LIQUID CRYSTAL POLYESTER FIBER AND METHOD FOR PRODUCING THE SAME
PROBLEM TO BE SOLVED: To provide a liquid crystal polyester fiber having excellent strength and modulus, and exhibiting excellent compression resistance in the vertical direction to the fiber axis.SOLUTION: The liquid crystal polyester fiber comprises a liquid crystal polyester constituted of 38-74...
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| creator | KATSUTA HIROSHI ONO TAKEMASA FUNATSU YOSHIJI |
| description | PROBLEM TO BE SOLVED: To provide a liquid crystal polyester fiber having excellent strength and modulus, and exhibiting excellent compression resistance in the vertical direction to the fiber axis.SOLUTION: The liquid crystal polyester fiber comprises a liquid crystal polyester constituted of 38-74 mol% structural unit derived from 2-hydroxy-6-naphthoic acid, 13-31 mol% structural unit derived from 4,4'-dihydroxybiphenyl, and 13-31 mol% structural unit derived from 2,6-naphthalenedicarboxylic acid, and satisfies the following conditions 1-3 at the same time: condition 1. the value (ΔHm1/ΔHm2) of quotient obtained by dividing the quantity (ΔHm1) of the heat of fusion at the endothermic peak (Tm1) observed when carrying out a differential calorie measurement in a temperature-raising condition of 20°C/min from 50°C, by the quantity (ΔHm2) of the heat of fusion at the endothermic peak (Tm2) observed when raising the temperature again after once having cooled the sample after observing the Tm1 is ≥2.0; condition 2. the half-width of the peak at the Tm1 is |
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condition 2. the half-width of the peak at the Tm1 is <15°C; and condition 3. the strength is ≥10 cN/dtex and the modulus is ≥600 cN/dtex.</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>2011</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=20111013&DB=EPODOC&CC=JP&NR=2011202290A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20111013&DB=EPODOC&CC=JP&NR=2011202290A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KATSUTA HIROSHI</creatorcontrib><creatorcontrib>ONO TAKEMASA</creatorcontrib><creatorcontrib>FUNATSU YOSHIJI</creatorcontrib><title>LIQUID CRYSTAL POLYESTER FIBER AND METHOD FOR PRODUCING THE SAME</title><description>PROBLEM TO BE SOLVED: To provide a liquid crystal polyester fiber having excellent strength and modulus, and exhibiting excellent compression resistance in the vertical direction to the fiber axis.SOLUTION: The liquid crystal polyester fiber comprises a liquid crystal polyester constituted of 38-74 mol% structural unit derived from 2-hydroxy-6-naphthoic acid, 13-31 mol% structural unit derived from 4,4'-dihydroxybiphenyl, and 13-31 mol% structural unit derived from 2,6-naphthalenedicarboxylic acid, and satisfies the following conditions 1-3 at the same time: condition 1. the value (ΔHm1/ΔHm2) of quotient obtained by dividing the quantity (ΔHm1) of the heat of fusion at the endothermic peak (Tm1) observed when carrying out a differential calorie measurement in a temperature-raising condition of 20°C/min from 50°C, by the quantity (ΔHm2) of the heat of fusion at the endothermic peak (Tm2) observed when raising the temperature again after once having cooled the sample after observing the Tm1 is ≥2.0; 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condition 2. the half-width of the peak at the Tm1 is <15°C; and condition 3. the strength is ≥10 cN/dtex and the modulus is ≥600 cN/dtex.</abstract><oa>free_for_read</oa></addata></record> |
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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 | LIQUID CRYSTAL POLYESTER FIBER AND METHOD FOR PRODUCING THE SAME |
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