Title:
粉砕及び乾燥したセルロースエーテルを酸-酸化分解することによって低粘度セルロースエーテルを製造する方法
Document Type and Number:
Japanese Patent JP2005502740
Kind Code:
A
Abstract:
A method for the depolymerization of cellulose ethers by acid oxidative decomposition. Ground and dried cellulose ether is exposed to gaseous acid or is sprayed with an acid solution. It is brought into contact with an oxidizing agent or an oxidizing agent solution, and depolymerized at temperatures in the range from 50 to 120° C. over a period in the range from 0.01 to 10 hours. The acid is subsequently neutralized by adding a base. The water content of the reaction mixture does not exceed 10% by weight during depolymerization.
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Inventors:
Hammes Alf
Application Number:
JP2003523496A
Publication Date:
January 27, 2005
Filing Date:
August 21, 2002
Export Citation:
Assignee:
S.A.Tirose Gesellschaft Mito Beschlenktel Haftung und Companie Commande Geselshaft
International Classes:
C08B11/20; C08B15/00; (IPC1-7): C08B11/20
Attorney, Agent or Firm:
Mitsufumi Esaki
Tsuneo Mihara
Okumura Yoshimichi
Blacksmith
Tsuneo Mihara
Okumura Yoshimichi
Blacksmith