Stratum having release properties and method of making

Details Stratum having release properties and method of making Stratum having release properties and method of making

1973-12-11

1976-05-18

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 775AP, 260824R, 428447, C08G 7704

Patent

active

039577244

ABSTRACT:
A stratum having accurately predictable and controllable release properties toward normally tacky and pressure-sensitive adhesive sheet materials is prepared by reacting two moieties, one terminated with a plurality of isocyanate groups and the other a liquid hydroxyl- or amine-containing organosilicone. The hydroxyl or amine groups are at least three carbon atoms distant from the nearest silicone atom and constitute no more than about 4% by weight of the organosilicone. Depending upon the release characteristics achieved, the reaction product can function as a shaped article, all or part of a release liner, or as a low-adhesion backsize for pressure-sensitive adhesive tape.

REFERENCES:
patent: 2907782 (1959-10-01), Pike
patent: 3179622 (1965-04-01), Haluska
patent: 3246048 (1966-05-01), Haluska
patent: 3529990 (1970-09-01), Becker et al.
patent: 3624010 (1971-11-01), Holdstock

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