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:
Apr. 09, 1985
Filed:
Aug. 26, 1983
Applicant:
Inventors:
Assignee:
Japan Exlan Company Limited, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D01D / ; D01F / ; D01F / ;
U.S. Cl.
CPC ...
2641 / ; 264182 ; 2642108 ; 264211 ; 2642893 ;
Abstract
The present invention provides an industrial process for producing acrylic fibers having non-circular cross-sections which are excellent in gloss, softness, etc. In this process, which is a wet-spinning method using an inorganic solvent, a particular acrylonitrile polymer solution is spun through a spinnerette having circular spinning orifices. The steps of spinning, coagulation, water-washing and wet-heat stretching are carried out in integral combination and under specific conditions.