Abstract: Enzyme granules having an average particle size of from about 1 to about 2.2 mm are disclosed. The enzyme granules comprise an extruded particulate first enzyme component containing at least one enzyme and organic and/or inorganic carrier material and a second particulate enzyme component containing at least one particulate enzyme different from the one enzyme in the said first enzyme component, wherein the second particulate enzyme component is agglomerated onto the particulate first enzyme component, and wherein the average particle size of the particulate first enzyme component is in the range of from about 1.1 to about 3 times the average particle size of the second particulate enzyme component. Furthermore, a process for the preparation of the enzyme granules is disclosed.

Abstract: This invention is directed to the preparation of alkali cellulose. More particularly, this invention is directed to a process for the preparation of alkali cellulose having a low water content, wherein finely divided cellulose suspended in a typical inert organic solvent is presteeped and the cellulose suspension is contacted with an alkali metal hydroxide/alcohol mixture and at least one aqueous alkalization solution of different concentration.

Abstract: This invention is directed to a method for the continuous production of alkyl cellulose by reacting alkali cellulose with alkylating agents in the presence of inert liquids, wherein:(a) powdered cellulose is reacted with aqueous-alcoholic alkali metal hydroxide solution at temperatures of from about 20.degree. to 80.degree. C. to form alkali cellulose;(b) oxygen is completely removed from the alkali cellulose reaction mixture of step (a) and the water content is reduced to about 2.5 to 6.0 moles per anhydroglucose unit; and(c) the reaction mixture from step (b) is reacted with at least a stoichiometric amount, but not more than with a molar excess of up to about 50%, based on the alkali metal hydroxide, of an alkylating agent in an inert liquid boiling at a temperature of from about 80.degree. to 160.degree. C., the reaction being carried out continuously in stirred tanks-in-series with 2 to 10 units.

Abstract: This invention relates to an improved process for preparing cellulose derivatives by alkalizing cellulose to form alkali cellulose, alkylating the alkali cellulose to form alkylated alkali cellulose, and recovering the alkylated alkali cellulose. According to the process of the invention, finely-divided, preferably powdered, cellulose is reacted with an aqueous-alcoholic alkali metal hydroxide solution at a temperature of from about 20.degree. to 120.degree. C., to form alkali cellulose, oxygen is removed, and the water content is reduced to from about 2.5 to 6.0 moles per anhydroglucose unit, prior to alkylization.