METHOD FOR SELECTING ESTER FUNCTIONAL GROUP-CONTAINING POLYMERS FROM MIXTURE OF ESTER FUNCTIONAL GROUP-CONTAINING POLYMERS AND OTHER TYPES OF POLYMERS

The present invention relates to a method for selecting ester functional group-containing polymers from a polymer mixture of the ester functional group-containing polymers and other types of polymers, and more particularly, to a method wherein foreign substances that only exhibit color in the ester...

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Bibliographische Detailangaben
Hauptverfasser:	LEE, Jong Yong, JO, Ye Rim, LE, Thi Hong Ngan, CHO, Joungmo
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PHYSICS TESTING THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention relates to a method for selecting ester functional group-containing polymers from a polymer mixture of the ester functional group-containing polymers and other types of polymers, and more particularly, to a method wherein foreign substances that only exhibit color in the ester functional group-containing polymers are removed from the polymer mixture by using an extracting agent for extracting the foreign substances and decolorized, and then the decolorized polymers are selectively separated by using the color difference with the other non-decolorized polymers.