C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
117/187, 402/26,
C09J 7/00 (2006.01) C08L 83/08 (2006.01) C09J 7/02 (2006.01)
Patent
CA 1282895
PRESSURE SENSITIVE ADHESIVE RELEASE LINER AND FLUOROSILICONE COMPOUNDS, COMPOSITIONS AND METHOD THEREFOR ABSTRACT Pressure sensitive adhesives can be protected with a releasable liner having a cured fluoroalkyl silicone coating which contains as little as two percent fluoroalkyl- substituted siloxane units. In a preferred embodiment of this invention, silicone pressure sensitive adhesives can be solvent-cast, and even cured, directly onto the release surface of the liner and can be removed from the protective liner with a force of no more than 400 grams per inch. The fluoroalkyl silicone copolymers of this invention are prepared by a process which involves the preparation of a cohydrolyzate of fluoroalkyl-containing and fluoroalkyl-free siloxane units, followed by further polymerization of the cohydrolyzate with other siloxane units.
536275
Brown Paul L.
Stickles David Leroy
Dow Corning Corporation
Gowling Lafleur Henderson Llp
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