METHOD FOR PRODUCING UNSATURATED MONOMER BEARING CARBOXY TERMINAL GROUP FOR LACTONIC POLYESTER

摘要

PROBLEM TO BE SOLVED: To provide a method for producing an unsaturated monomer bearing carboxy terminal group for lactonic polyester with practical product quality in low cost. SOLUTION: A radical-polymerizable unsaturated monomer bearing a carboxy group and a cyclic lactone are allowed to react with each other in the presence of water in an amount of 1-50 pts.wt. per 100 pts.wt. of the radial-polymerizable monomer bearing carboxy group and the cyclic lactone in total by using an acidic catalyst under normal pressure, followed by boiling under reduced pressure (reaction) to produce the unsaturated monomer for the lactonic polyester represented by structural formula (1). COPYRIGHT: (C)2005,JPO&NCIPI