METHOD FOR RECOVERING URETHANE RESIN AND METHOD FOR RECLAIMING URETHANE RESIN

PROBLEM TO BE SOLVED: To provide a method for efficiently recovering a high-purity urethane resin from mixed wastes containing a urethane resin. SOLUTION: The method for recovering a urethane resin decomposition product comprises the step of sorting mixed wastes containing a urethane resin and forei...

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Bibliographische Detailangaben
Hauptverfasser:	KAO MIN TAI, SATANI SHIHOKO, FUKAYA TARO, FUJIEDA SHINETSU
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS 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 TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for efficiently recovering a high-purity urethane resin from mixed wastes containing a urethane resin. SOLUTION: The method for recovering a urethane resin decomposition product comprises the step of sorting mixed wastes containing a urethane resin and foreign materials by removing foreign material particles of a particle diameter of 1 mm or smaller so that the amount of the foreign material particles may decrease to 5 wt.% or lower based on the entire weight, the step of chemically decomposing a urethane decomposition product in the sorted mixed wastes to obtain a liquid urethane decomposition product, and the step of removing the foreign material particles from the urethane resin decomposition product to recover the urethane resin decomposition product. COPYRIGHT: (C)2006,JPO&NCIPI