Patent ID: 8022169
Filing Date: 2011-09-20
Classification: C08G,D01D,D01F,D03D,D04H,D10B,Y10T

Abstract:
1. A method of preparing an aliphatic copolyester, comprising: (a) mixing a first compound defined by and a catalyst, and adding a second compound defined by and a lactide, wherein the second compound and the lactide have a total weight less than the first compound, wherein a is 10-230, b, d and e have a ratio of 10-35:10-35:80-30, c is 1-4, and f is 1-10; (b) adding the second compound and the lactide, wherein the second compound and the lactide have a total weight less than the first compound, the second compound and the lactide in step (a); (c) adding the second compound and the lactide, wherein the second compound and the lactide have a total weight less than the first compound, the second compound and the lactide in steps (a) and (b); (d) adding the second compound and the lactide, wherein the second compound and the lactide have a total weight less than the first compound, the second compound and the lactide in steps (a), (b) and (c).