C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/18 (2006.01) C08G 18/40 (2006.01) C08G 18/80 (2006.01)
Patent
CA 2429052
An improved process to enhance polyurethane foam performance is described. Polyurethane foam is prepared by reactions between a polyisocyanate and an active hydrogen-containing component wherein said reactions are conducted in the presence of catalysts composed of at least one specific tertiary amine carbamate (formed by the reaction of reactive tertiary amine and polyisocyanate) and, optionally, salts formed by the reaction between the specific tertiary amine carbamate(s) and hydroxy- and/or halo-carboxylic acids. The specific tertiary amine carbamates in the subject invention are dimethylaminoethoxyethyl carbamate, bis(dimethylaminopropyl)amino-2-propyl carbamate, dimethylaminoethyl carbamate, and mixtures thereof.
L'invention concerne un procédé avancé pour améliorer les performances d'une mousse de polyuréthanne. On prépare la mousse de polyuréthanne par la réaction entre un polyisocyanate et un composant contenant de l'hydrogène actif, lesdites réactions étant conduites en présence de catalyseurs composés d'au moins un carbamate d'amine tertiaire spécifique (formé par la réaction d'une amine tertiaire réactive et de polyisocyanate) et éventuellement de sels formés par la réaction entre le ou les carbamate(s) d'amine tertiaire spécifique et des acides hydroxy- et/ou halo-carboxyliques. Les carbamates d'amine tertiaire spécifique de la présente invention sont diméthylaminoéthoxyéthyl carbamate, bis(diméthylaminopropyl)amino-2-propyl carbamate, diméthylaminoéthyl carbamate et leurs mélanges.
El Ghobary Hassan
Muller Louis
Crompton Corporation
Gowling Lafleur Henderson Llp
Momentive Performance Materials Inc.
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