Global Patent Index - EP 1237985 A1

EP 1237985 A1 2002-09-11 - METHOD FOR WORKING UP POLYETHER ALCOHOLS

Title (en)

METHOD FOR WORKING UP POLYETHER ALCOHOLS

Title (de)

VERFAHREN ZUR AUFARBEITUNG VON POLYETHERALKOHOLEN

Title (fr)

PROCEDE DE TRAITEMENT DE POLYETHERALCOOLS

Publication

EP 1237985 A1 (DE)

Application

EP 00979572 A

Priority

  • DE 19957105 A
  • EP 0011342 W

Abstract (en)

[origin: WO0138421A1] The invention relates to a method for working up polyether alcohols which may be produced by the catalytic addition of alkylene oxides to H-functional starting materials. Said method is characterised in that at least one multi-metal cyanide compound is employed as catalyst and that the catalyst is separated by sedimentation from the polyether alcohol, after the addition of the alkylene oxide.

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

C08G 65/26; B01J 27/26; C08G 65/30

IPC 8 full level (invention and additional information)

B01J 27/26 (2006.01); C08G 65/26 (2006.01); C08G 65/28 (2006.01); C08G 65/30 (2006.01)

CPC (invention and additional information)

B01J 27/26 (2013.01); C08G 65/2663 (2013.01); C08G 65/30 (2013.01)

Citation (search report)

See references of WO 0138421A1

Designated contracting state (EPC)

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

EPO simple patent family

WO 0138421 A1 20010531; AU 1701201 A 20010604; DE 19957105 A1 20010531; EP 1237985 A1 20020911

INPADOC legal status


2005-03-23 [18W] APPLICATION WITHDRAWN

- Effective date: 20050131

2004-01-07 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20031125

2002-09-11 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020426

2002-09-11 [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 TR

2002-09-11 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI