POLYESTER-POLYACETAL BOCK COPOLYMER CAPABLE OF BEING BIODEGRADABLE BY ENZYME AND HAVING EXCELLENT PHYSICAL PROPERTIES AS ENGINEERING PLASTICS

摘要

PURPOSE: A polyester-polyacetal block copolymer is provided to be biodegradable and to have excellent physical properties as engineering plastics.;CONSTITUTION: In a polyester-polyacetal block copolymer, polyacetal is coupled to a polyester. The polyester is obtained by reacting a dicarboxylic acid component and diol component. The dicarboxylic component consists of 25-95 mol% of an aliphatic dicarboxylic acid or a derivative thereof, 3-70 mol% of an aromatic dicarboxylic acid or a derivative thereof, 1-5 mol% of a dicarboxylic acid which contains a metal sulfonate group, 3-70 mol% of an aromatic dicarboxylic acid or a derivative thereof, and 1-5 mol% of a dicarboxylic acid which contains a metal sulfonate group. The diol component consists of 75-99 mol% of a C1-6 alkanediol and 1-25 mol% of ether group-containing diol.;COPYRIGHT KIPO 2013