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US 2004/0106706 A1Published application
Flame retardant silicone compositions
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsMiyuki Tanaka, Kazuyasu Sato
Life of this patent
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Abstract
A silicone composition comprising (A) an organopolysiloxane having at least one lower alkenyl group in a molecule, (B) an organohydrogenpolysiloxane having at least two SiH groups in a molecule, (C) a platinum catalyst, and (D) at least one compound selected from among indoline, 1,2,3-triazole, 1,2,4-triazole, imidazole, indazole, benzoxazole, 2-hydroxybenzoxazole, 5-benzyloxyindole, 1,2-benzisoxazole, 2,1-benzisoxazole, and 1,3-benzodioxole cures effectively into a transparent rubbery or gel product having flame retardance.
Claims2
A flame retardant silicone composition comprising
- (A) 100 parts by weight of an organopolysiloxane having at least one lower alkenyl group in a molecule, represented by the following general formula (1):
- RaR1bSiO(4−a−b)/2 (1)
- wherein R is a lower alkenyl group, R1 is a substituted or unsubstituted monovalent hydrocarbon group free of aliphatic unsaturation, “a” is a positive number of 0.0001 to 0.2, “b” is a positive number of 1.7 to 2.2, and the sum of a+b is 1.9 to 2.4,
- (B) an organohydrogenpolysiloxane having at least two hydrogen atoms bonded to silicon atoms in a molecule, in an amount to give 0.1 to 5 silicon atom-bonded hydrogen atoms per alkenyl group in component (A),
- (C) a platinum catalyst in an amount to give 0.1 to 1,000 ppm of platinum element based on the weight of component (A), and
- (D) 0.0001 to 1 part by weight of at least one compound selected from the group consisting of indoline, 1,2,3-triazole, 1,2,4-triazole, imidazole, indazole, benzoxazole, 2-hydroxybenzoxazole, 5-benzyloxyindole, 1,2-benzisoxazole, 2,1-benzisoxazole, and 1,3-benzodioxole.
3 more elements
Dependencies are inferred from the claim text.