Title:
【発明の名称】ポリサッカライドをベースとするポリカルボキシレートを製造するための流動床酸化方法
Document Type and Number:
Japanese Patent JPH09508168
Kind Code:
A
Abstract:
PCT No. PCT/EP95/00227 Sec. 371 Date Jul. 31, 1996 Sec. 102(e) Date Jul. 31, 1996 PCT Filed Jan. 23, 1995 PCT Pub. No. WO95/20608 PCT Pub. Date Aug. 3, 1995A process for producing polycarboxylic acids or their salts from polysaccharides is provided. Solid particulate polysaccharides having at least one primary alcohol group in the polysaccharides are oxidized with nitrogen dioxide in a fluid bed. The fluidizing gas contains nitrogen dioxide and the process is operated at a pressure of from 0.5 to 12 bars and a temperature between the boiling point of nitrogen dioxide and 160 DEG C. At least two moles of nitrogen dioxide for the equivalent of the primary alcohol groups reacted over the entire reaction are provided.
Inventors:
Engelskirchen, Konrad
Fischer, Herbert
Utner, Werner
Fairholt, Hans-Wilhelm
Mellor, Thomas
Fischer, Herbert
Utner, Werner
Fairholt, Hans-Wilhelm
Mellor, Thomas
Application Number:
JP51987595A
Publication Date:
August 19, 1997
Filing Date:
January 23, 1995
Export Citation:
Assignee:
Henkel Commandet Gezelshaft Auf Akchen
International Classes:
C08B15/04; C08B31/18; C08B37/00; C11D3/20; C11D3/22; C11D3/37; (IPC1-7): C08B37/00; C08B15/04; C08B31/18; C11D3/20; C11D3/37
Attorney, Agent or Firm:
Aoyama Ryo (2 outside people)