EP3841179A1 - Feuchtigkeitshärtende rtv-silikonzusammensetzung mit homogener tiefenhärtung - Google Patents
Feuchtigkeitshärtende rtv-silikonzusammensetzung mit homogener tiefenhärtungInfo
- Publication number
- EP3841179A1 EP3841179A1 EP19755928.9A EP19755928A EP3841179A1 EP 3841179 A1 EP3841179 A1 EP 3841179A1 EP 19755928 A EP19755928 A EP 19755928A EP 3841179 A1 EP3841179 A1 EP 3841179A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- moisture
- silicone composition
- composition according
- polydiorganylsiloxane
- general formula
- 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 111
- 238000013008 moisture curing Methods 0.000 title claims abstract description 29
- 229920002631 room-temperature vulcanizate silicone Polymers 0.000 title description 7
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 54
- 238000004132 cross linking Methods 0.000 claims abstract description 30
- 239000003054 catalyst Substances 0.000 claims abstract description 24
- 239000004971 Cross linker Substances 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 238000009833 condensation Methods 0.000 claims abstract description 19
- 230000005494 condensation Effects 0.000 claims abstract description 19
- 229920000642 polymer Polymers 0.000 claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims abstract description 9
- 230000001070 adhesive effect Effects 0.000 claims abstract description 9
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- -1 aluminum silicates Chemical class 0.000 claims description 51
- 125000004432 carbon atom Chemical group C* 0.000 claims description 28
- 125000003545 alkoxy group Chemical group 0.000 claims description 26
- 239000000758 substrate Substances 0.000 claims description 26
- 150000001875 compounds Chemical class 0.000 claims description 17
- 238000001723 curing Methods 0.000 claims description 17
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 15
- 239000000945 filler Substances 0.000 claims description 14
- 150000002430 hydrocarbons Chemical group 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims description 12
- 239000004615 ingredient Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- 125000000524 functional group Chemical group 0.000 claims description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims description 10
- 238000006482 condensation reaction Methods 0.000 claims description 9
- 229910052731 fluorine Inorganic materials 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 8
- 229930195733 hydrocarbon Natural products 0.000 claims description 7
- 239000004215 Carbon black (E152) Substances 0.000 claims description 5
- 238000004026 adhesive bonding Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 5
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000002318 adhesion promoter Substances 0.000 claims description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
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- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 125000002252 acyl group Chemical group 0.000 claims description 3
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- 238000005516 engineering process Methods 0.000 claims description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 3
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical class [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 239000005909 Kieselgur Substances 0.000 claims description 2
- 239000006057 Non-nutritive feed additive Substances 0.000 claims description 2
- MXRIRQGCELJRSN-UHFFFAOYSA-N O.O.O.[Al] Chemical compound O.O.O.[Al] MXRIRQGCELJRSN-UHFFFAOYSA-N 0.000 claims description 2
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- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical class [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 2
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- 239000003995 emulsifying agent Substances 0.000 claims description 2
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- 229910052602 gypsum Inorganic materials 0.000 claims description 2
- 239000012760 heat stabilizer Substances 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000010445 mica Substances 0.000 claims description 2
- 229910052618 mica group Inorganic materials 0.000 claims description 2
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical class [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical class [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 claims description 2
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- 239000006254 rheological additive Substances 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 239000013008 thixotropic agent Substances 0.000 claims description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 2
- 238000009736 wetting Methods 0.000 claims description 2
- 239000010457 zeolite Substances 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 238000009419 refurbishment Methods 0.000 claims 1
- 239000010936 titanium Substances 0.000 claims 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 claims 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 abstract description 11
- 238000005336 cracking Methods 0.000 abstract 1
- 150000003254 radicals Chemical class 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 8
- 239000004205 dimethyl polysiloxane Substances 0.000 description 7
- 125000000217 alkyl group Chemical group 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 6
- 239000003446 ligand Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 125000004429 atom Chemical group 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 4
- 239000004809 Teflon Substances 0.000 description 4
- 229920006362 Teflon® Polymers 0.000 description 4
- 150000001409 amidines Chemical class 0.000 description 4
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- 238000006459 hydrosilylation reaction Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- 150000004756 silanes Chemical class 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 125000005369 trialkoxysilyl group Chemical group 0.000 description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 3
- 229910008051 Si-OH Inorganic materials 0.000 description 3
- 229910006358 Si—OH Inorganic materials 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 125000005370 alkoxysilyl group Chemical group 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 3
- 150000002357 guanidines Chemical class 0.000 description 3
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
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- 238000010626 work up procedure Methods 0.000 description 3
- UUEWCQRISZBELL-UHFFFAOYSA-N 3-trimethoxysilylpropane-1-thiol Chemical compound CO[Si](OC)(OC)CCCS UUEWCQRISZBELL-UHFFFAOYSA-N 0.000 description 2
- YPIFGDQKSSMYHQ-UHFFFAOYSA-N 7,7-dimethyloctanoic acid Chemical compound CC(C)(C)CCCCCC(O)=O YPIFGDQKSSMYHQ-UHFFFAOYSA-N 0.000 description 2
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- HGQSXVKHVMGQRG-UHFFFAOYSA-N dioctyltin Chemical compound CCCCCCCC[Sn]CCCCCCCC HGQSXVKHVMGQRG-UHFFFAOYSA-N 0.000 description 2
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- 238000005259 measurement Methods 0.000 description 2
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 2
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 description 2
- 125000002572 propoxy group Chemical group [*]OC([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 2
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- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 2
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 2
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- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 1
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- YHWCPXVTRSHPNY-UHFFFAOYSA-N butan-1-olate;titanium(4+) Chemical group [Ti+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] YHWCPXVTRSHPNY-UHFFFAOYSA-N 0.000 description 1
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- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
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- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- VSYLGGHSEIWGJV-UHFFFAOYSA-N diethyl(dimethoxy)silane Chemical compound CC[Si](CC)(OC)OC VSYLGGHSEIWGJV-UHFFFAOYSA-N 0.000 description 1
- AHUXYBVKTIBBJW-UHFFFAOYSA-N dimethoxy(diphenyl)silane Chemical compound C=1C=CC=CC=1[Si](OC)(OC)C1=CC=CC=C1 AHUXYBVKTIBBJW-UHFFFAOYSA-N 0.000 description 1
- ORHSGYTWJUDWKU-UHFFFAOYSA-N dimethoxymethyl(ethenyl)silane Chemical compound COC(OC)[SiH2]C=C ORHSGYTWJUDWKU-UHFFFAOYSA-N 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- PWEVMPIIOJUPRI-UHFFFAOYSA-N dimethyltin Chemical compound C[Sn]C PWEVMPIIOJUPRI-UHFFFAOYSA-N 0.000 description 1
- LQRUPWUPINJLMU-UHFFFAOYSA-N dioctyl(oxo)tin Chemical compound CCCCCCCC[Sn](=O)CCCCCCCC LQRUPWUPINJLMU-UHFFFAOYSA-N 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical group [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 1
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 description 1
- SBRXLTRZCJVAPH-UHFFFAOYSA-N ethyl(trimethoxy)silane Chemical compound CC[Si](OC)(OC)OC SBRXLTRZCJVAPH-UHFFFAOYSA-N 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- POPACFLNWGUDSR-UHFFFAOYSA-N methoxy(trimethyl)silane Chemical compound CO[Si](C)(C)C POPACFLNWGUDSR-UHFFFAOYSA-N 0.000 description 1
- BKXVGDZNDSIUAI-UHFFFAOYSA-N methoxy(triphenyl)silane Chemical compound C=1C=CC=CC=1[Si](C=1C=CC=CC=1)(OC)C1=CC=CC=C1 BKXVGDZNDSIUAI-UHFFFAOYSA-N 0.000 description 1
- 125000004184 methoxymethyl group Chemical group [H]C([H])([H])OC([H])([H])* 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- XCOASYLMDUQBHW-UHFFFAOYSA-N n-(3-trimethoxysilylpropyl)butan-1-amine Chemical compound CCCCNCCC[Si](OC)(OC)OC XCOASYLMDUQBHW-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 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
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920005553 polystyrene-acrylate Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 229920002620 polyvinyl fluoride Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- RLJWTAURUFQFJP-UHFFFAOYSA-N propan-2-ol;titanium Chemical compound [Ti].CC(C)O.CC(C)O.CC(C)O.CC(C)O RLJWTAURUFQFJP-UHFFFAOYSA-N 0.000 description 1
- 238000000425 proton nuclear magnetic resonance spectrum Methods 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical class [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- VXUYXOFXAQZZMF-UHFFFAOYSA-N tetraisopropyl titanate Substances CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 1
- NBXZNTLFQLUFES-UHFFFAOYSA-N triethoxy(propyl)silane Chemical compound CCC[Si](OCC)(OCC)OCC NBXZNTLFQLUFES-UHFFFAOYSA-N 0.000 description 1
- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- HUZZQXYTKNNCOU-UHFFFAOYSA-N triethyl(methoxy)silane Chemical compound CC[Si](CC)(CC)OC HUZZQXYTKNNCOU-UHFFFAOYSA-N 0.000 description 1
- NMEPHPOFYLLFTK-UHFFFAOYSA-N trimethoxy(octyl)silane Chemical compound CCCCCCCC[Si](OC)(OC)OC NMEPHPOFYLLFTK-UHFFFAOYSA-N 0.000 description 1
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 description 1
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 1
- PZJJKWKADRNWSW-UHFFFAOYSA-N trimethoxysilicon Chemical group CO[Si](OC)OC PZJJKWKADRNWSW-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- UGKPSBSCMJBEJX-UHFFFAOYSA-N zinc N,N-dibutyl-3-oxoheptanamide Chemical compound [Zn+2].CCCCN(CCCC)C(=O)CC(=O)CCCC.CCCCN(CCCC)C(=O)CC(=O)CCCC UGKPSBSCMJBEJX-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- 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
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/18—Polysiloxanes containing silicon bound to oxygen-containing groups to alkoxy or aryloxy 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
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
- C08L83/06—Polysiloxanes containing silicon bound to oxygen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
- C08L83/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
-
- 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
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
-
- 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
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
- C09J183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
-
- 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
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
- C09J183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
Definitions
- the invention relates to moisture-curing, condensation-crosslinking silicone compositions, their use as elastic adhesives and sealants, and to methods for grouting and gluing substrates.
- Silicones are known compositions which have long been used as adhesives or sealants. Such silicones can be designed as one- or two-component silicone compositions and usually contain a polydiorganylsiloxane, one, as the main components
- RTV room temperature crosslinking or vulcanizing
- HTV high temperature crosslinking or vulcanizing
- RTV-1 silicones and RTV-2 silicones One- and two-component RTV silicones are also referred to as RTV-1 silicones and RTV-2 silicones.
- Moisture-curing, condensation-crosslinking RTV silicones have long been known. It is also known that such compositions can harden on the basis of so-called neutral crosslinking.
- neutral cross-linking RTV-1 silicones release oxime compounds, the smell of which is perceived as very unpleasant and which are less preferred for reasons of health protection.
- neutral crosslinking RTV-1 silicones containing alkoxy groups
- Polydiorganylsiloxanen or crosslinkers are formulated. Neutral
- crosslinking RTV-2 silicones are usually based on alkoxy groups Links. Fission products of the crosslinking are then alcohols, the smell of which is significantly less unpleasant.
- the polydiorganylsiloxanes used in moisture-curing, condensation-crosslinking silicones can be terminated with hydroxyl groups. However, it has been shown that this type of end group limits the properties that can be achieved and leads to major problems in the compounding process.
- Alkyl dialkoxysilyl or trialkoxysilyl end groups may be modified. Such modified polymers have long been known. Your production by
- moisture-curing, condensation-curing RTV silicones depends on various factors, including the type and number of hydrolyzable groups. For example, an acetoxy group bound to a Si atom will react faster in the presence of water than an alkoxy group. If several hydrolyzable groups of the same type are bonded to one Si atom, the first hydrolyzable group will react with water faster than the second, third or fourth group.
- EP 1013699 and WO 00/37565 disclose polydiorganylsiloxanes which contain multifunctional chain ends, obtainable by a Hydrosilylation reaction of vinyl-terminated polydiorganylsiloxane with multifunctional, Si-H-containing end blockers. Each chain end thus contains a trialkoxysilyl unit and the presence of a large number of such chain ends in a polymer chain enables particularly rapid curing.
- a disadvantage is that the in EP1013699 and WO
- condensation-crosslinking silicone compositions which show a homogeneous deep curing and overcome the disadvantages of the prior art.
- the object of the present invention is therefore to provide a moisture-curing, condensation-crosslinking RTV
- Silicone composition with homogeneous deep hardening that hardens even under movement without the formation of cracks. It has surprisingly been found that when using silane and / or siloxane crosslinkers with hydrolyzable alkoxy groups in a condensation-crosslinking RTV-1 silicone, homogeneous deep curing and thus crack-free curing under motion is made possible if with
- Polydiorganylsiloxane is at least the same, preferably higher than that of the hydrolyzable alkoxy groups of the crosslinkers. Accordingly, the invention relates to a moisture-curing, condensation-crosslinking silicone composition
- Hydrocarbon groups with 1 -8 carbon atoms which can be substituted by F, N, P, O and / or S, Y is a divalent
- Formula (I) at least 90%, preferably at least 95%, particularly preferably at least 99% of the total mass of present
- the viscosities specified here can be determined in accordance with DIN 53018.
- the measurement can be carried out using an MCR101 cone-plate viscometer from Anton-Paar, Austria, with a cone type CP 25-1 at 23 ° C.
- the viscosity values given relate to a shear rate of 0.5 s -1 .
- the crosslinking reaction includes flydrolysis and condensation reactions of alkoxysilyl groups. These are known to the person skilled in the art and can be represented schematically as follows.
- alkoxysilyl groups hydrolyze to form silanoien (Si-OH) and an alcohol (step 1).
- the silanoia are generally not stable and spontaneously condense to form siloxane bonds (-Si-O-Si-), so that siloxanes are formed (step 2).
- step 2 If there is more than one alkoxy group per Si atom, more highly condensed systems can be formed. In the case of partial hydrolysis, only some of the alkoxy groups are hydrolyzed and condensed.
- the reaction rate of the crosslinking reaction depends on the kinetics of the substeps. This kinetics can be determined, for example, in 1 H-NMR and 29 Si-NMR experiments for individual components, such as
- homogeneous deep hardening means a homogeneous hardening of a silicone composition in a joint over its entire cross-section. This means that the properties, especially the mechanical properties such as hardness and elasticity, of the
- composition according to the invention contains
- R 1 , R 2 and R 3 are independently monovalent
- Hydrocarbon groups with 1 -8 carbon atoms which can be substituted by F, N, P, O and / or S, Y is a divalent
- polydiorganylsiloxanes of the general formula (I) make up at least 90%, preferably at least 95%, particularly preferably at least 99% of the total mass of polydiorganylsiloxane present and the polymer end groups Si (OR 3 ) of the at least one polydiorganylsiloxane of the general formula (I) are one have at least the same, preferably higher reaction rate in the crosslinking reaction than the hydrolyzable radicals of c).
- composition according to the invention is a moisture-curing, condensation-crosslinking RTV silicone. This can be as one
- RTV-1 silicone one-component composition
- RTV-1 silicones cure by contact with water, generally by contact with air humidity. Or it can exist as a two-component composition (RTV-2).
- RTV-2 mixtures are usually located as two separate ones
- Components A and B of which one component is usually not or only slightly reactive towards moisture.
- curing takes place by reaction of components of component A with components of component B after the two have been mixed
- composition according to the invention is preferably in the form of a one-component RTV-1 silicone composition.
- composition according to the invention comprises one or more crosslinkable polydiorganylsiloxanes.
- crosslinkable polydiorganylsiloxanes are well known to those skilled in the art.
- the crosslinkable polydiorganylsiloxanes have functional groups, in particular two or more functional groups, via which crosslinking is possible. These functional groups
- Groups can be in a side group or an end group of the
- Polydiorganylsiloxans are present, terminal functional groups being preferred. Such polydiorganylsiloxanes with terminal functional groups are also referred to as ⁇ , w-functional polydiorganylsiloxanes.
- the functional groups of the at least one crosslinkable polydiorganylsiloxane are alkoxy groups.
- the viscosity of the polydiorganylsiloxanes used can vary widely depending on the intended use.
- the polydiorganylsiloxane used according to the invention can be used at a temperature of 23 ° C e.g. have a viscosity of 10 to 500,000 mPas, preferably from 5,000 to 400,000 mPas, particularly preferably from 10,000 to 320,000 mPas.
- the at least one crosslinkable polydiorganylsiloxane is preferably a linear polydiorganylsiloxane, in particular a polydiorganylsiloxane of the formula (I)
- R 1 and R 2 are independently linear or branched, monovalent hydrocarbon radicals having 1 to 8 carbon atoms, which may optionally be substituted by F, N, P, O and / or S, and optionally one or more CC multiple bonds and / or have cycloaliphatic and / or aromatic components.
- the radicals R 1 and R 2 are preferred
- Alkyl groups, especially methyl, can be replaced by other groups such as vinyl, phenyl or 3,3,3-trifluoropropyl.
- the index n of the general formula (I) is chosen so that the polydiorganylsiloxane at a temperature of 23
- the index n of the general formula (I) can be, for example, in the range from 10 to 10,000 and preferably from 100 to 1500.
- the at least one crosslinkable polydiorganylsiloxane is an alkoxy-terminated polydiorganylsiloxane, preferably a crosslinkable alkoxy-terminated polydimethylsiloxane. Preferred crosslinkable
- Polydiorganylsiloxanes are linear polydiorganylsiloxanes.
- Alkoxy groups OR 3 according to the general formula (I) are, independently of one another, alkoxy groups with 1 to 8 C atoms, which can optionally be substituted by F, N, P, O and / or S.
- the radicals R 3 are, independently of one another, linear or branched, monovalent hydrocarbon radicals having 1 to 8 carbon atoms, which may contain one or more fleteroatoms F, N, P, O and / or S, and optionally one or more CC multiple bonds and / or have cycloaliphatic and / or aromatic components.
- the radicals R 3 can, for example, be selected independently of one another from one or more of the groups methyl, ethyl, n-propyl, i-popyl, n-butyl, i-butyl, n-pentyl, i-pentyl, n-flexyl, i- Hexyl, n-heptyl, i-heptyl, n-octyl, i-octyl, cyclopentyl, cyclohexyl, phenyl, vinyl, allyl, methoxymethyl, 2-methoxyethyl ethoxymethyl, 2- (2-methoxyethoxy) ethyl, trifluoropropyl, 2-aminoethyl, 6- aminohexyl.
- radicals R 3 are preferably selected independently of one another
- Y is a divalent hydrocarbon group with 1 to 8 C atoms, preferably with 2 to 6 C atoms, particularly preferably an ethylene or flexylene
- polydiorganylsiloxanes of the general formula (I) make up at least 90%, preferably at least 95%, particularly preferably at least 99% of the total mass of polydiorganylsiloxane present
- Polydiorganylsiloxanes of the general formula (I) can by
- Production by condensation reaction can be carried out by methods such as described in EP763557 or EP0559045.
- polydiorganylsiloxanes of the general formula (I) can be used
- Hydrosilylation reaction of vinyl-terminated polydiorganylsiloxanes with Si-H functional alkoxy-silanes or -siloxanes or of Si-H-terminated polydiorganylsiloxanes with vinyl-functional alkoxy-silanes or -siloxanes can be prepared.
- the preparation by hydrosilylation reaction can be carried out by methods as described, for example, in US4898910.
- polydiorganylsiloxanes of the general formula (I) are prepared by the condensation reaction of OH-terminated polydiorganylsiloxanes with alkoxy-functional silanes or siloxanes.
- Polydiorganylsiloxanes of the general formula (I) are produced by the condensation reaction of OH-terminated polydiorganylsiloxanes with alkoxy-functional silanes or siloxanes with catalysis by amidines or guanidines, optionally with the co-catalysis of a metal catalyst.
- Guanidine catalysts are described, for example, in WO 2016/207156 and in WO 2015/193208.
- composition according to the invention further comprises at least one crosslinker with hydrolyzable groups.
- Hydrolyzable groups are understood here to mean groups which can react with the functional groups of the polydiorganylsiloxane to form a siloxane bond. The reaction preferably takes place between the functional group of
- Polydiorganylsiloxans and the hydrolyzable group of the crosslinker a condensation reaction, possibly following a hydrolysis reaction.
- by-products such as water or alcohol are released.
- R 4 is, independently of one another, a non-hydrolyzable monovalent hydrocarbon radical having 1 to 18 carbon atoms, which is saturated or unsaturated and optionally contains one or more functional groups containing the elements F, N, P, O and / or S, m is 0, 1, 2 or 3, preferably 0 or 1, X independently of one another is an OH group, a linear or branched alkoxy group having 1 to 8 C atoms, which may be represented by F, N, P, O and / or S can be substituted and
- Is a hydrogen atom or a monovalent hydrocarbon group with 1 to 8 C atoms and R 6 is an acyl group with 1 to 9 C atoms, and o, p, q are 0, 1 or 2, with the proviso that o + p + q 2.
- alkoxy groups X are, independently of one another, alkoxy groups having 1 to 8 C atoms, which may or may not be substituted by F, N, P, O and / or S.
- the alkoxy groups X can, for example, be selected independently of one another from one or more of the groups methoxy, ethoxy, n-propoxy, i-propoxy, n-butoxy, i-butoxy, n-pentoxy, i-pentoxy, n-hexoxy, i -Hexoxy, n-heptoxy, i-heptoxy, n-octoxy, i-octoxy, cyclopentoxy, Cyclohexoxy, phenoxy, vinyloxy, allyloxy, methoxymethoxy, 2-methoxyethoxy, ethoxymethoxy, 2- (2-methoxyethoxy) ethoxy, trifluoropropoxy, 2-aminoethoxy, 6-aminohexoxy.
- the alkoxy groups X are preferably selected independently of one another from alkoxy groups having 1 to 6, in particular having 1 to 3, carbon atoms, such as propoxy, ethoxy and methoxy, ethoxy being particularly preferred.
- all groups X are identical and selected from alkoxy groups with 1 to 6, in particular with 1 to 3, carbon atoms, such as propoxy, ethoxy and methoxy, ethoxy being particularly preferred.
- R 4 and m have the meaning given above and the R 5 are independently a hydrogen atom or a monovalent hydrocarbon group having 1 to 8 C atoms, preferably a linear hydrocarbon group having 1 to 4 carbon atoms, particularly preferably methyl, and the R 6 are independent
- crosslinkers of the general formula (III) are methyltrimethoxysilane, dimethyldimethoxysilane, ethyltrimethoxysilane, propyltrimethoxysilane, i-butyltrimethoxysilane, octyltrimethoxysilane, flexadecyltrimethoxysilane,
- all groups X are alkoxy groups, particularly preferably methoxy and / or ethoxy groups.
- crosslinkers can be any organic radicals. According to the previous description, crosslinkers can be any organic radicals.
- general formula (III) are fully or partially hydrolyzed and condensed to siloxanes.
- Such condensed siloxanes can be prepared from one or more different crosslinking agents of the general formula (III), at least one of the underlying crosslinking agents being a
- the siloxane is therefore preferably an alkoxy group-containing condensation product of the monomeric alkoxysilanes of the general formula (III).
- Mono-, di-, tri- or tetraalkoxysilanes or mixtures thereof can be used for the partial flydrolysis and condensation, at least one alkoxysilane being a tri- or tetraalkoxysilane.
- the degree of condensation and the proportion of the alkoxy groups remaining in the siloxane formed can be set, the average degree of condensation of the siloxane being at least 4.
- the siloxane can consist of linear and / or branched chains, rings or cages. It is clear to the person skilled in the art that mixtures of such structural elements are usually present.
- the alkoxysilanes can contain non-hydrolyzable groups bonded to the Si atom, in particular monovalent groups
- Hydrocarbon radicals which may have one or more functional groups, which remain in the siloxane formed.
- the alcohol formed as a by-product can be removed, for example by evaporation in vacuo.
- Siloxanes formed therefrom and containing alkoxy groups are known and are commercially available.
- monoalkoxysilanes and / or dialkoxysilanes can also be used to produce the siloxane containing alkoxy groups. Examples are trimethyl methoxysilane, triethyl methoxysilane,
- Triphenylmethoxysilane dimethyldimethoxysilane, diethyldimethoxysilane and diphenyldimethoxysilane and the corresponding silanes, in which all
- Methoxy groups are replaced by either ethoxy groups or propoxy groups.
- the monoalkoxysilanes and / or dialkoxysilanes can e.g. be used to adjust the degree of condensation or the branching of the siloxane formed.
- Preferred tri- or tetraalkoxysilanes which are used for the preparation of the siloxane containing alkoxy groups are methyltrimethoxysilane, methyltriethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, n-propyltrimethoxysilane, n-propyltriethoxysilane, phenyltrimethyltriloxililoxyliloxyliloxyliloxyliloxyliloxyliloxyliloxyliloxyliloxyliloxysilane, phenyltrimethylaniloxyliloxyliloxyliloxysilane -3- aminopropyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3- glycidoxypropyltriethoxysilane, 3-mercaptopropyltrimethoxysilane, 3- mercaptopropyltriethoxysilane, tetraethoxys
- composition according to the invention also contains one or more condensation catalysts. These serve to catalyze the hydrolysis and condensation that takes place between the crosslinkable polydiorganylsiloxane and the crosslinker in the presence of moisture or water.
- the condensation catalyst can be any conventional catalyst used for these systems, and is preferably a metal catalyst.
- Metal catalysts can compounds or complexes of elements of groups 1, 2, 4, 12, 14 or 15 of the
- the condensation catalyst is preferably an organotin compound or a titanate or organotitanate.
- the is very particularly preferred Condensation catalyst is an organotin compound. These are commercially available. It is also possible and in certain cases even preferred to use mixtures of different catalysts.
- Preferred organotin compounds are dialkyltin compounds, e.g. selected from dimethyltin di-2-ethylhexanoate, dimethyltin dilaurate, di-n-butyltin diacetate, di-n-butyltin di-2-ethylhexanoate, di-n-butyltin dicaprylate, di-n-butyltin di-2,2-dimethyloctanoate, di-n-butyltin dilaurate, Di-n-butyltin distearate, di-n-butyltin diamine, di-n-butyltin dioleate, di-n-octyltin di-2-ethylhexanoate, di-n-octyltin di-2,2-dimethyloctanoate, di-n-octyltin diamine, di- n-octyltin dil
- Suitable organotin compounds can e.g. commercially available from TIB, Germany.
- titanates or organotitanates Compounds which have at least one ligand bonded to the titanium atom via an oxygen atom are referred to as titanates or organotitanates.
- Suitable ligands bonded to the titanium atom via an oxygen-titanium bond are, for example, those selected from an alkoxy group, sulfonate group, carboxylate group, dialkyl phosphate group, dialkyl pyrophosphate group and acetylacetonate group.
- Preferred titanates are e.g. Tetrabutyl or tetraisopropyl titanate.
- Titanates which are also suitable have at least one multidentate ligand, also called a chelate ligand.
- the multidentate ligand is a bidentate ligand.
- Suitable titanates for example, under the trade name Tyzor ® AA-105, PITA, TnBT, TPT, TOT, IAM, ibay commercially available from Dorf Ketal, India.
- Ranges vary. For example, this can be at least one
- the at least one crosslinker of the general formula (III) can be present, for example, in 0.1 to 8% by weight, preferably 0.3 to 5% by weight.
- a lower content of the at least one crosslinking agent of the general formula (III) can lead to an unfavorably short skin formation time and inadequate storage stability.
- the condensation catalyst can be present, for example, in 0.001 to 5% by weight, preferably 0.01 to 3% by weight.
- the silicone composition optionally has one or more fillers.
- the fillers can e.g. both theological properties of the uncured composition and the mechanical
- Influence composition It can be beneficial in one
- Composition to use different fillers Composition to use different fillers.
- composition according to the invention can e.g. Contain 10 to 70 wt .-%, preferably 10 to 50 wt .-% fillers.
- suitable fillers are inorganic or organic fillers, such as natural, ground or precipitated calcium carbonates or chalks, which are optionally surface-treated, e.g. with fatty acids, silicas, in particular pyrogenic silicas, which are optionally surface-treated, e.g. with silicone oils, aluminum hydroxides such as aluminum trihydroxide, carbon black, especially industrial carbon black, barium sulfate, dolomite, silica, kaolin, hollow spheres, quartz, calcined aluminum oxides, aluminum silicates, magnesium aluminum silicates, zirconium silicates,
- inorganic or organic fillers such as natural, ground or precipitated calcium carbonates or chalks, which are optionally surface-treated, e.g. with fatty acids, silicas, in particular pyrogenic silicas, which are optionally surface-treated, e.g. with silicone oils, aluminum hydroxides such as aluminum trihydroxide, carbon black, especially industrial carbon black, barium sulfate, dolomite
- Cristobalite flour diatomaceous earth, mica, titanium oxides, zirconium oxides, gypsum, graphite, carbon fibers, zeolites, or glass fibers, the surface of which
- composition according to the invention preferably does not contain any precipitated silica, since this has the storage stability of the composition
- composition according to the invention may optionally also contain further constituents, such as those used for moisture-curing,
- condensation-crosslinking silicone compositions are common.
- additional components are e.g. OH-terminated polydimethylsiloxanes, plasticizers, adhesion promoters, hardening accelerators, OH scavengers,
- Thixotropic agents processing aids, biocides, UV stabilizers, heat stabilizers, flame retardants, color pigments, odorants,
- Antistatic agents emulsifiers.
- silicone compositions according to the invention contain at least 90%, preferably at least 95%, particularly preferably
- polydiorganylsiloxanes of the general formula (I) based on the total mass of the polydiorganylsiloxane used.
- the weight ratio of polydiorganylsiloxanes of the general formula (I) to OH-terminated polydimethylsiloxanes is accordingly at least 9: 1, preferably at least 9.5: 0.5, particularly preferably at least 9.9: 0.1.
- plasticizers which may be used are trialkylsilyl-terminated polydimethylsiloxanes, the trialkylsilyl-terminated polydimethylsiloxanes preferably having a viscosity at 23 ° C. in the range from 1 to 10000 mPa s.
- Trimethylsilyl-terminated polydimethylsiloxanes are used in which some of the methyl groups have been replaced by other organic groups such as, for example, phenyl, vinyl or trifluoropropyl groups.
- the polydimethylsiloxane can also be monofunctional, i.e. one end is reactive, e.g. via a hydroxy end group.
- Hydrocarbons can also be used as plasticizers. Suitable hydrocarbons can e.g. under the trade name
- Hydroseal G 232 H can be purchased commercially from Total.
- adhesion promoters which may be used are amino alcohols such as triethanolamine or amine-containing polyols, which are commercially available, for example, under the Jeffamin® trade name.
- Silyl group-containing compounds which carry hydrolyzable radicals on the Si atom, in particular aminosilanes such as, for example, 3-aminopropyltrimethoxysilane, are assigned to the crosslinking agents of the general formula (III) since they are attached to the
- the curing accelerators which may be used are compounds which accelerate the crosslinking of the moisture-curing, condensation-crosslinking composition when they are used together with the
- inventive condensation catalysts are used.
- hardening accelerators examples include guanidines, in particular silylated guanidines or modified with guanidine groups
- Hardening accelerators containing alkoxysilyl groups also act as crosslinkers.
- Curing accelerators can be used in amounts of 0 to 5% by weight, preferably 0.01 to 2% by weight, based on the total weight of the
- moisture-curing composition can be added.
- Curing accelerator can consist of a single substance or a mixture of two or more substances.
- OH scavengers which may be used are compounds which react with any OH groups which may be present. OH groups can be present as unlocked chain ends of polydiorganylsiloxanes, as OH groups on fillers and as water. OH scavengers can be compounds containing Si-N. Examples of OH scavengers are hexamethyldisilazane (HMDS), hexamethylcyclotrisilazane, octamethyltetrasilazane, bis (trimethylsilyl) urea. HMDS is the most preferred OH scavenger.
- the components of the moisture-curing, condensation-crosslinking composition can be mixed with one another in the customary manner.
- the individual components are mixed in suitable mixing units, e.g. Forced mixers, planetary mixers, mixing tubes, kneaders, dissolvers or extruders intimately mixed together.
- suitable mixing units e.g. Forced mixers, planetary mixers, mixing tubes, kneaders, dissolvers or extruders intimately mixed together.
- the mixing can be carried out continuously or batchwise.
- the crosslinkable polydiorganylsiloxane of the general formula (I) according to the invention can be prepared in an upstream, spatially separated reaction, if appropriate temporarily stored and then metered into the mixing unit in a suitable amount.
- crosslinkable polydiorganylsiloxane of the general formula (I) directly in the mixing unit as described above and the other ingredients after completion of this preparation, without working up and / or temporarily storing the polydiorganylsiloxane of the general formula (I ), meter in and mix in.
- composition according to the invention can be a two-component composition consisting of a component A comprising a) the at least one crosslinkable polydiorganylsiloxane of the general formula (I)
- Components A and B of the two-component, moisture-curing composition are stored separately from one another for storage.
- Components A and B can be mixed in the usual way, for example by stirring component B) into component A), which can be done manually or using a suitable stirring device, for example using a static mixer, dynamic mixer, speed mixer, dissolver etc.
- Components can also be used for application or insertion from the separate storage containers, e.g. with gear pumps, pressed out and mixed.
- the mixing can e.g. in supply lines or nozzles for application or introduction or directly on the substrate or in the joint.
- composition according to the invention can be a one-component composition.
- composition according to the invention is a one-component
- composition according to the invention can be used as an adhesive or sealant in a method for gluing or grouting substrates.
- the method according to the invention comprises
- component B optionally mixing component B into component A to obtain a mixture
- step b) Application or introduction according to step b) is carried out.
- step a) can thus be carried out before or during the application or introduction in step b).
- the mixing should take place relatively shortly before further processing, since with the mixing of the The curing process begins.
- step a) is omitted when using an RTV-1 formulation.
- the application to a substrate or the introduction into a joint between substrates according to step b) can be carried out in the usual way, e.g. from Fland or in an automated process using robots.
- the substrate provided with the mixture is brought into contact with another substrate, possibly under pressure, in order to obtain an adhesive bond between the substrates.
- the mixture is then allowed to harden in step c), usually at room temperature, in order to achieve the bonding or disposition of the substrates.
- the adhesively bonded or jointed substrates according to the invention are obtained with the hardened mixture as an adhesive or sealing material.
- the substrates to be bonded or grouted can be made of the same or a different material. It can do all the usual
- Materials with the two-component composition according to the invention are glued or grouted.
- Preferred materials for gluing or grouting are glass, metals such as e.g. Aluminum, copper, steel or stainless steel, concrete, mortar, building blocks, e.g. Sandstone and lime sandstone, asphalt, bitumen, plastics, e.g. Polyolefins, PVC, Tedlar, PET,
- the two-component composition according to the invention can thus be used as an adhesive or sealant, e.g. in the areas of construction,
- Quantities are in phr (parts per hundred rubber) and refer to 100 parts by mass of the polydiorganylsiloxane. All tests were carried out at 23 ° C and 50% RH. (relative humidity).
- the one to be tested was used to determine the tide formation times (SOT)
- a Teflon wedge was used to determine the curing time.
- This wedge was made from a piece of Teflon measuring 340 x 30 x 30 mm.
- a wedge with a mass of 300 x 10 mm is milled out of the surface of this Teflon piece, this wedge being 20 mm deep at one end - the deep end and the other - the flat end tapering off with the surface of the Teflon piece.
- the slope in the wedge is constant from one end to the other. From the deep end, this wedge was filled with the composition to be tested. The surface was smoothed with a spatula. The hardening was checked by the hardened
- Composition was pulled out from the flat end of the wedge until Attachments to the bottom and / or walls of the wedge were visible. The depth of hardening was determined after 24h, 3d, 7d.
- the Shore A hardness was determined after 7d curing on a Shore A tester from Bareiss in accordance with DIN ISO 7619-1. Round specimens with a diameter of 42 mm and a thickness of 6 mm were produced to determine the Shore A hardness.
- compositions were knife-coated into skins of 2 mm thickness and cured for 7 d.
- the hardening with movement was measured according to the following method.
- the silicone compositions were applied in a joint measuring 120 ⁇ 20 ⁇ 20 mm in a stainless steel mold with a PE backfill cord (5 mm radius) which could be moved around the center.
- the substrates were not pre-treated. After smoothing the surfaces, the
- Neodecanoic acid neutralized The polymer obtained is stable in storage and can be used without further workup.
- Siloxane chains lead to inhomogeneous deep hardening and crack formation or
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP18190795 | 2018-08-24 | ||
| PCT/EP2019/072549 WO2020039057A1 (de) | 2018-08-24 | 2019-08-23 | Feuchtigkeitshärtende rtv-silikonzusammensetzung mit homogener tiefenhärtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3841179A1 true EP3841179A1 (de) | 2021-06-30 |
Family
ID=63491394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19755928.9A Pending EP3841179A1 (de) | 2018-08-24 | 2019-08-23 | Feuchtigkeitshärtende rtv-silikonzusammensetzung mit homogener tiefenhärtung |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20210179904A1 (de) |
| EP (1) | EP3841179A1 (de) |
| WO (1) | WO2020039057A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230323034A1 (en) * | 2020-08-31 | 2023-10-12 | Dow Silicones Corporation | Polydiorganosiloxane preparation |
| CN116285861A (zh) * | 2023-01-16 | 2023-06-23 | 深圳双键有机硅科技有限公司 | 一种可在低湿度环境中深度固化的双组分缩合型硅胶 |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE623601A (de) * | 1961-10-16 | 1900-01-01 | ||
| US4898910A (en) | 1988-09-26 | 1990-02-06 | Dow Corning Corporation | Modulus control in silicone sealant |
| US5266631A (en) * | 1991-06-13 | 1993-11-30 | Shin-Etsu Chemical Co., Ltd. | Process of producing room temperature curable organopolysiloxane composition |
| DE4207212A1 (de) | 1992-03-06 | 1993-09-09 | Bayer Ag | Verfahren zur herstellung von organyloxy-endgestoppten polysiloxanen |
| DE19533915A1 (de) | 1995-09-13 | 1997-03-20 | Bayer Ag | Verfahren zur Herstellung von Poly(diorganosiloxanen) mit Diorganyloxyorganylsilyl- oder Triorganylsilyl-Endgruppen, vernetzbare Mischungen, enthaltend Poly(diorganosiloxane) mit Diorganyloxyorganylsilyl- oder Triorganyloxysilyl-Endgruppen und deren Verwendung |
| EP0802222A1 (de) * | 1996-04-18 | 1997-10-22 | Dow Corning Corporation | Verfahren zur Verbesserung der Haftung von Silikonzusammensetzungen |
| EP1002837B1 (de) * | 1998-11-20 | 2003-06-11 | Dow Corning Toray Silicone Company, Ltd. | Bei Raumtemperatur härtbare Siliconkautschukzusammensetzung |
| US6127502A (en) | 1998-12-21 | 2000-10-03 | Dow Corning Corporation | Polyorganosiloxanes having at least one organofunctional group with multiple hydrolyzable groups |
| US6235832B1 (en) | 1998-12-21 | 2001-05-22 | Dow Corning Corporation | RTV silicone compositions with rapid development of green strength |
| US7271233B2 (en) * | 2001-05-30 | 2007-09-18 | Dow Corning Toray Silicone Co., Ltd. | Room-temperature-curable silicone rubber composition |
| JP2007106944A (ja) * | 2005-10-17 | 2007-04-26 | Shin Etsu Chem Co Ltd | 室温硬化性オルガノポリシロキサン組成物 |
| JP5500037B2 (ja) * | 2010-10-12 | 2014-05-21 | 信越化学工業株式会社 | 難燃性オルガノポリシロキサン組成物 |
| EP2604613A1 (de) | 2011-12-12 | 2013-06-19 | Sika Technology AG | Zink(II)-Komplexverbindungen als Katalysatoren für Polyurethan-Zusammensetzungen |
| WO2015193208A2 (de) | 2014-06-16 | 2015-12-23 | Sika Technology Ag | Vernetzungskatalysator mit siloxan-struktureinheiten |
| US10647681B2 (en) | 2015-06-22 | 2020-05-12 | Sika Technology Ag | Amidine catalyst for curable compositions |
| WO2018033563A1 (de) * | 2016-08-18 | 2018-02-22 | Sika Technology Ag | Siliconmischungen mit verbesserter weiterreissfestigkeit |
-
2019
- 2019-08-23 EP EP19755928.9A patent/EP3841179A1/de active Pending
- 2019-08-23 US US17/270,792 patent/US20210179904A1/en not_active Abandoned
- 2019-08-23 WO PCT/EP2019/072549 patent/WO2020039057A1/de not_active Ceased
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| US20210179904A1 (en) | 2021-06-17 |
| WO2020039057A1 (de) | 2020-02-27 |
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