Idemitsu Kosan Company, Limited

Idemitsu Petrochemical Co., Ltd.

Idemitsu, Kosan Kabushiki-kaisha (idemitsu Kosan Co., Ltd.)

Osamu Isogai

Hidehiko Kaji

Masami Tomikawa

Takeshi Matsumoto

Norio Sugi

Takahiro Hirai

Yuzo Ohta

Toshihumi Kagiya

Disclosed is a polyolefin resin composition which comprises 35 to 98% by weight of a polyolefin resin, 1 to 50% by weight of a muscovite and 1 to 50% by weight of titanium oxide. Also disclosed is another polyolefin resin composition which comprises further 0.5 to 40 parts by weight of a talc per 100 parts by weight of the resin composition defined above. The polyolefin resin composition according to the present invention has excellent light-shielding properties, small specific gravity which contributes to lightening the weight, excellent shock resistance and stiffness balance as well as moldability when manufacturing articles such as electric parts and automobile parts.

Polyolefin resin composition

Flame retarded resin compositions are formed of specified quantities of polypropylene, polyethylene, inorganic filler and flame retarder such as an organic halide.

Flame retarding polyolefin resin blend composition

Pencils not requiring sharpening are produced by wrapping a thermoplastic resin sheet, which has been uniaxially stretched, around a core material so that a stretched direction of the sheet forms a spiral against the core material, whereby the sheet forms a holder for the pencil which may be stripped off to selectively expose the core material.

Pencils not requiring sharpening

Growing community of inventors

Ichihara, Japan

Osamu Isogai