Title:
METHOD FOR PRODUCING POLYESTER
Document Type and Number:
Japanese Patent JP2010065099
Kind Code:
A
Abstract:
To provide a method for producing a polyester which suppresses the occurrence of a foreign material and the contamination of a die in molding due to a catalyst used, and which is more excellent in thermal stability and color tone of a polymer as compared with conventional products.
The method for producing the polyester includes bringing a dicarboxylic acid or an ester-forming derivative thereof and a diol or an ester-forming derivative thereof into esterification or ester exchange reaction and conducting polycondensation reaction, wherein at least one of an antimony compound, a germanium compound and a titanium compound is added at a specific point of the polycondensation reaction step.
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Inventors:
HATANO ERI
MORIMOTO KUNIHIRO
HONDA KEISUKE
MORIMOTO KUNIHIRO
HONDA KEISUKE
Application Number:
JP2008231021A
Publication Date:
March 25, 2010
Filing Date:
September 09, 2008
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
C08G63/78; C08G63/85
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