method for condensation of at least one works with at least one cyclic bismuth in the presence of a catalyst based on titanium.

摘要

Process for the condensation of at least one epoxide with at least one cyclic anhydride of a dicarboxylic acid in the presence of a catalyst consisting of at least one peroxide complex of titanium of the peroxo type of form A …IMAGE… …??The said process makes it possible to obtain a perfectly alternating polyester. …IMAGE…