Pressure sensitive adhesive release liner and fluorosilicone com

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

1989-03-13

1989-12-26

Thomas, Alexander S.

Stock material or miscellaneous articles

Layer or component removable to expose adhesive

Halogen containing compound

428447, B32B 706

Patent

active

048897531

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 not 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.

REFERENCES:
patent: 3050411 (1962-08-01), Keil
patent: 4039707 (1977-08-01), O'Malley
patent: 4039707 (1977-08-01), O'Malley
patent: 4472480 (1984-09-01), Olson
patent: 4565714 (1986-01-01), Koshar
patent: 4736048 (1988-04-01), Brown et al.
patent: 4842902 (1989-06-01), Brown et al.

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