PRODUCTION METHOD OF RECYCLED RESIN AND PRODUCTION METHOD OF RECYCLED POLYOLEFIN RESIN FROM MIXTURE OR LAMINATE OF DIFFERENT KINDS OF RESINS

• Main Authors: MASAKI AKIRA, SHIMIZU TAKASHI, SUZUKI SHINICHIRO, TAKANAMI MASAMITSU
• Format: Patent
• Language: English; Japanese
• Published: 13.03.2024
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; MAKING GRANULES OR PREFORMS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

To decompose a resin material containing one or mores selected from a polyester resin and a polyamide resin and a polyolefin resin by high temperature/high pressure water or water in a subcritical state, and thereby take out a recycled polyolefin resin as a resin.SOLUTION: There is provided a production method of a recycled resin from a resin material containing two or more kinds of resins, in which the resin material contains one or more kinds selected from a polyester resin and a polyamide resin, and a polyolefin resin, wherein the method includes: a decomposition step of decomposing the polyester resin or the polyamide resin by high temperature/high pressure water or water in a subcritical state; and a separation step of separating the decomposed product into an undecomposed product containing the polyolefin resin and the decomposed product.SELECTED DRAWING: Figure 1 【課題】ポリエステル樹脂及びポリアミド樹脂から選ばれる１種以上と、ポリオレフィン樹脂とを含有する樹脂材料を高温・高圧の水もしくは亜臨界状態の水で分解することで、再生ポリオレフィン樹脂を樹脂として取り出すこと。【解決手段】２種類以上の樹脂を含有する樹脂材料から再生樹脂を製造する方法であって、前記樹脂材料は、ポリエステル樹脂及びポリアミド樹脂から選ばれる１種以上と、ポリオレフィン樹脂とを含有し、高温、高圧の水もしくは亜臨界状態の水で前記ポリエステル樹脂又はポリアミド樹脂を分解する分解工程と、ポリオレフィン樹脂を含有する未分解物と、分解物とに分離する分離工程とを有する再生ポリオレフィン樹脂の製造方法とする。【選択図】図１