C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 75/04 (2006.01) C08J 9/00 (2006.01) C08J 9/04 (2006.01) C08K 5/09 (2006.01)
Patent
CA 2106796
It has been found that in addition to acting as an auxiliary blowing agent, various salts of formic acid may be used to tailor the reactivity characteristics of rigid, polyurethane foam formulation. Salts of particular interest are: ammonium formate, sodium formate, and potassium formate. By varying amounts and combinations of the above salts, characteristics of a formulation's reactivity such as cream time, gel time, rise time, and tack-free time may be manipulated.
On a découvert qu'en plus d'agir comme agent d'expansion auxiliaire, divers sels de l'acide formique peuvent être utilisés pour adapter les caractéristiques réactionnelles de formulations de mousse de polyuréthane rigide. Les sels présentant un intérêt particulier sont les suivants : formate d'ammonium, formate de sodium et formate de potassium. En faisant varier les quantités et les combinaisons de ces sels, on peut faire varier des caractéristiques de la formulation, comme le temps de crémage, le temps de gélification, le temps de levée et le temps de séchage hors poisse.
Christman Donald L.
Reichel Curtis J.
Basf Corporation
Christman Donald L.
Reichel Curtis J.
Robic
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