摘要:
The present invention relates to semisolid mixtures of oligomers and/or polymers based on lactic acid, the preparation thereof and the use thereof as absorbable implants.
摘要:
The present invention relates to a method of producing polyesters based on hydroxycarboxylic acids, more particularly based on .alpha.-hydroxycarboxylic acids.
摘要:
The invention relates to the use of absorbable block copolymers with polyether and polyester units for preparing surgical implants which are suitable for the human or animal body, and the block copolymers in question. The block copolymers used according to the invention and those which are new according to the invention are characterised by high mechanical strength and rapid absorption kinetics.
摘要:
A process for producing trimethylene carbonate wherein 1,3-propanediol is reacted with diethylcarbonate in the presence of zinc powder, zinc oxide, tin powder, tin halide or an organo-tin compound, at an elevated temperature.
摘要:
The invention relates to a process for preparing reabsorbable polyesters by bulk polymerisation, wherein the reaction components are melted and homogenised in a stirred reactor, the reaction mixture is then transferred into a number of smaller-volume containers, the reaction mixture is polymerised in these containers and the polyester obtained is isolated by removing it from the containers, and the use of the reabsorbable polyesters thus produced for preparing reabsorbable implants.