High-molecular weight, segmented, polycarbonate elastomers

Details High-molecular weight, segmented, polycarbonate elastomers High-molecular weight, segmented, polycarbonate elastomers

1978-01-16

1980-04-01

Briggs, Sr., Wilbert J.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

525146, 525148, 528196, 528205, C08G 6324, C08G 6364

Patent

active

041962761

ABSTRACT:
High-molecular weight polycarbonate elastomers are produced by reacting polymer segments having an average molecular weight (Mn) of more than 600 and carboxyl groups with diphenols and phosgene according to the two-phase boundary polycondensation process at a pH value between about 9 and about 14 and a temperature between about 0.degree. C. and 80.degree. C. and, thereafter, either heat-treating the resulting reaction products at temperatures between about 40.degree. C. and about 100.degree. C. or gelling the resulting reaction products in solution in organic solvents.

REFERENCES:
patent: 3367993 (1968-02-01), Caldwell et al.
patent: 3419635 (1968-12-01), Vaughn
patent: 3461187 (1969-08-01), Cantrill
patent: 3641200 (1972-02-01), Matzner
patent: 3843708 (1974-10-01), Matzner
patent: 4001184 (1977-01-01), Scott
Goldberg, E. P.; "Elastomeric Polycarbonate Block Copolymers," Journal of Polymer Science: Part C, vol. 55, No. 4, pp. 707-730.

Affiliated with

Also associated with

Rating

High-molecular weight, segmented, polycarbonate elastomers does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High-molecular weight, segmented, polycarbonate elastomers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-molecular weight, segmented, polycarbonate elastomers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1314959