Curable silicone compositions for the protection of polyurethane foam
First Claim
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1. A composition comprising the product obtained by mixing:
- (A) from 1.0 to 400 parts by weight of the reaction product of(i) an organosilicon resin consisting essentially of R3 SiO1/2 units and SiO4/2 units, wherein R represents a monovalent hydrocarbon radical, and the ratio of R3 SiO1/2 units to SiO4/2 units is from 0.6/1 to 0.9/1, and(ii) a polyorganohydrogensiloxane;
(B) 100 parts by weight of a polydiorganosiloxane having the general formula HO(R'"'"'2 SiO)x H, wherein R'"'"' represents a monovalent hydrocarbon radical and x has a value of from 10 to 1000;
(C) from 1 to 150 parts by weight of a filler; and
(D) from 0.10 to 13.3 parts by weight of an organotin catalyst.
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Abstract
There is disclosed a room temperature curing silicone for protecting polyurethane foam. The silicone coating provides protection from ultraviolet light, water penetration, and mechanical damage. The silicone coating comprises a particular organosilicon resin, an hydroxy-ended silicone polymer, fillers, and an organotin catalyst.
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Citations
56 Claims
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1. A composition comprising the product obtained by mixing:
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(A) from 1.0 to 400 parts by weight of the reaction product of (i) an organosilicon resin consisting essentially of R3 SiO1/2 units and SiO4/2 units, wherein R represents a monovalent hydrocarbon radical, and the ratio of R3 SiO1/2 units to SiO4/2 units is from 0.6/1 to 0.9/1, and (ii) a polyorganohydrogensiloxane; (B) 100 parts by weight of a polydiorganosiloxane having the general formula HO(R'"'"'2 SiO)x H, wherein R'"'"' represents a monovalent hydrocarbon radical and x has a value of from 10 to 1000; (C) from 1 to 150 parts by weight of a filler; and (D) from 0.10 to 13.3 parts by weight of an organotin catalyst. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of protecting polyurethane foam, said method comprising:
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(1) applying to said polyurethane foam, a composition comprising the product obtained by mixing; (A) from 1.0 to 400 parts by weight of the reaction product of (i) an organosilicon resin consisting essentially of R3 SiO1/2 units and SiO4/2 units, wherein R represents a monovalent hydrocarbon radical, and the ratio of R3 SiO1/2 units to SiO4/2 units is from 0.6/1 to 0.9/1, and (ii) a polyorganohydrogensiloxane; (B) 100 parts by weight of a polydiorganosiloxane having the general formula HO(R'"'"'2 SiO)x H, wherein R'"'"' represents a monovalent hydrocarbon radical and x has a value of from 10 to 1000; (C) from 1 to 150 parts by weight of a filler; and (D) from 0.10 to 13.3 parts by weight of an organotin catalyst; and (2) allowing said product to cure, thus forming a laminate. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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Specification