Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1993-11-01
1999-08-03
Dawson, Robert
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
525100, 525105, 525106, 525479, 528 14, 528 25, 526275, C08G 7704
Patent
active
059326492
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), Morten
patent: 3483270 (1969-12-01), Bostick
patent: 3673272 (1972-06-01), Dean
patent: 3691257 (1972-09-01), Kendrick
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 et al.
patent: 4713409 (1987-12-01), Hayes et al.
patent: 4720526 (1988-01-01), Roland
patent: 4853069 (1989-08-01), Williams et al.
patent: 4954408 (1990-09-01), Georges
patent: 5086141 (1992-02-01), Georges
Kesten et al, "Thermoplastic Elastomers Based on Polysiloxanes," Institute of Polymer Science, The University of Akron, John Wiley & Sons, (1975), pp. 113-121.
Graves Daniel F.
Hergenrother William L.
Bridgestone Corporation
Dawson Robert
Hall Daniel N.
LandOfFree
Block copolymers of polysiloxanes and copolymers of conjugated d does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Block copolymers of polysiloxanes and copolymers of conjugated d, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Block copolymers of polysiloxanes and copolymers of conjugated d will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-850078