Global patent index - EP 1086158 A1

EP 1086158 A1 2001-03-28 - POLYOL BLEND FOR THE PREPARATION OF OPEN CELL RIGID POLYURETHANE FOAMS

Title (en)

POLYOL BLEND FOR THE PREPARATION OF OPEN CELL RIGID POLYURETHANE FOAMS

Title (de)

POLYOLGEMISCH FÜR DIE HERSTELLUNG VON OFFENZELLIGEN POLYURETHANHARTSCHÄUMEN

Title (fr)

MELANGE DE POLYOLS POUR LA PREPARATION DE MOUSSES DE POLYURETHANE RIGIDE A CELLULES OUVERTES

Publication

EP 1086158 A1 (EN)

Application

EP 99926339 A

Priority

  • EP 99926339 A
  • EP 9903453 W
  • EP 98201681 A

Abstract (en)

[origin: WO9960045A1] Polyol blend comprising: (a) a polyol component having an average hydroxyl value of 150 to 850 mg KOH/g and (b) a polymer polyol comprising a polymer stably dispersed in a base polyol medium, which base polyol medium has an average primary hydroxyl content of less than 20 %. This polyol blend is suitably applied in a process for the preparation of open cell rigid polyurethane foams, wherein it is reacted with a polyisocyanate component in the presence of at least a catalyst, a foam stabilising agent and a blowing agent. The resulting open cell rigid polyurethane foam has a density of less than 50 kg/m<3> and a closed cell content of less than 10 %, preferably of less than 5 % and can suitably be applied as heat insulating material.

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

C08G 18/63; C08G 18/40

IPC 8 full level (invention and additional information)

C08L 71/02 (2006.01); C08G 18/40 (2006.01); C08G 18/48 (2006.01); C08G 18/50 (2006.01); C08G 18/63 (2006.01)

CPC (invention and additional information)

C08G 18/5024 (2013.01); C08G 18/4072 (2013.01); C08G 2101/0025 (2013.01); C08G 2101/005 (2013.01); C08G 2101/0083 (2013.01)

Citation (search report)

See references of WO 9960045A1

Designated contracting state (EPC)

DE DK FR GB IT

EPO simple patent family

WO 9960045 A1 19991125; AU 4363899 A 19991206; CA 2329070 A1 19991125; EP 1086158 A1 20010328; JP 2002515527 A 20020528

INPADOC legal status

2002-09-04 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20020227

2001-11-28 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20011016

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

- Ref Legal Event Code: 17P

- Effective date: 20001016

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

- Ref Legal Event Code: AK

- Designated State(s): DE DK FR GB IT