LIQUID-CRYSTAL POLYESTER AND LIQUID-CRYSTAL POLYESTER FILM

A liquid crystal polyester comprising a structural unit derived from 6-hydroxy-2-naphthoic acid, wherein in thermal extraction GC-MS analysis of the liquid crystal polyester under the following measuring conditions, the relative content of the following impurity component determined from the GC peak...

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Bibliographische Detailangaben
Hauptverfasser:	AZAMI, Shohei, MASUI, Nozomi
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A liquid crystal polyester comprising a structural unit derived from 6-hydroxy-2-naphthoic acid, wherein in thermal extraction GC-MS analysis of the liquid crystal polyester under the following measuring conditions, the relative content of the following impurity component determined from the GC peak area in the total ion chromatogram using methyl 6-hydroxy-2-naphthoate as a standard sample is 50 ppm or less based on the mass of the liquid crystal polyester, and the impurity component has main peaks at m/z=228, 186, 171, and 143 in the MS spectrum chart and a retention time detected in the range of 11.5 to 12.5 min in the total ion chromatogram.