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:
Jul. 09, 2019
Filed:
Dec. 28, 2015
Applicant:
Cytec Industries Inc., Woodland Park, NJ (US);
Inventor:
Thomas B Taylor, Greenville, SC (US);
Assignee:
Cytec Industries Inc., Woodland Park, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01F 9/22 (2006.01); D01D 5/14 (2006.01); D01D 5/06 (2006.01);
U.S. Cl.
CPC ...
D01F 9/225 (2013.01); D01D 5/06 (2013.01); D01D 5/14 (2013.01); D01F 9/22 (2013.01); D10B 2101/12 (2013.01);
Abstract
Provided herewith is a process for improving tensile strength of precursor PAN fiber during the spinning stage in the manufacturing process. According to the process of the present invention, precursor fiber is made denser as it enters each wash bath. This progressive densification approach is useful for all PAN precursor bath draw/wash processes where a need for careful control of fiber network density and structure is required for improved carbon fiber properties.