C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 9/00 (2006.01) C08G 18/48 (2006.01) C08G 18/50 (2006.01) C08K 3/04 (2006.01) C08K 5/06 (2006.01) C08K 5/52 (2006.01)
Patent
CA 2350824
The present invention relates to a process for the production of rigid polyurethane foams containing exfoliating graphite. In a preferred embodiment the foams of the present invention pass severe flame retardant tests such as the M1 burning test. Foams which pass the M1 burning test are produced by reacting a polyisocyanate, a polyol, a halogenated polyol, in the presence of a blowing agent, a catalyst, exfoliating graphite and additional flame retardants selected from phosphonate esters, phosphate esters, halogenated phosphate ester or a combination thereof.
L'invention concerne un processus de fabrication de mousse de polyuréthanne rigide contenant du graphite exfolié. Dans un mode de réalisation préféré, les mousses de la présente invention passent avec succès des tests d'ignifugation très strictes tels que le test de combustion M1. On produit les mousses qui passent le test M1 en faisant réagir un polyisocyanate, un polyol, un polyol halogéné en présence d'un agent de gonflage, d'un catalyseur, de graphite exfolié et d'agents d'ignifugation supplémentaires sélectionnés parmi les esters de phosphonate, les esters de phosphate, les esters de phosphate halogénés ou une combinaison de ceux-ci.
Dow Global Technologies Inc.
Smart & Biggar
The Dow Chemical Company
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