Unsaturated poly (alpha-hydroxy acid) copolymers

Details Unsaturated poly (alpha-hydroxy acid) copolymers Unsaturated poly (alpha-hydroxy acid) copolymers

1985-09-30

1987-02-17

Nielsen, Earl

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

Synthetic resins

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

525415, 528354, 528355, 528357, C08G 6308, C08L 6704, C08L 6706

Patent

active

046440380

ABSTRACT:
An unsaturated poly (alpha-hydroxy acid) copolymer is prepared by reacting a cyclic diester of an alpha-hydroxy acid having 2 to 5 carbon atoms with an ethylenically-unsaturated epoxide. The reaction is conducted at a temperature of 50.degree. to 250.degree. C. in the presence of an effective amount of a ring-opening catalyst and an effective amount of a free-radical polymerization inhibitor.

REFERENCES:
patent: 3636956 (1972-01-01), Schneider
patent: 3784585 (1974-01-01), Schmitt et al.
patent: 3795701 (1974-03-01), Jenkins et al.
patent: 3984439 (1976-10-01), Vanlautem et al.
patent: 4475998 (1984-10-01), Okitsu et al.
Chujo et al., "Ring-Opening Polymerization of Glycolide", Die Makromoleculare Chemie 100, 262-267 (1967).

Affiliated with

Also associated with

Rating

Unsaturated poly (alpha-hydroxy acid) 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 Unsaturated poly (alpha-hydroxy acid) copolymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unsaturated poly (alpha-hydroxy acid) copolymers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1938652