Global Patent Index - EP 1086139 A1

EP 1086139 A1 2001-03-28 - CELLULOSIC SOLUTIONS AND THEIR USES

Title (en)

CELLULOSIC SOLUTIONS AND THEIR USES

Title (de)

CELLULOSELÖSUNGEN UND DEREN VERWENDUNG

Title (fr)

SOLUTIONS CELLULOSIQUES ET LEUR UTILISATION

Publication

EP 1086139 A1 (EN)

Application

EP 99922339 A

Priority

  • GB 9901566 W
  • GB 9810778 A

Abstract (en)

[origin: WO9960026A1] Solutions are disclosed which comprise (a) cellulose, (b) a tertiary amine N-oxide solvent for the cellulose, (c) a solution processability-enhancing amount of at least one co-solvent, miscible with the tertiary amine N-oxide, which is an amide selected from the group consisting of compounds of the formula R<1>CONHR<2> in which either (i) R<1> represents H or C1-C3 alkyl and R<2> represents H or methyl or (ii) R<1> and R<2> together represent 1,3-propylene, and, if desired, (d) a cellulose solubility-enhancing amount of water. Methods of manufacturing shaped cellulosic articles from such solutions are also disclosed.

IPC 1-7 (main, further and additional classification)

C08B 1/00; C08J 5/18; C08L 1/02; D01F 2/00

IPC 8 full level (invention and additional information)

C08B 1/00 (2006.01); D01F 2/00 (2006.01)

CPC (invention and additional information)

D01F 2/00 (2013.01); C08B 1/003 (2013.01)

Citation (search report)

See references of WO 9960026A1

Designated contracting state (EPC)

AT DE ES FR GB IT

EPO simple patent family

WO 9960026 A1 19991125; AU 3944199 A 19991206; EP 1086139 A1 20010328; GB 9810778 D0 19980715

INPADOC legal status


2002-10-02 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020322

2001-07-04 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010528

2001-03-28 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001211

2001-03-28 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT DE ES FR GB IT