Mitsubishi Chemical Industries Limited

Hiroyuki Kawasaki

Seiichiro Maruyama

Yasuhiro Ohmura

Yoshikazu Kawaguchi

Seiichro Maruyama

A molded article having excellent optical characteristics and obtained by injection molding a resin composition of a bis(hydroxyphenyl)alkane polycarbonate resin having an average molecular weight of 12000 to 18000 and containing 0.005 to 0.5 wt %, based on the resin, of a phosphorous ester represented by the general formula, ##STR1## wherein R.sup.1 and R.sup.2 independently represent an alkyl or aryl group, and R.sup.3 represents hydrogen, an alkyl or aryl group, at a resin temperature of 330.degree. to 400.degree. C. and at a mold temperature of 50.degree. to 110.degree. C., and a method for producing such articles.

Production of molded articles having excellent optical characteristics

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.

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Kitakyushu, Japan

Hiroyuki Kawasaki