WO2003033544A1 - Copolymerisierbare photoinitiatoren füer uv-vernetzbare klebstoffe - Google Patents
Copolymerisierbare photoinitiatoren füer uv-vernetzbare klebstoffe Download PDFInfo
- Publication number
- WO2003033544A1 WO2003033544A1 PCT/EP2002/011109 EP0211109W WO03033544A1 WO 2003033544 A1 WO2003033544 A1 WO 2003033544A1 EP 0211109 W EP0211109 W EP 0211109W WO 03033544 A1 WO03033544 A1 WO 03033544A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compounds
- aceto
- benzophenone derivatives
- compound
- alkyl
- Prior art date
Links
- 230000001070 adhesive effect Effects 0.000 title claims description 11
- 239000000853 adhesive Substances 0.000 title claims description 10
- 150000001875 compounds Chemical class 0.000 claims abstract description 69
- 229920001577 copolymer Polymers 0.000 claims abstract description 56
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 claims abstract description 25
- 150000008366 benzophenones Chemical class 0.000 claims abstract description 20
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims abstract description 15
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000012943 hotmelt Substances 0.000 claims abstract description 8
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- -1 arylalkyl compound Chemical class 0.000 claims description 36
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 125000003545 alkoxy group Chemical group 0.000 claims description 15
- 150000002148 esters Chemical class 0.000 claims description 15
- 229910052736 halogen Inorganic materials 0.000 claims description 15
- 150000002367 halogens Chemical class 0.000 claims description 15
- 125000000217 alkyl group Chemical group 0.000 claims description 14
- 125000004432 carbon atom Chemical group C* 0.000 claims description 14
- 230000009477 glass transition Effects 0.000 claims description 12
- 125000003118 aryl group Chemical group 0.000 claims description 9
- 125000004043 oxo group Chemical group O=* 0.000 claims description 8
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 7
- 125000001424 substituent group Chemical group 0.000 claims description 7
- 125000001140 1,4-phenylene group Chemical group [H]C1=C([H])C([*:2])=C([H])C([H])=C1[*:1] 0.000 claims description 6
- 239000003960 organic solvent Substances 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 2
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 claims description 2
- 239000012965 benzophenone Substances 0.000 claims description 2
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
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- 229910052845 zircon Inorganic materials 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 5
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 38
- 239000000178 monomer Substances 0.000 description 32
- 238000006116 polymerization reaction Methods 0.000 description 30
- 239000000203 mixture Substances 0.000 description 25
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- 239000000243 solution Substances 0.000 description 18
- 239000012948 isocyanate Substances 0.000 description 14
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 13
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- 150000002513 isocyanates Chemical class 0.000 description 12
- 238000012360 testing method Methods 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000003999 initiator Substances 0.000 description 10
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
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- 239000007787 solid Substances 0.000 description 9
- 238000009835 boiling Methods 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 8
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 8
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- 238000000576 coating method Methods 0.000 description 7
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- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 6
- NPFYZDNDJHZQKY-UHFFFAOYSA-N 4-Hydroxybenzophenone Chemical compound C1=CC(O)=CC=C1C(=O)C1=CC=CC=C1 NPFYZDNDJHZQKY-UHFFFAOYSA-N 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
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- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 5
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- 238000000034 method Methods 0.000 description 5
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- FSWXOANXOQPCFF-UHFFFAOYSA-N 4'-aminopropiophenone Chemical compound CCC(=O)C1=CC=C(N)C=C1 FSWXOANXOQPCFF-UHFFFAOYSA-N 0.000 description 4
- TXFPEBPIARQUIG-UHFFFAOYSA-N 4'-hydroxyacetophenone Chemical compound CC(=O)C1=CC=C(O)C=C1 TXFPEBPIARQUIG-UHFFFAOYSA-N 0.000 description 4
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 4
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- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 4
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- 239000008199 coating composition Substances 0.000 description 4
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- 238000007720 emulsion polymerization reaction Methods 0.000 description 4
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
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- 150000001408 amides Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 1
- 239000012935 ammoniumperoxodisulfate Substances 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 125000002619 bicyclic group Chemical group 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 229950005228 bromoform Drugs 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 125000004106 butoxy group Chemical group [*]OC([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229940117949 captan Drugs 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 150000001718 carbodiimides Chemical class 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 150000004292 cyclic ethers Chemical class 0.000 description 1
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000000582 cycloheptyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- ARUKYTASOALXFG-UHFFFAOYSA-N cycloheptylcycloheptane Chemical compound C1CCCCCC1C1CCCCCC1 ARUKYTASOALXFG-UHFFFAOYSA-N 0.000 description 1
- WVIIMZNLDWSIRH-UHFFFAOYSA-N cyclohexylcyclohexane Chemical compound C1CCCCC1C1CCCCC1 WVIIMZNLDWSIRH-UHFFFAOYSA-N 0.000 description 1
- XXKOQQBKBHUATC-UHFFFAOYSA-N cyclohexylmethylcyclohexane Chemical compound C1CCCCC1CC1CCCCC1 XXKOQQBKBHUATC-UHFFFAOYSA-N 0.000 description 1
- 125000006547 cyclononyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
- WJTCGQSWYFHTAC-UHFFFAOYSA-N cyclooctane Chemical compound C1CCCCCCC1 WJTCGQSWYFHTAC-UHFFFAOYSA-N 0.000 description 1
- 239000004914 cyclooctane Substances 0.000 description 1
- 125000000640 cyclooctyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 description 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 description 1
- 125000001559 cyclopropyl group Chemical group [H]C1([H])C([H])([H])C1([H])* 0.000 description 1
- XJOBOFWTZOKMOH-UHFFFAOYSA-N decanoyl decaneperoxoate Chemical compound CCCCCCCCCC(=O)OOC(=O)CCCCCCCCC XJOBOFWTZOKMOH-UHFFFAOYSA-N 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 125000004386 diacrylate group Chemical group 0.000 description 1
- 239000012933 diacyl peroxide Substances 0.000 description 1
- 239000012973 diazabicyclooctane Substances 0.000 description 1
- JBSLOWBPDRZSMB-FPLPWBNLSA-N dibutyl (z)-but-2-enedioate Chemical compound CCCCOC(=O)\C=C/C(=O)OCCCC JBSLOWBPDRZSMB-FPLPWBNLSA-N 0.000 description 1
- 229940117389 dichlorobenzene Drugs 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 229940019778 diethylene glycol diethyl ether Drugs 0.000 description 1
- HRKQOINLCJTGBK-UHFFFAOYSA-N dihydroxidosulfur Chemical compound OSO HRKQOINLCJTGBK-UHFFFAOYSA-N 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- LDCRTTXIJACKKU-ARJAWSKDSA-N dimethyl maleate Chemical compound COC(=O)\C=C/C(=O)OC LDCRTTXIJACKKU-ARJAWSKDSA-N 0.000 description 1
- CZZYITDELCSZES-UHFFFAOYSA-N diphenylmethane Chemical compound C=1C=CC=CC=1CC1=CC=CC=C1 CZZYITDELCSZES-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- FFYWKOUKJFCBAM-UHFFFAOYSA-N ethenyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC=C FFYWKOUKJFCBAM-UHFFFAOYSA-N 0.000 description 1
- MEGHWIAOTJPCHQ-UHFFFAOYSA-N ethenyl butanoate Chemical compound CCCC(=O)OC=C MEGHWIAOTJPCHQ-UHFFFAOYSA-N 0.000 description 1
- GLVVKKSPKXTQRB-UHFFFAOYSA-N ethenyl dodecanoate Chemical compound CCCCCCCCCCCC(=O)OC=C GLVVKKSPKXTQRB-UHFFFAOYSA-N 0.000 description 1
- AFSIMBWBBOJPJG-UHFFFAOYSA-N ethenyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC=C AFSIMBWBBOJPJG-UHFFFAOYSA-N 0.000 description 1
- BLCTWBJQROOONQ-UHFFFAOYSA-N ethenyl prop-2-enoate Chemical compound C=COC(=O)C=C BLCTWBJQROOONQ-UHFFFAOYSA-N 0.000 description 1
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- PYGSKMBEVAICCR-UHFFFAOYSA-N hexa-1,5-diene Chemical group C=CCCC=C PYGSKMBEVAICCR-UHFFFAOYSA-N 0.000 description 1
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 229920006270 hydrocarbon resin Polymers 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 150000002432 hydroperoxides Chemical class 0.000 description 1
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 235000013847 iso-butane Nutrition 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 125000004491 isohexyl group Chemical group C(CCC(C)C)* 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- LDTLDBDUBGAEDT-UHFFFAOYSA-N methyl 3-sulfanylpropanoate Chemical compound COC(=O)CCS LDTLDBDUBGAEDT-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- UUORTJUPDJJXST-UHFFFAOYSA-N n-(2-hydroxyethyl)prop-2-enamide Chemical compound OCCNC(=O)C=C UUORTJUPDJJXST-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 229940094933 n-dodecane Drugs 0.000 description 1
- 125000003136 n-heptyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 229940078552 o-xylene Drugs 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- HXSACZWWBYWLIS-UHFFFAOYSA-N oxadiazine-4,5,6-trione Chemical compound O=C1ON=NC(=O)C1=O HXSACZWWBYWLIS-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000909 polytetrahydrofuran Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920001289 polyvinyl ether Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- FBCQUCJYYPMKRO-UHFFFAOYSA-N prop-2-enyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC=C FBCQUCJYYPMKRO-UHFFFAOYSA-N 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical class C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000646 scanning calorimetry Methods 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000001973 tert-pentyl group Chemical group [H]C([H])([H])C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- UWHCKJMYHZGTIT-UHFFFAOYSA-N tetraethylene glycol Chemical compound OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 1
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 description 1
- FOETTWZZVDEKIW-UHFFFAOYSA-N triisocyanatomethylbenzene Chemical compound O=C=NC(N=C=O)(N=C=O)C1=CC=CC=C1 FOETTWZZVDEKIW-UHFFFAOYSA-N 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- RSJKGSCJYJTIGS-UHFFFAOYSA-N undecane Chemical compound CCCCCCCCCCC RSJKGSCJYJTIGS-UHFFFAOYSA-N 0.000 description 1
- AVWRKZWQTYIKIY-UHFFFAOYSA-N urea-1-carboxylic acid Chemical compound NC(=O)NC(O)=O AVWRKZWQTYIKIY-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- NLVXSWCKKBEXTG-UHFFFAOYSA-N vinylsulfonic acid Chemical compound OS(=O)(=O)C=C NLVXSWCKKBEXTG-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- 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
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
- C08F2/50—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
Definitions
- the invention relates to radical copolymerizable aceto or benzophenone derivatives (hereinafter referred to as "copolymerizable photoinitiators”), obtainable by reacting
- the invention further relates to copolymers which contain the copolymerizable photoinitiators according to the invention and the use of the copolymers in UV-crosslinkable compositions, for example as an adhesive, in particular hotmelt PSA.
- UV-crosslinkable adhesives which contain photoinitiators in polymerized form are known, for example, from the documents DE-A 2411169 and EP-A 246848.
- Copolymerizable benzophenone or acetophenone derivatives are described, for example, in documents EP-A 346788 and EP-A 377199.
- Copolymerizable photoinitiators should be easy to prepare and easy to copolymerize and the copolymers containing photoinitiators should have good application properties when used, in particular high cohesion and adhesion when used as an adhesive.
- the object of the present invention was to provide new copolymerizable photoinitiators, copolymers which contain the photoinitiators according to the invention in copolymerized form and which, when used as an adhesive, have improved cohesion and adhesion.
- R 2 ( ⁇ + 1) -valent, optionally substituted linear or branched C ⁇ ⁇ to C ⁇ 2 alkyl group, preferably C 2 - to C ⁇ -alkyl, or optionally substituted C 3 - to C ⁇ cycloalkyl group, preferably C 5 - and C 6 Cycloalkyl group, or optionally substituted C ⁇ - to Cio-aryl group, preferably phenyl group,
- the structural element -R 2 (-Y) ⁇ can also be a
- PO stands for a -CH 2 -CH (CH 3 ) -0- or a -CH (CH 3 ) -CH 2 -0 group and k and 1 for numerical values from 0 to 15, often from 0 to 10 and often from 0 to 5, but k and 1 are not simultaneously 0. Frequently either k or 1 stands for a numerical value of 1, 2, 3 or 4 and often for a numerical value of 1.
- Formula (II) and (III) (E0) k is a block of k -CH 2 -CH 2 -0 groups
- the invention relates to radically copolymerizable aceto or benzophenone derivatives, obtainable by reacting
- the invention further relates to copolymers which contain the copolymerizable photoinitiators according to the invention and the use of the copolymers in UV-crosslinkable compositions, in particular hotmelt PSAs.
- Linear or branched C 1 -C 6 -alkyl is understood to mean linear or branched alkyl radicals having 1 to 6 carbon atoms, for example methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert. -Butyl, n-pentyl, iso-pentyl, tert-pentyl or n-hexyl, iso-hexyl, tert-hexyl.
- a ( ⁇ + 1) -binding, linear or branched C 1 to C 2 alkyl group is to be understood as meaning alkyl groups which are derived, for example, from methyl, ethyl, propyl, 2-methylpropyl, 2, 2-dimethylpropyl, n-butyl and its Isomers, n-pentyl and its isomers, n-hexyl and its isomers, n-heptyl and its isomers, n-octyl and its isomers, n-nonyl and its isomers, n-decyl and its isomers, n-undecyl and its isomers or derive n-dodecyl and its isomers.
- alkyl groups can also be substituted with further 1, 2 or 3 functional groups, such as, for example, with halogens, such as fluorine, chlorine or bromine, or alkoxy groups, such as the methoxy, ethoxy or butoxy groups; in these cases the binding force of the alkyl groups increases by the number of these substituents.
- halogens such as fluorine, chlorine or bromine
- alkoxy groups such as the methoxy, ethoxy or butoxy groups
- ( ⁇ + 1) -binding C 3 - to -C 2 cycloalkyl groups are to be understood as ( ⁇ + 1) -binding cycloalkyl groups which are derived, for example, from cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclononyl or cyclodecyl
- bicyclic compounds are also to be understood, which are derived from bicyclohexane, bicycloheptane, bicyclooctane, bicyclononane, bicyclodecane, bicycloundecane or bicyclododecane.
- cycloalkyl groups can also be substituted with further 1, 2 or 3 functional groups, such as, for example, with C 1 -C 6 -alkyl groups, halogens or alkoxy groups, in which case the binding force of the cycloalkyl groups increases by the number of these substituents.
- Cio-aryl groups are understood to mean ( ⁇ + 1) -binding aryl groups which differ from the phenyl or the
- aryl groups can also be substituted with further 1, 2 or 3 substituents, such as, for example, with C 1 -C 8 -alkyl groups, halogens, or alkoxy groups, in which case the binding force of the aryl groups increases by the number of these substituents.
- 1,3- and 1,4-phenylene, 1,3-, 1,4-, 1,5- and 2,6-naphthylene groups are often used in particular.
- ⁇ is a number from 1 to 5, for example 1, 2, 3, 4 or 5, but in particular 1.
- Compounds a) used are in particular: 2-hydroxyethyl acrylate and methacrylate, 2-hydroxy-2-methylethyl acrylate and methacrylate, 3-hydroxypropyl acrylate and methacrylate,
- 2-Hydroxyethyl acrylate and methacrylate, 3-hydroxypropyl acrylate and 4-hydroxybutyl acrylate and methacrylate are particularly preferred.
- the compounds b) with at least 2 isocyanate groups generally have the structure of the general formula (V)
- a linear or branched C 3 - to C 6 -alkane compound for example propane, 2-methylpropane, 2, 2-dimethylpropane, n-butane and its isomers, n-pentane and its isomers, n-hexane and its isomers, n -Heptane and its isomers, n-octane and its isomers, n-nonane and its isomers, n-decane and its isomers, n-undecane and its isomers, n-dodecane and its isomers, n-tridecane and its isomers, n- Tetradecane and its isomers, n-pentadecane and its isomers as well 5 n-hexadecane and its isomers, preferably a C ⁇ - to C 13 -AI- kanthetic, which is optionally substituted by 1, 2 or 3 halogens, oxo,
- ⁇ isocyanate groups
- Examples of compounds of the general structure (V) are the aliphatic, cycloaliphatic and aromatic isocyanates known from the prior art.
- Preferred di- or poly-isocyanates are 4, 4 '-diphenylmethane diisocyanate, the mixtures of monomeric diphenylmethane diisocyanates and oligomeric diphenylmethane diisocyanates (polymer MDI), tetramethylene diisocyanate, tetramethylene diisocyanate trimers, hexaethylene diisocyanate, hexamethylene, tri-ethylene diisocyanate diisocyanate diisocyanate diisocyanate 4'-methylenebis (cyclohexyl) diisocyanate, xylylene diisocyanate, tetramethylxylylene diisocyanate, 1,3- and 1,4-bis (isocyanato-methyl) cyclohexane, dodecyl diiso
- Di- or polyisocyanates with isocyanate groups of different reactivity such as 2,4-tolylene diisocyanate (2,4-TDI), 2,4'-diphenylmethane diisocyanate (2,4'-MDI), tri-isocyanatotoluene, isophorone diisocyanate (IPDI ), 2-butyl-2-ethylpentamethylene diisocyanate, 2-isocyanatopropylcyclohexyl isocyanate, 3 (4) -isocyanatomethyl-1-methylcyclohexyl isocyanate, 1,4-diiso- 6 cyanato-4-methylpentane, 2,4'-methylenebis (cyclohexyl) diisocyanate and 4-methylcyclohexane-1,3-diisocyanate (H-TDI).
- 2,4-tolylene diisocyanate (2,4-TDI)
- isocyanates are particularly preferred, the isocyanate groups of which are initially equally reactive, but in which a drop in reactivity in the second isocyanate group can be induced by first addition of an alcohol, thioalcohol or amine to an isocyanate group.
- isocyanates the isocyanate groups of which are coupled via a delocalized electron system, e.g. 1,3- and 1,4-phenylene diisocyanate, 1,5-naphthylene diisocyanate, diphenyl diisocyanate, tolidine diisocyanate or 2,6-tolylene diisocyanate.
- the compounds of the general formula (V) also include those di- and polyisocyanate compounds which are derived from the di- or polyisocyanates mentioned or their mixtures by linking using urethane, allophanate , Urea, biuret, uretdione, A id, isocyanurate, carbodiimide, uretonimine, oxadiazinetrione or iminoxadiazinedione structures.
- the compounds c) used according to the invention have, for example, a structure according to the general formula (VI)
- Ci to C 3 alkyl such as methyl, ethyl, n-propyl or iso-propyl, optionally substituted with 1, 2 or 3 halogens, C ⁇ to C 6 alkyl, ester or alkoxy groups, substituted C 6 to Cio Aryl, for example phenyl or naphthyl, and aralkyl with 6 to 10 carbon atoms in the aryl part and 1 to 6 carbon atoms in the alkyl part, for example benzyl, BC 6 to cio-arylene, such as 1,2-, 1,3 - and
- aceto or benzophenone derivatives according to the general formula (VI), for example 2-, 3- or 4-hydroxyacetophenone, 2-, 3- or 4-hydroxypropiophenone, 2-, 3- or 4- (2-hydroxyethoxy) acetophenone , 2-, 3- or 4-aminoacetophenone, 2-, 3- or 7
- 2-amino-4-methylbenzophenone, 2-amino-4'-methylbenzophenone, 2-amino-4'-chlorobenzophenone or 2-amino-5-chlorobenzophenone can be used.
- 2- or 4-hydroxyacetophenone, 2- or 4-hydroxypropiophenone, 2- or 4- (2-hydroxyethoxy) aceto-phenone, 2- or 4-aminoacetophenone, 2- or 4-aminopropiophenone, 2- or 4- Hydroxybenzophenone, 2- or 4- (2-hydroxyethoxy) benzophenone and 2- or 4-aminobenzophenone are used.
- the copolymerizable photoinitiators are usually prepared in such a way that at least one compound b), often with the use of an organic solvent, is placed in a reaction vessel under an inert gas atmosphere, preferably under nitrogen, and brought to the reaction temperature with stirring. Then at least one compound a) is added continuously or batchwise at the reaction temperature.
- the amount of compound a) depends on the number ⁇ of the groups reactive with isocyanate and is usually chosen such that the ratio of the number of moles of compound b) to the product of the number of moles of compound a) and the number ⁇ 0.8 1 to 1 to 0.8 or 0.9 to 1 to 1 to 0.9 or 0.95 to 1 to 1 to 0.95.
- the reaction time is generally measured so that compound a) is completely reacted with compound b).
- the isocyanate group content of the reaction mixture is therefore monitored during the reaction of compound a) and compound b), which is constant after the reaction of compound a).
- the determination of the isocyanate group content is familiar to the person skilled in the art and is usually carried out by adding an excess of amine based on isocyanate groups and back-titrating the unused amino groups with dilute hydrochloric acid in accordance with DIN 53 8th
- the aforementioned reaction is advantageously carried out in the presence of a catalyst which is used in amounts of from 0.0001 to 1% by weight, in particular from 0.001 to 0.1% by weight, in each case based on the amount of isocyanate compound b).
- a catalyst which is used in amounts of from 0.0001 to 1% by weight, in particular from 0.001 to 0.1% by weight, in each case based on the amount of isocyanate compound b).
- Organometallic compounds in particular tin, zinc, bismuth or zirconium organic compounds, are suitable as catalysts.
- Dibutyltin dilaurate is particularly preferably used.
- Strong bases preferably nitrogen-containing compounds, such as tributyla in, chinnuclidine, diazabicyclooctane, diazabicyclononane or diazabicycloundecane can also be used.
- Anhydrous organic solvent such as, for example, acetone, 2-butanone, ethyl acetate, butyl acetate, tetrahydrofuran, dioxane, benzene, toluene, xylene, ethylbenzene, chlorobenzene, dichlorobenzene, dirnethylforma id, dimethylacetamide or N-methylpyridone can be used as a suitable solvent.
- acetone, 2-butanone, tetrahydrofuran, ethyl acetate or chlorobenzene are used.
- the reaction temperature is usually 0 to 120 ° C, preferably 20 to 100 ° C and particularly preferably 25 to 90 ° C.
- the reaction takes place both at atmospheric pressure and at a pressure above atmospheric pressure, for example at a pressure of> 0.1 bar,> 0.5 bar,> 2 bar or> 5 bar.
- a pressure below atmospheric pressure for example at a pressure of> 0.1 bar,> 0.5 bar,> 2 bar or> 5 bar.
- the reaction can also take place at a pressure below atmospheric pressure.
- compound c) is added continuously or batchwise to the reaction mixture obtained from the aforementioned reaction of compounds a) and b) at reaction temperature.
- the amount of compound c) depends on the number of groups reactive with isocyanate and the number of free isocyanate groups of compound b). It is usually dimensioned in such a way that the isocyanate groups of compound b) are completely converted and these can no longer be detected by titration according to DIN 53 185. This is usually the case if the isocyanate content of the reaction mixture is ⁇ 0.1% by weight of isocyanate groups, corresponding to the detection limit of the titration.
- compound b) is preferably first reacted with compound a) and then with compound c).
- reaction mixtures obtained contain, as products, copolymerizable photoinitiators of the general formula (VII)
- R 1 , X, R 2 , ⁇ , Q, ⁇ , B and A have the meanings given in the formulas (I), (V) and (VI) and
- ⁇ for a number ⁇ > 0.8,> 0.9 or> 0.95 and ⁇ 1.05, ⁇ 1.11 or ⁇ 1.25 each divided by the value of ⁇ ,
- Preferred copolymerizable photoinitiators are compounds of the formula (VII) with
- R 1 is -H, X and Y 'is -0-, R 2 is ethylene, Q is 2,4-toluenyl, D' is -0-CH 2 CH 2 -0-, B is 1,4-phenylene and A is phenyl, ⁇ and ⁇ is 1 and ⁇ is 2, or
- R 1 is -H, X and Y 'and is -0-, R 2 is ethylene, Q is 3-methylene-3,5,5-trimethyl-l-cyclohexyl, D' is -0-CH 2 CH 2 - 0-, B is 1,4-phenylene and A is phenyl, ⁇ and ⁇ are 1 and ⁇ is 2, or
- R 1 is -H, X and Y 'and is -0-, R 2 is ethylene, Q is 1, 6-hexamethylene, D' is -0-CH 2 CH 2 -0-, B is 1,4-phenylene and A is phenyl, ⁇ and ⁇ is 1 and ⁇ is 2
- copolymerizable photoinitiators according to the invention are usually used for the copolymerization in the reaction mixture without further working up or separation of solvents. 10
- the copolymers according to the invention are obtained by polymerizing a mixture of ethylenically unsaturated monomers which the photoinitiators according to the invention usually have in a total amount of from 0.01 to 10% by weight, preferably from 0.05 to 5% by weight and particularly preferably from 0, 1 to 2 wt .-%, based on the total amount of monomers. Accordingly, the photoinitiators according to the invention are copolymerized in the copolymers in amounts of from 0.01 to 10% by weight, preferably from 0.05 to 5% by weight and particularly preferably from 0.1 to 2% by weight.
- the percentage amounts of the ethylenically unsaturated copolymerizable photoinitiators copolymerized in the copolymer and of the other monomers mentioned in the description should generally correspond to the amounts of these components in the monomer mixture to be polymerized and vice versa.
- the copolymers generally contain predominant proportions, mostly 50 to 99.99% by weight, preferably 70 to 97.5% by weight, of esters of ⁇ , ⁇ -mono preferably having 3 to 6 carbon atoms as main monomers - Ethylenically unsaturated mono- and dicarboxylic acids, such as, in particular, acrylic acid, methacrylic acid, maleic acid, fumaric acid and itaconic acid, with alkanols which generally have 1 to 12, preferably 1 to 8 and in particular 1 to 4, carbon atoms, such as, in particular, acrylic acid and methacrylic acid methyl -, -ethyl-, -n-butyl-, -iso-butyl and -2-ethylhexyl ester, dimethyl maleate or di-n-butyl maleate, copolymerized.
- esters of ⁇ , ⁇ -mono preferably having 3 to 6 carbon atoms as main monomers -
- Comonomers that can be used are, in particular, monomers that can be polymerized by free radicals, such as, for example, ethylene, vinylaromatic monomers, such as styrene, ⁇ -methylstyrene, o-chlorostyrene or vinyltoluenes, esters of vinyl alcohol and 1 to 18 carbon atoms
- Monocarboxylic acids such as vinyl acetate, vinyl propionate, vinyl n-butyrate, vinyl laurate and vinyl stearate, nitriles ⁇ , ⁇ -mono-ethylenically unsaturated carboxylic acids, such as acrylonitrile and C 4 _ 8 -conjugated dienes, such as 1,3-butadiene and isoprene.
- the copolymers particularly advantageously comprise, in addition to the abovementioned monomers, 0.1 to 15% by weight, preferably 0.5 to 8% by weight of ⁇ , ⁇ -monoethylenically unsaturated mono- and dicarboxylic acids having 3 to 6 carbon atoms, their amides and / or their anhydrides, such as in particular acrylic acid, methacrylic acid, maleic acid, fumaric acid and itaconic acid, acrylamide and methacrylamide, maleic anhydride, furthermore vinylsulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, styrene sulfonic acid and their water-soluble salts and N-vinylpyrrolidone , 11
- the copolymers may also contain other comonomers in copolymerized form, for example those which usually increase the internal strength of the films of the copolymers.
- These ethylenically unsaturated monomers normally have at least one epoxy, hydroxy, N-methylol or carbonyl group, or at least two non-conjugated ethylenically unsaturated double bonds.
- N-alkylolamides of ⁇ , ⁇ -monoethylenically unsaturated carboxylic acids having 3 to 10 carbon atoms among which the N-methylolacrylamide and the N-methylolmethacrylate are very particularly preferred and their esters having 1 to 4 carbon atoms alkanols.
- two monomers having vinyl residues, two monomers having vinylidene residues and two monomers having alkenyl residues are also possible.
- the di-esters of dihydric alcohols with ⁇ , ⁇ -monoethylenically unsaturated monocarboxylic acids are particularly advantageous, among which acrylic and methacrylic acid are preferred.
- alkylene glycol diacrylates and dimethacrylates such as ethylene glycol diacrylate, 1,2-propylene glycol diacrylate, 1,3-propylene glycol diacrylate, 1,3-butylene glycol diacrylate and 1, 4-glycolate diacrylate, 1,4, -Propylene glycol dimethacrylate, 1, 3-propylene glycol dimethacrylate, 1, 3-butylene glycol dimethacrylate, 1, 4-butylene glycol dimethacrylate as well as divinylbenzene, vinyl methacrylate, vinyl acrylate, allyl methacrylate, allyla acrylate, diallyl malacrylate, cycloplyl acrylate, diallyl acrylate, diallyl acrylate, diallyl acrylate
- methacrylic acid and acrylic acid-C 8 -C 8 -hydroxyalkyl esters such as n-hydroxyethyl esters
- the manner in which the monomeric components are added to the polymerization vessel in the course of the radical polymerization is known to the person skilled in the art. These can either be completely introduced into the polymerization vessel or, depending on their consumption, can be added continuously or in stages in the course of the radical polymerization. In particular, this depends on the chemical nature of the initiator system as well as on the polymerization temperature. A small part of the monomeric components is preferably introduced and the remainder is fed into the polymerization zone in accordance with the consumption. Of course, it is also possible that 12 during the polymerization, the composition of the monomer mixture to be polymerized is changed. These process variants are known to the person skilled in the art.
- a monomer mixture 1 and then a monomer mixture 2 with a different monomer composition can first be fed to the polymerization vessel in accordance with the consumption, while in the so-called gradient procedure the composition of the monomer mixture fed to the polymerization vessel is continuously changed.
- the polymerization is often carried out under an inert gas atmosphere, for example under nitrogen or argon.
- the copolymers according to the invention usually have K values from 10 to 150 and often from 15 to 100.
- the K values are usually determined at 25 ° C. according to DIN ISO 1628-1 with a 1% strength by weight solution of the copolymers in tetrahydrofuran ,
- the K value is preferably 25 to 55 if the copolymers are to be used as hotmelt PSAs.
- the copolymers are to be used in UV-curable compositions for coating mineral surfaces, their K values are preferably from 60 to 100.
- Copolymers which are to be used for paints preferably have K values from 15 to 85.
- the copolymers according to the invention can have glass transition temperatures of -70 to +150 ° C. Depending on the intended use, copolymers are often required whose glass transition temperatures are within certain ranges.
- suitable selection of the ethylenically unsaturated monomers to be polymerized it is possible for the person skilled in the art to specifically produce copolymers whose glass transition temperatures are in the desired range.
- the composition of the monomer mixture to be polymerized is selected such that the copolymers produced have glass transition temperatures ⁇ 0 ° C., often ⁇ +5 ° C. and often ⁇ +10 ° C.
- the composition of the monomer mixture to be polymerized is selected so that the copolymers produced have glass transition temperatures of -40 to +150 ° C, often from 0 to +100 ° C and often from + 20 to +80 ° C.
- the limit value of the glass transition temperature is meant which, according to G. Kanig (Colloid Journal & Journal for Polymers, Vol. 190, page 1, equation 1), strives with increasing molecular weight.
- the glass transition temperature is determined using the DSC method (diff 13 rential scanning calorimetry, 20 K / min, midpoint measurement, DIN 53 765).
- x 1 , x 2 , .... x n are the mass fractions of the monomers 1, 2, .... n and T g 1 , T g 2 , .... T g 11 the glass transition temperatures of only one of the Monomers 1, 2, .... n built up polymers in degrees Kelvin.
- the T g values for the homopolymers of most monomers are known and are listed, for example, in Ullmann's Ecyclopedia of Industrial Chemistry, Vol. 5, Vol. A21, page 169, VCH Weinheim, 1992; further sources of glass transition temperatures of homopolymers are, for example, J. Brandrup, EH 0 Immergut, Polymer Handbook, l st Ed., J. Wiley, New York 1966, 2 nd Ed. J. Wiley, New York 1975, and 3 rd Ed. J. Wiley, New York 1989).
- the new copolymers can be prepared by copolymerizing the monomeric components using the customary polymerization initiators and, if appropriate, regulators, polymerizing at bulk temperatures, in bulk, in emulsion, for example in water or in suitable organic media, or in solution.
- the new copolymers are preferably obtained by polymerizing the monomeric components in organic solvents, in particular in solvents with a boiling range from 50 to 150 ° C., preferably 60 to 120 ° C., using the usual amount of polymerization initiators, which are generally from 0.01 to 10% by weight, in particular 0.1 to 4% by weight, in each case based on the total weight of the monomeric components.
- Suitable organic solvents are, in particular, alcohols, such as methanol, ethanol, n- and iso-propanol, n- and iso-butane ⁇ l, cyclic ethers, such as, for example, tetrahydrofuran, and hydrocarbons, such as toluene and petrol, in a boiling range from 60 to 120 ° C.
- ketones such as acetone, methyl ethyl ketone and esters such as ethyl acetate and mixtures of solvents of the type mentioned can be used, mixtures which contain iso-butanol and / or methyl ethyl ketone in amounts> 70% by weight, particularly> 80% by weight. -% and in particular> 90 wt .-%, based on the solvent mixture used, are preferred. 14
- the manner in which the solvent or solvent mixture is added to the polymerization vessel in the course of the radical polymerization is known to the person skilled in the art. It can either be completely introduced into the polymerization vessel or used continuously or in stages in the course of the radical polymerization.
- the solvent can also be used in a mixture with the monomers and / or the initiator. A large part of the solvent is preferably initially introduced and the remainder is fed to the polymerization zone together with the monomers and / or initiators to be polymerized.
- Polymerization initiators used in solution polymerization include, for example, azo compounds such as 2, 2'-azobisisobutyronitrile, 2, 2'-azobis-2-methylbutyronitrile, diacyl peroxides, such as dibenzoyl peroxide, dilauroyl peroxide, didecanoyl peroxide and diisononanoyyl peroxide, such as tertiary, nano-peroyl peroxide , -Butylper-2-ethylhexanoate, tert. -Butylper aleinat, tert.
- azo compounds such as 2, 2'-azobisisobutyronitrile, 2, 2'-azobis-2-methylbutyronitrile
- diacyl peroxides such as dibenzoyl peroxide, dilauroyl peroxide, didecanoyl peroxide and diisononanoyyl peroxide, such as tertiary, nano-
- the usual initiators, such as sodium, potassium and ammonium peroxodisulfate, or else redox systems known to the person skilled in the art can be used in aqueous emulsion polymerization.
- the manner in which the initiator is added to the polymerization vessel in the course of the radical polymerization is known to the person skilled in the art. It can either be completely introduced into the polymerization vessel or used continuously or in stages in the course of the radical polymerization, depending on its consumption. In particular, this depends on the chemical nature of the initiator system as well as on the polymerization temperature. A small part is preferably introduced and the rest is fed to the polymerization zone in accordance with the consumption.
- the polymerization reaction is carried out in such a way that first ⁇ 50% by weight, often ⁇ 45% by weight or ⁇ 40% by weight of the initiator continuously over a longer period of time and then> 50% by weight %, often> 55% by weight or> 60% by weight of the initiator are fed continuously to the polymerization vessel over a shorter period of time.
- the polymerization can be carried out in a conventional manner in a polymerization apparatus which is generally provided with a stirrer, a plurality of feed vessels or lines, reflux coolers and heating and cooling devices and for working under an inert gas atmosphere and pressures above or below atmospheric pressure is equipped.
- the solvents can be separated off, if appropriate under reduced pressure, working at elevated temperatures of up to 150 ° C.
- the new copolymers can then be in a low-solvent or solvent-free state, i.e. as melts, as adhesives, preferably pressure sensitive adhesives and in particular hot melt pressure sensitive adhesives or as UV-curable binders in coating formulations, such as, for example, coating agents for coating mineral surfaces or as lacquers.
- the copolymer solutions usually contain 1 to 900 parts by weight, preferably 10 to 100 parts Parts by weight and particularly preferably 20 to 40 parts by weight of solvent per 100 parts by weight of copolymer.
- the copolymer solutions obtainable from solution polymerization can be used directly for these purposes, or can be prepared from them in a simple manner by dilution or concentration.
- customary regulators can also be used in the customary amounts, for example in amounts of 0.1 to 10 parts by weight or 0.5 to 5 parts by weight per 100 parts by weight of the monomers used for the polymerization are also used.
- Such regulators are used for regulating the molecular weight of the copolymers and are known to the person skilled in the art.
- Mercapto compounds such as 2-mercaptoethanol, 3-mercaptopropionic acid methyl ester, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropylmethyl dimethoxysilane, 3-mercaptopropionic acid, n- or tert.
- the polymerization usually takes place in the presence of dispersants.
- dispersants Protective colloids and / or emulsifiers known to those skilled in the art, for example nonionic and anionic or cationic emulsifiers, can be used as dispersants. Nonionic and anionic emulsifiers are preferably used.
- the amount of dispersant usually makes up up to 30 parts by weight, preferably 0.5 to 10 parts by weight and particularly preferably 1 to 6 parts by weight, based on 100 parts by weight of the monomers to be polymerized.
- Photoinitiators have improved hydrolysis stability over water or other protic organic solvents, such as iso-propanol or iso-butanol.
- the new copolymers When using the new copolymers, they can be modified and / or packaged in a conventional manner and used, for example, as hot-melt pressure sensitive adhesives.
- conventional tackifying resins for example hydrocarbon resins, modified natural or chemically modified colophony resins, which predominantly consist of abietic acid or abietic acid derivatives, coumarone-indene resins, terpenophenol resins, aldehyde resins or homopolymers, such as poly-2 ethyl hexyl acrylate or poly- ⁇ -methyl styrene, also plasticizers, for example based on mono-, di- or polyester compounds, perchlorinated hydrocarbons or paraffin oils, dyes and pigments or stabilizers or rubber-elastic substances such as natural or synthetic rubber, polyvinyl ether and 17 also polybutadiene oils in amounts of 0.1 to 50 wt .-%, based on the total mass, are added.
- One or more olefinically unsaturated higher molecular weight compounds are also suitable for modification, such as polyesterols and polyetherols esterified with acrylic acid, such as the acrylates of tripropylene glycol, tetraethylene glycol or other polyethylene glycols.
- Diacrylates and dirnethacrylates of polytetrahydrofuran with molecular weights of mostly 250 to 2000 (number average) are also suitable.
- Such at least diolefinically unsaturated compounds can advantageously be used in amounts of 0.1 to 10 parts by weight, based on 100 parts by weight of the copolymer, diolefinically unsaturated compounds of this type having a molecular weight of at least 500 (Number average) are of particular interest.
- the new copolymers are particularly suitable as melts, solutions or in the form of aqueous dispersions for the production of coatings, coatings and impregnations, in particular pressure-sensitive adhesives, pressure-sensitive adhesive films and pressure-sensitive adhesive labels and embossing forceps films.
- the masses can be applied in a conventional manner by brushing, spraying, rolling, knife coating or pouring, if appropriate at elevated temperature - usually in the temperature range from 20 to 150 ° C. - onto customary substrates, for example paper, cardboard, wood, metals, such as aluminum , Plastic films such as soft PVC, polyethylene, polyamides, polyethylene glycol terephthalate and polypropylene are applied.
- solvents are used, these can be easily evaporated from the coatings, optionally at room temperature or slightly elevated temperatures, generally at temperatures of 20 to 150 ° C and preferably at 50 to 80 ° C, with radiant heaters or hot air circulating devices usually being used.
- the optionally dried or pre-dried applications can then be crosslinked by irradiation with UV light, which gives well-adhesive coatings which have high cohesion with good adhesion and excellent aging resistance.
- Irradiation with UV light normally does not require any inert gas conditions and can usually be done in air.
- the usual lamps for example low, medium or high pressure mercury vapor lamps, which can have outputs of 20 to 100 J / sec x cm 2 , can be used as UV lamps. Lamps with higher power generally enable faster networking. In some cases, 18 the radiation is removed by the IR portion of the lamps remaining solvent or water at the same time.
- the adhesive properties of flat substrates which have a pressure-sensitive adhesive layer can be determined by measuring the shear strength as a measure of the cohesion and the peel strength as a measure of the surface tack.
- the hot reaction mixture was discharged from the autoclave, neutralized with 5% strength by weight aqueous hydrochloric acid, poured onto 2 l of ice water and the reaction product was brought to crystallization by constant stirring.
- the resulting solid was filtered off, washed with ice water and dried in vacuo (40 ° C, 10 mbar absolute).
- the filtrate obtained was concentrated to 20% of its volume on a rotary evaporator, the precipitated product was filtered off with suction, washed with ice water and likewise dried in vacuo.
- the overall yield was 82% of theory.
- 4- (4-Benzoylphenoxycarbonyloxy) -n-butyl acrylate was prepared according to the teaching of EP-A 377199.
- a 35% strength by weight solution of the comparative photoinitiator in o-xylene was used.
- nBA n-butyl acrylate
- MMA methyl methacrylate
- the solids content was generally determined by heating 1 to 2 g of the polymer obtained in an aluminum crucible with a diameter of approximately 3 cm at 140 ° C. and atmospheric pressure to constant weight. Two measurements were carried out in each case. The values given represent the mean values from these measurements. In all the following examples, solids contents of> 99.9% by weight were also determined. 21
- the K value of the copolymer was 50.5.
- the measurements were carried out at 25 ° C. with a 1% strength by weight solution of the copolymers in THF (in accordance with DIN ISO 1628-1).
- the comparative example was carried out analogously to Example 1, with the exception that the same amount of the comparative photoinitiator was used instead of the photoinitiator A.
- the measured K value was 50.5.
- Example 2 was carried out analogously to Example 1, with the exception that methyl ethyl ketone (MEK;> 99.0% by weight, Deutsche Shell Chemie GmbH) was used instead of IB. A K value of 51.8 was measured.
- MEK methyl ethyl ketone
- Example 3 was carried out analogously to Example 1, with the exception that the same amount of photoinitiator B was used instead of photoinitiator A.
- the measured K value was 48.0.
- Example 4 was carried out analogously to Example 1, with the exception that the same amount of photoinitiator C was used instead of photoinitiator A.
- the measured K value was 48.6.
- Example 5 was carried out analogously to Example 1, with the exception that 30.2 g of a 35% strength by weight solution of photoinitiator A in THF were used. The measured K value was 52.0.
- Example 6 was carried out analogously to Example 1, with the exception that 2, 2 '-azobis-2-methylbutyronitrile (Wako V59, WAKO Chemicals GmbH) was used instead of TBEH in feeds 2 and 3.
- the measured K value was 49.6. 22
- the polymerization was continued at 120 ° C. for one hour. The temperature was then reduced to 100 ° C.
- the K value was determined to be 50.5.
- Example 8 was carried out analogously to Example 7, with the exception that instead of IB MEK; was used. A K value of 48.8 was measured.
- Example 9 was carried out analogously to Example 7, with the exception that the same amount of photoinitiator B was used instead of photoinitiator A.
- the measured K value was 48.6.
- Example 10 was carried out analogously to Example 7, with the exception that the same amount of photoinitiator C was used instead of photoinitiator A.
- the measured K value was 48.6.
- Example 5 was carried out analogously to Example 7, with the exception that 24.6 g of a 35% strength by weight solution of photoinitiator A in THF were used. The measured K value was 50.2.
- Example 12 was carried out analogously to Example 7, with the exception that Wako V59 was used instead of TBEH in feeds 2 and 3. The measured K value was 48.5.
- Example 16 was produced analogously to example 15, with the exception that the following feeds were used:
- copolymers prepared in Examples 1 to 17 were tested for their pressure sensitive adhesive properties in terms of application technology. The procedure was as follows:
- the copolymer to be tested was examined without the addition of tackifiers.
- the copolymer was applied on a heated spreading table at 85 to 120 ° C. with a doctor knife in a thin layer on a commercially available polyester film (Hostaphan film RN 36) and then cooled to room temperature.
- the gap height of the doctor blade was chosen so that an application amount of 19 to 21 g / m 2 resulted for the copolymer.
- Irradiation was carried out using a CK emitter from IST-Strahltechnik Metz GmbH, which had an output of 75 mJ / sec x cm 2 .
- the coated film was placed on a running endless belt, so that the coated film ran under the lamp at a distance of 10 cm at a speed of 58 m / min.
- the radiation was carried out in air.
- the films thus produced were cut into strips 2.5 cm wide and 25 cm long.
- the respective test strip was glued to the edge of a stainless steel test sheet in such a way that a bond area of 12.5 ⁇ 12.5 mm 2 resulted.
- 10 minutes after the gluing a 1000 g weight was then attached to the protruding end of the film and the test plate was suspended vertically in a room with a constant temperature of 23 ° C. and a relative air humidity of 50%.
- the time until the bond breaks under the influence of the weight is a measure of the shear strength, which in turn is a measure of the cohesion. The longer the time period until the bond breaks, the greater this is.
- Three independent determinations were carried out for each polymer. The values given in Table 2 represent mean values from these three determinations.
- test strip was glued to a stainless steel test sheet at 23 ° C and 50% relative humidity.
- the strip was pulled off the test sheet at a angle of 180 ° at a speed of 300 mm per minute using a tensile testing machine.
- the force required for this is a measure of the adhesion. It is called peel strength and is given in Newtons per 2.5 cm (N / 2.5 cm). The higher the peel strength after the specified time, the higher the adhesion.
- Three independent determinations were carried out for each polymer. The values given in Table 2 represent mean values from these three determinations.
- Table 2 Summary of the shear strength and the peel strength of the copolymers obtained from Examples 1 to 17
- the hotmelt PSAs according to the invention in comparison to a PSA, have a non-improper photo 30 initiator was used, significantly higher shear strengths (cohesion).
- the peel strengths (adhesion) obtained after 24 hours are also greatly improved.
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Abstract
Description
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DE50209190T DE50209190D1 (de) | 2001-10-16 | 2002-10-04 | Copolymerisierbare photoinitiatoren füer uv-vernetzbare klebstoffe |
EP02781210A EP1438342B1 (de) | 2001-10-16 | 2002-10-04 | Copolymerisierbare photoinitiatoren füer uv-vernetzbare klebstoffe |
US10/492,353 US7304119B2 (en) | 2001-10-16 | 2002-10-04 | Copolymerizable photoinitiators for UV-crosslinkable adhesives |
US11/842,626 US7358319B2 (en) | 2001-10-16 | 2007-08-21 | Copolymerizable photoinitiators for UV-crosslinkable adhesives |
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DE10150486A DE10150486A1 (de) | 2001-10-16 | 2001-10-16 | Copolymerisierbare Photoinitiatoren für UV-vernetzbare Klebstoffe |
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- 2002-10-04 EP EP02781210A patent/EP1438342B1/de not_active Expired - Lifetime
- 2002-10-04 WO PCT/EP2002/011109 patent/WO2003033544A1/de active IP Right Grant
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005059151A2 (de) * | 2003-12-16 | 2005-06-30 | Basf Aktiengesellschaft | Enzymatische acrylierung von arylketonen |
WO2005059151A3 (de) * | 2003-12-16 | 2005-09-22 | Basf Ag | Enzymatische acrylierung von arylketonen |
US7745505B2 (en) | 2004-12-29 | 2010-06-29 | Henkel Ag & Co. Kgaa | Photoinitiators and UV-crosslinkable acrylic polymers for pressure sensitive adhesives |
DE102018222213A1 (de) | 2018-12-18 | 2020-06-18 | Beiersdorf Ag | Klebmasse zur Verklebung auf der Haut |
WO2020127356A1 (de) | 2018-12-18 | 2020-06-25 | Tesa Se | Klebmasse zur verklebung auf der haut |
Also Published As
Publication number | Publication date |
---|---|
US7358319B2 (en) | 2008-04-15 |
DE10150486A1 (de) | 2003-04-24 |
EP1438342B1 (de) | 2007-01-03 |
EP1438342A1 (de) | 2004-07-21 |
DE50209190D1 (de) | 2007-02-15 |
US20040249186A1 (en) | 2004-12-09 |
US7304119B2 (en) | 2007-12-04 |
ATE350405T1 (de) | 2007-01-15 |
US20070287854A1 (en) | 2007-12-13 |
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