To obtain the subject polymer excellent in mechanical strength, thermal properties, electrical properties and hot water resistance, thus useful for e.g. engineering plastics, by reaction of a phenol derivative in the presence of an enzymatic catalyst in an organic solvent-water mixed solvent of specific volume ratio.
This polyphenylene oxide with a molecular weight of 1000-20000, excellent in mechanical strength, thermal properties, electrical properties and hot water resistance, and useful for e.g. engineering plastics is obtained by reaction of a phenol derivative of e.g. the formula ((n) is 2 or 3; R is OH, carboxyl, an alkyl, alkenyl, alkynyl, cycloalkyl, aryl, alkoxyl, halogen, nitro, cyano, acyl, sulfonyl, substituted amino, acyloxy or sulfonyloxy) (e.g. 4- hydroxy-3,5-dimethoxybenzoic acid) in the presence of an enzyme (e.g. peroxidase) in an organic solvent (e.g. acetone)-water mixed solvent ≥1/10 in the volume ratio of the organic solvent to water.
| WO/2018/079683 | METHOD FOR PRODUCING OBJECTIVE SUBSTANCE |
| JPH04121195 | PRODUCTION OF OPTICALLY ACTIVE PROPANE-2-OLS |
UYAMA HIROSHI
IKEDA RYOHEI
