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:
Sep. 26, 1995
Filed:
Apr. 26, 1993
Eui W Choe, Randolph, NJ (US);
John A Flint, Berkeley Heights, NJ (US);
Hoechst Celanese Corp., Somerville, NJ (US);
Abstract
High to ultrahigh polyester compositions comprising monomer units derived from 2,6-naphthalenedicarboxylic acid, 4,4'-bibenzoic acid and ethylene glycol are useful as fibers and molding resins when the mole ratio of 4,4'-bibenzoic acid to 2,6-naphthalenedicarboxylic acid is from about 60:40 to about 40:60, and especially when the two diacids are included in about equimolar amounts. These compositions yield fiber with excellent tensile properties, both at room temperature and at elevated temperatures. When these compositions are melt spun at a relatively low melt temperature and high draw down ratio, fibers with excellent tensile properties are obtained without a subsequent drawing step.