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:
Aug. 26, 2003
Filed:
May. 15, 2001
Applicant:
Inventors:
Assignee:
Alceru Schwarza GmbH, Rudolstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 1/02 ; C08L 1/06 ; B29B 7/30 ; B29B 7/34 ; B29B 7/44 ;
U.S. Cl.
CPC ...
C08L 1/02 ; C08L 1/06 ; B29B 7/30 ; B29B 7/34 ; B29B 7/44 ;
Abstract
A procedure to continuously produce a suspension of cellulose in aqueous N-methylmorpholine-N-oxide is characterized in that: (a) The cellulose is conveyed through a first shearing zone in the absence of N-methylmorpholine-N-oxide and is homogenized, and (b) the homogenized cellulose is conveyed through a second shearing zone after adding enough aqueous N-methylmorpholine-N-oxide for a suspension to result in a N-methylmorpholine-N-oxide content in the liquid phase of 70-80 weight percent after mixing, whereby the cellulose or suspension almost completely fills the available content cross-section in the shearing zones.