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 is provided by containing a constituting unit including (I) hydroxynaphthoic acid, (II) terephthalic acid, (III) dihydroxybiphenyl and (IV) naphthalene dicarboxylic acid and/or dihydroxybenzene as an essential constituting component, and also having a 35 to 75 mol% constituting unit (I), a 12.5 to 32.5 mol% constituting unit (II), a 12.5 to 32.5 mol% constituting unit (III) and a 1 to 8 mol% constituting unit (IV) based on the whole constituting units. COPYRIGHT: (C)2009,JPO&INPIT