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. 25, 1997
Filed:
Apr. 24, 1995
Applicant:
Inventor:
E Peter Lancaster, Gig Harbor, WA (US);
Assignee:
Weyerhaueser Company, Federal Way, WA (US);
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C09D / ;
U.S. Cl.
CPC ...
10616301 ; 10616601 ;
Abstract
A cellulose dope prepared by subjecting a slurry of cellulose to cavitation either before, during or after treatment with a solvent. The cavitation results in the efficient fibrillization or delamination of the pulp fibers by peeling back the layers of fiber. The cavitation makes the fibers highly accessible to solvents for dissolution. One preferred cellulose solvent is sodium hydroxide at soda cellulose Q condition.