Dual cure organopolysiloxane composition with shelf-life stability

Abstract

This disclosure provides a dual curable organopolysiloxane composition which has the ability to both photo-cure and cure through exposure to moisture, and which exhibits excellent curability and long-term storage stability at room temperature or ambient storage condition and can be applied in solventless-form. A dual cure organopolysiloxane composition comprises: (A) an organopolysiloxane having an average of one or more alkenyl group(s) per molecule and an average of one or more hydrolysable group(s) per molecule; (B) an organopolysiloxane having an average of two or more photoreactive groups per molecule; (C) a condensation reaction catalyst; (D) a combination of the following photoinitiators (d1) to (d3); (d1) 2,4,6-trimethylbenzoylphenyl phosphinate, (d2) bis(2,4,6-trimethylbenzoyl)-phenylphosphine oxide, and (d3) 2,2-dimethoxy-1,2-diphenylethan-1-one; (E) a silane with an average of two or more hydrolysable groups per molecule; and, optionally, (F) a radical scavenger.

Dependencies are inferred from the claim text.