Aromatic liquid-crystalline polyester and film thereof
AssigneeSumitomo Chemical Company, Limited
InventorsSatoshi Okamoto, Tomoya Hosoda, Shinji Ohtomo
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Abstract
An aromatic liquid-crystalline polyester having a small dielectric loss in a wide frequency region is provided. An aromatic liquid-crystalline polyester is provided that can manufacture a film having a small volume expansion by heating. An aromatic liquid-crystalline polyester substantially comprising a repeating structural unit originating in 2-hydroxy-6-naphthoic acid 30 to 80 mol %, a repeating structural unit originating in aromatic diol 35 to 10 mol %, and a repeating structural unit originating in aromatic dicarboxylic acid 35 to 10 mol %.
Claims22
An aromatic liquid-crystalline polyester consisting essentially of:
- a repeating unit derived from 2-hydroxy-6-naphthoic acid of 30 to 80 mol %;
- a repeating unit derived from aromatic diol of 35 to 10 mol %;
- and
- a repeating unit derived from aromatic dicarboxylic acid of 35 to 10 mol %.
A laminated article comprising a metal layer and a layer comprising the aromatic liquid-crystalline polyester comprising:
- a repeating unit derived from 2-hydroxy-6-naphthoic acid of 30 to 80 mol %;
- a repeating unit derived from aromatic diol of 35 to 10 mol %;
- and
- a repeating unit derived from aromatic dicarboxylic acid of 35 to 10 mol % and a metal layer.
Dependencies are inferred from the claim text.