Block copolymers of polysiloxanes and copolymers of conjugated d

Details Block copolymers of polysiloxanes and copolymers of conjugated d Block copolymers of polysiloxanes and copolymers of conjugated d

1991-06-28

1993-11-09

Thibodeau, Paul J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428286, 428290, 428447, B32B 904

Patent

active

052601234

ABSTRACT:
Block copolymers are described which comprise alternating blocks of (A) a polysiloxane; and (B) a copolymer of a 1,3-conjugated diene and a monovinyl aromatic compound. The block copolymers can be prepared by reacting a polysiloxane with a dilithiated copolymer of a conjugated diene and a monovinyl aromatic compound and thereafter neutralizing the reaction product with a protonic acid or a polyfunctional alkyl silane or silicon tetrachloride. Cured elastomer compositions exhibiting surface release characteristics are obtained by curing a mixture comprising the above-described block copolymer in the presence of a curing system comprising a peroxide and sulfur. Multilayer elastomer structures useful in manufacturing articles from elastomeric materials also are described wherein at least a portion of an outer layer of the multilayer elastomer structure has release characteristics and comprises the cured block copolymers of the present invention.

REFERENCES:
patent: 3051684 (1962-08-01), Morton
patent: 3483270 (1969-12-01), Bostick
patent: 3673272 (1972-06-01), Dean
patent: 3760030 (1973-09-01), Dean
patent: 3875254 (1975-04-01), Dean
patent: 3928490 (1975-12-01), Hergenrother
patent: 4359340 (1982-11-01), Comper et al.
patent: 4381331 (1983-04-01), Johnson
patent: 4500466 (1985-02-01), Hayes et al.
patent: 4533305 (1985-08-01), Comper et al.
patent: 4547544 (1985-10-01), Allardice
patent: 4677169 (1987-06-01), Crivello
patent: 4713409 (1987-12-01), Hayes et al.
patent: 4720526 (1988-01-01), Roland
patent: 4853069 (1989-08-01), Williams et al.
patent: 5086141 (1992-02-01), Georges
patent: 5089336 (1992-02-01), Kumar et al.

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