Pressure sensitive adhesive release liner and fluorosilicone...

Details Pressure sensitive adhesive release liner and fluorosilicone... Pressure sensitive adhesive release liner and fluorosilicone...

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

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