WHOLLY AROMATIC POLYESTER AND POLYESTER RESIN COMPOSITION

• Main Authors: SHIAKU TOSHIO, KAWAHARA TOSHINORI, YOKOTA TOSHIAKI
• Format: Patent
• Language: English
• Published: 11.06.2009
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

PROBLEM TO BE SOLVED: To provide a wholly aromatic polyester easily melt-moldable at a low temperature while excellent in heat resistance and having less generation of gas such as phenol. SOLUTION: This wholly aromatic polyester showing optical anisotropy on melting includes constituting units including (I) hydroxynaphthoic acid, (II) terephthalic acid, (III) dihydroxybiphenyl and (IV) hydroquinone, wherein the constituting unit (I) is at 35 to 75 mol%, the constituting unit (II) is at 12.5 to 32.5 mol%, the constituting unit (III) is at 12.5 to 32.5 mol% and the constituting unit (IV) is at 0.5 to 8 mol% based on the whole constituting units. COPYRIGHT: (C)2009,JPO&INPIT