Abstract:
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.
Abstract:
A decomposition reaction apparatus for the decomposition treatment of a thermoplastic resin, which comprises a reaction apparatus comprising an introduction section for introducing a resin composition containing the thermoplastic resin and a solvent containing a monomer component of the thermoplastic 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 thermoplastic 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 thermoplastic 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 thermoplastic resin as the above resin composition can be produced continuously.
Abstract:
Disclosed is a method for decomposing a polymer material, comprising subjecting a mixture of a polymer material comprising a first monomer and a second monomer with a first monomer or a derivative of the first monomer to decomposition to chemically decompose the polymer material and thus to produce a chemical starting material. A relationship between the proportion of the number of moles of the second monomer to the number of moles of the first monomer in a reaction system for decomposing the polymer material and the molecular weight of the chemical starting material produced in the reaction system is previously acquired (S101). Subsequently, the amount of the derivative of the first monomer to be added to the. polymer material is determined based on the above relationship (S102). The first monomer in the determined addition amount is then mixed with the polymer material (S103).
Abstract:
Disclosed is a method for decomposing a polymer material, comprising subjecting a mixture of a polymer material comprising a first monomer and a second monomer with a first monomer or a derivative of the first monomer to decomposition to chemically decompose the polymer material and thus to produce a chemical starting material. A relationship between the proportion of the number of moles of the second monomer to the number of moles of the first monomer in a reaction system for decomposing the polymer material and the molecular weight of the chemical starting material produced in the reaction system is previously acquired (S101). Subsequently, the amount of the derivative of the first monomer to be added to the polymer material is determined based on the above relationship (S102). The first monomer in the determined addition amount is then mixed with the polymer material (S103).
Abstract:
Disclosed is a method for decomposing a polymer material, comprising subjecting a mixture of a polymer material comprising a first monomer and a second monomer with a first monomer or a derivative of the first monomer to decomposition to chemically decompose the polymer material and thus to produce a chemical starting material. A relationship between the proportion of the number of moles of the second monomer to the number of moles of the first monomer in a reaction system for decomposing the polymer material and the molecular weight of the chemical starting material produced in the reaction system is previously acquired (S101). Subsequently, the amount of the derivative of the first monomer to be added to the. polymer material is determined based on the above relationship (S102). The first monomer in the determined addition amount is then mixed with the polymer material (S103).
Abstract:
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 (S101). 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 (S102). The first monomer in the addition amount determined is then mixed with the polymer material (S103).
Abstract:
A process for producing a regenerated resin , characterized by including the first step of, in processing of a resin composition, decomposing a resin composition containing a thermosetting resin in a supercritical or subcritic al solvent containing as an indispensable component a monomer constituting the thermosetting resin or a derivative thereof and the second step of adding a polyfunctional compound and carrying out processing thereof. Further, there are provided a regenerated resin or processing recovered matter obtained by the above production process; a regenerated resin composition obtained by th e use of the regenerated resin and/or resin composition processing recovered matter; and a method of regenerating a resin composition, in which the regenerated resin and/or resin composition processing recovered matter is re - utilized as a raw material of regenerated resin composition.
Abstract:
A system (1) for producing a raw material for a recycled resin composition, comprising: - a decomposition reaction apparatus (2) for decomposing a thermosetting resin, comprising: an introduction section (222) for introducing a resin composition containing the thermosetting resin and a solvent containing a monomer component of the thermosetting resin or a derivative of the monomer component; a decomposition reaction section (221) for obtaining a first treated recovery product containing a recycled resin formed of the thermosetting resin having a reduced molecular weight, a solid residue and a low-boiling-point component containing the solvent, by heating and pressurizing the resin composition and the solvent and bringing the solvent into a supercritical state or a subcritical state, and the decomposition reaction section (221) being comprised of a tube-type reactor (22) which is adapted to perform the decomposition treatment with the resin composition and the solvent, and a discharge section (223) for discharging the first treated recovery product, wherein the decomposition reaction apparatus (2) is adapted to continuously perform the introduction of the resin composition and the solvent into the introduction section (222), the decomposition treatment of the thermosetting resin in the decomposition reaction section (221) and the discharge of the first treated recovery product from the discharge section (223), a first separating unit (51) serving as a solid-liquid separator, wherein the first separating unit (51) is designed for separating and removing the solid residue from the first treated recovery product, a second separating unit (52) serving as a gas-liquid separator, wherein the second separating unit (52) is designed for separating and extracting the recycled resin with the reduced molecular weight as well as the low-boiling-point component containing the solvent from the first treated recovery product from which the solid residue has been removed, wherein the first separating unit (51) and the second separating unit (52) are connected to the discharge section (223) of the decomposition reaction apparatus (2) in the named sequence.
Abstract:
A decomposition reaction apparatus for the decomposition treatment of a thermoplastic resin, which comprises a reaction apparatus comprising an introduction section for introducing a resin composition containing the thermoplastic resin and a solvent containing a monomer component of the thermoplastic 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 thermoplastic 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 thermoplastic 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 thermoplastic resin as the above resin composition can be produced continuously.