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:
Feb. 20, 1979
Filed:
Dec. 14, 1977
Applicant:
Inventor:
Hermann Lohwasser, Dormagen, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526341 ; 264206 ; 428364 ; 526342 ;
Abstract
The invention relates to dry-spun polyacrylonitrile filament yarns having a tensile strength of at least 47 cN/tex and an individual filament denier of at most 1.5 dtex and preferably an overall denier of 20 to 145 tex as well as to a process for the production thereof by spinning, hot drawing and relaxing, wherein the spun filaments are drawn during spinning to such an extent that, after subsequent hot drawing in a ratio of from 1:6 to 1:10 and relaxation, the individual filaments have a denier of at most 1.6 dtex.