Patent ID: 7625969

Claim:
A polyacetal resin composition comprising: (I) a polyacetal resin; and per 100 parts by weight thereof, (II) more than 5 parts by weight but less than 100 parts by weight of calcium carbonate, wherein the calcium carbonate has an average particle diameter of from 0.1 μm to less than 1.5 μm and an average aspect ratio (L/D) which is a ratio of average major axis (L) of particles to average minor axis (D) of particles of 3 or less; (III) 0.005 to 10 parts by weight of an organic acid; and (IV) 0 to less than 0.05 parts by weight of a fatty acid ester, wherein the amount of Na relative to Ca is 250 ppm or less and the amount of Sr relative to Ca is from 500 to 2500 ppm.