Patents by Inventor Arkady Stavtsov

Arkady Stavtsov has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of producing a viscose solution
    Patent number: 6068689
    Abstract: The invention is a method of producing a viscose solution by______________________________________ a) irradiating .alpha.-cellulose with ionizing particles, b) mercerizing the irradiated .alpha.-cellulose with alkali, c) xanthating the irradiated mercerized .alpha.-cellulose with an amount less than 28% of carbon disulfide based on the weight of .alpha.-cellulose, and d) dissolving the xanthated .alpha.-cellulose in an aqueous alkali solution; ______________________________________and adding at least one surfactant before or after one or more steps of the method. The surfactant is chosen from the group consisting of a water soluble nonionic and a cationic surfactant, and it is added to the process in an amount of 0.02-5% by weight of the amount of .alpha.-cellulose. The viscose solution has suitable properties for the production of regenerated cellulose fibers.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: May 30, 2000
    Assignee: Akzo Nobel Surface Chemistry, AB
    Inventors: Kent Bjur, Anders Cassel, Ingemar Uneback, Arkady Stavtsov