Acetal resin composition.

摘要

An acetal resin composition comprising: (A) 100 parts by weight of an acetal resin, (B) 0.01 to 5 parts by weight of a terminal-etherified polyalkylene glycol of the formula (I) R<1>-O-(-R<2>-O-)m-R<3> wherein R<1> is a hydrogen atom, an aliphatic hydrocarbon group having 1 to 7 carbon atoms, an aryl group or an aralkyl group, R<2> is an alkylene group having 2 to 3 carbon atoms, R<3> is an aliphatic hydrocarbon group having 1 to 7 carbon atoms, an aryl group or an aralkyl group, and m is a number of at least 20, and (C) 0.01 to 2 parts by weight of an ester from a polyhydric alcohol having 2 to 10 carbon atoms and a higher fatty acid having 22 to 32 carbon atoms. This acetal resin composition has highly improved mold releasability when injection-molded without any substantial impairment of mechanical properties and thermal stability inherent to an acetal resin and gives precision molded articles having little molding strain. u