Synthesis and spinning preparation process of low-melting-point polyester

The invention discloses a synthesis and spinning preparation process of low-melting-point polyester. The process comprises the following steps: filtering obtained raw materials, and adding the raw materials, a catalyst and a modifier into a preheated reaction vessel to perform an esterification reac...

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Bibliographische Detailangaben
Hauptverfasser:	XIE CONGHAO, ZHAN XINYI, JIN HAIXIA, PEI HUANHUAN, ZHANG QINGXI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS METALLURGY NATURAL OR ARTIFICIAL THREADS OR FIBRES ORGANIC MACROMOLECULAR COMPOUNDS SPINNING TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	The invention discloses a synthesis and spinning preparation process of low-melting-point polyester. The process comprises the following steps: filtering obtained raw materials, and adding the raw materials, a catalyst and a modifier into a preheated reaction vessel to perform an esterification reaction; carrying out condensation polymerization on the esterification reaction product twice, coolingthe obtained low-melting-point polyester to normal temperature, then taking out the cooled low-melting-point polyester, carrying out granulating to obtain a plurality of low-melting-point polyester chips, and then heating and drying the low-melting-point polyester chips multiple times to obtain a chip raw material; and finally, subjecting the low-melting-point polyester chip raw material to moisture absorption and then to traction and stretching with two high-speed hot rollers with a speed difference ranging from 1500 r/min to 2000 r/min, and carrying out winding so as to obtain polyester filaments. According to the