Toray Industries, Inc.

Kouji Yamauchi

Toshihide Inoue

Hideo Matsuoka

Hideki Matsumoto

A flame retardant resin composition including 100 parts by weight of component (A) or (B) and 0.01 to 30 parts by weight of red phosphorus (C) shows excellent flame retardancy even if the molding obtained from it is thin, and is excellent in mechanical properties, wet heat resistance and electric properties, being suitable for mechanical parts, electric and electronic parts, automobile parts, and housings and other parts of office automation apparatuses and household electric appliances. Component (A) may be a thermoplastic resin polyethylene terephthalate and ethylene terephthalate copolymers, and polyethylene terephthalate and/or ethylene terephthalate copolymer, and component (B) may be a thermoplastic resin selected from ##STR1## (O--R.sup.2 --O), (O--CH.sub.2 CH.sub.2 --O) and ##STR2## wherein R.sup.1, R.sup.2, and R.sup.3 are divalent aromatic residues.

Flame retardant resin composition

A flame retardant resin composition including 100 parts by weight of the following component (A) or (B) and 0.01 to 30 parts by weight of red phosphorus (C) shows excellent flame retardancy even if the molding obtained from it is thin, and is excellent in mechanical properties, wet heat resistance and electric properties, being suitable for mechanical parts, electric and electronic parts, automobile parts, and housings and other parts of office automation apparatuses and household electric appliances. Components (A) and (B) are as follows:

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Aichi, Japan

Kouji Yamauchi