EP3841138A1 - Trocknungsmittel für feuchtigkeitshärtende zusammensetzungen - Google Patents
Trocknungsmittel für feuchtigkeitshärtende zusammensetzungenInfo
- Publication number
- EP3841138A1 EP3841138A1 EP19752527.2A EP19752527A EP3841138A1 EP 3841138 A1 EP3841138 A1 EP 3841138A1 EP 19752527 A EP19752527 A EP 19752527A EP 3841138 A1 EP3841138 A1 EP 3841138A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nco
- moisture
- reactive
- polymer
- composition according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 209
- 239000002274 desiccant Substances 0.000 title claims abstract description 40
- 238000013008 moisture curing Methods 0.000 title claims description 89
- 229920000642 polymer Polymers 0.000 claims abstract description 95
- 125000005442 diisocyanate group Chemical group 0.000 claims abstract description 55
- 229920013730 reactive polymer Polymers 0.000 claims abstract description 40
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000000565 sealant Substances 0.000 claims abstract description 19
- 229910000077 silane Inorganic materials 0.000 claims abstract description 17
- 239000007795 chemical reaction product Substances 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 15
- 239000004839 Moisture curing adhesive Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 51
- 239000000945 filler Substances 0.000 claims description 35
- 239000003054 catalyst Substances 0.000 claims description 33
- 238000006243 chemical reaction Methods 0.000 claims description 24
- 239000004014 plasticizer Substances 0.000 claims description 23
- 238000004132 cross linking Methods 0.000 claims description 21
- 239000000853 adhesive Substances 0.000 claims description 20
- 230000001070 adhesive effect Effects 0.000 claims description 20
- 150000004756 silanes Chemical class 0.000 claims description 20
- 150000001875 compounds Chemical class 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 239000002318 adhesion promoter Substances 0.000 claims description 16
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 10
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 9
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 8
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 5
- 229940008841 1,6-hexamethylene diisocyanate Drugs 0.000 claims description 4
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Substances C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 4
- 125000004423 acyloxy group Chemical group 0.000 claims description 3
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 claims description 3
- VNMOIBZLSJDQEO-UHFFFAOYSA-N 1,10-diisocyanatodecane Chemical compound O=C=NCCCCCCCCCCN=C=O VNMOIBZLSJDQEO-UHFFFAOYSA-N 0.000 claims description 2
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 claims description 2
- AZYRZNIYJDKRHO-UHFFFAOYSA-N 1,3-bis(2-isocyanatopropan-2-yl)benzene Chemical compound O=C=NC(C)(C)C1=CC=CC(C(C)(C)N=C=O)=C1 AZYRZNIYJDKRHO-UHFFFAOYSA-N 0.000 claims description 2
- OHTRJOZKRSVAOX-UHFFFAOYSA-N 1,3-diisocyanato-2-methylcyclohexane Chemical compound CC1C(N=C=O)CCCC1N=C=O OHTRJOZKRSVAOX-UHFFFAOYSA-N 0.000 claims description 2
- MLXLDKWQJYBKOH-UHFFFAOYSA-N 1,3-diisocyanatoadamantane Chemical compound C1C(C2)CC3CC1(N=C=O)CC2(N=C=O)C3 MLXLDKWQJYBKOH-UHFFFAOYSA-N 0.000 claims description 2
- OHLKMGYGBHFODF-UHFFFAOYSA-N 1,4-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=C(CN=C=O)C=C1 OHLKMGYGBHFODF-UHFFFAOYSA-N 0.000 claims description 2
- ROHUXHMNZLHBSF-UHFFFAOYSA-N 1,4-bis(isocyanatomethyl)cyclohexane Chemical compound O=C=NCC1CCC(CN=C=O)CC1 ROHUXHMNZLHBSF-UHFFFAOYSA-N 0.000 claims description 2
- OVBFMUAFNIIQAL-UHFFFAOYSA-N 1,4-diisocyanatobutane Chemical compound O=C=NCCCCN=C=O OVBFMUAFNIIQAL-UHFFFAOYSA-N 0.000 claims description 2
- CDMDQYCEEKCBGR-UHFFFAOYSA-N 1,4-diisocyanatocyclohexane Chemical compound O=C=NC1CCC(N=C=O)CC1 CDMDQYCEEKCBGR-UHFFFAOYSA-N 0.000 claims description 2
- SBJCUZQNHOLYMD-UHFFFAOYSA-N 1,5-Naphthalene diisocyanate Chemical compound C1=CC=C2C(N=C=O)=CC=CC2=C1N=C=O SBJCUZQNHOLYMD-UHFFFAOYSA-N 0.000 claims description 2
- DFPJRUKWEPYFJT-UHFFFAOYSA-N 1,5-diisocyanatopentane Chemical compound O=C=NCCCCCN=C=O DFPJRUKWEPYFJT-UHFFFAOYSA-N 0.000 claims description 2
- WXIOQJUEBPUFHH-UHFFFAOYSA-N 1-isocyanato-4-(2-isocyanatopropan-2-yl)-1-methylcyclohexane Chemical compound O=C=NC(C)(C)C1CCC(C)(N=C=O)CC1 WXIOQJUEBPUFHH-UHFFFAOYSA-N 0.000 claims description 2
- MZEGJNMYXWIQFF-UHFFFAOYSA-N 2,5-diisocyanato-1,1,3-trimethylcyclohexane Chemical compound CC1CC(N=C=O)CC(C)(C)C1N=C=O MZEGJNMYXWIQFF-UHFFFAOYSA-N 0.000 claims description 2
- ZDKYYMRLZONTFK-UHFFFAOYSA-N 3,4-bis(isocyanatomethyl)bicyclo[2.2.1]heptane Chemical compound C1CC2(CN=C=O)C(CN=C=O)CC1C2 ZDKYYMRLZONTFK-UHFFFAOYSA-N 0.000 claims description 2
- MGYGFNQQGAQEON-UHFFFAOYSA-N 4-tolyl isocyanate Chemical compound CC1=CC=C(N=C=O)C=C1 MGYGFNQQGAQEON-UHFFFAOYSA-N 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- NRYUXUHIGUILJE-UHFFFAOYSA-N bis[4-(2-isocyanatopropan-2-yl)phenyl] carbonate Chemical compound C1=CC(C(C)(N=C=O)C)=CC=C1OC(=O)OC1=CC=C(C(C)(C)N=C=O)C=C1 NRYUXUHIGUILJE-UHFFFAOYSA-N 0.000 claims description 2
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 claims description 2
- KORSJDCBLAPZEQ-UHFFFAOYSA-N dicyclohexylmethane-4,4'-diisocyanate Chemical compound C1CC(N=C=O)CCC1CC1CCC(N=C=O)CC1 KORSJDCBLAPZEQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 125000006736 (C6-C20) aryl group Chemical group 0.000 claims 1
- 239000007822 coupling agent Substances 0.000 claims 1
- 239000005056 polyisocyanate Substances 0.000 claims 1
- 229920001228 polyisocyanate Polymers 0.000 claims 1
- 229920001002 functional polymer Polymers 0.000 description 37
- -1 polyoxypropylene Polymers 0.000 description 37
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical group [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 23
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 14
- 239000011230 binding agent Substances 0.000 description 13
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 12
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 11
- 239000003795 chemical substances by application Substances 0.000 description 11
- 238000002360 preparation method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 238000003860 storage Methods 0.000 description 11
- 229910052710 silicon Inorganic materials 0.000 description 10
- 229920001451 polypropylene glycol Polymers 0.000 description 9
- 230000003068 static effect Effects 0.000 description 9
- GQHTUMJGOHRCHB-UHFFFAOYSA-N 2,3,4,6,7,8,9,10-octahydropyrimido[1,2-a]azepine Chemical compound C1CCCCN2CCCN=C21 GQHTUMJGOHRCHB-UHFFFAOYSA-N 0.000 description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 229920000570 polyether Polymers 0.000 description 7
- 229920005862 polyol Polymers 0.000 description 7
- 150000003077 polyols Chemical class 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000010457 zeolite Substances 0.000 description 7
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 235000014113 dietary fatty acids Nutrition 0.000 description 6
- 239000000194 fatty acid Substances 0.000 description 6
- 229930195729 fatty acid Natural products 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 150000004702 methyl esters Chemical class 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 150000003672 ureas Chemical class 0.000 description 6
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical class [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 5
- 150000001343 alkyl silanes Chemical class 0.000 description 5
- 150000001412 amines Chemical class 0.000 description 5
- 150000002009 diols Chemical class 0.000 description 5
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 229910021485 fumed silica Inorganic materials 0.000 description 5
- 239000012948 isocyanate Substances 0.000 description 5
- 150000002513 isocyanates Chemical class 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 150000003505 terpenes Chemical class 0.000 description 5
- 235000007586 terpenes Nutrition 0.000 description 5
- 239000004721 Polyphenylene oxide Substances 0.000 description 4
- 235000019484 Rapeseed oil Nutrition 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 125000003277 amino group Chemical group 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- 239000004927 clay Substances 0.000 description 4
- 238000001723 curing Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 4
- ZYAASQNKCWTPKI-UHFFFAOYSA-N 3-[dimethoxy(methyl)silyl]propan-1-amine Chemical compound CO[Si](C)(OC)CCCN ZYAASQNKCWTPKI-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 3
- 239000006087 Silane Coupling Agent Substances 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 125000001931 aliphatic group Chemical group 0.000 description 3
- 125000003545 alkoxy group Chemical group 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- 150000001409 amidines Chemical class 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 238000006482 condensation reaction Methods 0.000 description 3
- 239000012975 dibutyltin dilaurate Substances 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 description 3
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- UDKSLGIUCGAZTK-UHFFFAOYSA-N phenyl pentadecane-1-sulfonate Chemical compound CCCCCCCCCCCCCCCS(=O)(=O)OC1=CC=CC=C1 UDKSLGIUCGAZTK-UHFFFAOYSA-N 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
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- 238000006116 polymerization reaction Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 3
- OLAQBFHDYFMSAJ-UHFFFAOYSA-L 1,2-bis(7-methyloctyl)cyclohexane-1,2-dicarboxylate Chemical compound CC(C)CCCCCCC1(C([O-])=O)CCCCC1(CCCCCCC(C)C)C([O-])=O OLAQBFHDYFMSAJ-UHFFFAOYSA-L 0.000 description 2
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 description 2
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- GRWFGVWFFZKLTI-IUCAKERBSA-N 1S,5S-(-)-alpha-Pinene Natural products CC1=CC[C@@H]2C(C)(C)[C@H]1C2 GRWFGVWFFZKLTI-IUCAKERBSA-N 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
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- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 2
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- LCKIEQZJEYYRIY-UHFFFAOYSA-N Titanium ion Chemical compound [Ti+4] LCKIEQZJEYYRIY-UHFFFAOYSA-N 0.000 description 2
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- OQFSQFPPLPISGP-UHFFFAOYSA-N beta-carboxyaspartic acid Natural products OC(=O)C(N)C(C(O)=O)C(O)=O OQFSQFPPLPISGP-UHFFFAOYSA-N 0.000 description 2
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- 239000000470 constituent Substances 0.000 description 2
- VSNLCLFPPHBFLV-LBPRGKRZSA-N diethyl (2s)-2-(3-trimethoxysilylpropylamino)butanedioate Chemical compound CCOC(=O)C[C@@H](C(=O)OCC)NCCC[Si](OC)(OC)OC VSNLCLFPPHBFLV-LBPRGKRZSA-N 0.000 description 2
- VSNLCLFPPHBFLV-UHFFFAOYSA-N diethyl 2-(3-trimethoxysilylpropylamino)butanedioate Chemical compound CCOC(=O)CC(C(=O)OCC)NCCC[Si](OC)(OC)OC VSNLCLFPPHBFLV-UHFFFAOYSA-N 0.000 description 2
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- 238000000227 grinding Methods 0.000 description 2
- 125000005842 heteroatom Chemical group 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 230000003301 hydrolyzing effect Effects 0.000 description 2
- 238000002329 infrared spectrum Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000001095 magnesium carbonate Substances 0.000 description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 2
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
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- 125000005375 organosiloxane group Chemical group 0.000 description 2
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
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- 125000005498 phthalate group Chemical class 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 229920000193 polymethacrylate Polymers 0.000 description 2
- 159000000001 potassium salts Chemical class 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
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- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 150000001283 organosilanols Chemical class 0.000 description 1
- 125000001181 organosilyl group Chemical group [SiH3]* 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000013500 performance material Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920005906 polyester polyol Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000010944 pre-mature reactiony Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- JTQPTNQXCUMDRK-UHFFFAOYSA-N propan-2-olate;titanium(2+) Chemical compound CC(C)O[Ti]OC(C)C JTQPTNQXCUMDRK-UHFFFAOYSA-N 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- GRWFGVWFFZKLTI-UHFFFAOYSA-N rac-alpha-Pinene Natural products CC1=CCC2C(C)(C)C1C2 GRWFGVWFFZKLTI-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000006254 rheological additive Substances 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical class OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- 150000004819 silanols Chemical class 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 235000015424 sodium Nutrition 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- TXDNPSYEJHXKMK-UHFFFAOYSA-N sulfanylsilane Chemical compound S[SiH3] TXDNPSYEJHXKMK-UHFFFAOYSA-N 0.000 description 1
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
- 150000003459 sulfonic acid esters Chemical class 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000013008 thixotropic agent Substances 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 1
- JABYJIQOLGWMQW-UHFFFAOYSA-N undec-4-ene Chemical compound CCCCCCC=CCCC JABYJIQOLGWMQW-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea group Chemical group NC(=O)N XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 235000020234 walnut Nutrition 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 239000002025 wood fiber 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
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/2805—Compounds having only one group containing active hydrogen
- C08G18/2815—Monohydroxy compounds
- C08G18/283—Compounds containing ether groups, e.g. oxyalkylated monohydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/22—Catalysts containing metal compounds
- C08G18/24—Catalysts containing metal compounds of tin
- C08G18/244—Catalysts containing metal compounds of tin tin salts of carboxylic acids
- C08G18/246—Catalysts containing metal compounds of tin tin salts of carboxylic acids containing also tin-carbon bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4866—Polyethers having a low unsaturation value
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/751—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
- C08G18/752—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
- C08G18/753—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group
- C08G18/755—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group and at least one isocyanate or isothiocyanate group linked to a secondary carbon atom of the cycloaliphatic ring, e.g. isophorone diisocyanate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
-
- 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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
- C09K3/1021—Polyurethanes or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2190/00—Compositions for sealing or packing joints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2200/00—Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2200/06—Macromolecular organic compounds, e.g. prepolymers
- C09K2200/0645—Macromolecular organic compounds, e.g. prepolymers obtained otherwise than by reactions involving carbon-to-carbon unsaturated bonds
- C09K2200/065—Polyurethanes
Definitions
- the invention relates to polymer compositions containing silane-functional polymers, a process for their preparation and their use as drying agents for moisture-curing compositions, in particular sealants, adhesives and coating materials.
- the invention also relates to moisture-curing compositions comprising these polymer compositions and processes for their preparation.
- silane-functional polymers Polymers which are modified with at least one silane group, but preferably two or more silane groups, are referred to as silane-functional polymers.
- Such silane groups are also known to the person skilled in the art as organoalkoxysilane or organoacyloxysilane.
- Silanes have the property of hydrolyzing to organ silanols on contact with moisture, that is to say forming groups with at least one silanol group (Si-OH group), and polymerizing to organosiloxanes by subsequent condensation.
- silane-functional polymers In the case of silane-functional polymers, this polymerization leads to a wide-meshed network for crosslinking the polymers. This process is also known as curing. Because of this ability for further crosslinking, silane-functional polymers are also referred to as prepolymers.
- Silane-functional polymers can be obtained, for example, by reacting isocyanate group-containing (NCO-containing) polymers with secondary aminosilanes. Such products are mentioned for example in EP 2 952 533 A1.
- the isocyanate groups are completely reacted with the amino groups of the aminosilanes to form urea groups, so that no free isocyanate groups remain.
- the polymers containing isocyanate groups are usually obtained by reacting diisocyanates with high molecular weight polyols. Diisocyanates are preferably reacted with diols.
- the molar ratio of NCO groups from the diisocyanates to the hydroxyl groups (OH groups) of the high molecular weight polyol determines the composition of the NCO-containing polymers.
- an NCO: OH ratio of 2: 1 is ideally selected so that, on statistical average, two diisocyanates always react with one diol and a product with exactly two free isocyanate groups is formed.
- Higher molecular weight polymers are obtained as by-products, which are formed by the reaction of two or more diols with more than two diisocyanates.
- a lower than 2: 1 ideal NCO: OH ratio favors the formation of higher molecular weight polymers, while a larger NCO: OH ratio results in a larger proportion of free diisocyanates in the product mixture.
- the former has the disadvantage that the viscosity of the uncrosslinked NCO-containing polymer and subsequently that of the silane-functional polymer produced from it Polymers increases, so that the latter is more difficult to process into a sealant or adhesive composition.
- such products have the disadvantage that any unreacted and therefore excess diisocyanate that is present has to be removed in a complex manner (for example by distillation). For this reason, NCO-containing polymers for producing silane-terminated polymers are usually produced with an NCO: OH ratio in the range from 1.5: 1 to 2.2: 1.
- EP 2 952 533 A1 discloses the production of silane-functional polymers by reacting polyoxypropylene diol with isophorone diisocyanate (IPDI) at an NCO: OH ratio of 2.1: 1 and then reacting the reaction product with (N- (3-triethoxysilyl -propyl) -amino-succinic acid diethyl ester or (N- (3-trimethoxysilyl-propyl) -amino-succinic acid diethyl ester (adduct of 3-aminopropyltrimethoxysilane with maleic acid diethyl ester).
- the NCO: OH The ratio is preferably set to a value from 1.5: 1 to 2.2: 1.
- silane-functional polymers are used, for example, as binders for moisture-curing sealants, adhesives and coating materials. Since they are free of isocyanate groups, unlike, for example, isocyanate prepolymers for the production of moisture-curing sealant and adhesive compositions, they can be combined with formulation components which carry isocyanate-reactive groups. Examples include polyols as plasticizer components and aminosilanes as adhesion promoters.
- moisture-curing sealants adhesives and coating materials based on silane-functional polymers
- drying agents are usually added to the moisture-curing composition. This is particularly necessary because, on the one hand, many of the commonly used components of moisture-curing sealant and adhesive compositions, e.g. Fillers, even water, and inevitably moisture is introduced into the moisture-curing composition. On the other hand, the moisture-curing composition must be protected against moisture penetrating from outside by leaking packaging or diffusion.
- Monomeric vinyl silanes such as vinyl trimethoxy silane or vinyl triethoxy silane, are used as drying agents, for example. These monomeric silanes react preferentially with the water contained in the composition and thus prevent the undesired premature reaction of this water with the silane groups of the binder.
- vinyl silanes are increasingly subject to mend stricter labeling requirements, which is why there is an interest in replacing these vinylsilene with other drying agents that do not require labeling and are less harmful to occupational hygiene.
- silane-functional polymers as binders in combination with drying agents is also disclosed, for example, in DE 10 2005 026 085 A1.
- This publication describes silane-modified urea derivatives and their use as rheology aids for sealants and adhesives.
- the urea derivatives are prepared by reacting a diisocyanate and an aminosilane in the presence of a silane-functional polymer.
- the disadvantage here is that the mixtures of binder and urea derivative obtained are highly viscous and can usually not be processed without further addition of plasticizers.
- water scavengers is necessary to increase the storage stability of the urea derivatives in the binder.
- Vinylsilanes are mentioned as exemplary water scavengers, in particular vinyltrimethoxysilane (VTMO). The above applies to a mixture of externally produced urea derivatives with silane-functional binders, which is also described.
- the present invention has for its object to provide new, less hygienic and easy to manufacture drying agents for moisture-curing compositions, in particular sealants, adhesives and coating materials, which are suitable for monomeric vinyl silanes such as vinyl trimethoxysilane (VTMO.) ) to replace.
- polymer compositions which contain silane-functional polymers which, by reacting an isocyanate-reactive (NCO-reactive) polymer with exactly one isocyanate-reactive group per molecule with a diisocyanate and after the subsequent reaction of the remaining isocyanate groups with an NCO-reactive Silane can be produced, the ratio of the amount of diisocyanate to the amount of NCO-reactive groups of the polymer being at least 1.25.
- NCO-reactive isocyanate-reactive
- the polymer compositions prepared in this way in addition to their function as binders, also take on the task of a drying agent can and thus make the use of conventional additional Licher drying agents, such as vinyl triethoxysilane or vinyl trimethoxysilane, unnecessary.
- the polymer compositions produced in this way have a lower viscosity than comparable polymers which are produced from the same components but with a lower ratio of diisocyanates to OH groups.
- the invention thus relates to a polymer composition which can be prepared by: a) reacting an NCO-reactive polymer with a molecular weight M n between 2,000 and 25,000 g / mol, which has exactly one NCO-reactive group per molecule, with a diisocyanate, the molar ratio the diisocyanate molecules to the NCO-reactive groups of the NCO-reactive polymer is at least 2: 1; and subsequently b) reaction of the remaining NCO groups in the reaction product from step a) with an NCO-reactive silane.
- the polymer composition according to the invention comprises silane-functional polymers which have proceeded from the reaction of an NCO-reactive polymer, which has exactly one NCO-reactive group, with a diisocyanate and the subsequent reaction with at least one NCO-reactive silane.
- the composition may include diurethanes that result from the reaction of two NCO-reactive polymers with a diisocyanate.
- the proportion of these diurethanes is relatively small compared to the silane-functional polymers produced according to the prior art, with the result that the composition as a whole has a relatively low viscosity.
- the composition also contains so-called free silane-functional reaction products which have resulted from the reaction of the diisocyanate (which did not react with the NCO-reactive polymer) with two NCO-reactive silanes.
- the molar ratios of these components in the composition according to the invention are essentially determined by the molar ratio of the diisocyanate to the NCO-reactive groups of the polymer in step a) in the case of otherwise identical starting materials.
- silane-functional reaction products contained in the polymer composition according to the invention react preferentially or at least as quickly as the terminal silane groups of the silane-functional polymers with water and thus act as drying agents.
- the silane-functional polymers contained in the polymer composition do not crosslink, or only crosslink to a minor extent, in the presence of small amounts of water, and therefore the polymer composition itself and the moisture-curing compositions which can be prepared therefrom are extremely stable in storage.
- the known hydrolysis / condensation reaction of the silane-functional polymers contained in the polymer composition with water which is intended to be used only after the application of the polymer composition or a formulation containing it (eg adhesive, sealant) would otherwise occur. timely and ultimately not as intended lead to an increase in the molecular weight and consequently to an increase in the viscosity of the polymer composition, which in turn complicates or even prevents the processing of such a formulation.
- the silane-functional polymers are crosslinked as intended and the composition is thus cured, as is desired, for example, when used as a moisture-curing sealant.
- the polymer composition according to the invention can thus be used as a combination of moisture-curing reactive thinner and drying agent for a moisture-curing composition, in particular a sealant or adhesive or a coating agent.
- the polymer composition according to the invention can thus be used as a combination of moisture-curing reactive thinner and drying agent for a moisture-curing composition, in particular a sealant or adhesive or a coating agent, if an additional moisture-curing binder with at least 2 silane groups per molecule is additionally added.
- the NCO-reactive polymer When the NCO-reactive polymer is reacted with the diisocyanate, all of the NCO-reactive groups of the NCO-reactive polymer are preferably reacted. Likewise, in the reaction of the reaction product from step a) with the NCO-reactive silane, preferably all free NCO groups of the reaction product from step a) are reacted.
- the polymer composition according to the invention preferably has a viscosity of less than 150 Pa s, preferably 2 to 70 Pa s, particularly preferably 5 to 50 Pa s, most preferably 5 to 30 Pa s, measured according to the specification of DIN EN ISO 3219 / B3.
- the molar ratio of diisocyanate to NCO-reactive groups of the NCO-reactive polymer here denotes the ratio of the amount of diisocyanate in mol to the total number of NCO-reactive groups of the NCO-reactive polymer in mol.
- the amount of diisocyanate results from the molecular weight of the diisocyanate and the mass of diisocyanate used.
- the total number of NCO-reactive groups of the NCO-reactive polymer in mol results from the mass of NCO-reactive polymer and the number of NCO-reactive groups based on the mass of the NCO-reactive polymer.
- the molar ratio of diisocyanate to NCO-reactive groups of the NCO-reactive polymer in step a) is preferably 2: 1 to 20: 1, particularly preferably 3: 1 to 15: 1, most preferably 4: 1 to 10: 1.
- Suitable NCO-reactive polymers have exactly one NCO-reactive group.
- An NCO-reactive group is understood to mean a functional group which enters into an addition reaction with an isocyanate group.
- Suitable NCO-reactive groups are, for example, hydroxyl, amino and mercapto groups. Mixtures of NCO-reactive polymers, each with different NCO-reactive groups, can also be used. NCO-reactive poly mers with different NCO-reactive groups can also be used.
- the NCO-reactive groups are preferably hydroxyl groups (OH groups).
- the molar amount of the NCO-reactive groups can be determined in accordance with DIN 53240-1 (2012).
- the amine number measured according to the specification DIN 53176: 2002-11
- the mass of the respective NCO-reactive polymer can be used.
- the molar amount of OH groups can be calculated from the mass of the NCO-reactive polymer and the hydroxyl number using known calculation methods. Unless otherwise stated, the hydroxyl number is determined in accordance with DIN 53240-1 (2012).
- the NCO-reactive polymer can also be reacted with a diisocyanate with a known NCO content up to a constant NCO content in a significant excess and the amount of unreacted NCO groups can be determined as described above.
- the molar amount of the remaining NCO-reactive groups in the reaction product of step (a) can then be determined from the difference between the molar amount of the NCO groups used and the unreacted NCO groups.
- the NCO-reactive polymer can be, for example, a polyacrylate, a polycarbonate, a polyester, polyurethane or a polyether which is functionalized with exactly one NCO-reactive group.
- Polyethers are particularly preferred as NCO-reactive polymers since, for example, in contrast to, for example, polyesters, they are not attacked or decomposed by water and bacteria.
- the NCO-reactive polymers to be used according to the invention preferably have a number average molecular weight of 2,000 to 25,000 g / mol, in particular 4,000 to 20,000 g / mol, preferably 5,000 to 18,000 g / mol, particularly preferably 6,000 to 10,000 g / mol. These molecular weights are particularly advantageous since the corresponding compositions have good compatibility with co-binders on the one hand and lead to relatively low-viscosity polymer compositions according to the invention on the other hand.
- the NCO-reactive polymer is preferably a monool.
- Suitable monomers for the preparation of the composition are in particular polyether monools, polyester monools and polycarbonate monools and mixtures of these monoesters, polyether monools being particularly preferred.
- Polytetramethylene monools, polyoxyethylene monools and polyoxypropylene monools, in particular polyoxypropylene monools, are particularly suitable. Mixtures of different monooies can also be used.
- the monooie to be used according to the invention preferably have a number average molecular weight of 2,000 to 25,000 g / mol, in particular 4,000 to 20,000 g / mol, preferably 5,000 to 18,000 g / mol, particularly preferably 6,000 to 10,000 g / mol. These molecular weights are particularly advantageous since the corresponding compositions have good compatibility with co-binders.
- Polyether monools which can be prepared by what is known as double metal cyanide catalysis (DMC catalysis) are particularly preferred. This is e.g. in US-A 5 158 922 (e.g. Example 30) and EP A 0 654 302 (page 5, line 26 to page 6, line 32). Monooies according to the invention are obtained, for example, by starting the synthesis of compounds having only one hydroxyl group. If you start the synthesis e.g. on diethylene glycol monobutyl ether in the presence of propylene oxide, polyoxypropylene monools are obtained. Another process for the production of monooie to be used according to the invention is described in EP 0 950 679, for example embodiment 15.
- DMC catalysis double metal cyanide catalysis
- the monooies to be used according to the invention preferably have an average OH functionality of 0.9 to 1.0, particularly preferably 0.95 to 1.0.
- the OH functionality of a connection is to be understood as the mean OH functionality. It gives the average number of hydroxyl groups per molecule.
- the average OH functionality of a compound can be calculated based on the number average molecular weight and the hydroxyl number. Unless otherwise stated, the hydroxyl number of a compound is determined according to the standard DIN 53240-1 (2012).
- polyoxyalkylene monools with a degree of unsaturation less than 0.02 mEq / g (determined according to the specification in ASTM D4671-16) and with a number-average molecular weight (determined by GPC) in the range from 2,000 to 25,000 g / mol, and polyoxyethylene monools , Polyoxypropylene monools with an average molecular weight of 2,000 to 25,000 g / mol.
- ethylene oxide-terminated (“EO-end-capped", ethylene oxide-end-capped) polyoxypropylene monols are also particularly suitable. The latter are obtained when propylene oxide is first used as the monomer in the production for the polymerization and then ethylene oxide is used as the monomer instead of propylene oxide before the polymerization is terminated.
- Suitable monoesters are poly (meth) acrylate monools.
- diisocyanates in particular diisocyanates, can be used as diisocyanates for the preparation of the polymer composition.
- Monomeric diisocyanates with a molecular weight in the range from 140 to 400 g / mol with aliphatic, cycloaliphatic, araliphatic and / or aromatically bound isocyanate groups are preferably used.
- the diisocyanate is selected from monomeric diisocyanates.
- Suitable monomeric diisocyanates are, in particular, 1,4-diisocyanatobutane (BDI), 1,5-diisocyanate pentane (PDI), 1,6-hexamethylene diisocyanate (HDI), 2- Methyl-1,5-diisocyanatopentane, 1,5-diisocyanato-2,2-dimethylpentane, 2,2,4- or 2,4,4-trimethyl-1,6-diisocyanatohexane, 1,10-diisocyanatodecane, 1,3- and 1,4-diisocyanatocyclohexane, 1,4-diisocyanato-3,3,5-trimethylcyclohexane, l-isocyanato-3,3,5-trimethyl-5-isocyanatomethylcyclohexane (isophorone diisocyanate; IPDI
- the diisocyanate is I-isocyan ato-3, 3,5-trimediyl -5-isocyanatomethyl-cyclohexane (IPDI), 1,6-hexamethylene diisocyanate (HDI), 2,4- and / or 2, 6- tolylene diisocyanate (TDI), or mixtures thereof.
- IPDI 3,5-trimediyl -5-isocyanatomethyl-cyclohexane
- HDI 1,6-hexamethylene diisocyanate
- TDI 2,4- and / or 2, 6- tolylene diisocyanate
- IPDI l-isocyanato-3,3,5-trimethyl-5-isocyanatomethyl-cyclohexane
- PDI 1,5-diisocyanatopentane
- HDI 1,6-hexamethylene diisocyanate
- HDI high viscosity
- a mixture of HDI with other diisocyanates is preferably used.
- the ratio of diisocyanates to NCO-reactive groups is particularly preferably at least 5: 1.
- diisocyanates preference is given to a diisocyanate with differently reactive isocyanate groups such as l-isocyanato-3,3,5-trimethyl-5-isocyanatomethyl-cyclohexane (IPDI), 2,4- and / or 2,6 -Toluylene diisocyanate (TDI) is used to achieve a low viscosity, since this reduces the proportion of diurethanes.
- IPDI l-isocyanato-3,3,5-trimethyl-5-isocyanatomethyl-cyclohexane
- TDI 2,6 -Toluylene diisocyanate
- Suitable NCO-reactive silanes have at least one NCO-reactive group, such as a hydroxyl, amino and mercapto group. Mixtures of different NCO-reactive silanes can also be used.
- a compound is used as the NCO-reactive silane which has at least one silicon atom, at least one organic radical bonded to the silicon atom via an Si-O bond and at least one organic radical bonded to the silicon atom via an Si-C bond, which has at least one NCO-reactive group.
- the NCO-reactive silane is an aminosilane, mercaptosilane or hydroxysilane.
- the NCO-reactive silane is preferably an aminosilane.
- the aminosilane for the preparation of the composition a compound is used which has at least one silicon atom, at least one organic radical bonded to the silicon atom via an Si-O bond and at least one organic radical bonded to the silicon atom via an Si-C bond , which has at least one primary or secondary amino group.
- the organic radical bonded to the silicon atom via an Si — O bond is preferably an alkoxy or acyloxy group.
- the amino group is preferably a secondary amino group. Such aminosilanes which have a secondary amino group are also referred to as secondary aminosilanes.
- primary and secondary aminosilanes can also be used.
- suitable aminosilanes are primary aminosilanes such as 3-aminopropyltrimethoxysilane, 3-aminopropyldimethoxymethylsilane; secondary aminosilanes such as N-butyl-3-aminopropyltrimethoxysilane, N-phenyl-3-aminopropyltrimethoxysilane; the products from the Michael-like addition of primary aminosilanes such as 3-aminopropyltrimethoxysilane or 3-aminopropyldimethoxymethylsilane to Michael acceptors such as acrylonitrile, (meth) acrylic acid esters, (meth) acrylic acid amides, maleic and fumaric acid diesters, citraconic acid diesters and itaconic acid diesters ters, for example dimethyl and diethyl N- (3-trimethoxysilylpropyl) amino succinate; and analogs of
- Particularly effective drying agents are obtained if the compounds used as aminosilanes in which the amino group is bonded to a silicon atom by a methylene group.
- Examples include N-cyclohexylaminomethyltriethoxysilane, which is available as GENIOSIL ® XL 926 (Wacker).
- the NCO-reactive silane is a compound of the formula (I):
- each radical is selected independently of one another from Cj-Cs-alkyl, C6-C2o-aryl, Cj- (VAIkoxy or Cj-Cs-acyloxy and at least one of the radicals R 1 is a Cj-Cs-alkoxy or Ci-C acyloxy radical is
- n is an integer between 1 and 4,
- X is selected from -OH, -SH or -NHR 2 ;
- R 2 is selected from H, Ci-C2o-alkyl, -CH2CH2CN or -CHR 3 CH2COOR 4 ,
- R 3 is selected from H and -COOR 4 .
- R 4 is in each case Cj-C 2 o-alkyl.
- Ci-Cs-alkoxy radical here denotes a radical of the general formula R-O-, where an R is an alkyl radical with 1 to 8 carbon atoms.
- a C i- (V acyloxy radical here denotes a radical of the general formula R-CO-O-, where R is hydrogen or an alkyl radical having 1 to 7 carbon atoms.
- radicals R 1 are each Ci-Cs-alkoxy groups and the optionally remaining radical R 1 is a Cj-Cs-alkyl group.
- Each R 1 radical is particularly preferably selected independently of one another from methyl, ethyl, methoxy and ethoxy.
- n is preferably 1 or 3.
- X is preferably -NHR 2 .
- R 2 is preferably selected from Ci-CV-alkyl, -CH2CH2CN or -CHR 3 CH2COOR 4 , where R 3 is selected from H and -COOR 4 , and R 4 is in each case Cj-C ö -alkyl.
- R 2 is particularly preferably selected from Ci -CV alkyl, or -CHR 3 CH2COOR 4 , where R 3 is -COOR 4 and R 4 in each case (Y (Y is alkyl).
- R 2 has the meaning -CHR 3 CH2COOR 4 , where R 3 is a group -COOR 4 , and R 4 in each case (Y (Y is alkyl.
- the present invention also relates to a moisture curing composition containing the polymer composition described above.
- the moisture-curing composition according to the invention is preferably an adhesive, sealant or coating material. It is particularly preferably a sealing or adhesive.
- the moisture-curing composition according to the invention generally contains, in addition to the polymer composition described above, at least one additive selected from one or more fillers, one or more crosslinking catalysts, one or more adhesion promoters and / or one or more plasticizers and / or a further binder based on silane-functional polymers with an average of more than one silane group per molecule.
- the moisture-curing composition contains the polymer composition described above and at least one crosslinking catalyst. In one embodiment, the moisture-curing composition contains the polymer composition described above and at least one filler. , In a further embodiment, the moisture-curing composition contains the polymer composition described above, at least one further silane-functional polymer with on average more than one silane group per molecule.
- the moisture-curing composition contains the polymer composition described above, at least one crosslinking catalyst and at least one filler. In a further embodiment, the moisture-curing composition contains the polymer composition described above, at least one crosslinking catalyst and at least one filler and at least one further silane-functional polymer with on average more than one silane group per molecule.
- the moisture-curing composition is preferably produced and stored in the absence of moisture.
- the moisture-curing composition is typically stored stable, that is, it can be stored in the absence of moisture in a suitable packaging or arrangement, such as, for example, a barrel, a bag or a cartridge, for a period of several months to a year and longer, without it being stored in it ren application properties or changed in their properties after curing to an extent relevant to their use.
- the storage stability is usually determined by measuring the viscosity or the pressing force.
- the silane groups contained in the polymer composition according to the invention come into contact with moisture.
- the silane groups have the property of hydrolyzing on contact with moisture.
- Organosilanols are formed and, through subsequent condensation reactions, organosiloxanes.
- organosiloxanes As a result of these reactions, which can be accelerated by using a crosslinking catalyst, the moisture-curing composition finally hardens. This process is also called networking.
- the water required for curing can either come from the air (atmospheric humidity) or be present in the coated substrates in the presence of moisture, or else the moisture-curing composition can be brought into contact with a water-containing component, for example by brushing, for example with a smoothing agent, or by spraying, or a water-containing component can be added to the moisture-curing composition during application, for example in the form of a water-containing paste.
- a water-containing component for example by brushing, for example with a smoothing agent, or by spraying, or a water-containing component can be added to the moisture-curing composition during application, for example in the form of a water-containing paste.
- the moisture-curing composition according to the invention preferably has a particularly low water content after production.
- the water content of the moisture-curing composition is preferably up to 0.1% by weight, preferably up to 0.05% by weight, particularly preferably up to 0.01% by weight, based on the total weight of the composition.
- the water content is determined in accordance with DIN EN ISO 15512: 2017-03, method B2.
- drying agents that is to say compounds which react with the water present in the moisture-curing composition.
- drying agents in particular reactive drying agents
- Reactive drying agents are those whose drying effect is due to a reaction with water. It is preferred not to add in particular reactive drying agents which do not meet the OECD polymer definition applicable on 01/01/2017, in particular alkylsilanes and silanes containing vinyl groups, such as, for example, vinyltrimethoxysilane or vinyltriethoxy silane.
- this term includes vinyl trialkoxysilanes and the reaction product te, which result from the reaction of these silanes with water, or partial hydrolyzates of these compounds.
- a reactive desiccant is generally understood to be a desiccant that undergoes a chemical reaction with water.
- physical desiccants bind water so that it is not available for a chemical reaction.
- Examples of a physical desiccant are special fillers such as zeolites or molecular sieves.
- the moisture-curing composition comprises, after preparation and before application, only up to 1% by weight, preferably up to 0.8% by weight, particularly preferably up to 0.5% by weight, of silanes and / or vinyl groups Alkylsilanes, based on the total weight of the moisture-curing composition.
- the moisture-curing composition preferably comprises only up to 1% by weight, preferably up to 0.8% by weight, particularly preferably up to 0.5% by weight of vinyltrimethoxy silane and vinyltriethoxysilane.
- the amount of the vinyl group-containing silanes and / or alkylsilanes used to produce the moisture-curing composition can be restricted to the proportions by weight given above, or it is even possible to dispense entirely with the use of vinyl groups-containing silanes.
- the moisture-curing composition contains no vinyl group-containing silanes and / or alkylsilanes or no reaction products formed during the reaction of these silanes with water. “None” here means that the individual concentrations of the vinyl group-containing silanes and / or alkylsilanes in each case do not exceed ⁇ 0.1% by weight based on the moisture-curing composition.
- the moisture-curing composition preferably has a viscosity at 23 ° C. of less than 100 Pa s measured according to the specification of DIN EN ISO 3219 / B3 at a shear rate of 40 / s.
- the viscosity of the moisture-curing composition is largely determined by the mixing ratio of silane-functional polymer and filler and the type of filler and can be modified if necessary by adding a plasticizer.
- the moisture-curing composition preferably comprises at least one filler, which in particular serves to influence the rheological properties and mechanical properties of the composition in the uncured and in the cured state.
- suitable fillers are, for example, chalk, lime powder, precipitated and / or pyrogenic silica, zeolites, bentonites, magnesium carbonate, diatomaceous earth, clay, clay, tallow, titanium oxide, iron oxide, Zinc oxide, sand, quartz, flint, mica, glass powder and other ground minerals.
- Organic fillers can also be used, in particular carbon black, graphite, wood fibers, wood flour, sawdust, cellulose, cotton, dried pulp, wood chips, chopped chaff, chaff, ground walnut shells and other fiber short cuts.
- short fibers such as glass fiber, glass filament, polyacrylonitrile, carbon fiber, Kevlar fiber or polyethylene fibers can also be added.
- Aluminum powder is also suitable as a filler.
- hollow spheres with a mineral shell or a plastic shell are suitable as fillers. These can be, for example, hollow glass spheres, which are commercially available under the trade names Glass Bubbles ® .
- Hollow spheres based on plastics are commercially available, for example, under the names Expancel ® or Dualite ® . These are composed of inorganic or organic substances, each with a diameter of 1 mm or less, preferably 500 ⁇ m or less.
- a highly disperse silica with a BET surface area of 10 to 500 m 2 / g is used as the filler.
- a silica does not significantly increase the viscosity of the composition according to the invention, but does contribute to a strengthening of the hardened preparation.
- This reinforcement improves, for example, the initial strengths, tensile shear strengths and the adhesion of the adhesives, sealants or coating materials in which the composition according to the invention is used.
- Uncoated silicas with a BET surface area of less than 100, more preferably less than 65 m 2 / g, and / or coated (coated) silicas with a BET surface area of 100 to 400, more preferably from 100 to 100 are preferred 300, in particular from 150 to 300 and very particularly preferably from 200 to 300 m 2 / g.
- the pore opening of the zeolite or zeolites used is just large enough to absorb water molecules. Accordingly, an effective pore opening of the zeolites of less than 0.4 nm is preferred.
- the effective pore opening is particularly preferably 0.3 nm ⁇ 0.02 nm.
- the zeolite (s) is / are preferably used in the form of a powder.
- the filler comprises naturally occurring silicates (for example clay, clay, talc, mica, kaolin), carbonates (for example chalk, dolomite), sulfates (for example barite), quartz sand, silica (in particular precipitated pyrogenic silica), metal hydroxides (for example aluminum hydroxide, magnesium hydroxide), metal oxides (for example zinc oxide, calcium oxide, aluminum oxide) and / or carbon black.
- silicates for example clay, clay, talc, mica, kaolin
- carbonates for example chalk, dolomite
- sulfates for example barite
- quartz sand silica (in particular precipitated pyrogenic silica)
- metal hydroxides for example aluminum hydroxide, magnesium hydroxide
- metal oxides for example zinc oxide, calcium oxide, aluminum oxide
- / or carbon black preferably used as the filler.
- Chalk is preferably used as the filler.
- Fatty acids, fatty acid soaps and fatty acid esters are preferably used as coating agents for this, for example lauric acid, palmitic acid or stearic acid, sodium or potassium salts of such acids or their alkyl esters.
- other surface-active substances such as sulfate esters of long-chain alcohols or alkylbenzenesulfonic acids or their sodium or potassium salts or coupling reagents based on silanes or titanates are also suitable.
- the surface treatment of the chalks is often associated with an improvement in the workability and the adhesive strength and also the weather resistance of the compositions.
- the coating agent for this is usually used in a proportion of 0.1 to 20% by weight, preferably 1 to 5% by weight, based on the total weight of the raw chalk.
- ground chalks can, for example, be made from natural lime, limestone or marble by mechanical grinding, whereby dry or moist methods can be used. Depending on the grinding process, fractions with different average particle sizes are obtained.
- Advantageous specific surface values (BET) lie between 1.5 m 2 / g and 50 m 2 / g.
- the fillers used to prepare the composition usually have a certain proportion of water.
- this is disadvantageous since the water present in the filler leads to a pre-crosslinking of the silane-functional polymers even during the storage of the composition. For this reason, either additional drying agents are added to the composition in the prior art, or only anhydrous fillers are used. Since the silane-functional polymer according to the invention also acts as a drying agent, a filler which contains a certain proportion of water can also be used to produce the composition according to the invention without this having any negative effects on the storage stability of the composition.
- the filler used for the preparation of the composition can therefore contain small amounts of water.
- the filler preferably contains water in an amount of up to 1% by weight, preferably 0.01 to 0.5% by weight, particularly preferably 0.1 to 0.3 % By weight, based on the mass of the filler, measured according to the regulation in / DIN EN ISO 15512: 2017-03, method B2.
- the proportion of filler in the moisture-curing composition is preferably 10 to 80% by weight, preferably 20 to 70% by weight, particularly preferably 40 to 70% by weight, based on the total weight of the moisture-curing composition.
- the moisture-curing composition preferably comprises at least one adhesion promoter.
- An adhesion promoter is a substance that improves the adhesion properties of adhesive layers on surfaces.
- Conventional tackifiers known to those skilled in the art can be used alone or as a combination of several compounds. Suitable, for example, are resins, terpene oligomers, coumarone / indene resins, aliphatic, petrochemical resins and modified phenolic resins.
- Suitable for the purposes of the present invention are, for example, hydrocarbon resins such as those obtained by polymerizing terpenes, mainly ⁇ - or ⁇ -pinene, dipentene or limonene.
- the terpene resins also include copolymers of terpenes and other monomers, for example styrene, ⁇ -methylstyrene, isoprene and the like.
- the resins mentioned are used, for example, as adhesion promoters for pressure-sensitive adhesives and coating materials.
- the terpene-phenol resins which are produced by acid-catalyzed addition of phenols to terpenes or rosin.
- Terpene-phenol resins are soluble in most organic solvents and oils and are miscible with other resins, waxes and rubber.
- the rosin resins and their derivatives for example their esters or alcohols, are also suitable as adhesion promoters in the context of the present invention.
- Silane coupling agents in particular aminosilanes, are particularly suitable.
- the moisture-curing composition comprises, as an adhesion promoter, a compound of the general formula (II)
- R 1 each radical is selected independently of one another from Ci-Cs-alkyl, Ci-Cs-alkoxy or Ci-Cs-acyloxy and at least one radical R 1 is a Ci-Cs-alkoxy or Ci-Cs-acyloxy radical,
- R 2 is a divalent and possibly one or more heteroatoms containing hydrocarbon radicals having 1 to 12 carbon atoms
- R 3 each radical is selected independently of one another from H and Ci-Cs-alkyl.
- Such compounds naturally have a high affinity for the binding polymer components of the moisture-curing composition, but also for a wide range of polar and non-polar surfaces, and therefore contribute to the formation of a particularly stable adhesion between the sealant or adhesive and the substrates to be connected at.
- the group R 2 can be, for example, a straight-chain, branched or cyclic, substituted or unsubstituted alkylene radical. If necessary, nitrogen (N) or oxygen (O) is contained as a hetero atom.
- the group R 2 can in particular comprise an acetoxy group -O-CO-R, where R is a divalent hydrocarbon radical.
- an oligomer of an aminosilane is used as the adhesion promoter; oligomers of aminosilanes in which the silicon atoms are connected via siloxane bonds are particularly suitable.
- oligomeric diaminosilanes such as Dynasylan ® 1146 from Evonik are. Partial hydrolyzates of aminosilanes or other silanes are also suitable. Oligomeric silanes are preferably used.
- the proportion of adhesion promoter in the moisture-curing composition is preferably 0.1 to 5% by weight, preferably 0.2 to 3% by weight, particularly preferably 0.5 to 1.5% by weight, based on the total weight of the moisture-curing composition.
- the moisture-curing compositions each contain less than 0.1% by weight of silane coupling agents and drying agents which do not meet the OECD polymer definition valid on January 1, 2017.
- the moisture-curing composition also comprises at least one catalyst for the crosslinking of silane-functional polymers (crosslinking catalyst).
- crosslinking catalyst facilitates the reaction of silane-functional polymer with water and the subsequent condensation reaction to form cross-linked polysiloxanes.
- the catalysts known in the prior art can be used as the crosslinking catalyst. For example, these are Lewis and / or Bronstedt acids or bases.
- the catalyst can be, for example, a metal catalyst or a nitrogen-containing compound. Suitable metal catalysts are in particular organotin compounds, organotitanates, organozirconates and organoaluminates.
- the organotitanates, organozirconates and organoaluminates preferably have ligands which are selected from an alkoxy group, sulfonate group, carboxylate group, dialkyl phosphate group, dialkyl pyrophosphate group and acetylacetonate group, where all ligands can be identical or different from one another.
- Suitable nitrogen-containing compounds are, for example, amidines; Amines such as, in particular, N-ethyldiisopropylamine, N, N, N ', N'-tetramethylalkylenediamines, polyoxyalkyleneamines, 1,4-di-azabicyclo [2.2.2] octane; Aminosilanes such as 3-aminopropyltrimethoxysilane, 3-aminopropyldimethoxymethylsilane, N- (2-aminoethyl) -3-aminopropyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, N- (2 -Aminoethyl) -N '- [3- (trimethoxysilyl) propyl] ethylenediamine as well as their analogues with ethoxy or isopropoxy instead of the methoxy groups on the
- crosslinking catalysts are organotitanates and amidines.
- Preferred organotitanates are, in particular, bis (ethylacetoacetato) diisobutoxy titanium (IV), bis (ethylacetoacetato) diisopropoxy titanium (IV), bis (acetylacetonato) diisopropoxy titanium (IV), bis (acetyl ylacetonato) diisobutoxy titanium (IV), tris (oxyethyl) amine isopropoxy titanium (IV), bis [tris (oxyethyl) amine] diisopropoxy titanium (IV), bis (2-ethylhexane-l, 3-dioxy) titanium (IV ), Bis (neopentyl (diallyl) oxy-di-ethoxytitan (IV), tris [2 - ((2-aminoethyl) amino) ethoxy] -ethoxy-titanium (IV), titanium (IV) tetrabutanolate, tetra- (2 -ethyl
- Preferred amidines are in particular 1,8-diazabicyclo [5.4.0] undec-7-ene (DBU), 1,5-diazabicyclo [4.3.0] non-5-ene (DBN), 6-dibutylamino-1, 8-diazabicyclo [5.4.0] undec-7-ene; Methyltriazabicyclodecene, guanidines such as tetramethylguanidine, 2-guanidinobenzimidazole, acetylacetoneguanidine, 1,3-di-o-tolylguanidine, 1,3-diphenylguanidine, tolylbiguanidine, 2-tert-butyl-l, l, 3,3-tetra- methyl guanidine; and imidazoles such as N- (3-trimethoxysilylpropyl) -4,5-dihydroimidazole and N- (3-triethoxysilylpropyl) -4,5-dihydroimidazo
- catalysts can be used, in particular mixtures of metal catalysts and non-metal catalysts which contain a nitrogen atom, the metal catalysts preferably not containing tin and the non-metal catalysts being amines.
- the moisture-curing composition therefore contains less than 0.1% tin (calculated on the weight fraction of tin atoms).
- the tin content of the composition is less than 0.06% by weight, in particular less than 0.01% by weight. Doing so preferably also the catalyst used for the preparation of the polymer composition according to the invention is selected or omitted accordingly, so that this is ensured.
- the proportion of crosslinking catalyst in the moisture-curing composition is preferably 0.001 to 5% by weight, preferably 0.005 to 1% by weight, particularly preferably 0.01 to 0.5% by weight, based on the total weight of the composition.
- the moisture-curing composition also comprises at least one plasticizer.
- plasticizers examples include esters of organic carboxylic acids or their anhydrides, such as fatty acid alkyl esters, phthalates, e.g. Dioctyl phthalate, diisononyl phthalate or diisodecyl phthalate, adipates, e.g. Dioctyl adipate, azelates and sebacates, polyols, e.g. Polyoxyalkylene polyols or polyester polyols, organic phosphoric and sulfonic acid esters, mineral oils or polybutenes.
- the use of plasticizers containing phthalates is preferably avoided.
- Preferred plasticizers are fatty acid alkyl esters, alkyl sulfonic acid esters of phenol, mineral oils, plasticizers based on renewable raw materials, which may also be fatty acid real alkyl esters, or combinations thereof.
- plasticizers based on renewable raw materials are vegetable oils, such as rapeseed oil, soybean oil and palm oil, and esters, in particular methyl esters, of vegetable oils, such as rapeseed oil methyl ester, soy methyl ester and palm oil methyl ester.
- plasticizers which are not based on renewable raw materials but are phthalate-free are 1,2-cyclohexanedicarboxylic acid diisononyl esters, alkyl sulfonic acid esters of phenol and polyethers with an average molecular weight of less than 4000 g / mol, such as Desmophen 2061 BD from Covestro GmbH AG ,
- the plasticizer particularly preferably comprises 1,2-cyclohexane-dicarboxylic acid diisononyl ester (DINCH), alkyl sulfonic acid ester of phenol, rapeseed oil methyl ester or a combination thereof, a combination of 1,2-cyclohexanedicarboxylic acid diisononyl ester and rapeseed oil methyl ester being preferably used.
- DICH 1,2-cyclohexane-dicarboxylic acid diisononyl ester
- alkyl sulfonic acid ester of phenol rapeseed oil methyl ester or a combination thereof
- 1,2-cyclohexanedicarboxylic acid diisononyl ester and rapeseed oil methyl ester being preferably used.
- the proportion of plasticizer in the moisture-curing composition is preferably 1 to 50% by weight, preferably 5 to 30% by weight, particularly preferably 5 to 25% by weight, based on the total weight of the moisture-curing composition.
- the moisture-curing composition can additionally contain further constituents.
- constituents of this type are solvents; Fibers, for example made of polyethylene; dyes; pigments; Rheology modifiers such as thickeners or thixotropic agents, for example urea compounds of the type described as thixotropic endowning agents in WO 2002/048228 A2 on pages 9 to 11, polyamide waxes, hydrogenated castor oil or swellable plastics such as PVC, stabilizers, for example against heat, light and UV radiation; flame-retardant substances; surface-active substances such as wetting agents, leveling agents, deaerating agents or defoamers; biocides such as algicides, fungicides or antifungal substances; as well as other substances commonly used in moisture-curing compositions.
- so-called reactive diluents can optionally be used, which are incorporated into the polymer matrix during the curing of the composition, in particular by reaction with the silane groups.
- silane-functional polymers can also be contained as part of the moisture-curing composition according to the invention.
- Those silane-functional polymers which have silane groups with less reactivity to water can be added particularly preferably. These are, for example, those polymers which have resulted from the reaction of polyols with isocyanatosilanes and / or those which are obtainable by a hydrosilylation reaction of polymers with terminal double bonds, for example poly (meth) acrylate polymers or polyether polymers, in particular of allyl-terminated polyoxyalkylene polymers, for example known from US-A 3,971,751 and US-B 6,207,766, the entire disclosure of which is hereby incorporated.
- silane-functional polymers examples include commercially available silane-modified polymers, in particular products under the trade names MS Polymer TM (from Kaneka Corp .; in particular the types S203H, S303H, S227, S810, MA903 or S943); MS Polymer TM or Silyl TM (from Kaneka Corp .; in particular the types SAT010, SAT030, SAT200, SAX350, SAX400, SAX725, MAX450, MAX602 or MAX951); Excestar ® (from Asahi Soft Co.
- MS Polymer TM from Kaneka Corp .; in particular the types S203H, S303H, S227, S810, MA903 or S943
- MS Polymer TM or Silyl TM from Kaneka Corp .; in particular the types SAT010, SAT030, SAT200, SAX350, SAX400, SAX725, MAX450, MAX602 or MAX951
- the moisture curing composition comprises
- the invention further relates to a process for the preparation of the polymer composition according to the invention, comprising the steps: b) reaction of an NCO-reactive polymer with a molecular weight M n between 2,000 and 25,000 g / mol, which has exactly one NCO-reactive group per molecule, with a diisocyanate, the molar ratio of the diisocyanate molecules to the NCO-reactive groups of the NCO-reactive polymer being at least 2: 1; and subsequently b) reaction of the remaining NCO groups in the reaction product from step a) with an NCO-reactive silane.
- the molar ratio of diisocyanate to NCO-reactive groups of the polymer in step a) of the production process is preferably 1.25 to 10, particularly preferably 1.5 to 7, most preferably 2 to 5.
- the reaction of the diisocyanate with the NCO-reactive polymer takes place, for example, at a temperature of 20 to 100 ° C., optionally with the addition of a suitable catalyst, in particular a urethanization catalyst, such as, for example, dibutyltin dilaurate.
- a suitable catalyst in particular a urethanization catalyst, such as, for example, dibutyltin dilaurate.
- the reaction product formed is reacted with the NCO-reactive silane, for example, at a temperature of 30 to 100 ° C.
- NCO groups Due to the high ratio of NCO groups to NCO-reactive groups, a rapid reaction can be carried out in many cases even without the addition of a tin-containing catalyst, especially when aromatic NCO groups such as those of toluyl diisocyanates react. Therefore, in a preferred embodiment, no tin-containing catalytic used, but tin-free catalysts such as bismuth, zirconium and / or titanium compounds known from the prior art. In a further embodiment, the implementation is carried out without a catalyst.
- At least one step a) and or b) is carried out in the presence of a plasticizer or solvent.
- a plasticizer or solvent is preferably dispensed with.
- the invention also relates to a process for producing the moisture-curing composition according to the invention, a polymer composition according to the invention being mixed with at least one filler, at least one adhesion promoter, at least one crosslinking catalyst and / or at least one plasticizer.
- the polymer composition according to the invention is mixed with at least one filler which has a water content of up to 1% by weight, preferably 0.01 to 0.5% by weight, particularly preferably 0.1 to 0.3% by weight, based on the total weight of the filler.
- the vinyl group-containing silane is not added to the moisture-curing composition.
- at most 1% by weight, preferably up to 0.8% by weight, particularly preferably up to 0.5% by weight, of vinyl groups-containing silanes are added to the moisture-curing composition, based on the total weight the moisture-curing composition.
- the composition contains less than 1.0% by weight of vinyltrimethoxy silane and vinyltriethoxysilane.
- a plurality of alkylsilanes and / or vinylsilanes are added, the proportion of each individual not exceeding 0.1% by weight, based on the total weight of the moisture-curing composition.
- the invention also relates to the use of the polymer composition according to the invention as a drying agent for moisture-curing adhesives, sealants and coating materials.
- this also relates to the use of the polymer composition according to the invention as a combination of drying agent and binder for moisture-curing adhesives, sealants and coating materials.
- the polymer compositions according to the invention are particularly suitable as drying agents for moisture-curing adhesives for fastening floor coverings; they can be used particularly well for use in parquet adhesives. Examples
- polyoxypropylene polymers started on diethylene glycol monobutyl ether, each with one hydroxyl group per molecule, prepared analogously to the specification in EP 0 654 302 Al, were used to produce the polymer compositions according to the invention.
- the polymer compositions P1-P3 are mixed with the amount of water given in the table, the mixture is homogenized in a speed mixer for 10 min and after storage for 24 hours in a closed vessel, the viscosity is determined at 23 ° C.
- Example FZ-1 (according to the invention, without desiccant VTMO)
- a moisture-curing compositions based on the polymer compositions P2 was prepared according to the following procedure: 516.16 g of above 16 hours at 100 ° C in a convection oven to a water content of 0.08 wt .-% of dried filler Omyalite 95 T ® (calcium carbonate, Firma Omya) are mixed with 132.2 g plasticizer (Mesamoll ®, company Lan xess, water content 0.03 wt .-%), 267.21 g of silane-functional polymer SP and 56.2 g of polymer composition P2, 8.1 g Cab- O- Sil® TS 720 (hydrophobic fumed silica, Cabot, water content 0.11% by weight) and 2.9 gl, 8-diazabicyclo [5.4.0] undec-7-en (Sigma-Aldrich Co.
- Example FZ-2 (comparison, FZ-2, but without addition of the polymer compositions P2 according to the invention, without desiccant VTMO)
- Static vacuum is understood here to mean that the apparatus is evacuated to a pressure of 200 mbar (dynamic vacuum) and then the connection to the vacuum pump is disconnected. The cooling was chosen so that a temperature of 65 ° C is not exceeded during the entire production. Then 1.0 g of aminopropyltrimethoxysilane (Dynasilan® AMMO, Evonik) is added and the mixture is homogenized for 5 min under static vacuum using the butterfly stirrer (200 revolutions / min).
- Dynasilan® AMMO, Evonik aminopropyltrimethoxysilane
- Example FZ-3 (comparison, FZ-1, but without addition of the polymer compositions P2 according to the invention, with addition of desiccant VTMO and aminosilane)
- Static vacuum is understood here to mean that the apparatus except for one Pressure of 200 mbar is evacuated (dynamic vacuum) and then the connection to the vacuum pump is disconnected. The cooling was chosen so that a temperature of 65 ° C is not exceeded during the entire production. 15.0 g of an oligomeric Aminosilanes (Dynasilan ® 1146, Evonik) are then added and the mixture is homogenized for 5 min under static vacuum with the Butterflyrlicker (200 revolutions / min).
- the moisture-curing compositions were applied after 7 days in a cartridge using a doctor blade to form membranes with a uniform layer thickness of 2 mm on a polyethylene film and cured for 14 days at 23 ° C. and 50% atmospheric humidity, the membranes after 7 days were removed from the film and turned.
- the properties of these membranes were then determined using the following methods.
- the viscosity was determined after seven or 60 days of storage in accordance with the specification in DIN DIN EN ISO 3219 / B3 at a shear rate of 40 / s, unless stated otherwise.
- the Shore A hardness was tested on the membranes in accordance with the specification in DIN ISO 7619-1. To determine the Shore A hardness, three membranes were placed on top of one another to ensure a layer thickness of 6 mm.
- the elongation at break and the tensile strength were determined by means of a tensile test in accordance with the specification in DIN 53 504 on S2 shoulder bars, which were punched out of the membranes produced as described above using a shaping punch.
- the test speed was 200 mm / min.
- a film of the adhesive is applied to a glass plate previously cleaned with ethyl acetate and immediately placed in a drying recorder (BK 3 drying recorder BYK-Gardner).
- the needle was loaded with 10 g and moved over a distance of 35 cm over a period of 24 hours.
- the drying recorder was in a climate room at 23 ° C and 50% rel. Humidity. The time of disappearance of the permanent trace of the needle from the film was specified as the skin formation time.
- the water content was determined in accordance with DIN EN ISO 15512: 2017-03, method B2.
- the tensile shear strength was determined in accordance with DIN EN 14293, position sequence b).
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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EP18189954.3A EP3613786A1 (de) | 2018-08-21 | 2018-08-21 | Trocknungsmittel für feuchtigkeitshärtende zusammensetzungen |
PCT/EP2019/071840 WO2020038804A1 (de) | 2018-08-21 | 2019-08-14 | Trocknungsmittel für feuchtigkeitshärtende zusammensetzungen |
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EP3841138A1 true EP3841138A1 (de) | 2021-06-30 |
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EP18189954.3A Ceased EP3613786A1 (de) | 2018-08-21 | 2018-08-21 | Trocknungsmittel für feuchtigkeitshärtende zusammensetzungen |
EP19752527.2A Pending EP3841138A1 (de) | 2018-08-21 | 2019-08-14 | Trocknungsmittel für feuchtigkeitshärtende zusammensetzungen |
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EP (2) | EP3613786A1 (de) |
CN (1) | CN112673037B (de) |
WO (1) | WO2020038804A1 (de) |
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US3971751A (en) | 1975-06-09 | 1976-07-27 | Kanegafuchi Kagaku Kogyo Kabushiki Kaisha | Vulcanizable silylether terminated polymer |
DE3737245A1 (de) * | 1987-11-03 | 1989-05-18 | Bayer Ag | Waessrige loesungen oder dispersionen von polyurethanen, ein verfahren zu ihrer herstellung und ihre verwendung als beschichtungsmittel oder zur herstellung von beschichtungsmitteln |
US5158922A (en) | 1992-02-04 | 1992-10-27 | Arco Chemical Technology, L.P. | Process for preparing metal cyanide complex catalyst |
DE4237468A1 (de) | 1992-11-06 | 1994-05-11 | Bayer Ag | Alkoxysilan- und Aminogruppen aufweisende Verbindungen |
US5470813A (en) | 1993-11-23 | 1995-11-28 | Arco Chemical Technology, L.P. | Double metal cyanide complex catalysts |
US6207766B1 (en) | 1997-04-21 | 2001-03-27 | Asahi Glass Company Ltd. | Room temperature-setting compositions |
JP3830274B2 (ja) | 1998-04-16 | 2006-10-04 | 三井化学株式会社 | ポリアルキレンオキシドの製造方法 |
JP2002179753A (ja) | 2000-12-13 | 2002-06-26 | Nippon Shiika Kk | 高耐候性ポリウレタン系一液型湿気硬化性組成物 |
US20030232949A1 (en) * | 2002-06-18 | 2003-12-18 | Roesler Richard R. | Moisture-curable, polyether urethanes with reactive silane groups and their use as sealants, adhesives and coatings |
DE102005026085A1 (de) | 2005-06-07 | 2006-12-14 | Construction Research & Technology Gmbh | Silan-modifizierte Harnstoff-Derivate, Verfahren zu ihrer Herstellung und deren Verwendung als Rheologiehilfsmittel |
EP2952533A1 (de) | 2014-06-04 | 2015-12-09 | Sika Technology AG | Zinn- und Phthalat-freier Dichtstoff auf Basis von silanterminierten Polymeren |
JP6963002B2 (ja) * | 2016-07-21 | 2021-11-05 | シーカ テクノロジー アクチェンゲゼルシャフト | 改善された機械的特性を有する難燃性接着剤及びシーラント |
-
2018
- 2018-08-21 EP EP18189954.3A patent/EP3613786A1/de not_active Ceased
-
2019
- 2019-08-14 WO PCT/EP2019/071840 patent/WO2020038804A1/de unknown
- 2019-08-14 EP EP19752527.2A patent/EP3841138A1/de active Pending
- 2019-08-14 CN CN201980054660.9A patent/CN112673037B/zh active Active
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US20210317253A1 (en) | 2021-10-14 |
CN112673037A (zh) | 2021-04-16 |
EP3613786A1 (de) | 2020-02-26 |
CN112673037B (zh) | 2023-05-16 |
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