POLYESTER YARN OF THERMOTROPIC LIQUID CRYSTAL

PURPOSE:To obtain the titled yarn having improved strength and modulus of elasticity, by using a specific compound containing a cyclohexanone ring as a bifunctional compound to extend a molecular chain of a thermotropic liquid crystal polyester. CONSTITUTION:A thermotropic liquid crystal polyester i...

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Bibliographische Detailangaben
1. Verfasser:	UNNO MITSUHIRO
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 CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY NATURAL OR ARTIFICIAL THREADS OR FIBRES ORGANIC MACROMOLECULAR COMPOUNDS SPINNING TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain the titled yarn having improved strength and modulus of elasticity, by using a specific compound containing a cyclohexanone ring as a bifunctional compound to extend a molecular chain of a thermotropic liquid crystal polyester. CONSTITUTION:A thermotropic liquid crystal polyester is subjected to chain extension with a bifunctional compound shown by the formula (x is 1 or 2; y and z are independently 0 or 1, respectively; R is H, lower alkyl, alkoxy, aryl or halogen) capable of being subjected to addition reaction with a carboxyl group to give a copolymer, which is spun. The concentration of the carboxyl end group of the copolymer is