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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| creator | UNNO MITSUHIRO |
| description | 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 |
| format | Patent |
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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 <=60%, preferably <=50% based on the concentration of the carboxyl end group of the thermotropic crystal liquid polyester before the chain extension.</description><language>eng</language><subject>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</subject><creationdate>1987</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19871019&DB=EPODOC&CC=JP&NR=S62238821A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76293</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19871019&DB=EPODOC&CC=JP&NR=S62238821A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>UNNO MITSUHIRO</creatorcontrib><title>POLYESTER YARN OF THERMOTROPIC LIQUID CRYSTAL</title><description>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. 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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 <=60%, preferably <=50% based on the concentration of the carboxyl end group of the thermotropic crystal liquid polyester before the chain extension.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
| recordid | cdi_epo_espacenet_JPS62238821A |
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| subjects | 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 |
| title | POLYESTER YARN OF THERMOTROPIC LIQUID CRYSTAL |
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