xanthationn.
/zanˈθeɪʃən/ Chemistry.
A stage in the viscose process for making rayon, in which alkali-cellulose is treated with carbon disulphide to form cellulose xanthate.
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xanthation1927
xanthating1952
1927 T. Woodhouse Artificial Silk: Manuf. & Uses iv. 30 The larger quantity of Viscose silk is made from wood-pulp... This process is termed Xanthation.
1962 J. T. Marsh Self-smoothing Fabrics iv. 30 When xanthation is complete, the solid is dissolved in dilute caustic soda.
1978 Nature 12 Oct. 530/1 Mechanically pulped wood or papers are not generally useful, as the structure resists solution after xanthation.
Derivatives
ˈxanthate v. (transitive) to cause to undergo xanthation; also absol.
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the world > matter > chemistry > chemical reactions or processes > subject to chemical reactions or processes [verb (transitive)] > subject to named chemical reaction or process > subject to xanthation
xanthate1952
1952 U.S. Patent 2,592,355 1 In manufacturing viscose-rayon fiber, a low cellulose, high alkali and low viscosity is prepared..by xanthating and dissolving same in usual way.
1962 J. T. Marsh Self-smoothing Fabrics iv. 30 The crumbs of alkali-cellulose are then xanthated by treatment with carbon disulphide in a rotating churn for about 3 to 4 hr.
xanˈthated adj.
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the world > matter > chemistry > chemical reactions or processes > [adjective] > of or relating to named chemical reactions or processes > of or relating to xanthation > having undergone
xanthated1938
1938 Thorpe's Dict. Appl. Chem. (ed. 4) II. 465/2 Surplus carbon disulphide is removed..and the xanthated crumbs are then dispersed by churning with NaOH solution.
1964 V. E. Yarsley et al. Cellulosic Plastics x. 149 The xanthated cellulose.
1978 Jrnl. Appl. Polymer Sci. 22 897 Starch polyampholytes (xanthated starch amines)..were prepared, characterized, and evaluated as wet- and dry-strength agents in paper handsheets.
1983 Jrnl. Macromolecular Sci.: Chem. A. 20 218 Partially xanthated cellulose.
xanˈthating n.
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the world > matter > chemistry > chemical reactions or processes > [noun] > chemical reactions or processes (named) > xanthation
xanthation1927
xanthating1952
1952 U.S. Patent 2,592,355 4 Without subjecting to aging, it is xanthated in a xanthating apparatus.
1964 V. E. Yarsley et al. Cellulosic Plastics x. 149 The aged alkali-cellulose is charged to the xanthating churns, which rotate slowly.
This entry has not yet been fully updated (first published 1933; most recently modified version published online September 2018).
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n.1927