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:
Nov. 19, 2013
Filed:
Dec. 15, 2011
Satoru Yonezawa, Osaka, JP;
Hisanari Fujiwara, Osaka, JP;
Tetsuhide Sawada, Osaka, JP;
Ueno Fine Chemicals Industry, Ltd., Osaka-shi, JP;
Abstract
The present invention provides a wholly aromatic liquid-crystalline polyester resin, consisting of the repeating units shown by the formulae [I]-[V]: wherein p, q, r, s and t represent molar proportion (mol %) of repeating units respectively in the liquid-crystalline polyester resin and satisfy the following formulae:25≦≦45;2≦≦10;10≦≦20;10≦≦20;20≦≦40;=100;having a ratio P1/P2 of equal to or lower than 3.0, wherein P1 is a melt viscosity at a crystalline melting temperature measured under the condition of shear rate 1000 secand P2 is a melt viscosity at a temperature of the crystalline melting temperature +20° C. measured under the same condition as P1; and having a deflection temperature under load (DTUL) of equal to or higher than 230° C.