Patent ID: 6310146
Filing Date: 2001-10-30
Classification: C08G,C08L,C09D

Abstract:
A hydrosilylation reaction curable composition comprising:(A) a silsesquioxane copolymer comprising units that have the empirical formula R.sup.1.sub.a R.sup.2.sub.b R.sup.3.sub.c SiO.sub.(4-a-b-c)/2, wherein a is zero or a positive number, b is zero or a positive number, c is zero or a positive number, with the provisos that 0.8.ltoreq.(a+b+c)<3.0 and component (A) has an average of at least two R.sup.1 groups per molecule, each R.sup.1 is a functional group independently selected from the group consisting of hydrogen atoms and monovalent hydrocarbon groups having aliphatic unsaturation, each R.sup.2 is a monovalent hydrocarbon group selected from nonfunctional groups and R.sup.1, each R.sup.3 is a monovalent hydrocarbon group selected from nonfunctional groups and R.sup.1 ;(B) a silyl-terminated hydrocarbon having the general formula ##STR4##where R.sup.1 and R.sup.2 are as described above for component (A), with the provisos that when R.sup.1 in component (A) is a hydrogen atom, R.sup.1 in component (B) is an unsaturated monovalent hydrocarbon group and when R.sup.1 in component (A) is an unsaturated monovalent hydrocarbon group, R.sup.1 in component (B) is a hydrogen atom, and R.sup.4 is a divalent hydrocarbon group; and(C) a hydrosilylation reaction catalyst.