Patent ID: 7138179
Filing Date: 2006-11-21
Classification: C08G,Y10T

Abstract:
1. A method for preparing a biodegradable polyester, comprising the steps of: dispersing a monomer in the presence of a catalyst in a dispersion solvent to form a solid or liquid phase for dispersion polymerization and yielding a biodegradable aliphatic polyester in the form of spherical particles or powder, the monomer comprising a mixture of a compound (A) represented by the following formula I and a compound (B) being selected from the group consisting of compounds represented by the following formulas II to V and caprolactones: wherein R1 and R2 are a hydrogen or a C wherein n is 1 to 8; wherein m is 2 to 8; wherein x is 2 to 6; and R3 is a saturated C