Organopolysiloxane composition for the formation of a cured rele

Details Organopolysiloxane composition for the formation of a cured rele Organopolysiloxane composition for the formation of a cured rele

1989-11-21

1991-11-12

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528 15, 528 20, 528 12, 528 21, 528 31, 528 32, 524315, 524465, 524588, C08F28300

Patent

active

050649167

ABSTRACT:
A curable organopolysiloxane composition comprising an organopolysiloxane gum having higher alkenyl groups, an organohydrogenpolysiloxane crosslinker, a solvent, a platinum group metal-containing catalyst and an inhibitor therefor provides for the formation of a tough, cured release film.
When this composition is coated on the surface of any of various types of substrates, for example, paper, synthetic resin films, fibers, etc., and then heated for 10 to 20 seconds at 80 to 90 degrees Centigrade, it forms a cured film which manifests an extremely stable release performance for tacky substances, such as, for example, pressure-sensitive adhesives, and the like, while at the same time evidencing an excellent adherence to the substrate itself.
The compositions can be used with synthetic resin films, such as polyolefin, which are easily deformed by heat and with poorly heat-tolerant paper.

REFERENCES:
patent: 4256870 (1981-03-01), Eckberg
patent: 4347346 (1982-08-01), Eckberg
patent: 4609574 (1986-09-01), Keryk et al.
patent: 4946878 (1990-08-01), Jensen et al.

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