US PATENT SUBCLASS 536 / 60
.~.~.~.~.~ Xanthate or viscose

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


536 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1.11  DF  .~ Carbohydrates or derivatives {15}
56  DF  .~.~ Cellulose or derivative {4}
58  DF  .~.~.~ Esters {3}
59  DF  .~.~.~.~ Sulfur containing acid {1}
60.~.~.~.~.~ Xanthate or viscose {1}
61  DF  .~.~.~.~.~.~> Subsequent treatment process

DEFINITION

Classification: 536/60

(under subclass 59) Compounds which are cellulose derivatives that include 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. This subclass provides for the colloidal solution as well as the cellulose xanthate. [figure]

SEE OR SEARCH THIS CLASS, SUBCLASS:

57, for regenerated cellulose.