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:
Sep. 22, 2009
Filed:
Jun. 25, 2007
Applicants:
S. Ananda Weerawarna, Seattle, WA (US);
Su Bing, Federal Way, WA (US);
Inventors:
S. Ananda Weerawarna, Seattle, WA (US);
Su Bing, Federal Way, WA (US);
Assignee:
Weyerhaeuser NR Company, Federal Way, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 1/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for making crosslinked fibers containing cellulose fibers in which an aqueous solution comprising a carboxyalkyl cellulose and a galactomannan polymer or a glucomannan polymer in water is treated with a first crosslinking agent to provide a gel; the gel mixed with a water-miscible solvent to provide mixed polymer fibers; cellulose fibers are added to the mixed polymer fibers; and these fibers are treated with a second crosslinking agent to provide crosslinked fibers.