Curable composition and method for manufacturing the same
AssigneeEternal Chemical Co., Ltd.
InventorsChih Chiang Yang, Kwei Wen Liang, Hsin Hung Chen, Wan Hsi YANG
Life of this patent
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Abstract
A curable composition comprises the following: (A) a polymer having at least two silicon-bonded alkenyl groups and having an average unit formula (I′): (R12SiO2/2)a1(R23SiO1/2)b1(CH2CH2)e1; (B) a branched organopolysiloxane having at least one silicon-bonded alkenyl group and having a siloxane unit of formula R4SiO3/2; (C) an organopolysiloxane having an average unit formula (II) being capped with H: (R52SiO2/2)f(R63SiO1/2)g(R7SiO3/2)h(SiO4/2)i(CH2CH2)j; and (D) a catalyst, wherein R1, R2 and R4 to R7 and a1, b1, e1 and f to j are as defined in the specification.
Claims25
A curable composition comprising:
- (A) a polymer having at least two silicon-bonded alkenyl groups and having an average unit formula (I′):
- (R12SiO2/2)a1(R23SiO1/2)b1(CH2CH2)e1 (I′);
- wherein R1 and R2 are independently a substituted or unsubstituted mono-valent hydrocarbon group, each of R1 is the same with or different from each other, each of R2 is the same with or different from each other, and a1≧0, b1>0, and e1>0;
- (B) a branched organopolysiloxane having at least one silicon-bonded alkenyl group and having a siloxane unit of formula R4SiO3/2 wherein R4 is a substituted or unsubstituted mono-valent hydrocarbon group, and wherein the amount of component (B) is about 1 part by weight to about 9900 parts by weight, based on 100 parts by weight of component (A);
- (C) an organopolysiloxane having an average unit formula (II) being capped with H:
- (R52SiO2/2)f(R63SiO1/2)g(R7SiO3/2)h(SiO4/2)i(CH2CH2)j (II);
- wherein R5, R6 and R7 are independently H or a substituted or unsubstituted mono-valent hydrocarbon group, wherein each of R5 is the same with or different from each other, each of R6 is the same with or different from each other, f>0, g>0, h≧0, i≧0, j≧0, and the amount of component (C) is about 1 parts by weight to about 300 parts by weight, based on 100 parts by weight of the total amount of components (A) and (B);
- and
- (D) a catalyst.
Dependencies are inferred from the claim text.