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:
Oct. 31, 2000
Filed:
Jul. 17, 1997
Applicant:
Inventors:
Christian Leboeuf, Kingston, CA;
Ryuichi Hayashi, Tokyo, JP;
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08G / ;
U.S. Cl.
CPC ...
528310 ; 528332 ; 528335 ; 528336 ; 528338 ; 528339 ; 528340 ; 524600 ; 524606 ; 524607 ; 524118 ; 524409 ;
Abstract
This invention relates to high temperature, semi-crystalline, semi-aromatic nylon copolymers with improved shrinkage and blistering resistance, made from terephthalic acid (TA), hexamethylene diamine (HMD) and another aliphatic dicarboxylic acid as monomers. These polymers display superior % TD (Transverse Direction) annealing shrinkage, superior resistance to blistering when formulated with flame retardant additives and reinforcement under infrared (IR) reflow soldering conditions for electronic conectors, as well as a very good balance of mechanical performance as high temperature nylons.