Hitachi Cable, Inc.

The Japan Steel Works, Ltd.

Hitachi, Ltd.

Hitachi Metals, Ltd.

Utsunomiya University

Toshiharu Goto

Takanori Yamazaki

Jun Kakizaki

Yoshihiko Iwamoto

Masaaki Mukaide

Shingo Ashihara

Masaaki Yoshida

Ryosuke Kobayashi

A method of decomposing an organic compound includes decomposing an organic compound by alkyl carbonate at 250&#xb0; C. or more. The organic compound includes a cross-linked polymer. The cross-linked polymer includes a polymer cross-linked by organic peroxide cross-linking, radiation cross-linking, or silane cross-linking The alkyl carbonate includes dimethyl carbonate or diethyl carbonate.

Method of decomposing organic compound

A method of treating a polymer includes oxidatively treating the polymer including a carbon-carbon bond framework in a gas atmosphere at a pressure of not less than 5.0 MPa and at a temperature of higher than 140&#xb0; C. and lower than 200&#xb0; C. by using oxygen included in the gas atmosphere.

Method of treating polymer with carbon-carbon bond framework and product obtained by the treating method

A method of treating a polymer compound has the steps of: mixing and agitating the polymer compound and a chemical agent in an extruder while controlling the inside of the extruder to be kept at a high temperature and a high pressure to have a reaction mixture containing a polymer treated product; supplying the reaction mixture continuously into a high-pressure container disposed following the extruder and retaining the reaction mixture at the high temperature and high pressure for a predetermined time; then supplying the reaction mixture continuously to a chemical agent separator to separate the polymer treated product; and supplying the separated polymer treated product continuously to a molding means to form it into a molded material.

Method of treating polymer compound and treatment system for the same

The object of the present invention resides in providing a method and instrument of polymer processing treatment, wherein a sudden pressure change due to expansion by gasification of a reactant when it is exhausted from a reacting extruder is given in a little amount to a molding machine for a treated substance, and a change in the amount of the material supplied to the molding machine and a variation in molding are little, and hence continuous and uniform molding is possible. That is, the method of the present invention resides in a method of polymer processing treatment, which includes the steps of: reacting a polymer with a reactant under mixing and stirring at a high temperature and a high pressure in the inside of a reacting extruder to produce the treated substance; introducing said treated substance and a remaining reactant into a reactant-separation tank to separate the treated substance and the reactant; and molding the separated treated substance.

Method and instrument of polymer processing treatment

A polymer treating method has the steps of: reacting a polymer compound with a reaction agent in a reaction vessel to generate a polymer treatment product; discharging the polymer treatment product containing the reaction agent from the reaction vessel; depressurizing the polymer treatment product; introducing the polymer treatment product into a degassing extruder; separating the reaction agent from the polymer treatment product through a vent box that is connected to upstream of the degassing extruder and that has a volume of equal to or more than that of the reaction vessel; and extruding the polymer treatment product from the degassing extruder.

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Hitachi, Japan

Toshiharu Goto