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. 02, 1985
Filed:
Nov. 30, 1983
Applicant:
Inventors:
Johan Selin, Helsinki, FI;
Jouko Huttunen, Porvoo, FI;
Olli Turunen, Porvoo, FI;
Vidar Eklund, Porvoo, FI;
Kurt Ekman, Porvoo, FI;
Assignee:
Neste Oy, , FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08B / ;
U.S. Cl.
CPC ...
106203 ; 106186 ; 536 30 ;
Abstract
The invention relates to cellulose carbamate solutions having improved capacity for fiber spinning or film formation therefrom. The addition of urea to the aqueous alkali in which the cellulose carbamate is dissolved results in an increase in the amount of cellulose carbamate that can be dissolved and a decrease in the viscosity and clogging number of the solution as compared to such solutions without urea.