Title:
【発明の名称】多糖系ポリカルボキシレートの製造方法
Document Type and Number:
Japanese Patent JPH08510494
Kind Code:
A
Abstract:
PCT No. PCT/EP94/01599 Sec. 371 Date Mar. 18, 1997 Sec. 102(e) Date Mar. 18, 1997 PCT Filed May 17, 1994 PCT Pub. No. WO94/28030 PCT Pub. Date Dec. 8, 1994A continuous process for the production of polycarboxylic acids or salts thereof from polysaccharides involving contacting a polysaccharide with an oxidizing agent selected from the group consisting of nitrogen dioxide, dinitrogen tetroxide, or an equilibrium mixture thereof in the absence of oxygen at a temperature above 80 DEG C. and at a pressure of from about 3 bar to about 15 bar absolute and for a tirne period of from about 1 to about 30 minutes to form a reducd gaseous product and a polysaccharide product wherein the primary alcohol groups of said polysaccharide product are at least partially converted to carboxyl groups.
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Inventors:
Engelschkirchen, Conrat
Fischer, Herbert
Fischer, Herbert
Application Number:
JP50017795A
Publication Date:
November 05, 1996
Filing Date:
May 17, 1994
Export Citation:
Assignee:
Henkel Commandet Gezelshaft Auf Akchen
International Classes:
C08B15/04; C08B31/18; C11D3/22; (IPC1-7): C08B31/18; C08B15/04; C11D3/22
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)