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1. (WO2001030880) PROCESS FOR THE PREPARATION OF A RIGID POLYURETHANE FOAM

Pub. No.:    WO/2001/030880    International Application No.:    PCT/EP2000/008941
Publication Date: Fri May 04 01:59:59 CEST 2001 International Filing Date: Thu Sep 14 01:59:59 CEST 2000
IPC: C08G 18/18
C08G 18/83
Applicants: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
ZARKA, Philippe, Etienne
KELLNER, Juergen
MORTON, Patrick, Robert, Andre, Rene
Inventors: ZARKA, Philippe, Etienne
KELLNER, Juergen
MORTON, Patrick, Robert, Andre, Rene
Title: PROCESS FOR THE PREPARATION OF A RIGID POLYURETHANE FOAM
Abstract:
Process for the preparation of a rigid polyurethane foam by reacting a suitable polyisocyanate with a polyol component comprising from 1 to 45 wt % of recycled polyol in the presence of water and a suitable urethane catalyst and optionally usual auxiliaries, characterised in that the urethane catalyst comprises benzyl dimethylamine in an amount of from 1 to 10 parts by weight per 100 parts by weight of polyol component.