Mitsubishi Chemical Industries Limited

Yasuhiro Ohmura

Seiichiro Maruyama

Shigeru Shigemoto

Yukinobu Murakami

Hiroyuki Kawasaki

Ryoji Hidaka

Flame-retardant polyester resin compositions are disclosed which have improved mechanical properties, particularly improved impact properties. The compositions comprise a halogen-containing copolymeric polyester resin derived from terephthalic acid or its derivative, an alkylene glycol or its derivative and a halogen-containing aromatic diol, said copolymeric polyester resin being blended with a minor amount of a modified ethylene copolymer derived by graft polymerization of an .alpha.,.beta.-unsaturated carboxylic acid or its derivative on the backbone of ethylene/.alpha.-olefin copolymer, and/or a minor amount of an acrylic rubber.

Polyester resin composition

A polyester resin composition comprising:

A polyamide based resin composition is prepared mixing a resin composition with a urea compound of the formula: R.sup.2 --NHCONH--R.sup.1 --NHCONH--R.sup.3 wherein R.sup.1 is an aromatic hydrocarbon group and R.sup.2 and R.sup.3 are both aliphatic groups of 8 to 32 carbon atoms, said resin composition being prepared by melt mixing 99 to 40 parts by weight of a polyamide resin and 1 to 60 parts by weight of a modified ethylene copolymer prepared by graft copolymerizing a copolymer of ethylene and an .alpha.-olefin of at least three carbon atoms with an .alpha.,.beta.-unsaturated carboxylic acid or derivative thereof.

Process for the production of a polyamide base resin composition

A polyamide resin composition comprises melamine cyanurate with or without a copper compound, an alkali metal halide, a tin compound, a bisamide compound or a bisureido compound.

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Kawasaki, Japan

Yasuhiro Ohmura