Title:
FLEXIBLE POLYURETHANE FOAM
Document Type and Number:
WIPO Patent Application WO2005108455
Kind Code:
A3
Abstract:
Flexible polyurethane foam is made by mixing prepolymer with foam-forming ingredients comprising isocyanate and water which react to give carbon dioxide. The prepolymer is hydroxyl-tipped, being made by reacting polyol with less than the theoretical proportion of isocyanate required to react with available hydroxyl groups of the polyol. The prepolymer is a new storage stable starting material for use in making flexible polyurethane foam, and the foam produced with the prepolymer has advantageous properties with regard to hydrolysis resistance. The prepolymer may be made with low or high viscosity by appropriate selection of the proportion of isocyanate which reacts with the polyol. At high viscosities cell structure can be advantageously controlled by appropriate gasification or degasification during foaming.
Inventors:
FREI HANS (CH)
MISPREUVE HENRI (CH)
NAESCHER REINOLD (CH)
SCHOENENBERGER KURT (CH)
TENZI STEFANO (CH)
MISPREUVE HENRI (CH)
NAESCHER REINOLD (CH)
SCHOENENBERGER KURT (CH)
TENZI STEFANO (CH)
Application Number:
PCT/EP2005/005314
Publication Date:
March 09, 2006
Filing Date:
May 12, 2005
Export Citation:
Assignee:
NAUER FRITZ AG (CH)
FREI HANS (CH)
MISPREUVE HENRI (CH)
NAESCHER REINOLD (CH)
SCHOENENBERGER KURT (CH)
TENZI STEFANO (CH)
FREI HANS (CH)
MISPREUVE HENRI (CH)
NAESCHER REINOLD (CH)
SCHOENENBERGER KURT (CH)
TENZI STEFANO (CH)
International Classes:
C08G18/10; C08G18/00; C08G18/48; C08G18/50; C08J9/02; C08J9/12
Foreign References:
| EP1380608A1 | 2004-01-14 | |||
| US20030134923A1 | 2003-07-17 |
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