Silicone release layers, laminates and methods

Details Silicone release layers, laminates and methods Silicone release layers, laminates and methods

1984-04-04

1986-09-30

Buffalow, Edith

Stock material or miscellaneous articles

Layer or component removable to expose adhesive

Halogen containing compound

428352, 428354, 428355, 428447, 428448, 428452, 427391, 427411, 4272071, 427208, A61F 1302

Patent

active

046146776

ABSTRACT:
A silicone release laminate formed by a support with a silicone release layer. A separate pressure-sensitive silicone adhesive release layer may be on the same side of the support as the release layer, or on opposite sides of the support. The force required to separate the adhesive from the release layer is less than about 100 grams (3.3 oz.) per inch, and preferably less than 50 grams (1.7 oz.) per inch.
The release layer is formed from one or more organopolysiloxanes having a viscosity below 1000 centipoises, and preferably below about 600 centipoises, with a high degree of cross-linking. The organopolysiloxanes may be produced directly by hydrolysis of organo-substituted halosiloxanes and depolymerization; or by hydration of higher molecular weight organopolysiloxanes and heat treatment to produce lower weight constituents.

REFERENCES:
patent: 2985554 (1961-05-01), Dickard
patent: 3006463 (1961-10-01), Bond et al.
patent: 4039707 (1977-08-01), O'Malley
patent: 4258102 (1981-03-01), Traver et al.

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