Block copolymers of polycaprolactone and poly (propylene...

C - Chemistry – Metallurgy – 08 – G

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C08G 81/00 (2006.01) A61L 27/18 (2006.01) C08G 63/664 (2006.01) C08J 3/24 (2006.01) C08L 67/06 (2006.01) C12N 5/071 (2010.01)

Patent

CA 2588351

Poly(propylene fumarate) is copolymerized with poly(caprolactone) diol to produce a block copolymer of poly(propylene fumarate) and poly(caprolactone). The biocompatible and bioresorbable block copolymer of poly(propylene fumarate) and poly(caprolactone) is useful in the fabrication of injectable and in~ situ hardening scaffolds for tissue and/or skeletal reconstruction. The block copolymer can be crosslinked by redox or photo-initiation, with or without an additional crosslinker. Thus, the copolymer is both self- crosslinkable (without the use of any crosslinkers) and photocrosslinkable (in the presence of photons such as UV light).

Selon cette invention, un poly(propylène fumarate) est copolymérisé avec un poly(caprolactone) diol pour produire un copolymère séquencé de poly(propylène fumarate) et poly(caprolactone). Ce copolymère séquencé de poly(propylène fumarate) et poly(caprolactone) biocompatible et biorésorbable est utile dans la fabrication d'échafaudages pouvant être injectés et à durcissement in-situ pour la reconstruction tissulaire et/ou du squelette. Ce copolymère séquencé peut être réticulé par redox ou photo-initiation, avec ou sans agent de réticulation supplémentaire. Ainsi, le copolymère de cette invention peut à la fois être réticulé par lui-même (sans utilisation d'agent de réticulation) ou par photons (en présence de photons tels qu'une lumière UV).

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