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. 07, 1978
Filed:
Sep. 15, 1976
Applicant:
Inventors:
Christian Pieper, Neuss, DE;
Hans Uhlemann, Solingen, DE;
Karlheinz Feltgen, Dormagen, DE;
Klaus Nickel, Dormagen, DE;
Alfred Nogaj, Dormagen, DE;
Gunter Lorenz, Dormagen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01F / ;
U.S. Cl.
CPC ...
264233 ; 821375 ; 68 / ; 264206 ;
Abstract
The invention relates to a process for continuously removing residual solvent from filaments of dry-spun acrylonitrile polymers to values of below 2% by weight of solvent by a multi-stage hot-wash with low quantities of water.