EP2997074A1 - Katalysator zur synthese von siloxanen - Google Patents
Katalysator zur synthese von siloxanenInfo
- Publication number
- EP2997074A1 EP2997074A1 EP14732706.8A EP14732706A EP2997074A1 EP 2997074 A1 EP2997074 A1 EP 2997074A1 EP 14732706 A EP14732706 A EP 14732706A EP 2997074 A1 EP2997074 A1 EP 2997074A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- silane
- composition
- chosen
- azaphosphatrane
- catalyst
- 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.)
- Withdrawn
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 117
- -1 siloxanes Chemical class 0.000 title claims description 90
- 230000015572 biosynthetic process Effects 0.000 title claims description 5
- 238000003786 synthesis reaction Methods 0.000 title claims description 4
- 239000000203 mixture Substances 0.000 claims abstract description 91
- 238000000034 method Methods 0.000 claims abstract description 54
- 239000000463 material Substances 0.000 claims abstract description 38
- 230000008569 process Effects 0.000 claims abstract description 28
- 238000007151 ring opening polymerisation reaction Methods 0.000 claims abstract description 17
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229920000642 polymer Polymers 0.000 claims description 70
- 238000006243 chemical reaction Methods 0.000 claims description 60
- 150000001875 compounds Chemical class 0.000 claims description 48
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 40
- 229910000077 silane Inorganic materials 0.000 claims description 40
- 239000011541 reaction mixture Substances 0.000 claims description 26
- 125000004432 carbon atom Chemical group C* 0.000 claims description 25
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000002318 adhesion promoter Substances 0.000 claims description 22
- 239000004971 Cross linker Substances 0.000 claims description 21
- 125000000217 alkyl group Chemical group 0.000 claims description 20
- 239000001257 hydrogen Substances 0.000 claims description 19
- 229910052739 hydrogen Inorganic materials 0.000 claims description 19
- 125000003118 aryl group Chemical group 0.000 claims description 17
- 239000000945 filler Substances 0.000 claims description 17
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 claims description 17
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 16
- 229920002635 polyurethane Polymers 0.000 claims description 16
- 239000004814 polyurethane Substances 0.000 claims description 16
- UQEAIHBTYFGYIE-UHFFFAOYSA-N hexamethyldisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)C UQEAIHBTYFGYIE-UHFFFAOYSA-N 0.000 claims description 15
- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 claims description 15
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 14
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 claims description 14
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 10
- 150000001412 amines Chemical class 0.000 claims description 9
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 claims description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 8
- 229920000728 polyester Polymers 0.000 claims description 8
- 125000003545 alkoxy group Chemical group 0.000 claims description 7
- 125000002877 alkyl aryl group Chemical group 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 6
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 5
- 230000002378 acidificating effect Effects 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 125000004183 alkoxy alkyl group Chemical group 0.000 claims description 5
- 125000004103 aminoalkyl group Chemical group 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical group [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims description 5
- 229920001281 polyalkylene Polymers 0.000 claims description 5
- 239000004417 polycarbonate Substances 0.000 claims description 5
- 229920000515 polycarbonate Polymers 0.000 claims description 5
- 229920000098 polyolefin Polymers 0.000 claims description 5
- 239000004970 Chain extender Substances 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 4
- 125000003342 alkenyl group Chemical group 0.000 claims description 4
- 239000003610 charcoal Substances 0.000 claims description 4
- 229910052731 fluorine Inorganic materials 0.000 claims description 4
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 claims description 4
- ZWXYOPPJTRVTST-UHFFFAOYSA-N methyl-tris(prop-1-en-2-yloxy)silane Chemical compound CC(=C)O[Si](C)(OC(C)=C)OC(C)=C ZWXYOPPJTRVTST-UHFFFAOYSA-N 0.000 claims description 4
- 125000000008 (C1-C10) alkyl group Chemical group 0.000 claims description 3
- KXJLGCBCRCSXQF-UHFFFAOYSA-N [diacetyloxy(ethyl)silyl] acetate Chemical compound CC(=O)O[Si](CC)(OC(C)=O)OC(C)=O KXJLGCBCRCSXQF-UHFFFAOYSA-N 0.000 claims description 3
- TVJPBVNWVPUZBM-UHFFFAOYSA-N [diacetyloxy(methyl)silyl] acetate Chemical compound CC(=O)O[Si](C)(OC(C)=O)OC(C)=O TVJPBVNWVPUZBM-UHFFFAOYSA-N 0.000 claims description 3
- 125000002947 alkylene group Chemical group 0.000 claims description 3
- 239000012080 ambient air Substances 0.000 claims description 3
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 3
- 230000005587 bubbling Effects 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- OGZPYBBKQGPQNU-DABLZPOSSA-N (e)-n-[bis[[(e)-butan-2-ylideneamino]oxy]-methylsilyl]oxybutan-2-imine Chemical compound CC\C(C)=N\O[Si](C)(O\N=C(/C)CC)O\N=C(/C)CC OGZPYBBKQGPQNU-DABLZPOSSA-N 0.000 claims description 2
- SOIOCWRKKDYODY-UHFFFAOYSA-N 1-[dimethoxy(methyl)silyl]-1,3,3-trimethylurea Chemical compound CO[Si](C)(OC)N(C)C(=O)N(C)C SOIOCWRKKDYODY-UHFFFAOYSA-N 0.000 claims description 2
- HYJFCKNSOVNEDU-UHFFFAOYSA-N 1-[dimethoxy(methyl)silyl]-3,3-dimethyl-1-phenylurea Chemical compound CO[Si](C)(OC)N(C(=O)N(C)C)C1=CC=CC=C1 HYJFCKNSOVNEDU-UHFFFAOYSA-N 0.000 claims description 2
- VSIKJPJINIDELZ-UHFFFAOYSA-N 2,2,4,4,6,6,8,8-octakis-phenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane Chemical compound O1[Si](C=2C=CC=CC=2)(C=2C=CC=CC=2)O[Si](C=2C=CC=CC=2)(C=2C=CC=CC=2)O[Si](C=2C=CC=CC=2)(C=2C=CC=CC=2)O[Si]1(C=1C=CC=CC=1)C1=CC=CC=C1 VSIKJPJINIDELZ-UHFFFAOYSA-N 0.000 claims description 2
- VMAWODUEPLAHOE-UHFFFAOYSA-N 2,4,6,8-tetrakis(ethenyl)-2,4,6,8-tetramethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane Chemical compound C=C[Si]1(C)O[Si](C)(C=C)O[Si](C)(C=C)O[Si](C)(C=C)O1 VMAWODUEPLAHOE-UHFFFAOYSA-N 0.000 claims description 2
- WZJUBBHODHNQPW-UHFFFAOYSA-N 2,4,6,8-tetramethyl-1,3,5,7,2$l^{3},4$l^{3},6$l^{3},8$l^{3}-tetraoxatetrasilocane Chemical compound C[Si]1O[Si](C)O[Si](C)O[Si](C)O1 WZJUBBHODHNQPW-UHFFFAOYSA-N 0.000 claims description 2
- ZAEXPVSOLSDZRQ-UHFFFAOYSA-N [acetyloxy(dibutoxy)silyl] acetate Chemical compound CCCCO[Si](OC(C)=O)(OC(C)=O)OCCCC ZAEXPVSOLSDZRQ-UHFFFAOYSA-N 0.000 claims description 2
- NOZAQBYNLKNDRT-UHFFFAOYSA-N [diacetyloxy(ethenyl)silyl] acetate Chemical compound CC(=O)O[Si](OC(C)=O)(OC(C)=O)C=C NOZAQBYNLKNDRT-UHFFFAOYSA-N 0.000 claims description 2
- MCZCJVXEOMJCBE-UHFFFAOYSA-N [dimethyl(triacetyloxysilyloxy)silyl] acetate Chemical compound CC(=O)O[Si](C)(C)O[Si](OC(C)=O)(OC(C)=O)OC(C)=O MCZCJVXEOMJCBE-UHFFFAOYSA-N 0.000 claims description 2
- ADANNTOYRVPQLJ-UHFFFAOYSA-N [dimethyl(trimethylsilyloxy)silyl]oxy-[[dimethyl(trimethylsilyloxy)silyl]oxy-dimethylsilyl]oxy-dimethylsilane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C ADANNTOYRVPQLJ-UHFFFAOYSA-N 0.000 claims description 2
- YFCGDEUVHLPRCZ-UHFFFAOYSA-N [dimethyl(trimethylsilyloxy)silyl]oxy-dimethyl-trimethylsilyloxysilane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C YFCGDEUVHLPRCZ-UHFFFAOYSA-N 0.000 claims description 2
- BEIRWWZHJZKPCX-UHFFFAOYSA-N [phenyl-di(propanoyloxy)silyl] propanoate Chemical compound CCC(=O)O[Si](OC(=O)CC)(OC(=O)CC)C1=CC=CC=C1 BEIRWWZHJZKPCX-UHFFFAOYSA-N 0.000 claims description 2
- UBYDHPXTAIURJV-UHFFFAOYSA-N but-2-en-2-yloxy-dimethoxy-methylsilane Chemical compound CO[Si](C)(OC)OC(C)=CC UBYDHPXTAIURJV-UHFFFAOYSA-N 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- QIXFYORLWOFUQF-UHFFFAOYSA-N diisocyanato(dimethoxy)silane Chemical compound O=C=N[Si](OC)(OC)N=C=O QIXFYORLWOFUQF-UHFFFAOYSA-N 0.000 claims description 2
- MRGUOKJJTKDIIC-UHFFFAOYSA-N diisothiocyanato-methoxy-methylsilane Chemical compound S=C=N[Si](C)(OC)N=C=S MRGUOKJJTKDIIC-UHFFFAOYSA-N 0.000 claims description 2
- OQRBGEUZNWMSQN-UHFFFAOYSA-N dimethoxy-methyl-(1-phenylethenoxy)silane Chemical compound CO[Si](C)(OC)OC(=C)C1=CC=CC=C1 OQRBGEUZNWMSQN-UHFFFAOYSA-N 0.000 claims description 2
- CVQVSVBUMVSJES-UHFFFAOYSA-N dimethoxy-methyl-phenylsilane Chemical compound CO[Si](C)(OC)C1=CC=CC=C1 CVQVSVBUMVSJES-UHFFFAOYSA-N 0.000 claims description 2
- YTPNLBCMTSWLKJ-UHFFFAOYSA-N dimethoxy-methyl-prop-1-en-2-yloxysilane Chemical compound CO[Si](C)(OC)OC(C)=C YTPNLBCMTSWLKJ-UHFFFAOYSA-N 0.000 claims description 2
- FBZANXDWQAVSTQ-UHFFFAOYSA-N dodecamethylpentasiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C FBZANXDWQAVSTQ-UHFFFAOYSA-N 0.000 claims description 2
- 229940087203 dodecamethylpentasiloxane Drugs 0.000 claims description 2
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 2
- GBFVZTUQONJGSL-UHFFFAOYSA-N ethenyl-tris(prop-1-en-2-yloxy)silane Chemical compound CC(=C)O[Si](OC(C)=C)(OC(C)=C)C=C GBFVZTUQONJGSL-UHFFFAOYSA-N 0.000 claims description 2
- 125000000031 ethylamino group Chemical group [H]C([H])([H])C([H])([H])N([H])[*] 0.000 claims description 2
- NFVSFLUJRHRSJG-UHFFFAOYSA-N hexadecamethylheptasiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C NFVSFLUJRHRSJG-UHFFFAOYSA-N 0.000 claims description 2
- HTDJPCNNEPUOOQ-UHFFFAOYSA-N hexamethylcyclotrisiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O1 HTDJPCNNEPUOOQ-UHFFFAOYSA-N 0.000 claims description 2
- MAMPQFAGGHUOQJ-UHFFFAOYSA-N isocyanato-dimethoxy-methylsilane Chemical compound CO[Si](C)(OC)N=C=O MAMPQFAGGHUOQJ-UHFFFAOYSA-N 0.000 claims description 2
- OFYZZNNWQRYKHA-UHFFFAOYSA-N isothiocyanato-dimethoxy-methylsilane Chemical compound CO[Si](C)(OC)N=C=S OFYZZNNWQRYKHA-UHFFFAOYSA-N 0.000 claims description 2
- SBSPZXNNGHZVCR-UHFFFAOYSA-N n-[[acetyl(methyl)amino]-methoxy-methylsilyl]-n-methylacetamide Chemical compound CC(=O)N(C)[Si](C)(OC)N(C)C(C)=O SBSPZXNNGHZVCR-UHFFFAOYSA-N 0.000 claims description 2
- HDNXAGOHLKHJOA-UHFFFAOYSA-N n-[bis(cyclohexylamino)-methylsilyl]cyclohexanamine Chemical compound C1CCCCC1N[Si](NC1CCCCC1)(C)NC1CCCCC1 HDNXAGOHLKHJOA-UHFFFAOYSA-N 0.000 claims description 2
- HXTZZFBBMWUFFG-UHFFFAOYSA-N n-[bis[acetyl(methyl)amino]-methylsilyl]-n-methylacetamide Chemical compound CC(=O)N(C)[Si](C)(N(C)C(C)=O)N(C)C(C)=O HXTZZFBBMWUFFG-UHFFFAOYSA-N 0.000 claims description 2
- NCWLQWGQNUJBNB-UHFFFAOYSA-N n-[bis[benzoyl(methyl)amino]-methylsilyl]-n-methylbenzamide Chemical compound C=1C=CC=CC=1C(=O)N(C)[Si](C)(N(C)C(=O)C=1C=CC=CC=1)N(C)C(=O)C1=CC=CC=C1 NCWLQWGQNUJBNB-UHFFFAOYSA-N 0.000 claims description 2
- XIFOKLGEKUNZTI-UHFFFAOYSA-N n-[diethylamino(dimethyl)silyl]-n-ethylethanamine Chemical compound CCN(CC)[Si](C)(C)N(CC)CC XIFOKLGEKUNZTI-UHFFFAOYSA-N 0.000 claims description 2
- QREFMLYPZMSWJC-UHFFFAOYSA-N n-[dimethoxy(methyl)silyl]-n-methylacetamide Chemical compound CO[Si](C)(OC)N(C)C(C)=O QREFMLYPZMSWJC-UHFFFAOYSA-N 0.000 claims description 2
- ZWRBXRIQPXAXNU-UHFFFAOYSA-N n-[dimethoxy(methyl)silyl]propan-2-amine Chemical compound CO[Si](C)(OC)NC(C)C ZWRBXRIQPXAXNU-UHFFFAOYSA-N 0.000 claims description 2
- QULMGWCCKILBTO-UHFFFAOYSA-N n-[dimethylamino(dimethyl)silyl]-n-methylmethanamine Chemical compound CN(C)[Si](C)(C)N(C)C QULMGWCCKILBTO-UHFFFAOYSA-N 0.000 claims description 2
- LVUWSQRCEOBMRJ-UHFFFAOYSA-N n-[ethenyl(dimethoxy)silyl]methanamine Chemical compound CN[Si](OC)(OC)C=C LVUWSQRCEOBMRJ-UHFFFAOYSA-N 0.000 claims description 2
- PVRCBAPOFFYMJM-UHFFFAOYSA-N n-[ethyl(dimethoxy)silyl]-n-methylacetamide Chemical compound CC[Si](OC)(OC)N(C)C(C)=O PVRCBAPOFFYMJM-UHFFFAOYSA-N 0.000 claims description 2
- QSOQAXASUNBVLT-UHFFFAOYSA-N n-[methoxy-methyl-(methylamino)silyl]methanamine Chemical compound CN[Si](C)(NC)OC QSOQAXASUNBVLT-UHFFFAOYSA-N 0.000 claims description 2
- LHBDQZYSLUXAFT-UHFFFAOYSA-N n-ethyl-n-[ethyl(dimethoxy)silyl]propanamide Chemical compound CCC(=O)N(CC)[Si](CC)(OC)OC LHBDQZYSLUXAFT-UHFFFAOYSA-N 0.000 claims description 2
- WZXSAXDNMYMUBG-UHFFFAOYSA-N n-methyl-n-trimethoxysilylacetamide Chemical compound CO[Si](OC)(OC)N(C)C(C)=O WZXSAXDNMYMUBG-UHFFFAOYSA-N 0.000 claims description 2
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 claims description 2
- 229940008424 tetradecamethylhexasiloxane Drugs 0.000 claims description 2
- ZQZCOBSUOFHDEE-UHFFFAOYSA-N tetrapropyl silicate Chemical compound CCCO[Si](OCCC)(OCCC)OCCC ZQZCOBSUOFHDEE-UHFFFAOYSA-N 0.000 claims description 2
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 claims description 2
- JLGNHOJUQFHYEZ-UHFFFAOYSA-N trimethoxy(3,3,3-trifluoropropyl)silane Chemical compound CO[Si](OC)(OC)CCC(F)(F)F JLGNHOJUQFHYEZ-UHFFFAOYSA-N 0.000 claims description 2
- SDDVFEDYRCTTKO-UHFFFAOYSA-N trimethyl prop-1-en-2-yl silicate Chemical compound CO[Si](OC)(OC)OC(C)=C SDDVFEDYRCTTKO-UHFFFAOYSA-N 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 6
- 239000007983 Tris buffer Substances 0.000 claims 3
- 125000004181 carboxyalkyl group Chemical group 0.000 claims 2
- 125000005001 aminoaryl group Chemical group 0.000 claims 1
- 125000005026 carboxyaryl group Chemical group 0.000 claims 1
- 239000008393 encapsulating agent Substances 0.000 claims 1
- 125000000250 methylamino group Chemical group [H]N(*)C([H])([H])[H] 0.000 claims 1
- 125000000547 substituted alkyl group Chemical group 0.000 claims 1
- 238000013005 condensation curing Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000001723 curing Methods 0.000 description 19
- 150000004756 silanes Chemical class 0.000 description 19
- 238000006116 polymerization reaction Methods 0.000 description 18
- 229920001296 polysiloxane Polymers 0.000 description 18
- 150000007513 acids Chemical class 0.000 description 15
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 14
- 239000002253 acid Substances 0.000 description 14
- 238000001816 cooling Methods 0.000 description 13
- 229930195733 hydrocarbon Natural products 0.000 description 13
- 239000003921 oil Substances 0.000 description 13
- 239000002904 solvent Substances 0.000 description 12
- 150000002430 hydrocarbons Chemical class 0.000 description 11
- 239000000047 product Substances 0.000 description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 10
- 229920001577 copolymer Polymers 0.000 description 10
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 10
- 150000002148 esters Chemical class 0.000 description 9
- 150000002431 hydrogen Chemical class 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 229910052710 silicon Inorganic materials 0.000 description 9
- 125000001183 hydrocarbyl group Chemical group 0.000 description 7
- 239000012763 reinforcing filler Substances 0.000 description 7
- 239000004215 Carbon black (E152) Substances 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000006482 condensation reaction Methods 0.000 description 6
- 239000004205 dimethyl polysiloxane Substances 0.000 description 6
- 229920000620 organic polymer Polymers 0.000 description 6
- 229920002554 vinyl polymer Polymers 0.000 description 6
- 239000004593 Epoxy Chemical group 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 4
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 4
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 4
- 125000001931 aliphatic group Chemical group 0.000 description 4
- 125000003277 amino group Chemical group 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 4
- 238000011067 equilibration Methods 0.000 description 4
- 125000001261 isocyanato group Chemical group *N=C=O 0.000 description 4
- 238000011068 loading method Methods 0.000 description 4
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 description 4
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- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- YENOLDYITNSPMQ-UHFFFAOYSA-N carboxysilicon Chemical compound OC([Si])=O YENOLDYITNSPMQ-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 125000001651 cyanato group Chemical group [*]OC#N 0.000 description 1
- 150000003997 cyclic ketones Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- AYOHIQLKSOJJQH-UHFFFAOYSA-N dibutyltin Chemical compound CCCC[Sn]CCCC AYOHIQLKSOJJQH-UHFFFAOYSA-N 0.000 description 1
- MAYIDWCWWMOISO-UHFFFAOYSA-N dichloro-bis(ethenyl)silane Chemical compound C=C[Si](Cl)(Cl)C=C MAYIDWCWWMOISO-UHFFFAOYSA-N 0.000 description 1
- VTEHVUWHCBXMPI-UHFFFAOYSA-N dichloro-bis(prop-2-enyl)silane Chemical compound C=CC[Si](Cl)(Cl)CC=C VTEHVUWHCBXMPI-UHFFFAOYSA-N 0.000 description 1
- YLJJAVFOBDSYAN-UHFFFAOYSA-N dichloro-ethenyl-methylsilane Chemical compound C[Si](Cl)(Cl)C=C YLJJAVFOBDSYAN-UHFFFAOYSA-N 0.000 description 1
- YCEQUKAYVABWTE-UHFFFAOYSA-N dichloro-methyl-prop-2-enylsilane Chemical compound C[Si](Cl)(Cl)CC=C YCEQUKAYVABWTE-UHFFFAOYSA-N 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- GAURFLBIDLSLQU-UHFFFAOYSA-N diethoxy(methyl)silicon Chemical compound CCO[Si](C)OCC GAURFLBIDLSLQU-UHFFFAOYSA-N 0.000 description 1
- ASGKDLGXPOIMTM-UHFFFAOYSA-N diethoxy-methyl-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](C)(OCC)OCC)CCC2OC21 ASGKDLGXPOIMTM-UHFFFAOYSA-N 0.000 description 1
- OTARVPUIYXHRRB-UHFFFAOYSA-N diethoxy-methyl-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](C)(OCC)CCCOCC1CO1 OTARVPUIYXHRRB-UHFFFAOYSA-N 0.000 description 1
- PKTOVQRKCNPVKY-UHFFFAOYSA-N dimethoxy(methyl)silicon Chemical compound CO[Si](C)OC PKTOVQRKCNPVKY-UHFFFAOYSA-N 0.000 description 1
- CIQDYIQMZXESRD-UHFFFAOYSA-N dimethoxy(phenyl)silane Chemical compound CO[SiH](OC)C1=CC=CC=C1 CIQDYIQMZXESRD-UHFFFAOYSA-N 0.000 description 1
- WERMRYHPOOABQT-UHFFFAOYSA-N dimethoxy-bis(prop-2-enyl)silane Chemical compound C=CC[Si](OC)(CC=C)OC WERMRYHPOOABQT-UHFFFAOYSA-N 0.000 description 1
- SLQTWNAJXFHMHM-UHFFFAOYSA-N dimethoxy-methyl-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](C)(OC)OC)CCC2OC21 SLQTWNAJXFHMHM-UHFFFAOYSA-N 0.000 description 1
- XNMQEEKYCVKGBD-UHFFFAOYSA-N dimethylacetylene Natural products CC#CC XNMQEEKYCVKGBD-UHFFFAOYSA-N 0.000 description 1
- PWEVMPIIOJUPRI-UHFFFAOYSA-N dimethyltin Chemical class C[Sn]C PWEVMPIIOJUPRI-UHFFFAOYSA-N 0.000 description 1
- HGQSXVKHVMGQRG-UHFFFAOYSA-N dioctyltin Chemical class CCCCCCCC[Sn]CCCCCCCC HGQSXVKHVMGQRG-UHFFFAOYSA-N 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- NFDRPXJGHKJRLJ-UHFFFAOYSA-N edtmp Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CCN(CP(O)(O)=O)CP(O)(O)=O NFDRPXJGHKJRLJ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- NUFVQEIPPHHQCK-UHFFFAOYSA-N ethenyl-methoxy-dimethylsilane Chemical compound CO[Si](C)(C)C=C NUFVQEIPPHHQCK-UHFFFAOYSA-N 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229920001002 functional polymer Polymers 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- LCWMKIHBLJLORW-UHFFFAOYSA-N gamma-carene Natural products C1CC(=C)CC2C(C)(C)C21 LCWMKIHBLJLORW-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 125000001188 haloalkyl group Chemical group 0.000 description 1
- 125000004475 heteroaralkyl group Chemical group 0.000 description 1
- 125000001072 heteroaryl group Chemical group 0.000 description 1
- 125000004446 heteroarylalkyl group Chemical group 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- WDQDMOPZMLEJKT-UHFFFAOYSA-N isothiocyanatosilane Chemical compound [SiH3]N=C=S WDQDMOPZMLEJKT-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 150000003951 lactams Chemical class 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 125000005647 linker group Chemical group 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 125000005358 mercaptoalkyl group Chemical group 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- XJRBAMWJDBPFIM-UHFFFAOYSA-N methyl vinyl ether Chemical compound COC=C XJRBAMWJDBPFIM-UHFFFAOYSA-N 0.000 description 1
- QFWAHMAYYWUGTI-UHFFFAOYSA-N methyl-tris(prop-1-enoxy)silane Chemical compound CC=CO[Si](C)(OC=CC)OC=CC QFWAHMAYYWUGTI-UHFFFAOYSA-N 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- KBJFYLLAMSZSOG-UHFFFAOYSA-N n-(3-trimethoxysilylpropyl)aniline Chemical compound CO[Si](OC)(OC)CCCNC1=CC=CC=C1 KBJFYLLAMSZSOG-UHFFFAOYSA-N 0.000 description 1
- GKTNLYAAZKKMTQ-UHFFFAOYSA-N n-[bis(dimethylamino)phosphinimyl]-n-methylmethanamine Chemical compound CN(C)P(=N)(N(C)C)N(C)C GKTNLYAAZKKMTQ-UHFFFAOYSA-N 0.000 description 1
- XBFREHMGRPTPMU-UHFFFAOYSA-N n-[diacetamido(methyl)silyl]acetamide Chemical compound CC(=O)N[Si](C)(NC(C)=O)NC(C)=O XBFREHMGRPTPMU-UHFFFAOYSA-N 0.000 description 1
- UNNBXSCQSDJONV-UHFFFAOYSA-N n-[dibenzamido(methyl)silyl]benzamide Chemical compound C=1C=CC=CC=1C(=O)N[Si](NC(=O)C=1C=CC=CC=1)(C)NC(=O)C1=CC=CC=C1 UNNBXSCQSDJONV-UHFFFAOYSA-N 0.000 description 1
- CHQGKZGNKCXMIG-UHFFFAOYSA-N n-[dimethoxy(methyl)silyl]methanamine Chemical compound CN[Si](C)(OC)OC CHQGKZGNKCXMIG-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
- FRDNYWXDODPUJV-UHFFFAOYSA-N n-ethyl-2-methyl-3-trimethoxysilylpropan-1-amine Chemical compound CCNCC(C)C[Si](OC)(OC)OC FRDNYWXDODPUJV-UHFFFAOYSA-N 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 229910017464 nitrogen compound Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 150000002843 nonmetals Chemical class 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- NJGCRMAPOWGWMW-UHFFFAOYSA-N octylphosphonic acid Chemical compound CCCCCCCCP(O)(O)=O NJGCRMAPOWGWMW-UHFFFAOYSA-N 0.000 description 1
- 150000001282 organosilanes Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 description 1
- 150000003009 phosphonic acids Chemical class 0.000 description 1
- XRBCRPZXSCBRTK-UHFFFAOYSA-N phosphonous acid Chemical class OPO XRBCRPZXSCBRTK-UHFFFAOYSA-N 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000003495 polar organic solvent Substances 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920002859 polyalkenylene Polymers 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- 150000005374 primary esters Chemical class 0.000 description 1
- 125000004368 propenyl group Chemical group C(=CC)* 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 125000002577 pseudohalo group Chemical group 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 238000007348 radical reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 230000001850 reproductive effect Effects 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 150000008028 secondary esters Chemical class 0.000 description 1
- 150000004819 silanols Chemical class 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- IYMSIPPWHNIMGE-UHFFFAOYSA-N silylurea Chemical compound NC(=O)N[SiH3] IYMSIPPWHNIMGE-UHFFFAOYSA-N 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 150000003606 tin compounds Chemical class 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 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 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- HKFSBKQQYCMCKO-UHFFFAOYSA-N trichloro(prop-2-enyl)silane Chemical compound Cl[Si](Cl)(Cl)CC=C HKFSBKQQYCMCKO-UHFFFAOYSA-N 0.000 description 1
- FRGPKMWIYVTFIQ-UHFFFAOYSA-N triethoxy(3-isocyanatopropyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCN=C=O FRGPKMWIYVTFIQ-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
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 description 1
- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea group Chemical group NC(=O)N XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229920006163 vinyl copolymer Polymers 0.000 description 1
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical class [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 239000011787 zinc oxide Substances 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
- 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
- C08G77/06—Preparatory processes
- C08G77/08—Preparatory processes characterised by the catalysts used
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/547—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
- C07F9/6561—Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom containing systems of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring or ring system, with or without other non-condensed hetero rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/5399—Phosphorus bound to nitrogen
-
- 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
- C08G77/045—Polysiloxanes containing less than 25 silicon atoms
Definitions
- the present invention relates to methods of forming siloxanes using an azaphosphatrane material as a catalyst.
- the azaphosphatranes can be used in ring opening polymerization reactions and as a condensation cure catalyst.
- Cyclic siloxanes are often used as starting monomers to form poly siloxanes.
- polysiloxanes can be formed by the ring opening polymerization of cyclic siloxanes and a suitable end-capping unit. The reaction is carried out in the presence of a catalyst.
- alkali metal hydroxides examples are alkali metal hydroxides, alkali metal alkoxides or complexes of alkali metal hydroxides and an alcohol, alkali metal silanolates, and phosphonitrile halides (sometimes referred to as acidic phosphazenes).
- Such polymerizations can be carried out in bulk, in solvents (such as non-polar or polar organic solvents) or in emulsion.
- Phosphazene bases and carbenes have been described as suitable catalyst for the ring opening polymerization of siloxanes.
- An endblocking agent may be used to regulate the molecular weight of the polymer and/or to add functionality.
- Polymerisation may be terminated by using a neutralizing agent which reacts with the catalyst to render it non-active. In most cases catalyst residues remain in the polymer product and are desirably removed, such as by filtration.
- Solid type catalysts can be used as a catalyst to synthesize polydimethylsiloxane (PDMS) fluids and PDMS functional fluids by ring opening polymerization.
- Solid type catalysts exhibit high catalytic activity, but generate solid waste. The solid waste is typically incinerated. Additionally, the solid waste contains a significant fraction of the product, which decreases the overall yield and can increase production costs.
- Curable compositions such as moisture curable compositions also employ catalysts to promote curing and formation of the polymer network.
- Metal catalysts are typically used as condensation cure catalysts to accelerate the moisture-assisted curing of polyorganosiloxanes and non-silicone polymers having reactive terminal silyl groups in room temperature vulcanizing compositions.
- Organotin such as dibutyltindilaurate (DBTDL)
- DBTDL dibutyltindilaurate
- Environmental regulatory agencies and directives have increased or are expected to increase restrictions on the use of organotin compounds in formulated products. For example, while formulations with greater than 0.5 wt. % dibutyltin presently require labeling as toxic with reproductive IB classification, dibutyltin- containing formulations are proposed to be completely phased out in consumer applications during the next four to six years.
- organotin compounds such as dioctyltin compounds and dimethyltin compounds can only be considered as a short-term remedial plan, as these organotin compounds may also be regulated in the future.
- substitutes for organotin catalysts should exhibit properties similar to organotin compounds in terms of curing, storage, and appearance.
- Non-tin catalysts would also desirably initiate the condensation reaction of the selected polymers and complete this reaction upon the surface and may be in the bulk in a desired time schedule. There are therefore many proposals for the replacement of organometallic tin compounds with other metal-based compounds.
- Non-metal catalysts are also of interest. Therefore, there is still a need to address the limitations of possible metal compounds as suitable catalysts for condensation cure reactions. The physical properties of uncured and cured compositions also warrant examination, in particular to maintain the ability to adhere onto the surface of several substrates.
- the present invention provides compositions, methods, and processes to form polysiloxanes and to promote the curing of curable siloxane compositions.
- the present invention provides a process to form polysiloxanes by the ring opening polymerization of cyclo siloxane s.
- the process comprises contacting a cyclosiloxane with an azaphosphatrane.
- azaphosphatrane is of the formula:
- the azaphosphatrane is present in an amount of from about 0.05 weight percent to about 5 weight percent based on the total weight of the cyclosiloxane; even from about 0.1 weight percent to about 0.4 weight percent based on the total weight of the cyclosiloxane.
- the process comprises deactivating the catalyst.
- deactivating the catalyst comprises: heating the product of the process at a temperature of about 100 °C or greater after the reaction; treating the product with water; bubbling carbon dioxide through the product; treating the product with a material to neutralize the catalyst, or a combination of two or more thereof.
- the process further comprises filtering the reaction mixture. [0014] In another embodiment, the process further comprises treating the filtered reaction mixture with charcoal.
- the present invention provides a curable composition and methods of forming such compositions comprising a catalyst comprising an azaphosphatrane.
- the present invention provides a composition for forming a cured polymer composition comprising:
- azaphosphatrane is of the formula:
- the present invention provides, in one aspect, a process for the ring opening polymerization of cyclosiloxanes.
- the method comprises contacting a cyclosiloxane with an azaphosphatrane material.
- azaphosphatrane materials can be suitable for catalyzing the ring-opening polymerization of cyclosiloxanes.
- the reaction can be carried out in a suitable solvent.
- the reaction can also be carried out in the presence of water to the extent that the catalytic activity of the catalyst does not deteriorate.
- the azaphosphatrane material can be chosen from a compound of the
- R 9 , R 10 , and R 11 are independently chosen from hydrogen, a linear or branched alkyl comprising 1 to 10 carbon atoms, and an aromatic group comprising 6 to 12 carbon atoms, and a substituted phosphorous group with or without nitrogen;
- A is chosen from hydrogen, R 12 , or where R 12 , R 13 , and R 14 are independently chosen from hydrogen, a linear or branched alkyl comprising 1 to 10 carbon atoms, and an aromatic group comprising 6 to 12 carbon atoms; and t is 1 to 10.
- Suitable alkyl groups include, but are not limited to, methyl, ethyl, propyl, butyl, pentyl, hexyl, octyl, isopropyl, isobutyl, etc.
- Suitable aromatic groups include, but are not limited to phenyl, benzyl, naphthyl, etc.
- the azaphosphatrane compound can be chosen from a compound of Formulas (2)-(4
- the azaphosphatrane material is chosen from a compound of Formulas (2) -(4) where R 9 , R 10 , and R 11 are chosen from methyl, isopropyl, isobutyl, or a combination of two or more thereof.
- azaphosphatrane materials can be used as the catalyst material in the ring opening polymerization process.
- the polymerization can be carried out in bulk or in the presence of a solvent.
- Suitable solvents are liquid hydrocarbons or silicone fluids.
- the azaphosphatrane catalyst can be diluted in a hydrocarbon solvent, such as hexane or heptane, or dispersed in a silicone fluid such as polydiorganosiloxanes. Where the azaphosphatrane catalyst is initially in a solvent such as hexane, the hexane can be removed by evaporation under vacuum, and the catalyst dispersed in a silicone fluid to give a stable clear solution.
- the reaction can include water, but of a concentration that will not result in deactivation or deterioration of the catalyst.
- the polymerization reaction can be carried out at ambient temperature or under heating. Generally, heating can be carried out up to about 100°C.
- the catalyst can facilitate the reaction at lower temperatures. The catalysts tend to decompose when heated above 100°C.
- the method comprises heating the reaction system to a temperature above 100°C, after the reaction is complete, to decompose and remove the catalyst from the system. This eliminates the neutralization step typically required with conventional catalysts.
- the time taken for polymerization will depend on the activity of the catalyst in the chosen system, and on the desired polymer product.
- the azaphosphatrane catalysts are sufficiently active to convert cyclosiloxanes, such as D4, to high molecular weight polysiloxane gums within a few hours.
- the starting material is a cyclosiloxane (also known as a cyclic siloxane).
- Cyclic siloxanes are useful and commercially available materials. They have the general formula (R 15 R 16 SiO) n , wherein R 15 and R 16 are independently chosen from an alkyl, alkenyl, aryl, alkaryl, or aralkyl group having up to 8 carbon atoms, which may be unsubstituted or substituted, and n denotes an integer with a value of from 3 to 12.
- R 15 and R 16 can be substituted, e.g., by halogen such as fluorine or chlorine.
- the alkyl group can be, for example, methyl, ethyl, n-propyl, trifluoropropyl, n-butyl, sec-butyl, and tert-butyl.
- the alkenyl group can be, for example, vinyl, allyl, propenyl, and butenyl.
- the aryl and aralkyl groups can be, for example, phenyl, tolyl, and benzoyl.
- At least 80% of all R 15 and R 16 groups are methyl or phenyl groups. In one embodiment, substantially all R 15 and R 16 groups are methyl groups.
- R 15 and R 16 are methyl
- the value of n can be from 3 to 6, and in one embodiment is 4 or 5.
- suitable cyclic siloxanes are octamethyl cyclotetrasiloxane (D4), hexamethylcyclotrisiloxane (D3), octaphenylcyclotetrasiloxane, tetramethylcyclotetrasiloxane, tetramethyltetravinylcyclotetrasiloxane, hexamethyl-l,l-diphenylcyclotetrasiloxane, decamethyl pentacyclosiloxane, cyclopenta (methylvinyl) siloxane, and cyclotetra(phenylmethyl) siloxane.
- One particularly suitable commercially available material is a mixture of octamethylcyclo-te
- the reaction mixture comprises two or more cyclic siloxanes. In one embodiment, the reaction mixture comprises a mixture of at least two cyclic siloxanes of different ring sizes. In one embodiment, at least one of the cyclic siloxanes comprises one or more functional groups chosen from vinyl, amine, etc.
- the process can further comprise adding an endblocker material.
- the endblocker material is generally not limited and can be chosen as desired for a particular purpose or end use.
- the endblocker material is chosen from hexamethyldisiloxane; octamethyltrisiloxane; decamethyltetrasiloxane; dodecamethylpentasiloxane; tetradecamethylhexasiloxane; hexadecamethylheptasiloxane, or a combination of two or more thereof.
- the reaction mixture is generally purged with inert gas, preferably nitrogen, prior to addition of the catalyst so as to remove any dissolved CO2. Because of the extremely rapid reaction, the reaction mixture is vigorously mixed to ensure homogenous dispersion of the catalyst. Inadequate mixing can result in the catalyst being encapsulated in beads of gum as it is added to the reaction, and the catalyst then takes some time to diffuse out of the gum particles, giving a slower reaction.
- inert gas preferably nitrogen
- the azaphosphatrane catalyst can be present in an amount of from about
- the azaphosphatrane catalyst is present in an amount of from about 0.1 weight percent to about 0.4 weight percent based on the weight of the cyclosiloxane material.
- the method can further comprise deactivating the catalyst.
- Deactivating the catalyst can comprise removing the catalyst from the reaction system. In one embodiment, deactivating the catalyst can be accomplished by heating the reaction system to a temperature of about 100 °C or greater. In one embodiment, the catalyst can be deactivated by heating the reaction system to a temperature of about 110 °C or greater; 120 °C or greater; even 130 °C or greater.
- the catalyst can also be deactivated by treating the reaction system with water, bubbling carbon dioxide through the system; and/or treating with an agent to neutralize the azaphosphatrane compound. Suitable acids to neutralize the catalyst include, but are not limited to mineral acids and ion exchange resins. It will be appreciated that one or more of the above deactivation operations can be employed to deactivate the catalyst.
- the present catalysts provide an advantage over other types of catalysts such as acidic clay that require filtering the clay particles dispersed in the reaction medium.
- the reaction system can be treated as desired or necessary to remove any color present in the system.
- treatments can include filtering the sample such as through a celite bed, treating with charcoal, etc.
- compositions comprising azaphosphatrane materials can exhibit good curing properties as compared to compositions employing organotin compounds, such as DBTDL, in terms of accelerating moisture-assisted condensation curing of silicones to result in cross- linked silicones that can be used as sealants and RTVs (Room -Temperature Vulcanized Rubber).
- organotin compounds such as DBTDL
- RTVs Room -Temperature Vulcanized Rubber
- the present invention provides a curable composition
- a curable composition comprising a polymer component (A) comprising a reactive terminal silyl group; a crosslinker component (B); a catalyst component (C) comprising an azaphosphatrane compound; optionally an adhesion promoter component (D); an optional filler component (E); optionally an acidic compound (F), and optionally auxiliary components (G).
- the polymer component (A) may be a liquid- or solid-based polymer having a reactive terminal silyl group.
- the polymer component (A) is not particularly limited and may be chosen from any silyl cross-linkable polymer as may be desired for a particular purpose or intended use.
- suitable polymers for the polymer component (A) include polyorganosiloxanes (Al) or organic polymers free of siloxane bonds (A2), wherein the polymers (Al) and (A2) comprise reactive terminal silyl groups.
- the polymer component (A) may be present in an amount of from about 10 to about 90 wt. % of the curable composition.
- the curable composition comprises about 100 pt. wt. of the polymer component (A).
- the polymer component (A) may include a wide range of polyorganosiloxanes.
- the polymer component may comprise one or more polysiloxanes and copolymers of formula (5):
- R 1 may be chosen from linear or branched alkyl, linear or branched heteroalkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, linear or branched aralkyl, linear or branched heteroaralkyl, or a combination of two or more thereof.
- R 1 may be chosen from Ci-Cio alkyl; Ci-Cio alkyl substituted with one or more of CI, F, N, O, or S; phenyl; C7-C16 alkylaryl; C7-C16 arylalkyl; C2-C20 polyalkylene ether; or a combination of two or more thereof.
- Exemplary preferred groups are methyl, trifluoropropyl, and/or phenyl groups.
- R 2 may be a group reactive to protic agents such as water.
- exemplary groups for R 2 include OH, alkoxy, alkoxyalkyl, alkenyloxy, alkyloximo, alkylcarboxy, arylcarboxy, alkylamido, arylamido, or a combination of two or more thereof.
- R 2 is chosen from OH, Ci-Cs alkoxy, C2-C18 alkoxyalkyl, amino, alkenyloxy, alkyloximo, alkylamino, arylamino, alkylcarboxy, arylcarboxy, alkylamido, arylamido, alkylcarbamato, arylcarbamato, or a combination of two or more thereof.
- Z may be a bond, a divalent linking unit selected from the group of O, hydrocarbons which can contain one or more O, S, or N atom, amide, urethane, ether, ester, urea units or a combination of two or more thereof. If the linking group Z is a hydrocarbon group, then Z is linked to the silicon atom over a silicon-carbon bond. In one embodiment, Z is chosen from a Ci-Ci4 alkylene.
- X is chosen from a polyurethane; a polyester; a polyether; a polycarbonate; a polyolefin; a polyester ether; and a polyorganosiloxane having units of R1 ⁇ 2SiOi/2, R1 ⁇ 2SiO, R ! SiOa ⁇ , and/or S1O2, where R 1 is defined as above.
- X may be a divalent or multivalent polymer unit selected from the group of siloxy units linked over oxygen or hydrocarbon groups to the terminal silyl group comprising the reactive group R 2 as described above, polyether, polyalkylene, polyisoalkylene, polyester, or polyurethane units linked over hydrocarbon groups to the silicon atom comprising one or more reactive groups R 2 as described above.
- the hydrocarbon group X can contain one or more heteroatoms such as N, S, O, or P forming amides, esters, ethers, urethanes, esters, and/or ureas.
- the average polymerization degree (P n ) of X should be more than 6, e.g.
- n is 0 to 100; desirably 1, and c is 0 to 2, desirably 0 to 1.
- Non-limiting examples of the components for unit X include polyoxyalkylene polymers such as poly oxy ethylene, polyoxypropylene, polyoxybutylene, polyoxyethylene-polyoxypropylene copolymer, polyoxytetramethylene, or polyoxypropylene-polyoxybutylene copolymer; ethylene- propylene copolymer, polyisobutylene, polychloroprene, polyisoprene, polybutadiene, copolymer of isobutylene and isoprene, copolymers of isoprene or butadiene and acrylonitrile and/or styrene, or hydrocarbon polymers such as hydrogenated poly olefin polymers produced by hydrogenating these poly olefin polymers; polyester polymer manufactured by a condensation of dibasic acid such as adipic acid or phthalic acid and glycol, or ring-opening polymerization of lactones; polyacrylic acid ester produced by radical poly
- Particularly suitable polymers include, but are not limited to, polysiloxanes, polyoxyalkylenes, saturated hydrocarbon polymers such as polyisobutylene, hydrogenated polybutadiene and hydrogenated polyisoprene, or polyethylene, polypropylene, polyesters, polycarbonates, polyurethanes, polyurea polymers and the like.
- saturated hydrocarbon polymer, polyoxyalkylene polymer, and vinyl copolymer are particularly suitable due to their low glass transition temperature which provide a high flexibility at low temperatures, i.e., below 0 °C.
- the reactive silyl groups in formula (5) can be introduced by employing silanes containing a functional group which has the ability to react by known methods with unsaturated hydrocarbons via hydrosilylation, or reaction of SiOH, aminoalkyl or -aryl, HOOC-alkyl or -aryl, HO-alkyl or -aryl, HS-alkyl or -aryl, Cl(0)C-alkyl or -aryl, epoxyalkyl or epoxycycloalkyl groups in the prepolymer to be linked to a reactive silyl group via condensation or ring-opening reactions.
- Examples of the main embodiments include the following: (i) siloxane prepolymers having a SiOH group that can undergo a condensation reaction with a silane (LG)SiR 1 c R 2 3 c whereby a siloxy bond ⁇ Si-0- SiR 1 c R 2 3-c is formed while the addition product of the leaving group (LG) and hydrogen is released (LG-H); (ii) silanes having an unsaturated group that is capable of reacting via hydrosilylation or radical reaction with a SiH group or radically activated groups of a silane such as SiH or an unsaturated group; and (iii) silanes including organic or inorganic prepolymers having OH, SH, amino, epoxy, -COC1, -COOH groups, which can react complementarily with epoxy, isocyanato, OH, SH, cyanato, carboxylic halogenides, reactive alkylhalogenides, lactones, lactams, or amines, that is to link the reactive prep
- Silanes suitable for method (i) include alkoxysilanes, especially tetraalkoxysilanes, di- and trialkoxysilanes, di- and triacetoxysilanes, di- and triketoximosilanes, di- and trialkenyloxysilanes, di- and tricarbonamidosilanes, wherein the remaining residues at the silicon atom of the silane are substituted or unsubstituted hydrocarbons.
- silanes for method (i) include alkyltrialkoxysilanes, such as vinyltrimethoxysilane, methyltrimethoxysilane, propyltrimethoxysilane, aminoalkyltrimethoxysilane, ethyltriacetoxysilane, methyl- or propyltriacetoxysilane, methyltributanonoximosilane, methyltripropenyloxysilane, methyltribenzamidosilane, or methyltriacetamidosilane.
- alkyltrialkoxysilanes such as vinyltrimethoxysilane, methyltrimethoxysilane, propyltrimethoxysilane, aminoalkyltrimethoxysilane, ethyltriacetoxysilane, methyl- or propyltriacetoxysilane, methyltributanonoximosilane, methyltripropenyloxysilane, methyltribenzamidosilane, or
- Prepolymers suitable for reaction under method (i) are SiOH-terminated polyalkylsiloxanes, which can undergo a condensation reaction with a silane having hydrolyzable groups attached to the silicon atom.
- Exemplary SiOH-terminated polyalkyldisiloxanes include polydimethylsiloxanes .
- Suitable silanes for method (ii) include alkoxysilanes, especially trialkoxysilanes (HSi(OR)3) such as trimethoxysilane, triethoxysilane, methyldiethoxysilane, methyldimethoxysilane, and phenyldimethoxysilane. Hydrogenchlorosilanes are in principle possible but are less desirable due to the additional replacement of the halogen through an alkoxy, acetoxy group, etc.
- Other suitable silanes include organofunctional silanes having unsaturated groups which can be activated by radicals, such as vinyl, allyl, mercaptoalkyl, or acrylic groups.
- Non-limiting examples include vinyltrimethoxysilane, mercaptopropyltrimethoxysilane, and methacryloxypropyltrimethoxysilane.
- Prepolymers suitable for reaction under method (ii) include vinyl-terminated polyalkylsiloxanes, preferably polydimethylsiloxanes, hydrocarbons with unsaturated groups which can undergo hydrosilylation or can undergo radically induced grafting reactions with a corresponding organofunctional group of a silane comprising, for example, unsaturated hydrocarbon or a SiH group.
- Another method for introducing silyl groups into hydrocarbon polymers can be the copolymerization of unsaturated hydrocarbon monomers with the unsaturated groups of silanes.
- the introduction of unsaturated groups into a hydrocarbon prepolymer may include, for example, the use of alkenyl halogenides as chain stopper after polymerization of the silicon free hydrocarbon moiety.
- Desirable reaction products between the silanes and prepolymers include the following structures:
- Suitable silanes for method (iii) include, but are not limited to, alkoxy silanes, especially silanes having organofunctional groups to be reactive to -OH, -SH, amino, epoxy, -COC1, or -COOH.
- these silanes have an isocyanatoalkyl group such as gamma-isocyanatopropyltrimethoxysilane, gamma- isocyanatopropylmethyldimethoxysilane, gamma-isocyanatopropyltriethoxysilane, gamma-glycidoxypropylethyldimethoxysilane, gamma- glycidoxypropyltrimethoxysilane, gamma-glycidoxypropyltriethoxysilane, beta-(3,4- epoxycyclohexyl)ethyltrimethoxysilane, beta-(3,4- epoxycyclohexyl) ethyltriethoxy silane, epoxylimonyltrimethoxysilane, N- (2 - aminoethyl)-aminopropyltrimethoxysilane, gamma-aminopropyl
- Examples of suitable prepolymers for a reaction under method (iii) include, but are not limited to, polyalkylene oxides having OH groups, preferably with a high molecular weight (M w , weight- average molecular weight > 6000 g/mol) and a polydispersity M w /M n of less than 1.6; urethanes having remaining NCO groups, such as NCO functionalized polyalkylene oxides, especially blocked isocyanates.
- Prepolymers selected from the group of hydrocarbons having -OH, -COOH, amino, epoxy groups, which can react complementarily with an epoxy, isocyanato, amino, carboxyhalogenide or halogenalkyl group of the corresponding silane having further reactive groups useful for the final cure.
- Suitable isocyanates for the introduction of a NCO group into a polyether may include toluene diisocyanate, diphenylmethane diisocyanate, or xylene diisocyanate, or aliphatic polyisocyanate such as isophorone diisocyanate, or hexamethylene diisocyanate.
- the polymerization degree of the unit X depends on the requirements of viscosity and mechanical properties of the cured product. If X is a polydimethylsiloxane unit, the average polymerization degree based on the number average molecular weight M n is preferably 7 to 5000 siloxy units, preferably 200 to 2000 units. In order to achieve a sufficient tensile strength of > 5 MPa, an average polymerization degree P n of > 250 is suitable whereby the polydimethylsiloxanes have a viscosity of more than 300 mPa.s at 25 °C. If X is a hydrocarbon unit other than a polysiloxane unit, the viscosity with respect to the polymerization degree is much higher.
- Examples of the method for synthesizing a polyoxyalkylene polymer include, but are not limited to, a polymerization method using an alkali catalyst such as KOH, a polymerization method using a metal-porphyrin complex catalyst such as a complex obtained by reacting an organoaluminum compound, a polymerization method using a composite metal cyanide complex catalyst disclosed, e.g., in U.S. Patent Nos. 3,427,256; 3,427,334; 3,278,457; 3,278,458; 3,278,459; 3,427,335; 6,696,383; and 6,919,293.
- group X is selected from hydrocarbon polymers, then polymers or copolymers having isobutylene units are particularly desirable due to its physical properties such as excellent weatherabihty, excellent heat resistance, and low gas and moisture permeability.
- Examples of the monomers include olefins having 4 to 12 carbon atoms, vinyl ether, aromatic vinyl compound, vinylsilanes, and allylsilanes.
- Examples of the copolymer component include 1-butene, 2-butene, 2 - methyl- 1-butene, 3-methyl-l- butene, pentene, 4-methyl-l-pentene, hexene, vinylcyclohexene, methyl vinyl ether, ethyl vinyl ether, isobutyl vinyl ether, styrene, alpha- methylstyrene, dimethylstyrene, beta-pinene, indene, and for example, but not limited to, vinyltrialkoxysilanes, e.g.
- vinyltrimethoxysilane vinylmethyldichlorosilane, vinyldimethylmethoxysilane, divinyldichlorosilane, divinyldimethoxysilane, allyltrichlorosilane, allylmethyldichlorosilane, allyldimethylmethoxysilane, diallyldichlorosilane, diallyldimethoxysilane, gamma-methacryloyloxypropyltrimethoxysilane, and gamma- methacryloyloxypropylmethyldimethoxysilane.
- siloxane-free organic polymers include, but are not limited to, silylated polyurethane (SPUR), silylated polyester, silylated poly ether, silylated polycarbonate, silylated polyolefins like polyethylene, polypropylene, silylated polyesterether and combinations of two or more thereof.
- SPUR silylated polyurethane
- the siloxane-free organic polymer may be present in an amount of from about 10 to about 90 wt. % of the composition or about 100 pt. wt.
- the polymer component (A) may be a silylated polyurethane (SPUR).
- SPUR silylated polyurethane
- Such moisture curable compounds are known in the art in general and can be obtained by various methods including (i) reacting an isocyanate- terminated polyurethane (PUR) prepolymer with a suitable silane, e.g., one possessing both hydrolyzable functionality at the silicon atom, such as, alkoxy, etc., and secondly active hydrogen-containing functionality such as mercaptan, primary or secondary amine, preferably the latter, etc., or by (ii) reacting a hydroxyl-terminated PUR (polyurethane) prepolymer with a suitable isocyanate-terminated silane, e.g., one possessing one to three alkoxy groups.
- PUR isocyanate- terminated polyurethane
- moisture- curable SPUR silane modified/terminated polyurethane obtained from reaction of isocyanate-terminated PUR prepolymer and reactive silane, e.g., aminoalkoxysilane
- silane e.g., aminoalkoxysilane
- U.S. Pat. Nos. 4,345,053; 4,625,012; 6,833,423; and published U.S. Patent Publication 2002/0198352 moisture-curable SPUR obtained from reaction of hydroxyl-terminated PUR prepolymer and isocyanatosilane.
- Other examples of moisture-curable SPUR materials include those described in U.S. Pat. No. 7,569,653, the disclosure of which is incorporated by reference in its entirety.
- the polymer component (A) may be a polymer of formula (3):
- R 1 , R 2 , Z, and c are defined as above with respect to formula (6);
- R is Ci-C-6 alkyl (an exemplary alkyl being methyl);
- x is 0 to about 10,000, in one embodiment from 11 to about 2500; and
- y is 0 to about 10,000; preferably 0 to 500.
- Z in a compound of formula (6) is a bond or a divalent Ci-C alkylene group, especially preferred is -C2H4-.
- the polymer component (A) may be a polyorganosiloxane of the formula (7):
- R 3 and R 4 can be identical or different on the same silicon atom and are chosen from hydrogen; C1-C10 alkyl; C1-C10 heteroalkyl, C3-C12 cycloalkyl; C2-C30 heterocycloalkyl; C6-C13 aryl; C7-C30 alkylaryl; C7-C30 arylalkyl; C4-C12 heteroaryl; C5-C30 heteroarylalkyl; C5-C30 heteroalkylaryl; C2-C100 polyalkylene ether; or a combination of two or more thereof.
- R 2 , c, x, and y are as defined above; d is 0, 1, or 2; e is 0, 1, or 2; and f is 0, 1, or 2.
- Non-limiting examples of suitable polysiloxane- containing polymers (Al) include, for example, silanol-stopped polydimethylsiloxane, silanol or alkoxy- stopped polyorganosiloxanes, e.g., methoxystopped polydimethylsiloxane, alkoxy- stopped polydimethylsiloxane-polydiphenylsiloxane copolymer, and silanol or alkoxy- stopped fluoroalkyl- substituted siloxanes such as poly(methyl 3,3,3-trifluoropropyl)siloxane and poly(methyl 3,3,3-trifluoropropyl)siloxane-polydimethyl siloxane copolymer.
- the polyorganosiloxane component (Al) may be present in an amount of about 10 to about 90 wt. % of the composition or 100 pt. wt.
- the polyorganosiloxane component has an average chain length in the range of about 10 to about 2500 siloxy units, and the viscosity is in the range of about 10 to about 500,000 mPa.s at 25 °C.
- the composition may include silyl-terminated organic polymers (A2) that are free of siloxane units, and which undergo curing by a condensation reaction comparable to that of siloxane containing polymers (Al).
- the organic polymers (A2) that are suitable as the polymer component (A) include a terminal silyl group.
- the terminal silyl group may be of the formula (8):
- R 1 , R 2 , and d are as defined above.
- the polysiloxane composition may further include a crosslinker or a chain extender as component (B).
- the crosslinker is of the formula (9):
- the crosslinker component may be a condensation product of formula (9) wherein one or more but not all R 2 groups are hydrolyzed and released in the presence of water and then intermediate silanols undergo a condensation reaction to give a Si-O-Si bond and water.
- the average polymerization degree can result in a compound having 2 to 10 Si units.
- the crosslinker is an alkoxysilane having a formula
- the crosslinker is an acetoxysilane having a formula (R 3 d(R 1 C02)4 dSi, wherein R 1 , R 3 , and d are defined as above.
- the crosslinker is an oximosilane having a formula where R 1 , R 3 , R 4 , and d are defined as above.
- crosslinker includes a compound including an additional reactive component having at least two hydrolysable groups and less than three silicon atoms per molecule not defined under (A).
- the crosslinker or chain extender may be chosen from an alkoxysilane, an alkoxysiloxane, an oximosilane, an oximosiloxane, an enoxysilane, an enoxysiloxane, an aminosilane, an aminosiloxane, a carboxysilane, a carboxysiloxane, an alkylamidosilane, an alkylamidosiloxane, an arylamidosilane, an arylamidosiloxane, an alkoxyaminosilane, an alkylarylaminosiloxane, an alkoxycarbamatosilane, an alkoxycarbamatosiloxane, an imidatosilane, a ureidosilane, an is
- cross-linkers include, but are not limited to, tetraethylorthosilicate (TEOS); methyltrimethoxysilane (MTMS); methyltriethoxysilane; vinyltrimethoxysilane; vinyltriethoxysilane; methylphenyldimethoxysilane; 3,3,3-trifluoropropyltrimethoxysilane; methyltriacetoxysilane; vinyltriacetoxysilane; ethyltriacetoxysilane; di- butoxydiacetoxysilane; phenyltripropionoxysilane; methyltris(methylethylketoximo)silane; vinyltris(methylethylketoximo)silane; 3,3,3- trifluoropropyltris(methylethylketoximo)silane; methyltris(isopropenoxy)silane; vinyltris(isopropenoxy)silane; and
- methyldimethoxy(acetaldoximo)silane methyldimethoxy(N-methylcarbamato)silane; ethyldimethoxy(N-methylcarbamato)silane; methyldimethoxyisopropenoxysilane; trimethoxyisopropenoxysilane; methyltriisopropenoxysilane; methyl dimethoxy(but-2- en-2-oxy)silane; methyldimethoxy(l-phenylethenoxy)silane; methyldimethoxy-2-(l- carboethoxypropenoxy)silane; methylmethoxydi(N-methylamino)silane; vinyl dimethoxy(methylamino) silane; tetra-N,N-diethylaminosilane; methyldimethoxy(methylamino)silane; methyltri(cyclohexylamino)silane; met hyldimethoxy(
- the crosslinker may be present in an amount from about 1 to about 10 wt. % of the composition or from about 0.1 to about 10 pt. wt. per 100 pt. wt. of the polymer component (A). In another embodiment, the crosslinker may be present in an amount from about 0.1 to about 5 pt. wt. per 100 pt. wt. of the polymer component (A).
- the crosslinker may be present in an amount from about 0.5 to about 3 pt. wt. per 100 pt. wt. of the polymer component (A).
- numerical values may be combined to form new or undisclosed ranges.
- Additional alkoxysilanes in an amount greater than 0.1 wt.% of component (A) that are not consumed by the reaction between the prepolymer Z'-X-Z' and which comprise additional functional groups selected from R 5 can also work as an adhesion promoter and are defined and counted under component (D).
- the curable compositions further comprise a catalyst (C) comprising an azaphosphatrane compound.
- the azaphosphatrane compound can be any suitable azaphosphatrane compound.
- the azaphosphatrane compound can be chosen from a compound of any of formulas (l)-(4) described above.
- the catalyst component (C) can comprise a plurality of azaphosphatrane compounds.
- the catalyst (C) comprises an azaphosphatrane compound of the formula (2).
- the catalyst component (C) comprising the azaphosphatrane compound
- (3, 4) can be present in the curable composition in an amount of from about 0.01 to about 7 parts per weight per 100 parts per weight of the polymer (A); from about 0.05 to about 5 parts per weight per 100 parts per weight of the polymer (A); from about 0.1 to about 2 parts per weigh per 100 parts per weight of the polymer (A); even from about 0.2 to about 1 parts per weight per 100 parts per weight of the polymer (A).
- numerical values may be combined to form new and non-disclosed ranges.
- the composition optionally includes an adhesion promoter component (D) that is different from component (A) or (B).
- the adhesion promoter (D) may be an organofunctional silane comprising the group R 5 , e.g., aminosilanes, and other silanes that are not identical to the silanes of component (B), or are present in an amount that exceeds the amount of silanes necessary for end capping the polymer (A).
- the amount of non-reacted silane (B) or (D) in the reaction for making (A) can be defined in that after the endcapping reaction the free silanes are evaporated at a higher temperature up to 200 °C and vacuum up to 1 mbar to be more than 0.1 wt.% of (A).
- the adhesion promoters can be added to promote adhesion of the resulting cured material to a variety of substrates.
- the azaphosphatrane catalyst materials can be utilized with a variety of adhesion promoters without loss in catalytic activity as has been found with some metal-based, non-tin catalysts.
- the combination of the adhesion promoter with the azaphosphatrane catalyst can provide a composition exhibiting improved curing characteristics compared to the azaphosphatranes compound alone.
- some selected amines can advantageously be added to fine tune the rate of the azaphosphatrane catalyzed condensation curing of silicone/non-silicone polymer containing reactive silyl groups, as desired.
- the composition comprises an adhesion promoter (D) comprising a group R 5 as described by the general formula (10):
- R 5 is E-(CR 3 2)h-W-(CH2)h-; R 1 , R 2 , and d are as described above; g is 1 or 2; d + g
- h 1 to 2; and h is 0 to 8, and may be identical or different.
- Non-limiting examples of suitable compounds include:
- the group E may be selected from either a group E 1 or E 2 .
- E 1 may be selected from a monovalent group comprising amine, -N3 ⁇ 4, -NHR, -(NHC2Hs) a NHR, ⁇ , halogen, pseudo pseudohalogen, unsaturated aliphatic group with up to 14 carbon atoms, epoxy-group-containing aliphatic group with up to 14 carbon atoms, cyanurate- containing group, and an isocyanurate-containing group.
- E 2 may be selected from a group comprising a di- or multivalent group consisting of amine, polyamine, cyanurate-containing, and an isocyanurate- containing group, sulfide, sulfate, phosphate, phosphite, and a polyorganosiloxane group, which can contain R 5 and R 2 groups;
- W is selected from the group consisting of a single bond, a heteroatomic group selected from -COO-, -0-, epoxy, -S-, -CONH-, -HN-CO-NH- units;
- R 3 is as defined above, R 1 may be identical or different as defined above, R 2 is defined as above and may be identical or different.
- component (D) include:
- component (D) examples include compounds of the formulas (7a- 71). Furthermore the formula (7b) of compounds (D) shall comprise compounds of the formula (7m):
- R, R 2 , R 5 , and d are as defined above; k is 0 to 6 (and in one embodiment desirably 0); b is as described above (in one embodiment desirably 0 to 5); and 1 + b ⁇ 10.
- R 5 is selected from:
- An exemplary group of adhesion promoters are selected from the group that consists of amino-group-containing silane coupling agents.
- the amino-group- containing silane adhesion promoter agent (D) is an acidic compound having a group containing a silicon atom bonded to a hydrolyzable group (hereinafter referred to as a hydrolyzable group attached to the silicon atom) and an amino group. Specific examples thereof include the same silyl groups with hydrolyzable groups described above. Among these groups, the methoxy group and ethoxy group are particularly suitable.
- the number of the hydrolyzable groups may be 2 or more, and particularly suitable are compounds having 3 or more hydrolyzable groups.
- adhesion promoter (D) examples include, but are not limited to N-(2-aminoethyl)aminopropyltrimethoxysilane, gamma- aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, bis(3- trimethoxysilypropyl)amine, N-phenyl-gamma-aminopropyltrimethoxysilane, triaminofunctionaltrimethoxysilane, gamma-aminopropylmethyldimethoxysilane, gamma-aminopropylmethyldiethoxysilane, methacryloxypropyltrimethoxysilane, methylaminopropyltrimethoxysilane, gamma-glycidoxypropylethyldimethoxysilane, gamma-glycidoxypropyltrimethoxysilane, gamma
- derivatives obtained by modifying them for example, amino -modified silyl polymer, silylated amino polymer, unsaturated aminosilane complex, phenylamino long-chain alkyl silane and aminosilylated silicone.
- amino-group-containing silane coupling agents may be used alone, or two or more kinds of them may be used in combination.
- the adhesion promoter (D) may be present in an amount of from about
- the adhesion promoter may be present in an amount of from about 0.15 to about 2.0 pt. wt. based on 100 parts of the polymer component (A). In another embodiment, the adhesion promoter may be present in an amount of from about 0.5 to about 1.5 pt. wt of the polymer component (A). This defines the amount of (D) in composition of (A) wherein the content of free silanes coming from the endcapping of polymer (A) is smaller than 0.1 wt.%.
- the present compositions may further include a filler component (E).
- the filler component(s) (E) may have different functions, such as to be used as reinforcing or semi-reinforcing filler, i.e., to achieve higher tensile strength after curing.
- the filler component may also have the ability to increase viscosity, establish pseudoplasticity/shear thinning, and demonstrate thixotropic behavior.
- Non- reinforcing fillers may act as volume extenders.
- the reinforcing fillers are characterized by having a specific surface area of more than 50 m 2 /g related BET- surface, whereby the semi-reinforcing fillers have a specific surface area in the range of 10-50 m 2 /g.
- So-called extending fillers have preferably a specific surface area of less than 10 m 2 /g according to the BET-method and an average particle diameter below 100 ⁇ .
- the semi-reinforcing filler is a calcium carbonate filler, a silica filler, or a mixture thereof.
- suitable reinforcing fillers include, but are not limited to, fumed silicas or precipitated silicas, which can be partially or completely treated with organosilanes or siloxanes to make them less hydrophilic and decrease the water content or control the viscosity and storage stability of the composition.
- These fillers are named hydrophobic fillers. Tradenames are Aerosil®, HDK®, Cab-O-Sil® etc.
- Suitable extending fillers include, but are not limited to, ground silicas (CeliteTM), precipitated and colloidal calcium carbonates (which are optionally treated with compounds such as stearate or stearic acid); reinforcing silicas such as fumed silicas, precipitated silicas, silica gels and hydrophobized silicas and silica gels; crushed and ground quartz, cristobalite, alumina, aluminum hydroxide, titanium dioxide, zinc oxide, diatomaceous earth, iron oxide, carbon black, powdered thermoplastics such as acrylonitrile, polyethylene, polypropylene, polytetrafluoroethylene and graphite or clays such as kaolin, bentonite or montmorillonite (treated/untreated), and the like.
- ground silicas CaliteTM
- precipitated and colloidal calcium carbonates which are optionally treated with compounds such as stearate or stearic acid
- reinforcing silicas such as fumed silicas, precipitated
- the type and amount of filler added depends upon the desired physical properties for the cured silicone/non- silicone composition.
- the filler may be a single species or a mixture of two or more species.
- the extending fillers can be present from about 0 to about 300 wt. % of the composition related to 100 parts of component (A).
- the reinforcing fillers can be present from about 5 to about 60 wt. % of the composition related to 100 parts of component (A), preferably 5 to 30 wt.%.
- the inventive compositions optionally comprise an acidic compound (F), which, in conjunction with the adhesion promoter and azaphosphatranes catalyst, can accelerate curing (as compared to curing in the absence of such compounds).
- the component (F) may be present in an amount of from about 0.01 to about 5 wt. % of the composition. In another embodiment 0.01 to about 8 parts per weight (pt. wt.) per 100 pt. wt. of component (A) are used, more preferably 0.02 to 3 pt. wt. per 100 pt. wt. of component (A) and most preferably 0.02 to 1 pt. wt. per 100 pt. wt. of component (A) are used.
- the acidic compounds (F) may be chosen from various phosphate esters, phosphonates, phosphites, phosphonites, sulfites, sulfates, pseudo halogenides, branched alkyl carboxylic acids, combinations of two or more thereof, and the like.
- the acidic compounds (F) may, in one embodiment, be useful as stabilizers in order to ensure a longer storage time when sealed in a cartridge before use in contact with ambient air.
- Especially alkoxy- terminated polysiloxanes can lose the ability to cure after storage in a cartridge and show decreased hardness under curing conditions. It may, therefore be useful to add compounds of the formula (11), which can extend storage time or ability to cure over months.
- R 6 is selected from the group of linear or branched and optionally substituted C1-C30 alkyl groups, linear or branched C5-C14 cycloalkyl groups, Ce-Ci4 aryl groups, C6-C31 alkylaryl groups, linear or branched C2-C30 alkenyl groups or linear or branched C1-C30 alkoxyalkyl groups, C4-C300 polyalkenylene oxide groups (polyethers), such as Marlophor® N5 acid, triorganylsilyl- and diorganyl (Ci- C8)-alkoxysilyl groups.
- the phosphates can include also mixtures of primary and secondary esters.
- Non-limiting examples of suitable phosphonates include 1- hydroxyethane-(l,l-diphosphonic acid) (HEDP), aminotris(methylene phosphonic acid) (ATMP), diethylenetriaminepenta(methylene phosphonic acid) (DTPMP), 1,2- diaminoethane-tetra(methylene phosphonic acid) (EDTMP), and phosphonobutanetricarboxylic acid (PBTC).
- HEDP 1- hydroxyethane-(l,l-diphosphonic acid)
- ATMP aminotris(methylene phosphonic acid)
- DTPMP diethylenetriaminepenta(methylene phosphonic acid)
- ETMP 1,2- diaminoethane-tetra(methylene phosphonic acid)
- PBTC phosphonobutanetricarboxylic acid
- R 7 is defined as R 6 or di- or mulitvalent hydrocarbons with one or more amino group.
- phosphonic acid compounds of the formula R 6 P(0)(OH)2 such as alkyl phosphonic acids preferably hexyl or octyl phosphonic acid.
- the acidic compound may be chosen from a mono ester of phosphoric acid of the formula (R 8 0)PO(OH)2; a phosphonic acid of the formula R 8 P(0)(OH)2; or a monoester of phosphorous acid of the formula (R 8 0)P(OH)2 where R 8 is a Ci-Cis alkyl, a C2-C20 alkoxyalkyl, phenyl, a C7-C12 alkylaryl, a C2-C4 polyalkylene oxide ester or its mixtures with diesters, etc.
- the acidic compound is a branched C4-C30 alkyl carboxylic acids, including C5-C19 acids with an alpha tertiary carbon, or a combination of two or more thereof.
- suitable compounds include, but are not limited to, VersaticTM Acid, lauric acid, and stearic acid.
- the acidic compound may be a mixture comprising branched alkyl carboxylic acids.
- the acidic compound is a mixture of mainly tertiary aliphatic Cio carboxylic acids.
- the acidic component (F) is added in a molar ratio of less than or equal to 1 with respect to catalyst (C). In embodiments, the acidic component (F) is added in a molar ratio of (F):(C) of 1:15 to 1:1.
- the curable composition may also include auxiliary substances (G) such as plastizers, pigments, stabilizers, anti- microbial agents, fungicides, biocides, and/or solvents.
- auxiliary substances such as plastizers, pigments, stabilizers, anti- microbial agents, fungicides, biocides, and/or solvents.
- Preferred plastizers for reactive polyorganosiloxanes (A) are selected from the group of polyorganosiloxanes having chain lengths of 10 to 300 siloxy units.
- solvents may have a role in assuring uniform dispersion of the catalyst, thereby altering curing speed.
- solvents include polar and non-polar solvents such as toluene, hexane, chloroform, methanol, ethanol, isopropyl alcohol, acetone, methylethyl ketone, dimethylformamide (DMF), dimethyl sulfoxide (DMSO), N- methylpyrrolidinone (NMP), and propylene carbonate.
- Water can be an additional component (G) to accelerate fast curing 2-part compositions RTV-2, whereby the water can be in one part of the 2 compositions.
- non-polar solvents include, but are not limited to, toluene, hexane, and the like if the solvents should evaporate after cure and application.
- the solvents include high-boiling hydrocarbons such as alkylbenzenes, phtalic acid esters, arylsulfonic acid esters, trialkyl- or triarylphosphate esters, which have a low vapor pressure and can extend the volume providing lower costs. Examples cited by reference may be those of U.S. 6,599,633; U.S. 4,312,801.
- the solvent can be present in an amount of from about 20 to about 99 wt. % of the catalyst composition.
- a composition in accordance with the present invention comprises: 100 pt. wt. polymer component (A); about 0.1 to about 10 pt. wt. crosslinker component (B); and about 0.01 to about 7 pt. wt. catalyst component (C).
- the composition further comprises from about 0.1 to about 5, in one embodiment 0.15 to 1 pt. wt., of an adhesion promoter component (D); about 0 to about 300 pt. wt. filler component (E); about 0.01 to about 7 pt. wt. of acidic compound (F); optionally 0 to about 15 pt. wt. component (G), where the pt. wt.
- the composition comprises the component (F) in an amount of from about 0.01 to about 1 pt. wt. per 100 pt. wt. of component (A). In still another embodiment, the composition comprises the catalyst (C) in an amount of from about 0.1 to about 0.8 wt. pt. per 100 wt. pt of component (A).
- the curable compositions may be provided as either a one-part composition or a two-part composition.
- a one-part composition refers to a composition comprising a mixture of the various components described above.
- a two-part composition may comprise a first portion and a second portion that are separately stored and subsequently mixed together just prior to application for curing.
- a two-part composition comprises a first portion (PI) comprising a polymer component (A) and a crosslinker component (B), and a second portion (P2) comprising the catalyst component (C) comprising an azaphosphatrane compound.
- the first and second portions may include other components (D) and/or (E) and/or (F) and/or (G) as may be desired for a particular purpose or intended use.
- the first portion (PI) may optionally comprise an adhesion promoter (D) and/or a filler (E)
- the second portion (P2) may optionally comprise auxiliary substances (G), a cure rate modifying component (F), and water (G).
- a two-part composition comprises (i) a first portion comprising the polymer component (A), optionally the filler component (E), and optionally the acidic compound (F); and (ii) a second portion comprising the crosslinker (B), the catalyst component (C), the adhesive promoter (D), and the acidic compound (F), where portions (i) and (ii) are stored separately until applied for curing by mixing of the components (i) and (ii).
- An exemplary two-part composition comprises: a first portion (i) comprising 100 pt. wt. of component (A), and 0 to 70 pt. wt. of component (E); and a second portion (ii) comprising 0.1 to 5 pt. wt. of at least one crosslinker (B); 0.01 to 4 pt. wt. of a catalyst (C); 0.1 to 2 pt. wt. of an adhesion promoter (D); and optionally, 0.02 to 1 pt. wt. component (F).
- the curable compositions may be used in a wide range of applications including as materials for sealing, mold making, glazing, proto-typing, as adhesives, as coatings, as joint seal between different materials, e.g., sealants between ceramic or mineral surfaces and thermoplastics, as paper release, as impregnation materials, and the like.
- the present composition may be used either as a one-part RTV-1 or as a two-part RTV-2 formulation that can adhere onto broad variety of metal, mineral, ceramic, rubber, or plastic surfaces. Examples
- Example 1 Octamethylcyclotetrasiloxane (100 gm, 0.3365 moles), and hexamethyldisiloxane (0.82 gm, 5.03 mmol) was taken in a round bottom flask fitted with a water cooling condenser. The catalyst isobutyl substituted azaphosphatrane (2) (0.1 gm, 0.292 mmol) was added. The reaction mixture was kept in an oil bath maintained at 100°C. Samples were taken periodically and the volatile content of the sample was recorded to monitor the extent of reaction. A volatile content of 69.1% was measured after 5h of reaction.
- Example 2 Octamethylcyclotetrasiloxane (100 gm, 0.3365 moles), and hexamethyldisiloxane (0.82 gm, 5.03 mmol) was taken in a round bottom flask fitted with a water cooling condenser. The catalyst isobutyl substituted azaphosphatrane (2) (0.4 gm, 1.168 mmol) was added. The reaction mixture was kept in an oil bath maintained at 100°C. Samples were taken periodically and the volatile content of the sample was recorded to monitor the extent of reaction. A volatile content of 16.2% was measured after 2h of reaction.
- Example 3 Octamethylcyclotetrasiloxane (100 gm, 0.3365 moles), and hexamethyldisiloxane (0.82 gm, 5.03 mmol) was taken in a round bottom flask fitted with a water cooling condenser. The catalyst methyl substituted azaphosphatrane (2) (0.4 gm, 1.85 mmol) was added. The reaction mixture was kept in an oil bath maintained at 100°C. Samples were taken periodically and the volatile content of the sample was recorded to monitor the extent of reaction. A volatile content of 51% was measured after 4h of reaction.
- Example 4 Octamethylcyclotetrasiloxane (20 gm, 0.067 moles), silanol terminated poly(dimethylsiloxane) (80 gm) and hexamethyldisiloxane (0.82 gm, 5.03 mmol) was taken in a round bottom flask fitted with a water cooling condenser. The catalyst isobutyl substituted azaphosphatrane (2) (0.4 gm, 1.16 mmol) was added. The reaction mixture was kept in an oil bath maintained at 100°C. Samples were taken periodically and the volatile content of the sample was recorded to monitor the extent of reaction. A volatile content of 14% was measured after lh of reaction.
- Example 5 Octamethylcyclotetrasiloxane (20 gm, 0.067 moles), silanol terminated poly(dimethylsiloxane) (80 gm) and hexamethyldisiloxane (0.82 gm, 5.03 mmol) was taken in a round bottom flask fitted with a water cooling condenser. The catalyst isobutyl substituted azaphosphatrane (2) (0.1 gm, 0.29 mmol) was added. The reaction mixture was kept in an oil bath maintained at 100°C. Samples were taken periodically and the volatile content of the sample was recorded to monitor the extent of reaction. A volatile content of 20% was measured after 3h of reaction.
- Example 6 Octamethylcyclotetrasiloxane (20 gm, 0.067 moles), silanol terminated poly(dimethylsiloxane) (80 gm) and hexamethyldisiloxane (0.82 gm, 5.03 mmol) was taken in a round bottom flask fitted with a water cooling condenser. The catalyst isobutyl substituted azaphosphatrane (2) (0.05 gm, 0.145 mmol) was added. The reaction mixture was kept in an oil bath maintained at 100°C. Samples were taken periodically and the volatile content of the sample was recorded to monitor the extent of reaction. A volatile content of 30% was measured after 3h of reaction.
- Example 7 Octamethylcyclotetrasiloxane (20 gm, 0.067 moles), silanol terminated poly(dimethylsiloxane) (80 gm) and hexamethyldisiloxane (0.82 gm, 5.03 mmol) was taken in a round bottom flask fitted with a water cooling condenser. The catalyst isobutyl substituted azaphosphatrane (2) (0.025 gm, 0.0725 mmol) was added. The reaction mixture was kept in an oil bath maintained at 100°C. Samples were taken periodically and the volatile content of the sample was recorded to monitor the extent of reaction. A volatile content of 28% was measured after 4h of reaction.
- Example 8 Octamethylcyclotetrasiloxane (100 gm, 0.3355 moles), and
- Example 9 Silanol terminated poly(dimethylsiloxane) (93 gm) and methyl terminated poly(dimethylsiloxane) (viscocity - lOOcst, 11.0 gm) was taken in a round bottom flask fitted with a water cooling condenser. The catalyst isobutyl substituted azaphosphatrane (2) (0.4 gm, 1.16 mmol) was added. The reaction mixture was kept in an oil bath maintained at 100°C. Samples were taken periodically and the volatile content of the sample was recorded to monitor the extent of reaction. A volatile content of 12.3% was measured after lh of reaction.
- Example 10 (Comparative Example): Octamethylcyclotetrasiloxane
- Example 11 (Comparative Example): Octamethylcyclotetrasiloxane
- Example 12 (Comparative Example): Octamethylcyclotetrasiloxane
- silanol terminated poly(dimethylsiloxane) 80 gm
- hexamethyldisiloxane hexamethyldisiloxane (0.82 gm, 5.03 mmol) was taken in a round bottom flask fitted with a water cooling condenser.
- 0.4 wt% of a base type catalyst was added and the reaction mixture was kept in an oil bath maintained at 100°C. Samples were taken periodically and the volatile content of the sample was recorded to monitor the extent of reaction. A volatile content of 9.8% was measured after 3h of reaction.
- Example 13 (Comparative Example): Octamethylcyclotetrasiloxane
- Table 1 Ring opening polymerization of siloxanes.
- the polymerization reached equilibration in 2-4 hours with the azaphosphatrane catalyst whereas the reaction took between 3-5 hours to reach equilibration with the acid and basic type catalysts at the same catalyst loading. This indicates that the cycle time can be lowered, in some instances by almost two times, with azaphosphatrane as the catalyst.
- the volatile content with each catalyst after polymerization is 11.6% to 13.7% with the acid type catalyst, 9.8% to 18.63% with the basic type catalyst, and 12.3 % to 69.1 % with the asaphosphatrane catalysts, respectively.
- Table 1 also shows that the polymerization can be carried out successfully with significantly lower catalyst loadings when using the asaphosphatrane material as the catalyst.
- the catalyst is deactivated in the system by heating the reaction system to a temperature greater than 120 °C.
- the samples are then treated by passing through a celite bed and then treating with charcoal to remove any yellow color from the product.
- Example 14 (Condensation cure) To 4.0 g of silanol terminated poly(dimethylsiloxane) and 0.5 g of methyltrimethoxysilane, varied amounts of isobutyl substituted azaphosphatrane (3) is added. The quantity is varied from 10 mg to 40 mg and is added as a neat material. The reaction mixture is kept at ambient room temperature to monitor curing. Cured material is formed.
- Example 15 (Condensation cure) To 4.0 g of silanol terminated poly(dimethylsiloxane) and 0.5 g of methyltrimethoxysilane, varied amounts of methyl substituted azaphosphatrane (3) is added. The quantity is varied from 10 mg to 40 mg and is added as a neat material. The reaction mixture is kept at ambient room temperature to monitor curing. Cured material is formed.
- Example 16 (Condensation cure) To 4.0 g of silanol terminated poly(dimethylsiloxane) and 0.5 g of methyltrimethoxysilane, varied amounts of isobutyl substituted azaphosphatrane (4) is added. The quantity is varied from 10 mg to 40 mg and is added as a neat material. The reaction mixture is kept at ambient room temperature to monitor curing. Cured material is formed.
- Example 15 (Condensation cure) To 4.0 g of silanol terminated poly(dimethylsiloxane) and 0.5 g of methyltrimethoxysilane, varied amounts of methyl substituted azaphosphatrane (4) is added. The quantity is varied from 10 mg to 40 mg and is added as a neat material. The reaction mixture is kept at ambient room temperature to monitor curing. Cured material is formed.
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