Biodegradable polyester and manufacturing method thereof,申请号KR20110066020-传众专利搜索

Biodegradable polyester and manufacturing method thereof

申请公布号：KR101317767(B1)

申请号：KR20110066020

申请日期：2011.07.04

申请公布日期：2013.10.15

分类号：C08G63/181;C08G63/78;C08L67/03;C08L101/16

主分类号：C08G63/181

摘要：PURPOSE: A biodegradable polyester is provided to make irradiation process possible while maintaining biodegradability, to maintain a color tone b value within 3-5 and to easily manufacture a nonwoven fabric or an injection molded product. CONSTITUTION: A biodegradable polyester is manufactured by using an acid component and C2-14 diol component by esterification and polycondensation. The acid component comprises an aromatic acid which comprises a phenylene group, an aliphatic acid which comprises a carboxylic acid group, and sodium 3,5-dicarbomethoxybenzenesulfonate. The biodegradable polyester additionally comprises 60-130 ppm of a complementary color based on the total weight of the polymer. The aromatic acid is selected from terephthalic acid, isophthalic acid, dimethyl terephthalate, dimethyl isophthalate or a mixture thereof.