Electron beam irradiated release film

Details Electron beam irradiated release film Electron beam irradiated release film

1988-06-16

1990-05-01

Bleutge, John C.

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

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

525903, 525106, 522184, C08G 7732, C08G 7750, C08F 800, C08F 1006

Patent

active

049218824

ABSTRACT:
An electron beam irradiated release film is formed from a melt processible composition including a silicone component crosslinked by the reaction of a hydride-containing silicone and a silicone containing an unsaturated substituent within a polymeric thermoplastic matrix to form a silicone pseudo-interpenetrating polymer network. The crosslinking of the silicone component by reaction of the hydride and unsaturated substituents is inititated during thermoplastic melt-mixing and film forming of the component with the matrix. Coated films are preferably formed by coextrusion of a polymeric thermoplastic film and a crosslinkable mixture of the silicone components and a polymeric thermoplastic. Alternatively, extrusion coating of the mixture onto a preformed film may be used to form the coated films. Preferably, these films have a thickness of from 0.000005 to 0.2 inch. The film is electron beam irradiated with a dose of from about 50 rad to about 50 Mrad.

REFERENCES:
patent: 4059667 (1977-11-01), Pangonis
patent: 4172101 (1979-10-01), Getson
patent: 4265801 (1981-05-01), Moody et al.
patent: 4292222 (1981-09-01), Grigo et al.
patent: 4411945 (1983-10-01), Akao et al.
patent: 4500688 (1985-02-01), Arkles
patent: 4530879 (1985-07-01), Drahnak
patent: 4695602 (1987-09-01), Crosby et al.

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