Patent ID: 6392033
Filing Date: 2002-05-21
Classification: C08B

Abstract:
A process for producing viscose, which comprises the steps of:a) treating cellulosic material with electrons to manufacture an electron-treated cellulosic material; b) dispersing the electron-treated cellulosic material in an aqueous solution of caustic soda to produce an alkali cellulose; c) removing excess caustic soda from the alkali cellulose; d) xanthating the alkali cellulose obtained in step c) by reaction with carbon disulfide to produce cellulose xanthate; and e) dissolving the cellulose xanthate formed in step d) in an aqueous solution of a lye, wherein the caustic soda used in step b was previously used in the alkalization of electron-untreated cellulose and treated such that the level of dispersed solids in the caustic soda does not exceed 0.16 g/l.