Global Patent Index - EP 0977802 A1

EP 0977802 A1 2000-02-09 - METHOD FOR PRODUCING CELLULOSE SHAPED BODIES

Title (en)

METHOD FOR PRODUCING CELLULOSE SHAPED BODIES

Title (de)

VERFAHREN ZUR HERSTELLUNG CELLULOSISCHER FORMKÖRPER

Title (fr)

PROCEDE DE PRODUCTION DE CORPS MOULES CELLULOSIQUES

Publication

EP 0977802 A1 (DE)

Application

EP 98916619 A

Priority

  • AT 9800108 W
  • AT 70597 A

Abstract (en)

[origin: WO9849223A1] The invention relates to a method for producing cellulose flat sheets and cellulose membranes in the form of flat membranes. By this method, a solution of cellulose in an aqueous tertiary amino oxide is extruded by means of an extrusion die having an extrusion gap, the solution taking the shape of a sheet, and is passed via an air gap into a regenerating bath. The method is characterized in that an extrusion die having an extrusion gap at least 40 cm long is used.

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

C08J 5/18; B29C 55/08; B29D 7/01

IPC 8 full level (invention and additional information)

B29C 47/14 (2006.01); B29C 55/08 (2006.01); B29D 7/01 (2006.01); C08J 5/18 (2006.01); B29C 47/00 (2006.01)

CPC (invention and additional information)

C08J 5/18 (2013.01); B29C 47/14 (2013.01); B29C 55/08 (2013.01); B29D 7/01 (2013.01); B29C 47/00 (2013.01); B29C 47/0019 (2013.01); B29C 47/0026 (2013.01); B29K 2001/00 (2013.01); B29K 2001/12 (2013.01); C08J 2301/02 (2013.01)

Citation (search report)

See references of WO 9849223A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9849223 A1 19981105; AT 404731 B 19990225; AT A70597 A 19980615; AU 7012498 A 19981124; EP 0977802 A1 20000209; US 6177035 B1 20010123

INPADOC legal status


2001-09-05 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20010222

2000-08-30 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20000711

2000-02-09 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991125

2000-02-09 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE