Patent ID: 7615387
Filing Date: 2009-11-10
Classification: C08G,C08L,C09J,Y10T

Abstract:
1. An addition reaction curing silicone composition, comprising: (A) at least one organopolysiloxane in a liquid state with a viscosity at 25° C. of 10 mPa·s or greater or in a solid state, which is represented by an average composition formula (1): wherein, each R 1 represents, independently, an unsubstituted or substituted monovalent hydrocarbon group, an alkoxy group or a hydroxyl group, provided that from 5 to 50 mol % of all R 1 groups are alkenyl groups, and from 10 to 80 mol % of all R 1 groups are aryl groups, Z represents an oxygen atom or a bivalent hydrocarbon group of 2 to 10 carbon atoms, provided at least 80 mol % of all Z groups are oxygen atoms, and n is a number that satisfies 1≦n<2, and in which from 5 to 50 mol % of all silicon atoms exist within at least one structure selected from the group consisting of (B) at least one organohydrogenpolysiloxane having at least 2 hydrogen atoms bonded to silicon atoms within each molecule and with a viscosity at 25° C. of no more than 1,000 mPa·s, represented by an average composition formula (3): wherein, each R 3 represents, independently, an unsubstituted or substituted monovalent hydrocarbon group that contains no aliphatic unsaturated bonds, a is a number that satisfies 0.7≦a≦2.1, and b is a number that satisfies 0.001≦b≦1.0, provided that a+b represents a number that satisfies 0.8≦a+b≦3, present in sufficient quantity to provide from 0.7 to 5 mols of hydrogen atoms bonded to silicon atoms within component (B) for every 1 mol of alkenyl groups bonded to silicon atoms within said component (A), and (C) an effective quantity of at least one addition reaction catalyst.