Mitsubishi Engineering-plastics Corporation

Japan Polyethylene Corporation

Global Polyacetal Co., Ltd.

Kunihiko Fujimoto

Masayuki Nagai

Kei Takahashi

Satoshi Nagai

Ryusuke Yamada

Ritsuya Matsumoto

Koki Sato

Ryusuke Tamaki

Makiko Ooshima

Makiko Oshima

Hidetoshi Nawata

To provide a resin composition, a pellet, a composite molded article, a method for manufacturing a composite molded article and a tank, all capable of enabling tight joining and integration of the polyacetal resin molded article and the polyethylene resin molded article, and of suppressing formaldehyde emission and occurrence of mold deposit. The resin composition contains a resin ingredient and melamine, the resin ingredient containing a polyacetal resin and a maleic anhydride-modified polyethylene resin, the polyacetal resin and the maleic anhydride-modified polyethylene resin following a mass proportion of (20 to 49):(80 to 51), and molar concentration of the maleic anhydride group capable of reacting with amino group of melamine contained in the resin composition being 5 to 25 &#x3bc;mol/g.

Resin composition, pellet, composite molded article, method for manufacturing composite molded article and tank

To provide a polyacetal resin composition which is good sliding characteristics and is less likely to produce the blister; a molded article; and a method for manufacturing the polyacetal resin composition. The polyacetal resin composition containing: (A) 100 parts by mass of a polyacetal resin; (B1) a polyolefin resin grafted with a silicone compound; (B2) a non-grafted silicone compound; and (C) 0.5 to 1.8 parts by mass of a polyolefinic lubricant, with a total of content of the silicone compound in the (B1) polyolefin resin and content of the (B2) non-grafted silicone compound, being adjusted to 0.6 to 2.5 parts by mass, per 100 parts by mass of the (A) polyacetal resin, and with (B1)/(B2), which is a ratio by mass of the content of the (B1) polyolefin resin and the content of the (B2) non-grafted silicone compound, being adjusted to 68/32 to 45/55.

Polyacetal resin composition, molded article and method for manufacturing polyacetal resin composition

The invention is a polyacetal resin composition containing a polyacetal resin (A) and a polyethylene resin (B), in which the blending proportion of the polyacetal resin (A) occupying in the total mass of the polyacetal resin (A) and the polyethylene resin (B) is 10 to 90 mass %, the melt flow rate of the polyacetal resin (A) measured at a condition of 190&#xb0; C. and 2.16 kg load is 30 g/10 minutes or less, and the polyethylene resin (B) consists of a modified polyethylene resin and the modification rate is 0.01 mass % or more based on 100 mass % of the total mass of the polyethylene resin and the melt flow rate of the polyethylene resin (B) measured at a condition of 190&#xb0; C. and 2.16 kg load is 2.5 g/10 minutes or less.

Polyacetal resin composition, composite molding using the same, and method for producing the same

Provided is a polyacetal resin composition in which at least one dihydrazone compound (B) selected from the group of two kinds of dihydrazone compounds is blended in 0.02 to 5 parts by mass with respect to 100 parts by mass of a polyacetal resin (A).

Polyacetal resin composition and resin molded article

A polyacetal resin composition containing 100 parts by weight of a polyacetal resin, 0.01 to 5 parts by weight of a colorant selected from inorganic and organic pigments, 0.01 to 3 parts by weight of a polyamide resin having a melting point or softening point of 180&#xb0; C. or less, or a polyetheresteramide resin, 0.01 to 1 part by weight of an aromatic dihydrazide compound or an aliphatic dihydrazide compound having a solubility of less than 1 g relative to 100 g of water at 20&#xb0; C., and 0.01 to 1 part by weight of a sterically hindered phenolic compound, or a combination of a hindered amine-based light stabilizer and an ultraviolet absorber, exhibits an excellent thermal stability and is capable of suppressing formaldehyde generation and mechanical strength deterioration.

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Kanagawa, Japan

Kunihiko Fujimoto