Alternating (aba)n polylactide block copolymers

Details Alternating (aba)n polylactide block copolymers Alternating (aba)n polylactide block copolymers

C - Chemistry, Metallurgy

08

G

C08G 18/42 (2006.01) C08G 18/61 (2006.01) C08G 63/08 (2006.01)

Patent

CA 2155678

Polymers of the general formula R(A-B-A-L)?A-B-A-R and their preparation are disclosed. In the general formula, -A- is a polyhydroxy acid residue preferably a polymer of either 98 to 100 % L-lactide or 98 to 100% D-lactide having a molecular weight of 500 to 40,000 and preferably 2,000 to 20,000, -B- is an oligomeric diol or diamine residue, having a number average molecular weight of 500 to 20,000 and preferably 2,000 to 8,000. The polymers are prepared by polymerizing a lactone onto the diol or diamine followed by reacting the resulting polymeric H-A-B-A-H with a diisocyanate or diacyl chloride to form the -L- chain extending units in the general formula.

Affiliated with

Also associated with

Rating

Alternating (aba)n polylactide 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 Alternating (aba)n polylactide block copolymers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Alternating (aba)n polylactide block copolymers will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1459674