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:
Aug. 24, 1982
Filed:
Nov. 19, 1980
Applicant:
Inventors:
Alex S Forschirm, Parsippany, NJ (US);
Arnold J Rosenthal, Whippany, NJ (US);
Assignee:
Celanese Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; D06M / ;
U.S. Cl.
CPC ...
528191 ; 81301 ; 264235 ; 264343 ; 264346 ; 528497 ; 528502 ;
Abstract
Solvent resistant halogenated aromatic polyester fibers are prepared by first heat treating the fibers at substantially constant length at a temperature of from about 270.degree. to about 295.degree. C. for a period of from about 5 to about 60 minutes, and then further treating the fibers with perchloroethylene which is at a temperature of from about 80.degree. C. up to its boiling point for a period of at least about 15 minutes to produce halogenated aromatic polyester fibers having improved solvent resistance.