Linear block copolymers comprising urea and urethane groups, processes for preparing linear block copolymers, and methods for using block copolymers as inserts

摘要

The invention particularly relates to a linear block polymer suitable for use as a ligament for the insert, for the human or animal body. Block polymers have urea groups and urethane, and having a molecular weight of more than 10 ⁴ Daltons, preferably at least 10 ⁵ Daltons, and also includes a primary NH ₂ / OH terminal groups. In addition to use of a block polymer as an implant in a biological environment, the invention also characterized in that by using an aliphatic or aromatic diamine to the prepolymer having a molecular per two isocyanate at a molar ratio of 0.95 to 1.05 NH ₂ / NCO of Chain Extenders as to, it includes a method of producing a linear block polymer.