Sulfone group -containing polyhydroxy polyether resin , a resin composition containing the resin , the curable resin composition containing the resin , and those obtained from the film

摘要

PROBLEM TO BE SOLVED: To provide a sulfo group-containing polyhydroxypolyether resin formable of an insulating resin film having good solvent solubility and excellent hygroscopicity resistance while utilizing characteristics, such as high heat resistance and high adhesion to metals.;SOLUTION: The sulfo group-containing polyhydroxypolyether resin represented by formula (1) has a sulfur content of 3-8 wt.%, a methyl group content of 10-30 wt.%, and a weight-average molecular weight of 10,000-200,000. A curable resin composition includes the sulfo group-containing polyhydroxypolyether resin and a thermosetting resin as essentials. An insulating resin film is obtained from the sulfo group-containing polyhydroxypolyether resin. The insulating resin film is obtained from the curable resin composition.;COPYRIGHT: (C)2011,JPO&INPIT