5份丙烯酸、1.0份丙烯酸羟乙酯、0.6份双丙酮丙烯酰胺,0.3份乙烯基三甲氧基硅烷和0.05份正十二烷基硫醇依次加入到乳化釜中搅拌分散,制得预乳化液;
步骤B打底阶段
将25.0份去离子水、0.05份碳酸氢钠加入反应釜中,升温至50~70℃,加入3%的预乳化液,制得釜底液;
步骤C种子引发阶段
将釜底液继续升温至78~85℃,在搅拌条件下,将溶于1.0份去离子水的0.05份过硫酸铵投入到釜底液中,反应时间20~60min,制得种子乳液;
步骤D聚合阶段
在搅拌条件下,将溶于2.0份去离子水的0.25份过硫酸铵和剩余预乳化液匀速地滴加到种子乳液中,滴加时间控制在3~5h,滴加完保温1~2h;降温至60~75℃,将0.1份叔丁基过氧化氢和0.1份甲醛合次硫酸钠分别溶于1.0份的去离子水中,进行同步滴加,滴加时间控制在30~60min;
步骤E后添加阶段
将步骤D中的产物降温至40℃以下,添加0.4份氨水至pH值为7.0~8.0;加入0.3份己二酸二酰肼,均匀分散后降至室温,加入0.5份磺基丁二酸二辛基钠盐,分散完全后过滤制得丙烯酸酯乳胶压敏胶。
作为进一步的优选方案,所述步骤A~步骤E中,搅拌速度为150~500rpm。
实施例2
采用实施例1的步骤,但步骤A中,十二烷基硫酸钠用量改为0.4份、烯丙氧基脂肪醇聚氧乙烯醚硫酸铵用量改为1.6份。
实施例3
采用实施例1的步骤,但步骤A中,丙烯酸用量改为1.0份。
实施例4
采用实施例1的步骤,但步骤A中,丙烯酸羟乙酯用量改为1.5份。
实施例5
采用实施例1的步骤,但步骤A中,乙烯基三甲氧基硅烷用量改为0.5份。
实施例6
采用实施例1的步骤,但步骤A中,丙烯酸用量改为0.9份,丙烯酸羟乙酯用量改为0.6份。
实施例7
采用实施例1的步骤,但步骤A中,双丙酮丙烯酰胺用量改为1.0份;步骤E中,己二酸二酰肼用量改为0.5份。
对比例1
采用实施例1的步骤,但步骤A中,十二烷基硫酸钠用量改为2.0份,不含乳化剂烯丙氧基脂肪醇聚氧乙烯醚硫酸铵。
对比例2
采用实施例1的步骤,但步骤A中,丙烯酸用量改为0.2份,不含功能单体丙烯酸羟乙酯。
对比例3
采用实施例1的步骤,但步骤A中不含双丙酮丙烯酰胺;步骤E中,不含功能单体己二酸二酰肼。
对比例4
采用实施例1的步骤,但步骤A中不含功能单体乙烯基三甲氧基硅烷。
性能测试:
将实施例1~7和对比例1~4的试样涂布于61g/m2白格离型纸涂硅面,涂胶量按19.0±1g/m2进行涂布,放入80~90℃烘箱烘烤5min后取出,然后将胶膜转移至75um哑白BOPP薄膜面材电晕面,最后将面材带胶面贴合于61g/m2白格离型纸涂硅面,在标准环境下(温度23±2℃,湿度50±5%)平衡72h,待测试。
1.初粘力:按《环形初粘测试》FTM9测试。
2.剥离力:按《90°剥离力测试》FTM2测试。
3.持粘力:按《在标准面板上的持粘力测试》FTM8测试。
4.耐水汽性:将均匀涂有压敏胶的BOPP基材电晕面放入25℃的自来水中浸泡14天,观察脱胶情况。
5.短时重贴性:将均匀涂有压敏胶的BOPP基材电晕面贴覆于PET瓶48h,揭开观察残胶情况。
6.抗高温溢胶性:将涂有压敏胶的BOPP不干胶样卷(MD方向长度:200m;
CD方向长度:190mm)放入60℃高温条件下7天,然后取出模切,标签模切尺寸:2mm(MD方向)*3mm(CD方向),排废边宽度:1mm。
模切完后观察标签边缘溢胶情况。
表1.性能测试结果
由表1的数据可以看出,本发明所制备的BOPP薄膜标签用丙烯酸酯乳胶压敏胶,通过整体配方组分相互配合,结合功能性单体丙烯酸、丙烯酸羟乙酯、双丙酮丙烯酰胺、己二酸二酰肼,乙烯基三甲氧基硅烷,乳化剂烯丙氧基脂肪醇聚氧乙烯醚硫酸铵的使用,环形初粘力大于9N/25mm,剥离力大于7N/25mm,持粘力大于300h,具有良好的力学性能,内聚强度高,能够保证夏季高温模切不溢胶,模切排废效率高;在具有高表面能的PET材质上48h内不残胶,短时可重贴性优异;泡水14天不脱胶,耐水汽性优异,能够满足BOPP薄膜标签大部分应用场景。
由表1的数据可以看出,功能单体只加入丙烯酸、丙烯酸羟乙酯、双丙酮丙烯酰胺、己二酸二酰肼,乙烯基三甲氧基硅烷中的任意一种时,持粘力受到影响,耐水汽性以及短时重贴性受影响,会有脱胶和残胶现象,夏季高温模切发生溢胶。
以上所述仅为本发明的优选实施方式,并非因此限制本发明的专利范围,凡是利用本发明所作的等效变换,均在本发明的专利保护范围内。
Claims (10)
1.一种BOPP薄膜标签用丙烯酸酯乳胶压敏胶,其特征在于,
包括下述重量份的原料:
40.0~55.0份软单体;
3.0~10.0份硬单体;
1.0~5.0份功能性单体;
0.02~0.1份分子量调节剂;
0.5~3.0份乳化剂;
0.02~0.1份缓冲剂;
0.2~0.6份热引发剂;
0.03~0.2份氧化剂;
0.03~0.2份还原剂;
0.3~1.0份pH调节剂;
0.3~1.0份润湿剂;
40.0~50.0份去离子水。
2.根据权利要求1所述的BOPP薄膜标签用丙烯酸酯乳胶压敏胶,其特征在于,所述软单体包括但不限于丙烯酸正丁酯、甲基丙烯酸正丁酯、丙烯酸异辛酯、甲基丙烯酸月桂酯和丙烯酸十二酯中的一种或多种。
3.根据权利要求1所述的BOPP薄膜标签用丙烯酸酯乳胶压敏胶,其特征在于,所述硬单体包括但不限于甲基丙烯酸甲酯、丙烯酸甲酯、醋酸乙烯酯、苯乙烯和丙烯酸乙酯中的一种或多种。
4.根据权利要求1所述的BOPP薄膜标签用丙烯酸酯乳胶压敏胶,其特征在于,所述功能性单体包括但不限于丙烯酸、甲基丙烯酸、丙烯酸羟乙酯、丙烯酸羟丙酯、甲基丙烯酸羟乙酯、甲基丙烯酸羟丙酯、N-羟甲基丙烯酰胺、乙酰乙酸基甲基丙烯酸乙酯、双丙酮丙烯酰胺、己二酸二酰肼、乙二酸二酰肼,乙烯基三甲氧基硅烷和γ-甲基丙烯酰氧基丙基三甲氧基硅烷中的一种或多种。
5.根据权利要求4所述的BOPP薄膜标签用丙烯酸酯乳胶压敏胶,其特征在于,述功能性单体为丙烯酸、丙烯酸羟乙酯、双丙酮丙烯酰胺,己二酸二酰肼和乙烯基三甲氧基硅烷中的一种或多种。
6.根据权利要求1所述的BOPP薄膜标签用丙烯酸酯乳胶压敏胶,其特征在于,所述分子量调节剂包括但不限于正十二烷基硫醇、叔十二烷基硫醇、巯基乙醇和巯基乙酸中的一种或多种。
7.根据权利要求1所述的BOPP薄膜标签用丙烯酸酯乳胶压敏胶,其特征在于,所述乳化剂包括但不限于十二烷基硫酸钠、十二烷基苯磺酸钠、烯丙氧基脂肪醇聚氧乙烯醚硫酸铵、乙烯基磺酸盐和磺基琥珀酸二异辛酯钠盐中的一种或多种。
8.根据权利要求1所述的BOPP薄膜标签用丙烯酸酯乳胶压敏胶,其特征在于,
所述乳化剂为十二烷基硫酸钠和烯丙氧基脂肪醇聚氧乙烯醚硫酸铵组成的混合物,两者质量比在4:1~1:4之间;
所述缓冲剂包括但不限于碳酸氢钠、碳酸氢铵、碳酸钠、碳酸铵、碳酸氢钾和碳酸钾中的一种或多种;
所述热引发剂包括但不限于过硫酸钾、过硫酸铵和过硫酸钠中的一种或多种;
所述氧化剂包括但不限于叔丁基过氧化氢、过氧化氢、过硫酸钾、过硫酸铵和过硫酸钠中的一种或多种;
所述还原剂包括但不限于硫酸亚铁、亚硫酸氢钠、甲醛合次硫酸钠和异抗坏血酸钠中的一种或多种;
所述pH值调节剂包括但不限于氨水、氢氧化钠、三乙醇胺和醋酸钠中的一种或多种;
所述润湿剂包括但不限于磺基丁二酸二辛基钠盐、磺基琥珀酸二异辛酯钠、辛基膦酸钠和月桂基膦酸钠中的一种或多种。
9.一种权利要求1~8任一项所述的BOPP薄膜标签用丙烯酸酯乳胶压敏胶的制备方法,其特征在于,包括以下制备步骤:
步骤A预乳化阶段
将全部的乳化剂、30~40%的去离子水、丙烯酸酯软单体、丙烯酸酯硬单体、80~100%的功能性单体和分子量调节剂依次加入到乳化釜中搅拌分散,制得预乳化液;
步骤B打底阶段
将45~55%的去离子水、缓冲剂加入反应釜中,升温至50~70℃,加入1~10%的预乳化液,制得釜底液;
步骤C种子引发阶段
将釜底液继续升温至78~85℃,在搅拌条件下,将溶于1~5%去离子水的10~40%热引发剂投入到釜底液中,反应时间20~60min,制得种子乳液;
步骤D聚合阶段
在搅拌条件下,将溶于1~5%去离子水的剩余热引发剂和剩余预乳化液匀速地滴加到种子乳液中,滴加时间控制在3~5h,滴加完保温1~2h;降温至60~75℃,将氧化剂和还原剂分别溶于1~5%的去离子水中,进行同步滴加,滴加时间控制在30~60min;
步骤E后添加阶段
将步骤D中的产物降温至40℃以下,添加pH调节剂至pH值为7.0~8.0;加入剩余的功能性单体,均匀分散后降至室温,加入润湿剂,分散完全后过滤制得丙烯酸酯乳胶压敏胶;
制得的丙烯酸酯乳胶压敏胶固含量为54~56%,粘度为80~250mPa.s。
10.根据权利要求9所述的BOPP薄膜标签用丙烯酸酯乳胶压敏胶的制备方法,其特征在于,所述步骤A~步骤E中,搅拌速度为150~500rpm。
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