silicone compositions, uses of compositions, methods for the preparation of silicone films and for the preparation of articles, elastomer, compounds and use of the compounds

摘要

the present invention relates to type ii photoinitiators for the radical (free radical) crosslinking of silicone compositions, particularly acrylic silicone compositions. the present invention relates to a silicone composition c1 that can be cross-linked by exposure to radiation with a wavelength between 300 and 450 nm, comprising: - at least one organopolysiloxane a comprising at least one (meth) acrylate group attached to a silicon atom; - at least one organo-hydrogen polysiloxane h comprising at least two, and preferably at least three, hydrogen atoms, each attached to different silicon atoms; and - at least one radical photoinitiator, e.g. the present invention also aims to provide a polymerizable or crosslinkable silicone composition by radical process comprising a type ii photoinitiator system suitable for crosslinking silicone compositions, in particular by radiation exposure and absorption of light radiation with a wavelength greater than 300 nm.