Method for preparing siloxane-carbonate block copolymers

Details Method for preparing siloxane-carbonate block copolymers Method for preparing siloxane-carbonate block copolymers

1985-06-11

1987-04-14

Briggs, Sr., Wilbert J.

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

Synthetic resins

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

525474, 528 25, 528 29, C08G 7742, C08G 6362

Patent

active

046579893

ABSTRACT:
Siloxane-carbonate block copolymers are prepared by reacting (A) at least one siloxane compound with (B) at least one polycarbonate compound, one of reagents A and B being anionic and the other being reactive with nucleophiles. The siloxane compound is preferably a linear chlorosilane-terminated polysiloxane, a cyclic polysiloxane or a "living" polysiloxane anion. The polycarbonate composition may be a cyclic polycarbonate oligomer composition, preferably an oligomer mixture, or may be prepared by the reaction of such an oligomer composition with a polycarbonate formation catalyst such as tetramethylammonium tetraphenylborate.

REFERENCES:
patent: 3051684 (1962-08-01), Morton et al.
patent: 3189662 (1965-06-01), Vaughn
patent: 3379790 (1968-04-01), Krauss et al.
patent: 3419634 (1968-12-01), Vaughn
patent: 3819744 (1974-06-01), Buchner et al.
patent: 4080400 (1978-03-01), Martin
patent: 4102940 (1978-07-01), Thom et al.
"Microdomains in Alternating Block Polymers of Dimethylsiloxane and Bisphenol-A Carbonate", Polymer Letters, vol. 7, pp. 573-577 (1969).

Affiliated with

Also associated with

Rating

Method for preparing siloxane-carbonate block copolymers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for preparing siloxane-carbonate block copolymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for preparing siloxane-carbonate block copolymers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1786553