REFINING OF POLYCARBONATE AND POLYESTER CARBONATE WASTE

PURPOSE: To provide a method for purifying waste of thermoplastic aromatic polycarbonates and/or thermoplastic aromatic polyester carbonates which contains metals, optionally in the form of metal salts, lacquers and, optionally dyes. CONSTITUTION: The waste is size-reduced to fragments having an ave...

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Bibliographische Detailangaben
Hauptverfasser:	GERUHARUTO FUENHOFU, BORUFUGANGU YAKOPU, MANFUREETO EERAATO, DEIITAA FURAITAAKU
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS DISPOSAL OF SOLID WASTE GENERAL PROCESSES OF COMPOUNDING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER MAKING GRANULES OR PREFORMS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICS PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECLAMATION OF CONTAMINED SOIL SOIL RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS 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:	PURPOSE: To provide a method for purifying waste of thermoplastic aromatic polycarbonates and/or thermoplastic aromatic polyester carbonates which contains metals, optionally in the form of metal salts, lacquers and, optionally dyes. CONSTITUTION: The waste is size-reduced to fragments having an average diameter of 0.1 cm to 5.0 cm and preferably 0.5 cm to 1.5 cm, the fragments are subsequently refluxed with acid while stirring, subsequently washed neutral and after that washed with water while stirring and thereafter washed with water until all the lacquer components removed from the polycondensate have been rinsed out, the fragments are filtered off, dried and any lacquer and/or dye residues still adhering to the fragments are optionally removed by air separation.