Liquid crystalline polyester and film using the same

Details Liquid crystalline polyester and film using the same Liquid crystalline polyester and film using the same

2006-01-13

2010-10-19

Chen, Vivian (Department: 1787)

Stock material or miscellaneous articles

Composite

Of polyester

C428S457000, C428S458000, C528S176000, C528S190000, C528S193000, C528S203000, C528S212000, C528S218000, C528S272000, C528S298000, C528S300000, C528S302000, C528S305000, C528S308000, C528S308600

Reexamination Certificate

active

07816014

ABSTRACT:
The present invention provides a liquid crystalline polyester comprising (a) a repeating unit derived from aromatic hydroxycarboxylic acid, (b) a repeating unit derived from aromatic dicarboxylic acid and (c) a repeating unit represented by —X—Ar1-O—Ar1-Y—, wherein Ar1 represents 1,4-phenylene which may be substituted by a halogen atom, an alkyl group having 1 to 10 carbon atoms or an aryl group having 6 to 20 carbon atoms, and X and Y independently represent O or NH. The polyester in the preset invention has a sufficiently low dielectric constant and/or is a sufficiently high resistance in hydrolysis.

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