PVB (POLYVINYL BUTYRAL) SHEET CONTAINING PLASTICIZER CONTAINING CARBOXYLIC ACID ESTER HAVING ETHER BOND AS CO-PLASTICIZER

摘要

PROBLEM TO BE SOLVED: To provide a plasticizer system having high compatibility with a partially acetalized polyvinyl alcohol. SOLUTION: A co-plasticizer selected from a group of esters composed of a carboxylic acid and an alcohol and having at least one ether bond is added for preventing a slightly polar plasticizer from bleeding from the partially acetalized polyvinyl alcohol. COPYRIGHT: (C)2006,JPO&NCIPI