C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
403/33
C08K 5/21 (2006.01) C08G 18/38 (2006.01) C08G 18/40 (2006.01) C08J 9/00 (2006.01) C08K 5/16 (2006.01) C08K 5/315 (2006.01)
Patent
CA 1308862
ABSTRACT "Flexible polyurethane foam having a fire resistance". A flexible highly elastical polyurethane foam having a density ranging between 25 and 150 kg/m3and a relatively high fire resistance obtained by the reaction of an isocyanate and/or a chemically modified derivate thereof with a highly molecular reactive polyol in presence of a catalytic agent, of a cross-linker, and/or an extender, of water as blast means and of a fire retardant, characterized in that said fire retardant comprises at least one of the following components : 1) linear urea-formol oligomer mixture having the general formula NH2-CO-NH-[CH2-NH-CO-NH]n-CH2-NH-CO-NH2, wherein n can have the value from 0 to 50; 2) urea in powdered form of which the particles are at least partially recovered by a less soluble film, as well of sulfur as of a resin; 3) dicyandiamide having the general formula : Image
577445
Du Prez Eddie
Jourquin Lucien
Du Prez Eddie
Gechem
Gowling Lafleur Henderson Llp
Jourquin Lucien
Recticel
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