RESIN COMPOSITION AND ITS PRODUCTION

PURPOSE:To obtain a resin composition excellent in dimensional stability, heat resistance, impact resistance, solvent resistance and moldability, by mixing a polyolefin with a polyphenylene ether resin, a specified polymer, an inorganic filler and an oxygen-containing hydrocarbon compound. CONSTITUTION:A composition is obtained by mixing at least part of 25-58wt% polyolefin with 5-60pts.wt., per 100pts.wt. total polymer component, inorganic filler (e.g., talc) of an average particle diameter of 0.2-10mum and a specific surface area >=25,000cm /g. This composition is mixed with 25-65wt% polyphenylene ether resin of a reduced viscosity of 0.15-0.7dl/g, 4-50wt% polymer having at least one alkenylaromatic compound polymer chain and an aliphatic hydrocarbon chain in one molecular chain (e.g., polystyrene-grafted ethylene/propylene rubber) and 0.1-10pts.wt., per 100pts.wt. total polymer component, oxygen-containing hydrocarbon compound having at least one oxirane ring structure in 1mol (e.g., stearyl glycidyl ether).