Mitsubishi Rayon Company, Limited

Haruo Ueda

Yasunori Shirai

Tamae Takagi

Thermoplastic resin composition for a light reflector such as a housing, reflector, and extension of an automotive lamp, and a lighting fixture. The composition contains 2 to 45 parts by mass of an inorganic filler treated with a fatty acid type surface treating agent and has an average diameter of not more than 3 &#x3bc;m, per 100 parts by mass of a thermoplastic resin. The housing reflector made from such thermoplastic resin composition shows excellent surface smoothness, surface luster and surface image clarify.

Thermoplastic resin composition for light reflector, formed article for light reflector, light reflector, and method for producing formed article for light reflector

Disclosed are a thermoplastic resin composition which has a reduced tendency to mold staining while being shaped and a high flowability, and a shaped article which, when used as a lamp component, has good surface appearance and generates little volatiles by the heat of the lamp. Specifically disclosed are a thermoplastic resin composition containing a polyester resin (A), a cresol novolac epoxy resin (B), and a vinyl cyanide-aromatic vinyl copolymer containing epoxy group (C), and a shaped article shaped therefrom, wherein the cresol novolac epoxy resin (B) and the vinyl cyanide-aromatic vinyl copolymer containing epoxy group (C) are compounded in amounts of 0.01 to 3 parts by mass and 2 to 12 parts by mass, respectively, relative to 100 parts by mass of the polyester resin (A).

Thermoplastic resin composition and shaped article therefrom

Thermoplastic resin compositions for a light reflector contain 2 to 45 parts by mass per 100 parts by mass of a thermoplastic resin (A) of an inorganic filler (B1) treated with a fatty acid type surface treating agent and having an average particle diameter of not more than 3 &#x3bc;m, or 2 to 45 parts by mass of an inorganic filler (B2) having a refractive index &#x3b1; of 1.61&#x2266;&#x3b1;&#x2266;2.5 and having an average particle diameter of not more than 3 &#x3bc;m, 0.01 to 3 parts by mass of glycerol triester of a fatty acid and/or a glycerol diester of a fatty acid (C1), and 0.01 to 3 parts by mass of a glycerol monoester of a fatty acid (C2). A molded article for a light reflector and a light reflector in which a light reflecting metal layer is directly formed on at least a part of the surface of the molded article is produced from one of such thermoplastic resin compositions.

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Toyohashi, Japan

Haruo Ueda