Global Patent Index - EP 1037936 A1

EP 1037936 A1 2000-09-27 - PROCESS FOR PREPARING POLYETHER POLYOLS AND POLYOLS PREPARED THEREWITH

Title (en)

PROCESS FOR PREPARING POLYETHER POLYOLS AND POLYOLS PREPARED THEREWITH

Title (de)

HERSTELLUNGSVERFAHREN FÜR POLYETHERPOLYOLE UNS DAMIT HERGESTELLTE POLYOLE

Title (fr)

PROCEDE DE PREPARATION DE POLYETHERPOLYOLS ET POLYOLS PREPARES AVEC CETTE PROCEDE

Publication

EP 1037936 A1 (EN)

Application

EP 98967113 A

Priority

  • US 9824332 W
  • US 6531697 P

Abstract (en)

[origin: WO9947581A1] Polyether polyols suitable for use in preparing rigid polyurethane foam are prepared by a process utilizing imidazole catalysts. The imidazole catalysts do not lose reactivity at higher tempera tures and can be used at higher temperatures to prepare polyols thereby decreasing residence time and energy consumption in polyol production processes.

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

C08G 65/26; C08G 18/48

IPC 8 full level (invention and additional information)

C08G 18/48 (2006.01); C08G 18/50 (2006.01); C08G 65/26 (2006.01)

CPC (invention and additional information)

C08G 65/2696 (2013.01); C08G 18/5021 (2013.01); C08G 65/2606 (2013.01); C08G 65/2672 (2013.01); C08G 2101/0025 (2013.01)

Citation (search report)

See references of WO 9947581A1

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB IT LI NL PT SE

EPO simple patent family

WO 9947581 A1 19990923; AR 017610 A1 20010912; AU 5264199 A 19991011; BR 9813280 A 20000822; CA 2309138 A1 19990923; CN 1278838 A 20010103; CO 5050318 A1 20010627; EP 1037936 A1 20000927; ID 24600 A 20000727; JP 2002506897 A 20020305; PL 340826 A1 20010226; TR 200001289 T2 20001121; ZA 9810410 B 20000515

INPADOC legal status


2002-04-03 [18W] WITHDRAWN

- Date of withdrawal: 20020204

2000-11-22 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20001010

2000-09-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000613

2000-09-27 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE DK ES FR GB IT LI NL PT SE