Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 8, 2006
Patent Application Number
11072290
Date Filed
March 7, 2005
Patent Primary Examiner
Patent abstract
It is an object of the present invention to manufacture high quality thermotropic liquid-crystalline polymer generating no low boiling gas and inducing no discoloration resulted from thermal degradation at high yield. To manufacture a liquid-crystalline polymer having 50 mol % or larger ratio of constitutive unit introduced from 4-hydroxybenzoic acid, the reaction is conducted under the presence of an acylating agent and of a catalyst quantity of aromatic sulfonic acid.
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