Ube Industries, Inc.

Marubishi Oil Chemical Co., Ltd.

Kazuo Tsuchiya

Kazuto Wakita

Ken Higashitsuji

Isao Nagayasu

Ikuo Emoto

Tadashi Matsunami

Teruhisa Kojima

Yukio Tasaka

Kazuaki Kobayashi

Kouji Matsumoto

A thermoplastic resin composition of a thermoplastic resin and a fibrous magnesium oxysulfate is made to be resistant to coloring by incorporation of a boric acid or boric acid anhydride.

Thermoplastic resin composition containing fibrous magnesium oxysulfate

A shaped electroconductive thermoplastic resin composition article having a preferable surface appearance is produced by a process including (1) mixing a matrix resinous material containing 100 parts by weight of a thermoplastic resin and, optionally, 120 parts by weight or less of a flame x retardant additive and 40 parts by weight or less of a flame retardant synergistic additive, with 1 to 15% based on the weight of the matrix resinous material, of stainless steel fibers having a length of 2.5 to 7.5 mm and adhered to each other with a thermoplastic resinous adhesive to form a number of bundles; (2) kneading the resultant mixture at an elevated temperature at which the matrix resinous material is melted and (3) shaping the kneaded mixture into a desired form, the kneading the shaping procedures being carried out so that the stainless steel fibers are uniformly dispersed in the melted matrix resinous material and the dispersed stainless steel fibers have an average length of 0.5 to 2.0 mm. The ratio of the average length of the dispersed and sheared stainless steel fibers to the length of the stainless steel fiber bundles is preferably in a range of 1/6 to 1/3.

Process for producing a shaped electroconductive thermoplastic resin

Disclosed is a substrate for planographic (lithographic) plate, which comprises metal foils with thicknesses of 5 to 100.mu. laminated onto both surfaces of a sheet which has a thickness of 30 to 400.mu., said sheet being obtained by sheet making of a modified polyolefin composite material comprising 100 parts by weight of a modified polyolefin resin graft-modified partially or wholly with an organic silane compound and 5 to 150 parts by weight of mica.

Substrate for planographic plate

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Sakai, Japan

Kazuo Tsuchiya