Curable organopolysiloxane compositions

摘要

Curable compositions comprising (A) an organopolysiloxane of the following general formula (1): <IMAGE> (1) wherein R1 is hydrogen or methyl, R2 and R3 are monovalent hydrocarbon groups, and R4 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.