Sumitomo Bakelite Company Limited

Junya Goto

Masaki Ishikawa

Tamotsu Orihara

Taichi Koide

Kazunori Shimoyachi

Sumiya Miyake

The present invention is a method for decomposing a polymer material by chemically decomposing a polymer material containing a first monomer and a second monomer in a mixture of the polymer material with the first monomer or a derivative of the first monomer to produce a chemical raw material. A relationship between a proportion of number of molecules of the second monomer to number of molecules of the first monomer in a reaction system for decomposing the polymer material and the molecular weight of the chemical raw material produced in the reaction system is acquired in advance (S). Subsequently, an addition mount of the derivative of the first monomer to be added to the polymer material is determined based on the above relationship (S). The first monomer in the addition amount determined is then mixed with the polymer material (S).

Method for decomposing polymer material, method for producing recycled resin, and method for recovering inorganic filler

A decomposition reaction apparatus for the decomposition treatment of a thermosetting resin, which comprises a reaction apparatus comprising an introduction section for introducing a resin composition containing the thermosetting resin and a solvent containing a monomer component of the thermosetting resin or a component similar to the monomer component, a decomposition reaction section for heating and pressuring the resin composition and the above solvent so as for the solvent to have a supercritical state or a subcritical state, to thereby prepare a treated and recovered product containing a recycled resin formed by the reduction of the molecular weight of the above thermosetting resin, and a discharge section for discharging the treated and recovered product. In the above reaction apparatus, the introduction of the resin composition and the solvent, the decomposition treatment of the thermosetting resin in the decomposition reaction section and the discharge of the treated and recovered product from the discharge section are all carried out continuously, and therefore, a raw material for a recycled resin composition using an industrial or general waste containing a thermosetting resin as the above resin composition can be produced continuously.

Decomposition reaction apparatus, system for producing raw material for recycled resin composition, method for producing raw material for recycled resin composition, raw material for recycled resin composition, and formed article

The invention provides a process for producing a recycled resin, which includes: a first step of decomposing a resin composition containing a thermosetting resin in a supercritical or subcritical solvent having a monomer constituting the thermosetting resin or a derivative thereof as an essential component and a second step of adding a polyfunctional compound thereto to process; a recycled resin or a processed and recovered matter obtained according to the process for producing; a recycled resin composition formed from a recycled resin and/or a processed and recovered matter of the resin composition; and a method for recycling a resin composition, which reuses said recycled resin and/or said processed and recovered matter of a resin composition as a raw material of a recycled resin composition.

Process for producing regenerated resin, regenerated resin, processing recovered matter from resin composition, regenerated resin composition and method of regenerating resin composition

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Tokyo, Japan

Junya Goto