| 摘要 |
A composition comprising (A) polycycloolefin-functional polysiloxane represented by the following average compositional formula (1) wherein R<SUP>1 </SUP>is a monovalent organic group which does not have an unsaturated bond and may be different from each other, k is the number of 0 or larger, n is the number of from 0.01 to less than 4, m is the number of from 0 to less than 4, provided that the sum of m and n is larger than 0 and less than 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, <?in-line-formulae description="In-line Formulae" end="lead"?>HSiR<SUP>2</SUP><SUB>a</SUB>O<SUB>(4-a)/2</SUB> (2)<?in-line-formulae description="In-line Formulae" end="tail"?> wherein R<SUP>2 </SUP>is a monovalent organic group and a is the number larger than 0 and less than 4, and (C) an addition reaction catalyst in a catalytic amount.
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