Silicone releases, laminates and methods

Details Silicone releases, laminates and methods Silicone releases, laminates and methods

1986-09-29

1989-04-04

Buffalow, Edith

Stock material or miscellaneous articles

Layer or component removable to expose adhesive

Halogen containing compound

428352, 428354, 428355, 428447, 427341B, 427411, 4272071, 427208, A61F 1302

Patent

active

048185760

ABSTRACT:
A silicon release laminate formed by a support with a silicone release layer. A separate pressure-sensitive silicon adhesive may be on the same or opposite side of the support as the release layer. 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 polysiloxanes having a viscosity below 900 centipoises, and preferably below about 600 centipoises, with a high degree of cross-linking. The polysiloxanes may be produced directly by hydrolysis of substituted halosiloxanes and depolymerization; or by hydration of higher molecular weight polysiloxanes 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), Traves et al.
patent: 4614677 (1986-09-01), Pennace et al.

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