EP1532199A2 - Additif porogene pour mousse d elastomere silicone - Google Patents
Additif porogene pour mousse d elastomere siliconeInfo
- Publication number
- EP1532199A2 EP1532199A2 EP03756051A EP03756051A EP1532199A2 EP 1532199 A2 EP1532199 A2 EP 1532199A2 EP 03756051 A EP03756051 A EP 03756051A EP 03756051 A EP03756051 A EP 03756051A EP 1532199 A2 EP1532199 A2 EP 1532199A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- additive according
- mol
- additive
- polymer
- weight
- 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- Withdrawn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
- 239000000654 additive Substances 0.000 title claims abstract description 85
- 230000000996 additive effect Effects 0.000 title claims abstract description 78
- 239000006260 foam Substances 0.000 title claims abstract description 12
- 229920002379 silicone rubber Polymers 0.000 title claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 73
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229920000642 polymer Polymers 0.000 claims abstract description 15
- 150000002978 peroxides Chemical class 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 4
- 239000011707 mineral Substances 0.000 claims abstract description 4
- 239000004971 Cross linker Substances 0.000 claims abstract description 3
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 36
- -1 polypropylene Polymers 0.000 claims description 23
- 229920002323 Silicone foam Polymers 0.000 claims description 19
- 238000004132 cross linking Methods 0.000 claims description 19
- 239000000377 silicon dioxide Substances 0.000 claims description 17
- 239000000470 constituent Substances 0.000 claims description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 15
- 229920001577 copolymer Polymers 0.000 claims description 14
- 239000003054 catalyst Substances 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 13
- 229920001515 polyalkylene glycol Polymers 0.000 claims description 13
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 12
- 239000013514 silicone foam Substances 0.000 claims description 12
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 11
- 229920000570 polyether Polymers 0.000 claims description 11
- 125000002947 alkylene group Chemical group 0.000 claims description 9
- 239000002243 precursor Substances 0.000 claims description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- 125000000217 alkyl group Chemical group 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 6
- 150000001451 organic peroxides Chemical class 0.000 claims description 6
- 239000002562 thickening agent Substances 0.000 claims description 6
- 238000006459 hydrosilylation reaction Methods 0.000 claims description 5
- 239000012764 mineral filler Substances 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- 229920001400 block copolymer Polymers 0.000 claims description 4
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 4
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 3
- 229930195733 hydrocarbon Natural products 0.000 claims description 3
- 229920001451 polypropylene glycol Polymers 0.000 claims description 3
- 239000011118 polyvinyl acetate Substances 0.000 claims description 3
- WGGNJZRNHUJNEM-UHFFFAOYSA-N 2,2,4,4,6,6-hexamethyl-1,3,5,2,4,6-triazatrisilinane Chemical compound C[Si]1(C)N[Si](C)(C)N[Si](C)(C)N1 WGGNJZRNHUJNEM-UHFFFAOYSA-N 0.000 claims description 2
- ZBSKZKPSSKTLNE-UHFFFAOYSA-N 4-methylpent-3-enoxysilane Chemical compound CC(=CCCO[SiH3])C ZBSKZKPSSKTLNE-UHFFFAOYSA-N 0.000 claims description 2
- 239000005046 Chlorosilane Substances 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 229910008051 Si-OH Inorganic materials 0.000 claims description 2
- 229910006358 Si—OH Inorganic materials 0.000 claims description 2
- 150000005215 alkyl ethers Chemical class 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical class Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 150000002170 ethers Chemical class 0.000 claims description 2
- UQEAIHBTYFGYIE-UHFFFAOYSA-N hexamethyldisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)C UQEAIHBTYFGYIE-UHFFFAOYSA-N 0.000 claims description 2
- POPACFLNWGUDSR-UHFFFAOYSA-N methoxy(trimethyl)silane Chemical compound CO[Si](C)(C)C POPACFLNWGUDSR-UHFFFAOYSA-N 0.000 claims description 2
- 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 2
- 229920001281 polyalkylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000010453 quartz Substances 0.000 claims description 2
- IJOOHPMOJXWVHK-UHFFFAOYSA-N chlorotrimethylsilane Chemical compound C[Si](C)(C)Cl IJOOHPMOJXWVHK-UHFFFAOYSA-N 0.000 claims 2
- XSDCTSITJJJDPY-UHFFFAOYSA-N chloro-ethenyl-dimethylsilane Chemical compound C[Si](C)(Cl)C=C XSDCTSITJJJDPY-UHFFFAOYSA-N 0.000 claims 1
- YLJJAVFOBDSYAN-UHFFFAOYSA-N dichloro-ethenyl-methylsilane Chemical compound C[Si](Cl)(Cl)C=C YLJJAVFOBDSYAN-UHFFFAOYSA-N 0.000 claims 1
- JJQZDUKDJDQPMQ-UHFFFAOYSA-N dimethoxy(dimethyl)silane Chemical compound CO[Si](C)(C)OC JJQZDUKDJDQPMQ-UHFFFAOYSA-N 0.000 claims 1
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 claims 1
- 239000003517 fume Substances 0.000 claims 1
- 229920000151 polyglycol Polymers 0.000 claims 1
- 239000010695 polyglycol Substances 0.000 claims 1
- 239000005051 trimethylchlorosilane Substances 0.000 claims 1
- 239000006263 elastomeric foam Substances 0.000 abstract 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 15
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 11
- 229920002554 vinyl polymer Polymers 0.000 description 10
- 229910052697 platinum Inorganic materials 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 6
- 239000003112 inhibitor Substances 0.000 description 6
- QHGSGZLLHBKSAH-UHFFFAOYSA-N hydridosilicon Chemical compound [SiH] QHGSGZLLHBKSAH-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 4
- 235000013305 food Nutrition 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 4
- 229920002545 silicone oil Polymers 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 3
- 239000004604 Blowing Agent Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 125000004469 siloxy group Chemical group [SiH3]O* 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 238000006482 condensation reaction Methods 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 229920001821 foam rubber Polymers 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 150000002430 hydrocarbons Chemical group 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 125000005375 organosiloxane group Chemical group 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 238000003878 thermal aging Methods 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- WRXCBRHBHGNNQA-UHFFFAOYSA-N (2,4-dichlorobenzoyl) 2,4-dichlorobenzenecarboperoxoate Chemical compound ClC1=CC(Cl)=CC=C1C(=O)OOC(=O)C1=CC=C(Cl)C=C1Cl WRXCBRHBHGNNQA-UHFFFAOYSA-N 0.000 description 1
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- QYLFHLNFIHBCPR-UHFFFAOYSA-N 1-ethynylcyclohexan-1-ol Chemical compound C#CC1(O)CCCCC1 QYLFHLNFIHBCPR-UHFFFAOYSA-N 0.000 description 1
- DSCFFEYYQKSRSV-UHFFFAOYSA-N 1L-O1-methyl-muco-inositol Natural products COC1C(O)C(O)C(O)C(O)C1O DSCFFEYYQKSRSV-UHFFFAOYSA-N 0.000 description 1
- DMWVYCCGCQPJEA-UHFFFAOYSA-N 2,5-bis(tert-butylperoxy)-2,5-dimethylhexane Chemical compound CC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C DMWVYCCGCQPJEA-UHFFFAOYSA-N 0.000 description 1
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical class N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 238000004438 BET method Methods 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- 125000000882 C2-C6 alkenyl group Chemical group 0.000 description 1
- WNUQCODCURAIPP-UHFFFAOYSA-N C[SiH](Cl)C.C[Si](Cl)(Cl)C Chemical compound C[SiH](Cl)C.C[Si](Cl)(Cl)C WNUQCODCURAIPP-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- UDHXJZHVNHGCEC-UHFFFAOYSA-N Chlorophacinone Chemical compound C1=CC(Cl)=CC=C1C(C=1C=CC=CC=1)C(=O)C1C(=O)C2=CC=CC=C2C1=O UDHXJZHVNHGCEC-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910020175 SiOH Inorganic materials 0.000 description 1
- 229920004482 WACKER® Polymers 0.000 description 1
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical class [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000000655 anti-hydrolysis Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 229910014307 bSiO Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003060 catalysis inhibitor Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- DRVWBEJJZZTIGJ-UHFFFAOYSA-N cerium(3+);oxygen(2-) Chemical class [O-2].[O-2].[O-2].[Ce+3].[Ce+3] DRVWBEJJZZTIGJ-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- NYMPGSQKHIOWIO-UHFFFAOYSA-N hydroxy(diphenyl)silicon Chemical class C=1C=CC=CC=1[Si](O)C1=CC=CC=C1 NYMPGSQKHIOWIO-UHFFFAOYSA-N 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 231100001231 less toxic Toxicity 0.000 description 1
- 229920005684 linear copolymer Polymers 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 235000006748 manganese carbonate Nutrition 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- MKTNNHVTYGTNKH-UHFFFAOYSA-N methoxy-dimethyl-[(2-methylpropan-2-yl)oxy]silane Chemical compound CO[Si](C)(C)OC(C)(C)C MKTNNHVTYGTNKH-UHFFFAOYSA-N 0.000 description 1
- DNIAPMSPPWPWGF-UHFFFAOYSA-N monopropylene glycol Natural products CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 150000003961 organosilicon compounds Chemical class 0.000 description 1
- 150000002923 oximes Chemical class 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 150000003003 phosphines Chemical class 0.000 description 1
- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 description 1
- XRBCRPZXSCBRTK-UHFFFAOYSA-N phosphonous acid Chemical class OPO XRBCRPZXSCBRTK-UHFFFAOYSA-N 0.000 description 1
- 150000003057 platinum Chemical class 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920001521 polyalkylene glycol ether Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229960004063 propylene glycol Drugs 0.000 description 1
- 235000013772 propylene glycol Nutrition 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- ZVQXQPNJHRNGID-UHFFFAOYSA-N tetramethylsuccinonitrile Chemical compound N#CC(C)(C)C(C)(C)C#N ZVQXQPNJHRNGID-UHFFFAOYSA-N 0.000 description 1
- 239000003017 thermal stabilizer Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 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
- 230000009466 transformation Effects 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
- 235000004416 zinc carbonate Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/125—Water, e.g. hydrated salts
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
Definitions
- the present invention relates to a new pore-forming additive which can be used in particular in the manufacture of silicone foams. It also relates to the precursor compositions of silicone foam, comprising such a pore-forming additive, as well as the foam articles produced from these compositions.
- the AZO route is the most used, with ⁇ , ⁇ '-azoisobutyronitrile (US-A-5,019,295, EP-A-456,557).
- ⁇ , ⁇ '-azoisobutyronitrile US-A-5,019,295, EP-A-456,557.
- nitrogen is released, which will generate the cells within PEVC.
- toxic derivatives in particular tetramethyl succinonitrile, are also released.
- ⁇ , ⁇ '-azobisisobutyronitrile clearly less toxic, can also be used. However, these derivatives are more difficult to process, their effectiveness is lower and the foams after annealing are colored.
- the ⁇ . ⁇ '-azoisobutyronitrile remains the most effective blowing agent.
- one of the routes chosen is the use of a pore-forming additive with an aqueous base.
- the blowing agent is then water or more precisely water vapor.
- Patents US-A-4,189,545, US-A-4,613,630, EP-A-227,233 and US-A-5,332,762 describe the production of silicone foam by this route.
- US-A-5 332 762 describes a pore-forming additive formed from an emulsion of water and silicone oil in the presence of an emulsifier.
- This additive has several drawbacks. Incorporating silicone oil, the additive is sticky. In the form of an emulsion, it requires special processing means.
- the present invention therefore aims to provide a pore-forming additive using water as a pore-forming agent, which does not have the drawbacks of the prior art.
- a particular objective of the invention is to provide such an additive which makes it possible to produce silicone foams having a density suitable for the usual uses of these foams and comprising fine cells and uniformly distributed.
- Another object of the invention is to provide such an additive which does not stick, which is easily scored and easy to implement.
- Another objective is to provide such an additive which has a consistency close to that of the silicone composition, and can therefore be easily dispersed therein.
- Another object of the invention is to provide an additive which can be compatible with food contact use.
- the present invention therefore relates to a pore-forming composition or additive, making it possible to produce foams of silicone elastomers, forming a single phase and comprising:
- a consistency agent which is a water-soluble thermoplastic polymer, having a high molar mass by weight, in particular equal to or greater than 50,000 g / mol, preferably 100,000 g / mol, especially between 50 000 or 100 000 and 10 000 000 g / mol; and (4) optionally an agent promoting the dispersion of component (3) in water, which is preferably a liquid polymer soluble in water, having a low viscosity, in particular equal to or less than 5000 mPa.s at 25 ° C. .
- the pore-forming composition is not an emulsion, but a simple mixture of the above-mentioned constituents.
- the constituents (3) and (4) are introduced into the pore-forming base in the form of a premix of (3) in (4), which promotes the mixing of the constituent ( 3) in water (1).
- the water (1) can in particular be water of high purity, e.g. distilled water, deionized water, purified water or the like.
- the thickening agents (2) used are advantageously mineral oxides. These mineral oxides may or may not have reinforcing properties. It is preferably silica, alumina, quartz or a mixture of at least two of these constituents.
- As usable silicas we mainly target fillers characterized by a specific surface area by weight (measured according to BET methods) at least greater than 50 m 2 / g, generally between 50 and 300 m 2 / g and preferably between 100 and 200 m 2 / g.
- the silicas can be prepared pyrogenically (so-called combustion or smoke silicas) or by wet processes (precipitated silicas).
- the average size of the filler particles is in particular between 2 and 30 nm, preferably between 4 and 20 nm.
- silicas can preferably be incorporated as such or after having been treated with organosilicon compounds usually used for this use.
- organosilicon compounds usually used for this use.
- these compounds are methylpolysiloxanes such as hexamethyldisiloxane, octamethylcyclotetrasiloxane, methylpolysilazanes such as hexamethyldisilazane, hexamethylcyclotrisilazane, chlorosilanes such as dimethyldichlorosilane dimethylchlorosilane, trimethyl dimethyldimethoxysilane, dimethylvinylethoxysilane, trimethylmethoxysilane.
- the silicas can increase their starting weight up to a rate of 20%, especially around 10%.
- the consistency agent (3) is a water-soluble polymer providing consistency to the medium.
- it is chosen to give the final porogenic additive a consistency close to that of the silicone composition in which it is desired to incorporate it. It is preferably a polyalkylene glycol, a polyvinyl acetate, a polyalkylether, one of their derivatives, or a mixture of these polymers and / or derivatives.
- the alkylene groups are preferably C 2 , C or C.
- Polyethylene glycol are preferred, and more particularly polyethylene oxide or polyether glycol (eg called POLYOX®), obtained by polymerization of ethylene oxide.
- the polyalkylene glycol used are in particular those having a molar mass by weight greater than 100,000 g / mol, preferably between 100,000 g / mol and 10,000,000 g / mol and more preferably between 1,000,000 g / mol and 8,000 000 or 10 000 000 g / mol.
- POLYOX® polyethylene oxide sold by Union Carbide or Dow Chemical under the name POLYOX®, having a molar mass in accordance with the invention.
- copolymers of at least two polyalkylenes as described above in particular block copolymers and in particular of polypropylene glycol-polyethylene glycol block copolymers.
- those of these copolymers which have a molar mass by weight greater than 100,000 g / mol, preferably between 100,000 and 1,000,000 g / mol, are used.
- the polyvinyl acetates used in particular have a molar mass by weight greater than 100,000 g / mol, preferably between 100,000 and 500,000 g / mol.
- Polyalkyl ethers are compounds in which the alkyl units are preferably C 2 , C 3 or C 4 . Their molar mass is generally between 10,000 and 100,000 g / mol.
- the hydrocarbon radical of the polyether is in particular a linear or branched C 2 , C 3 or C 4 alkylene radical, preferably ethylene or isopropylene.
- the constituent (4) is a liquid polymer soluble in water, the viscosity of which at 25 ° C. is notably equal to or less than 5000 mPa.s, in particular between 1 and 5000 mPa.s, preferably between 10 and 4000 mPa.s, more preferably between 50 and 1000 mPa.s.
- Component (4) can in particular be: - an alkylene glycol, a polyalkylene glycol, or an ester or an ether of alkylene glycol or of polyalkylene glycol, or also an alkylene glycol copolymer
- alkylene groups (different alkylene groups), the alkylene groups preferably being C 2 ,
- polyether polysiloxane copolymer which is formed of a polysiloxane chain on which one or more polyether groups are grafted.
- the hydrocarbon radical of the polyether is in particular a linear or branched C 2 , C 3 or C 4 alkylene radical > preferably ethylene or isopropylene. It may, for example, be a polyether ethylene oxide-polysiloxane copolymer, of the type:
- n or else m being 0 a linear (poly) organosiloxane-alkylene glycol copolymer or branched, preferably a mono- or di-organosiloxane-alkylene glycol, the organosiloxane being preferably a dimethyl-, diethyl- or diphenyl-siloxane, the alkylene groups preferably being C 2 , C 3 or C, preferably ethylene or isopropylene,
- alkane diol in which the linear or branched carbon chain is preferably C ⁇ -C, for example 1, 2-propane diol,
- the preferred constituents (4) are polyalkylene glycol ethers, namely polyalkylene glycol alkyl ethers in which the alkyl groups, identical or different, linear or branched, are C 1 to C 13 , the alkylene groups preferably being C 2 , C 3 or C 4 .
- polypropylene glycol monobutyl ether of formula CH 9 -0 (C 3 H 6 ) n -OH, where the average number represented by n is such that the compound has a viscosity in accordance with invention, in particular about 400 mPa.s at 25 ° C; a compound of this type is marketed by Laporte Performance Chemicals, Southampton, UK, under the name BREOX® LUBRICANT B225.
- the amounts of components (1) to (3) can be:
- (1) 20 to 80% by weight and preferably 30 to 70%
- constituent (3) 1 to 20% by weight and preferably 2 to 10%
- constituent (4) is present, it is preferably present at a rate of 4 to 30 parts by weight, and more particularly from 8 to 20 parts by weight, per 100 parts of the sum of the constituents (1) to (3 ).
- the pore-forming additive can be incorporated into any one-component or two-component silicone composition to produce a silicone foam.
- Another object of the invention is therefore any precursor composition of silicone elastomer incorporating a pore-forming additive according to the invention.
- This composition can therefore generally comprise the reactive PolyOrganoSiloxane (POS) species or species (that is to say which will create the silicone elastomeric network by crosslinking) and the catalyst or any other crosslinking agent allowing this crosslinking.
- POS PolyOrganoSiloxane
- This additive is simply incorporated into these silicone elastomer precursor compositions, without requiring the addition of a surfactant to make the water of the additive compatible in the silicone phase. It is therefore not necessary either to use emulsification means.
- the consistency of the pore-forming additive is close to that of the silicone phase, which facilitates mixing. It is also non-sticky and breakable, which further facilitates its implementation. It does not make the silicone composition sticky incorporating it.
- the foams produced can thus have a density of between 0.3 and 0.7, especially between 0.45 and 0.6.
- the invention relates to silicone polyaddition compositions which can be vulcanized at room temperature RTV (and whose crosslinking can be accelerated when hot) and those called elastomers which are vulcanizable when hot EVC.
- RTV room temperature
- elastomers which are vulcanizable when hot EVC.
- compositions generally comprise at least one POS A carrying ethylenic and / or acetylenic unsaturation (s), at least one hydrogenated POS B and a hydrosilylation catalyst, optionally a mineral filler, eg as described above with regard to the pore-forming additive, compositions to which, according to the invention, a pore-forming additive as described above is added.
- POS A can in particular be formed from siloxyl units of formula:
- Y is a C 2 -C 6 alkenyl, preferably vinyl
- Z is a monovalent hydrocarbon group having no unfavorable action on the activity of the catalyst
- Z is generally chosen from alkyl groups having from 1 to 8 carbon atoms included such as methyl, ethyl, propyl and 3,3,3-trifluoropropyl and aryl groups such as xylyl, tolyl and phenyl, a is 1 or 2, b is 0, 1 or 2 and a + b is between 1 and 3, possibly all the other units being units of average formula:
- POS B can in particular be formed from siloxyl units of formula:
- W is a monovalent hydrocarbon group having no unfavorable action on the activity of the catalyst and corresponding to the same definition as Z, d is 1 or 2, e is 0, 1 or 2, d + a value between 1 and 3, possibly all the other units being units of average formula:
- g has a value between 0 and 3.
- POS A & B are for example respectively a polyorganovinylsiloxane and a polyorganohydrogensiloxane.
- the organic substituents other than the vinyl and hydrogen reactive groups are, for example, methyls or cyclohexyls.
- These hydrogenated M, D or each have one or more H or Vinyl, preferably only one.
- the number of SiH or SiVi units per molecule is preferably greater than or equal to 2. This can in particular represent from 0.01% to 10% (preferably 0.1 to 2%) of vinyl by weight for POS A and of 0.001% to 5% (preferably 0.05 to 2%) of hydrogen by weight for POS B.
- Suitable POS B are polymethylhydrogensiloxanes with ends - Si (CH 3 ) 3 and polydimethylsiloxanes with ends - Si (CH 3 ) 2 H, methylhydrogenodimethylsiloxanes copolymers with ends - Si (CH 3 ) H, methylhydrogenomethyloctylsiloxanes copolymers, and polymers methylhydrogenocyclosiloxanes
- POS A & B have an average molecular weight between 1.10 2 and 1.10 7 (g / mol).
- POS A this includes in particular, in terms of dynamic viscosity at 25 ° C: o in the case of silicone compositions which can be vulcanized hot (EVC) by polyaddition, POS A having in particular a viscosity at least equal to 5.10 5 mPa.
- POS A having in particular a viscosity preferably comprised 1.10 4 and 5.10 5 mPa.s, and o in the case of silicone compositions vulcanizable at room temperature (vulcanization being accelerated while hot) by polyaddition or RTV, POS A having in particular a viscosity of between 100 and 10 4 mPa.s , preferably between 1000 and 5000 mPa.s.
- the POS B generally have a viscosity between 10 and 10,000 mPa.s, preferably between 50 and 1000 mPa.s.
- the viscosities are measured using a BROOKFIELD viscometer according to the indications of standard AFNOR NFT 76 106 of May 1982. These viscosities correspond to a quantity of dynamic viscosity at 25 ° C called “Newtonian", i.e. the dynamic viscosity which is measured, from in a manner known per se, at a sufficiently low shear speed gradient so that the viscosity measured is independent of the speed gradient.
- Newtonian i.e. the dynamic viscosity which is measured, from in a manner known per se, at a sufficiently low shear speed gradient so that the viscosity measured is independent of the speed gradient.
- the filler incorporated into these silicone compositions is preferably a silica, in particular a silica as described with regard to the pore-forming additive.
- a subject of the invention is therefore these silicone compositions which are precursors of foam elastomer, crosslinking by a hydrosilylation reaction and comprising:
- the POS A and B are in quantities such that a ratio between the SiH and the SiVi is ensured, in particular between 0.5 and 10, preferably 1 and 6.
- the catalyst is present in particular at a rate of 0.5 to 250 ppm, preferably from 1 to 50 ppm.
- the pore-forming additive is present in particular at a rate of 0.5 to 10 parts by weight, preferably from 1 to 8 parts by weight, per 100 parts of POS A.
- Hydrosilylation catalysts are well known to those skilled in the art. These are generally platinum complexes, in particular the platinum / unsaturated siloxane complexes, in particular the platinum / vinylsiloxane complexes, in particular those obtained by reaction between a platinum halide and an unsaturated organosilicon material such as an unsaturated silane or a unsaturated siloxane, eg according to the teaching of US-A-3,775,452 to which a person skilled in the art can refer. Preference is given to the Karstedt solution or complex, as described in US-A-3,775,452.
- a catalyst inhibitor in order to delay crosslinking.
- the inhibitor when one is used, can be used to from 0.0001 to 5 parts by weight, preferably 0.001 to 3 parts by weight, per 100 parts of POS A.
- Phosphines, phosphites and phosphonites also form part of the inhibitors which can be used in the invention. Mention may in particular be made of the compounds of formula P (OR) 3 in US-A-6 300 455, and in particular those of formula
- R 1 , R 2 , R 3 , R 4 and R 5 may be the same or different and these radicals do not all represent H.
- inhibitors are added in an amount by weight of between 1 and 50,000 ppm relative to the weight of the total silicone composition, in particular between 10 and 10,000 ppm, preferably between 20 and 2,000 ppm.
- the invention relates to monocomponent polyorganosiloxane compositions called EVC peroxide.
- EVC peroxide monocomponent polyorganosiloxane compositions called EVC peroxide.
- These compositions generally comprise at least one POS A carrying ethylenic and / or acetylenic unsaturation (s), at least one organic peroxide as crosslinking agent, and preferably a mineral filler, eg as described above with regard to the pore-forming additive, compositions to which a pore-forming additive according to the invention is added.
- these compositions comprise at least one POS A of the type described above for the polyaddition compositions, having a viscosity greater than or equal to 500,000 mPa.s, in particular between 500,000 and 1.10 e , more particularly between 1.10 6 and 5.10 7 mPa.s.
- Organic peroxides are well known to those skilled in the art and more particularly include benzoyl peroxide, 2,4-dichloro-benzoyl peroxide, dicumyl peroxide, bis (t-butylperoxy) -2,5 2,5-dimethyl 2,5 hexane, t-butyl perbenzoate, t-butyl and isopropyl peroxy carbonate, di-t-butyl peroxide, bis (t-butylperoxy) -1, 1-trimethyl-3,3,5 cyclohexane.
- the mineral filler incorporated into these silicone compositions is preferably a silica, in particular a silica as described with regard to the pore-forming additive.
- the pore-forming additive is present in particular at a rate of 0.5 to 10 parts by weight, preferably from 1 to 8 parts by weight, per 100 parts of POS A.
- the subject of the invention is therefore a silicone composition with peroxide, a precursor of foam elastomer, comprising:
- compositions can comprise:
- a gum which is a homopolymer or a linear copolymer having on average per molecule at least 2 vinyl groups linked to different silicon atoms, located in the chain and / or at the chain ends, of which the organic radicals linked to the silicon atoms are chosen from methyl, ethyl and phenyl radicals, at least 60 mol% of these other radicals (and preferably all of these other radicals) being methyl radicals;
- siliceous filler (s) per 100 parts by weight of gum (A).
- Organic peroxides are generally used in an amount of 0.1 to 7 parts, preferably 0.2 to 5 parts, per 100 parts of POS or gums A.
- the polyaddition or peroxide compositions can also comprise other usual additives.
- thermal stabilizers such as iron or cerium oxides and the salts of fatty acid and cerium
- flame retardants such as manganese or zinc carbonates and smoked titanium dioxide
- pigments such as red iron oxide, titanium dioxide and carbon black
- silicone oils such as dimethylsiloxane and methylphenylsiloxane oils
- antioxidants additives for improving the electrical properties
- additives stabilizers.
- the compositions according to the invention comprise hollow particles of polymer or thermoplastic resin, eg according to EP-A-1 149 871 and US-A-6 300 384.
- These particles can be formed from a shell containing air or an inert gas, eg air, nitrogen, helium.
- the concept of resin includes silicone, acrylate and polycarbonate resins. These resins preferably have a softening point between 40 and 200 ° C, especially between 60 and 180 ° C.
- the particles can have an average size of between 0.1 and 500 ⁇ m, more particularly between 1 and 50 ⁇ m.
- These particles can be incorporated in an amount of 0.01 to 50, in particular 0.1 to 40, parts by weight per 100 parts of POS A.
- compositions obtained are stable on storage. They are easily transformed which allows for a wide variety of shapes. They are crosslinked by heating, the heating also inducing the transformation into silicone foam by evaporation of the water provided by the pore-forming additive.
- the heating can be carried out so as to bring the silicone composition to a temperature between 50 and 275 ° C., preferably between 70 and 250 ° C.
- the duration of the heating obviously varies with the temperature, the pressure and the nature of the crosslinkers. The adjustment of these various parameters is within the reach of the skilled person.
- Another object of the invention is a process for manufacturing silicone foam or a silicone foam article, in which the blowing additive according to the invention is mixed with a silicone elastomer precursor composition, then heats as seen above the composition to induce crosslinking and expansion or foaming.
- the heating can advantageously be carried out during molding, extrusion or any other shaping operation intended to give its final or intermediate form to the silicone material.
- the preparation of polyorganosiloxane compositions of polyaddition and EVC with peroxide additionally containing the pore-forming additive according to the invention is carried out using known mechanical means, for example devices equipped with a turbine agitator, kneaders, screw mixers, cylinder mixers.
- the various constituents are incorporated into these devices in an order which may be arbitrary or which will take account of the one-component or two-component form desired for the compositions.
- compositions according to the invention can also be two-component compositions, that is to say delivered in two distinct mixtures or packages, only one of which comprises the crosslinking catalyst; to obtain the elastomer, the content of the two mixtures or packages is mixed and crosslinking takes place using the catalyst.
- the pore-forming additive can be introduced either before, during or after the mixture of the two mixtures or packages.
- the present invention also relates to silicone foams and silicone foam articles obtained by the use of silicone compositions incorporating a pore-forming additive according to the invention, in particular a polyaddition composition or an EVC with peroxide as described below. above.
- silicone compositions incorporating a pore-forming additive according to the invention in particular a polyaddition composition or an EVC with peroxide as described below.
- a polyaddition composition or an EVC with peroxide as described below.
- profiles and seals in particular for the automobile industry, thermal insulators, sealing materials, damping materials, packaging materials, including in the food sector. .
- Another subject of the invention is the use of a pore-forming additive according to the invention, for the production of silicone foam or of silicone foam article.
- a / Pore-forming additive according to the invention additive A: Composition:
- a homogeneous and consistent product is obtained, non-sticky, easily handled and whitish.
- composition B 1) 100 parts of composition B
- composition B 1) 100 parts of composition B
- the oven temperature is 180 ° C.
- the polyaddition composition according to the invention with 1 part by weight of additive A results in a foam with a density of 0.55.
- the results presented under E 'and E show that all the cellular EVCs obtained exhibit very fine cellularization. The results are similar between the two pore-forming additives A and C.
- Example 1 was replaced by polyether glycol ethylene oxide polyether-siloxane copolymer having a molecular weight of about 5000 (Silwet ® L7657).
- This compound is used as a porogenic additive in the peroxide oxide crosslinking formula of Example 1, under the same conditions of concentration and processing. After crosslinking, a foam with a density of 0.55 is obtained.
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0206855A FR2840311B1 (fr) | 2002-06-04 | 2002-06-04 | Additif porogene pour mousse d'elastomere silicone |
FR0206855 | 2002-06-04 | ||
PCT/FR2003/001679 WO2003102063A2 (fr) | 2002-06-04 | 2003-06-04 | Additif porogene pour mousse d'elastomere silicone |
Publications (1)
Publication Number | Publication Date |
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EP1532199A2 true EP1532199A2 (fr) | 2005-05-25 |
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Application Number | Title | Priority Date | Filing Date |
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EP03756051A Withdrawn EP1532199A2 (fr) | 2002-06-04 | 2003-06-04 | Additif porogene pour mousse d elastomere silicone |
Country Status (4)
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EP (1) | EP1532199A2 (fr) |
AU (1) | AU2003255638A1 (fr) |
FR (1) | FR2840311B1 (fr) |
WO (1) | WO2003102063A2 (fr) |
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US20110021649A1 (en) * | 2007-02-07 | 2011-01-27 | Atsushi Sakuma | Sponge-Forming Liquid Silicone-Rubber Composition and Silicone Rubber Sponge Made Therefrom |
TWI458780B (zh) | 2007-07-31 | 2014-11-01 | Dow Corning Toray Co Ltd | 提供高透明矽酮硬化物之硬化性矽酮組合物 |
KR101610013B1 (ko) | 2008-07-31 | 2016-04-07 | 다우 코닝 도레이 캄파니 리미티드 | 다성분형 스펀지 형성성 액상 실리콘 고무 조성물 및 실리콘 고무 스펀지의 제조 방법 |
JP5475295B2 (ja) | 2009-02-02 | 2014-04-16 | 東レ・ダウコーニング株式会社 | 高透明のシリコーン硬化物を与える硬化性シリコーン組成物 |
JP5475296B2 (ja) | 2009-02-02 | 2014-04-16 | 東レ・ダウコーニング株式会社 | 高透明のシリコーン硬化物を与える硬化性シリコーン組成物 |
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GB809497A (en) * | 1956-10-15 | 1959-02-25 | Midland Silicones Ltd | Organosilicon foams |
DE3443677A1 (de) * | 1984-11-30 | 1986-06-05 | Bayer Ag, 5090 Leverkusen | Verfahren zur herstellung eines siliconschaums |
-
2002
- 2002-06-04 FR FR0206855A patent/FR2840311B1/fr not_active Expired - Fee Related
-
2003
- 2003-06-04 AU AU2003255638A patent/AU2003255638A1/en not_active Abandoned
- 2003-06-04 WO PCT/FR2003/001679 patent/WO2003102063A2/fr not_active Application Discontinuation
- 2003-06-04 EP EP03756051A patent/EP1532199A2/fr not_active Withdrawn
Non-Patent Citations (1)
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See references of WO03102063A2 * |
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WO2003102063A3 (fr) | 2004-04-08 |
AU2003255638A8 (en) | 2003-12-19 |
AU2003255638A1 (en) | 2003-12-19 |
FR2840311A1 (fr) | 2003-12-05 |
FR2840311B1 (fr) | 2004-09-03 |
WO2003102063A2 (fr) | 2003-12-11 |
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