Patent ID: 8759477
Filing Date: 2014-06-24
Classification: C08G

Abstract:
1. A preparation method of a polysiloxane-polylactide block copolymer, comprising the step of ring-opening polymerization of lactide monomers in the presence of a polysiloxane compound of the following Chemical Formula 3 wherein the ring-opening polymerization of lactide monomers is performed in the presence of an organic metal complex catalyst of the following Chemical Formula 4 or in the presence of catalyst comprising a combination of Chemical Formulas 5 and 6: wherein m is an integer of 5 to 150, R X and Y are each independently an alkoxy group having 1 to 12 carbon atoms or a hydroxyl group; wherein n is an integer of 0 to 15; p is an integer of 0 to 2; a is 0 or 1; M is Sn or Zn; R wherein n is an integer of 0 to 15; R R wherein M is Sn or Zn, p is an integer of 0 to 2, and A