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. 17, 1976
Filed:
Mar. 21, 1975
Applicant:
Inventors:
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; D01F / ;
U.S. Cl.
CPC ...
526341 ; 264206 ; 2642 / ; 264235 ;
Abstract
The invention relates to a process for the production of polyacrylonitrile tows containing from 7 - 15 % by weight, preferably from 10 - 12 % by weight, of comonomer components from which it is possible to produce yarns having low boiling-induced shrinkage values and yarns and dimensionally stable made-up articles with improved textile properties which comprises reducing the tow-shrinkage emanating from the spinning and stretching process by 80 - 95 % of the original tow shrinkage by heat-fixing and eliminating subsequently the residual shrinkage by fixing with saturated steam.