Mitsui Toatsu Chemicals, Incorporated

Minoru Hoshino

Yoichi Kawai

Masaru Abe

Katsumi Sekiguchi

Masami Maki

Yoshihisa Gotoh

Keigo Suehiro

Akio Yoshihara

Eiichi Sugihara

Koutarou Suzuki

A resin composition is herein provided which comprises 100 parts by weight of a polypropylene and 20 to 100 parts by weight of a hydrogenated styrene/butadiene or styrene/isoprene elastomeric block copolymer having a melt index of not less than 25 g/10 min as determined at a temperature of 230.degree. C. and a load of 2.16 kg/cm.sup.2. A method for manufacturing a coated molded article of the resin composition is herein provided and the method comprises the steps of molding said resin composition and then applying a coating directly without any preliminary surface treatment. This method can provide a molded article having low mold shrinkage factor and linear expansion coefficient, makes it possible to reduce the amount of fillers to be incorporated and is thus effective for making the weight of automobiles lighter.

Polypropylene resin composition and method for manufacturing coated

The present invention relates to a polypropylene resin composition having high dielectric strength comprising:

Polypropylene resin composition having high dielectric strength

A polyolefin resin composition is produced by pulverizing and surface-treating an inorganic filler together with a surface treatment agent in a dry or semi-dry pulverizing means, mixing the thus-treated inorganic filler with a specified amount of a polyolefin resin and granulating the resultant mixture, and thereafter mixing the thus-obtained granular mixture with an additional granular or pelletized polyolefin resin at a specified ratio.

Production process of polyolefin resin composition containing inorganic

A glass-fiber reinforced polypropylene composition having superior adhesion of glass fibers therein, stiffness, high-impact properties and molding properties is provided, which composition comprises a graft polypropylene resin obtained by graft-polymerizing a radically polymerizable unsaturated compound onto a crystalline polypropylene resin with an organic peroxide catalyst in a hydrocarbon solvent or a blend of the graft polypropylene with a crystalline polypropylene resin, glass fibers treated with an organic silane or titanium compound, Ca stearate and an alkaline earth metal compound, the respective quantities of the above components being specified.

Glass-fiber reinforced polypropylene resin composition

A polypropylene-base resin composition which comprises:

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Kanagawa, Japan

Minoru Hoshino