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, 1996
Filed:
Mar. 23, 1995
Applicant:
Inventors:
Michael C Quigley, Coventry, GB;
Rainer F Naef, Dietikon, CH;
Assignee:
Courtaulds Fibres (Holdings) Limited & Buss AG, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
159 49 ; 159-61 ; 159 131 ; 159D / ; 159D / ; 203 14 ; 203 89 ; 536 553 ; 536127 ;
Abstract
A solution of cellulose is formed by moving a premix of a tertiary amine N-oxide, water and cellulose through a thin-film evaporator using a bladed rotor under treatment conditions which specify, inter alia, an area of heated surface (1 m.sup.2 to 125 m.sup.2), a blade speed (2.5 to 8 m/sec), a pressure (25 to 100 mb) and a temperature (90.degree. to 135.degree. C.).