CONTINUOUS PRODUCTION OF POLYESTER

PROBLEM TO BE SOLVED: To provide a means for suppressing generation of a by-product such as diethylene glycol, increasing a reaction rate and keeping stable reaction in an esterifying reaction in a method for continuously producing a polyester. SOLUTION: This method for continuously producing a poly...

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Bibliographische Detailangaben
Hauptverfasser:	KAWAJI TOMIO, ASAKURA RYOSUKE, AYABE TOSHIHARU
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING TEXTILES
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a means for suppressing generation of a by-product such as diethylene glycol, increasing a reaction rate and keeping stable reaction in an esterifying reaction in a method for continuously producing a polyester. SOLUTION: This method for continuously producing a polyester comprises making a reaction temperature of an esterifying reaction to be 280-300 deg.C, a molar ratio of (glycol and/or its ester-forming derivative) to (an alkylene terephthalate and/or its isomer) in the reactor to be 1.01-1.10 and a reaction time to be