Method for preparing copolyester

The invention discloses a method for preparing copolyester, comprising the steps: using 100 mol% at least one dibasic acid and 100-150 mol% at least one dihydric alcohol as monomer materials, and obtaining oligomer after esterification reaction; and conducting polymerization reaction for the oligome...

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Bibliographische Detailangaben
Hauptverfasser:	HUANG BAIHAO, SHEN SHUZHEN, LAI CHONGGUANG, CHEN FENGGUAN
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	The invention discloses a method for preparing copolyester, comprising the steps: using 100 mol% at least one dibasic acid and 100-150 mol% at least one dihydric alcohol as monomer materials, and obtaining oligomer after esterification reaction; and conducting polymerization reaction for the oligomer with a titanium phosphorus common catalytic agent so as to obtain the copolyester. Therefore, the prepared copolyester has characteristics of good hue, improved brightness and stable production.