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US 6,884,883 B1Granted
Method for reducing pulp to powder and process for the production of a cellulose ether
AssigneeShin-Etsu Chemical Co., Ltd.
InventorsYukio Shima, Mitsuo Narita, Atsushi Hatayama
Life of this patent
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Abstract
Pulp is ground by means of a vertical roller mill. The average particle diameter of the resulting powdered pulp is adjusted to 20-300 μm. The powdered pulp thus obtained is used as a starting material for the production of cellulose ethers.
Claims6
A method for reducing pulp to powder which comprises grinding pulp or means of a vertical roller mill to produce powdered pulp, wherein the pulp is selected from the group consisting of cotton linter pulp and wood pulp.
Dependencies are inferred from the claim text.