Curable organopolysiloxane compositions.

摘要

Curable compositions comprising (A) an organopolysiloxane of the following general formula (1): <CHEM> wherein R<1> is hydrogen or methyl, R<2> and R<3> are monovalent hydrocarbon groups, and R<4> is a divalent organic group, (B) a silane having an alpha -silylester group, (C) a photoinitiator, and (D) a curing catalyst. The compositions are both photo-curable and room-temperature-curable. When cured by irradiation with light, the compositions give cured products having good rubber properties.