PURPOSE: To obtain the title resin compsn. exhibiting low shrinkage in oxidation, providing a cured molded item having good surface flatness and luster and exhibiting neither contamination of a mold nor color shading, by incorporating an inorg. filler treated with a specified resin.
CONSTITUTION: This thermosetting resin compsn. is prepd. by incorporating a treated inorg. filler obtd. by stirring and mixing a poly(oxazoline) (e.g., 2- ethyl-2-oxazoline homopolymer or copolymer) and/or a modified poly(oxazoline) [e.g, a partially hydrolyzed product of said poly(oxazoline)] and an inorg. filler at 0W400°C. According to said procedure, curing shrinkage is low and a cured molded item having good surface flatness and luster can be provided. Moreover, a thermosetting resin compsn. of low shrinkage exhibiting neither contamination of a mold nor color shading can be formed.
KAWAMURA KIYOSHI
SANO SADANORI
