US PATENT SUBCLASS 106 / 166.01
.~.~.~ Cellulose xanthate or viscose

Current as of: June, 1999
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106 /   HD   COMPOSITIONS: COATING OR PLASTIC

*  DD  COATING OR PLASTIC COMPOSITIONS {40}
162.1  DF  .~ Carbohydrate or derivative containing {15}
163.01  DF  .~.~ Cellulosic material {11}
166.01.~.~.~ Cellulose xanthate or viscose {8}
166.1  DF  .~.~.~.~> With organic compound containing silicon
166.2  DF  .~.~.~.~> With phosphorus compound
166.3  DF  .~.~.~.~> With organic compound containing sulfur {1}
166.4  DF  .~.~.~.~> With organic compound containing nitrogen {2}
166.5  DF  .~.~.~.~> With organic compound containing oxygen {2}
166.6  DF  .~.~.~.~> With organic compound containing halogen
166.7  DF  .~.~.~.~> With bituminbous or tarry residue or hydrocarbon (e.g., petroleum fraction, paraffin, olefin, acetylene, etc.)
166.8  DF  .~.~.~.~> With element or inorganic compound except water {2}

DEFINITION

Classification: 106/166.01

Cellulose xanthate or viscose:

(under subclass 163.01) Compositions wherein the cellulosic material contains the group: [figure]

(1) Note. The viscose process is based on the reaction of carbon disulfide with the sodium salt of cellulose to yield a xanthate, which forms a viscous colloidal solution in dilute aqueous alkali. [figure]

SEE OR SEARCH CLASS

264, Plastic and Nonmetallic Article Shaping or Treating: Processes,

188+, for processes of forming indefinite or continuous length articles from viscose spinning solutions by extrusion thereof into a specified precipitating medium as defined, see Class 264 definitions, Lines With Other Classes, "Lines With The Chemical Composition Classes," (5). Where an additive is included in a molding composition or a treating bath for purposes of preventing fouling of equipment see Class 264, subclass 170.

536, Organic Compounds,

60+, for viscose, per se, and its subsequent treatment.