Patent ID: 7449540

Claim:
A composition comprising (A) polycycloolefin-functional polysiloxane represented by the following average compositional formula (1) wherein R 1 is a monovalent organic group which does not have an unsaturated bond and may be different from each other, k is a number larger than of 0, n is a number of from 0.01 to less than 4, m is a number of from 0 to less than 4, provided that the sum of m and n is larger than 0 to 4, (B) a siloxane having an SiH bond, represented by the following average compositional formula (2) in such an amount that a molar ratio of the SiH bond to the unsaturated bond in the component (A) ranges from 0.1 to 10, HSiR 2 a O (4-a)/2 (2) wherein R 2 is a monovalent organic group and a is a number larger than 0 and less than 4, and (C) an addition reaction catalyst in a catalytic amount.