An object of the invention is to provide a resin composition, from which a molded article having high durability, sliding property and wear resistance can be produced with a high productivity. The present invention provides a polyacetal resin composition containing 100 parts by mass of a polyacetal resin (A) and 10 parts by mass or more and 100 parts by mass or less of a glass filler (B), in which when a molded article formed of the polyacetal resin composition by molding is fractured by application of tensile force, the surface of the glass filler (B) protruding from a fractured surface of a fractured molded article is covered with a component containing the polyacetal resin (A) having an average thickness of 0.2 m or more and 3.0 m or less.

An object of the invention is to provide a resin composition, from which a molded article having high durability, sliding property and wear resistance can be produced with a high productivity. The present invention provides a polyacetal resin composition containing 100 parts by mass of a polyacetal resin (A) and 10 parts by mass or more and 100 parts by mass or less of a glass filler (B), in which when a molded article formed of the polyacetal resin composition by molding is fractured by application of tensile force, the surface of the glass filler (B) protruding from a fractured surface of a fractured molded article is covered with a component containing the polyacetal resin (A) having an average thickness of 0.2 m or more and 3.0 m or less.

The present invention relates to: a resin composition comprising a polyacetal resin (A), a salt (B) consisting of a carboxylic acid and an alkaline-earth metal, and a rubber-containing graft polymer (C); and a molded article formed by molding the resin composition. The resin composition and the molded article of the present invention are characterized in that the thermal decomposition associated with weight loss in a molding process or the formaldehyde in the molded article is reduced.

The present invention relates to: a resin composition comprising a polyacetal resin (A), a salt (B) consisting of a carboxylic acid and an alkaline-earth metal, and a rubber-containing graft polymer (C); and a molded article formed by molding the resin composition. The resin composition and the molded article of the present invention are characterized in that the thermal decomposition associated with weight loss in a molding process or the formaldehyde in the molded article is reduced.

The present invention relates to: a resin composition comprising a polyacetal resin (A), a salt (B) consisting of a carboxylic acid and an alkaline-earth metal, and a rubber-containing graft polymer (C); and a molded article formed by molding the resin composition. The resin composition and the molded article of the present invention are characterized in that the thermal decomposition associated with weight loss in a molding process or the formaldehyde in the molded article is reduced.

A polyacetal resin composition which exhibits resistance to hot water, and contains 100 parts by mass of a polyacetal resin, 1 to 100 parts by mass, inclusive, of glass fibers subjected to a surface treatment with a blocked isocyanate compound and an aminosilane coupling agent, and 0.001 to 1.0 parts by mass, inclusive, of boric acid.

A polyacetal resin composition which exhibits resistance to hot water, and contains 100 parts by mass of a polyacetal resin, 1 to 100 parts by mass, inclusive, of glass fibers subjected to a surface treatment with a blocked isocyanate compound and an aminosilane coupling agent, and 0.001 to 1.0 parts by mass, inclusive, of boric acid.

A polyacetal resin composition suitable for providing a plate-shaped resin molded article that satisfies all of the following: high flatness, low shrinkage ratio anisotropy (high dimensional stability), high creep resistance, high impact strength, and excellent color stability during residence in the molding machine. The polyacetal resin composition for molding a plate-shaped molded article includes 100 mass parts of a polyacetal resin having a melt index (according to ASTM D1238, 190 C., 2.16 kgf) of 2.0 g/10 min to 4.0 g/10 min; 0.1 mass parts to 2 mass parts of a polyacetal copolymer that is a copolymer of (b1) trioxane, (b2) a compound having two to four cyclic ether units per one molecule, and (b3) a compound having one cyclic ether unit per one molecule, the polyacetal copolymer having a branched or crosslinked structure; and 0.1 mass parts to 1 mass part of a hindered phenol antioxidant.

A polyacetal resin composition suitable for providing a plate-shaped resin molded article that satisfies all of the following: high flatness, low shrinkage ratio anisotropy (high dimensional stability), high creep resistance, high impact strength, and excellent color stability during residence in the molding machine. The polyacetal resin composition for molding a plate-shaped molded article includes 100 mass parts of a polyacetal resin having a melt index (according to ASTM D1238, 190 C., 2.16 kgf) of 2.0 g/10 min to 4.0 g/10 min; 0.1 mass parts to 2 mass parts of a polyacetal copolymer that is a copolymer of (b1) trioxane, (b2) a compound having two to four cyclic ether units per one molecule, and (b3) a compound having one cyclic ether unit per one molecule, the polyacetal copolymer having a branched or crosslinked structure; and 0.1 mass parts to 1 mass part of a hindered phenol antioxidant.

Provided is a resin composition that is excellent in balance between tenacity and rigidity, suppresses variation in physical properties, and is further excellent in moldability. The disclosure provides a resin composition at least comprising 100 parts by mass of polyacetal resin (A), 0.01 to 1 part by mass of fatty acid metal salt (B), and 0.1 to 3 parts by mass of zinc oxide (C), wherein a total content of the polyacetal resin (A), the fatty acid metal salt (B), and the zinc oxide (C) is 98.0% by mass or more.