METHOD FOR PRODUCING POLYMALIC ACID

摘要

PROBLEM TO BE SOLVED: To provide a new production method which can synthesize a polymalic acid of a higher molecular weight easier and more effectively in a higher yield. SOLUTION: A polymalic acid having a weight average molecular weight of at least 7,000 is synthesized by dehydrating polycondensation reaction of malic acid or its oligomer, or the both, in the presence of a tin compound catalyst. COPYRIGHT: (C)2004,JPO