Title:
【発明の名称】セルロース成形体の製造方法
Document Type and Number:
Japanese Patent JP2703117
Kind Code:
B2
Abstract:
PCT No. PCT/AT95/00022 Sec. 371 Date Aug. 14, 1995 Sec. 102(e) Date Aug. 14, 1995 PCT Filed Feb. 1, 1995 PCT Pub. No. WO95/23885 PCT Pub. Date Sep. 8, 1995The invention is concerned with a process for the production of cellulose molded bodies. This process has the following steps: (A) dissolving cellulose in an aqueous solution of a tertiary amine-oxide to produce a moldable cellulose solution, (B) molding said cellulose solution and conducting said molded cellulose solution into an aqueous precipitation bath, wherein the cellulose is precipitated, thus producing a molded body and a spent precipitation bath, and (C) purifying said spent precipitation bath by contacting said precipitation bath with an ion exchanger, thus producing a purified aqueous amine-oxide solution which, optionally after concentration, is re-used again in step (A) as a cellulose solvent. In this process, the ion exchanger comprises a cellulose carrier which has attached groups which are capable of exchanging ions.
Inventors:
Cult, Wolfram
Filgo, Heinrich
Menner, Johann
Mule Radar, Eduard
Mangeng, Bruno
Nigus, Arnold
Schweninger, Franz
Schlenpf, Christoph
Filgo, Heinrich
Menner, Johann
Mule Radar, Eduard
Mangeng, Bruno
Nigus, Arnold
Schweninger, Franz
Schlenpf, Christoph
Application Number:
JP52255895A
Publication Date:
January 26, 1998
Filing Date:
February 01, 1995
Export Citation:
Assignee:
Renting Akchen Gezel Shaft
International Classes:
B01J39/22; B01J41/16; D01F2/02; C07C291/04; C08B1/00; C08J3/09; C08J5/00; C08L1/02; D01F2/00; D01F13/02; (IPC1-7): C08J5/00; D01F2/00
Attorney, Agent or Firm:
Atsushi Nakajima (4 people outside)