Patent ID: 9708444
Date: 2017-07-18
CPC Classifications: C08G

Claim:
1. A biodegradable aliphatic polyester which is a reaction product of a functional Michael acceptor and a functional Michael donor, wherein the functional Michael acceptor comprises R 1 (A) n and the functional Michael donor comprises R 2 (D) m , wherein A is a functional Michael acceptor moiety, D is a functional Michael donor moiety, n is an integer from 2 to 10, m is an integer from 2 to 10, and R 1 and R 2 are biodegradable structures selected from the group consisting of polyglycolic acid polyol, polylactic acid polyol, poly(lactic-co-glycolic acid), poly (glycolide-co-trimethylene carbonate) polyol, polyhydroxybutyrate polyol, poly(ethylene glycol), aliphatic polyester polyol with ethylene glycol segments, polyvinyl alcohol and its copolymers, vinyl pyrrolidone copolymer, trimethylolpropane, pentaerythritol, 1,3-butylene glycol, neopentyl glycol, xylitol, sorbitol, mannitol, maltitol, polymethacrylic acid and polyacrylic acid.