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. 29, 2011
Filed:
Nov. 25, 2004
Koji Tachikawa, Toyota, JP;
Satoshi Matsubara, Ichihara, JP;
Toru Yamanaka, Nagoya, JP;
Toray Industries, Inc., Tokyo, JP;
Abstract
A liquid crystal resin comprises structural units derived from at least two types of aromatic diols. The liquid crystal resin generates 100 ppm or less of acetic acid gas, less than 20 ppm of phenol gas, and less than 100 ppm of carbon dioxide gas when the liquid crystal resin is retained at a melting point +10° C. (or at 335° C. when the melting point is less than 325° C.) for 30 minutes in a helium gas atmosphere. The present invention provides a liquid crystal resin or a composition containing this resin by which metal corrosion, clouding of glass, bulging of molded articles, and the like are reduced.