Radiation-curable organopolysiloxane composition
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsMasatoshi Takahashi, Masahiko Ogawa
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Abstract
The invention discloses a novel radiation-curable silicone-based release coating composition capable of giving a cured release coating film on a substrate such as a plastic resin film exhibiting excellent adhesion to a variety of substrate materials and excellent releasability. The radiation-curable releasing silicone composition of the invention comprises (A) an aromatic compound having, in a molecule, at least two cationically polymerizable organopolysiloxanyl groups such as epoxy-substituted organopolysiloxanyl groups as the silicone ingredient and (B) a photopolymerization initiator which is an onium salt compound such as diaryliodonium salt compounds.
Claims18
A radiation-curable organopolysiloxane composition which comprises, as a uniform blend:
- (A) 100 parts by weight of an aromatic compound of the formula [X—Y]nZ, in which the subscript n is a positive integer of 2 or larger, X is an organopolysiloxanyl group having at least one cationically polymerizable group, Y is a linking unit between X and Z and Z is an organic group having a divalent or higher aromatic ring and bonded to the linking unit Y at two or more sites;
- and
- (B) from 0.3 to 5 parts by weight of an onium salt compound as a photopolymerization initiator of the component (A).
Dependencies are inferred from the claim text.