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. 22, 1983
Filed:
Sep. 23, 1982
Applicant:
Inventors:
Howell L Peterson, New Providence, NJ (US);
Paul E McMahon, Chatham, NJ (US);
Assignee:
Celanese Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
4273881 ; 4273898 ; 4273899 ; 4274346 ; 428375 ; 428412 ; 524104 ;
Abstract
An improved polycarbonate sizing finish is provided comprised of a polycarbonate dissolved in a solvent mixture comprising N-methyl-2-pyrrolidone (NMP) and an alcohol having from 1 to 4 carbon atoms. The use of such a solvent mixture enables a relatively constant concentration of polycarbonate to be maintained, and consequently, enables a sized product fiber to be provided having a substantially uniform polycarbonate concentration thereon. In addition, the solvent may be readily and substantially completely removed from the sized fiber.