POLYESTER PAA BASIS AF 6-HYDROXY-2-NAPHTHOESYRE P-HYDROXYBENZOESYRE AROMATISKE DIOLER OG AROMATISKE DICARBOXYLSYRER MED GOD FORARBEJDELIGHED I SMELTET TILSTAND

POLYESTER PAA BASIS AF 6-HYDROXY-2-NAPHTHOESYRE P-HYDROXYBENZOESYRE AROMATISKE DIOLER OG AROMATISKE DICARBOXYLSYRER MED GOD FORARBEJDELIGHED I SMELTET TILSTAND

A novel polyester is provided which has been found to exhibit an optically anisotropic melt phase at a temperature which enables it readily to undergo melt processing to form quality fibers, molded articles, etc. The polyester of the present invention contains substantial concentrations of recurring...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: CALUNDANN G W
Format: Patent
Sprache:dan
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
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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:A novel polyester is provided which has been found to exhibit an optically anisotropic melt phase at a temperature which enables it readily to undergo melt processing to form quality fibers, molded articles, etc. The polyester of the present invention contains substantial concentrations of recurring 6-oxy-2-naphthoyl and p-oxybenzoyl moieties in addition to moieties derived from at least one aromatic diol and at least one aromatic diacid in the proportions indicated. The hydrogen atoms present upon the aromatic rings of these moieties optionally may be at least partially substituted (as described). The wholly aromatic polyester is capable of forming the desired anisotropic melt at a temperature below approximately 320 DEG C., and in a particularly preferred embodiment at a temperature below approximately 300 DEG C.