| abstract |
To provide a resin material in which various propertiesnof a polyacetal resin such as excellent appearance,nslidability and thermal stability are maintained and anrigidity is improved as well. That is, a polyacetal copolymernwhich is prepared by a copolymerization of 100 parts by weightnof trioxane (A), 0.0005 to 2 parts by weight of the componentn(B), which is a compound (B-1) having at least three glycidylngroups in the molecule or a compound (B-2) having at least twonepoxy groups in the molecule, and 0 to 20 parts by weight ofna cyclic ether compound (C) copolymerizable with trioxane, andnwhich has a total terminal group amount of 15 to 150 mmol/kg,nwhen (B) is (B-2). |