The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 2006
Filed:
Aug. 26, 2003
Satoshi Okamoto, Tsukuba, JP;
Manabu Hirakawa, Funabashi, JP;
Satoshi Okamoto, Tsukuba, JP;
Manabu Hirakawa, Funabashi, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
The object is to provide liquid crystalline polyester which gives molded articles without generating acetic acid gas, and a method for producing the liquid crystalline polyester. This object is achieved by a method for producing a liquid crystalline polyester comprising melt-polymerizing aromatic hydroxycarboxylic acid represented by the formula (I), aromatic diol represented by the formula (II), and aromatic dicarboxylic acid represented by the formula (III) with using a diaryl carbonate represented by the formula (IV).HO—R—COOH  (I)HO—R—OH  (II)HOOC—R—COOH  (III)