Isocyanic compositions and their use in the preparation of...

Details Isocyanic compositions and their use in the preparation of... Isocyanic compositions and their use in the preparation of...

C - Chemistry, Metallurgy

08

G

C08G 18/32 (2006.01)

Patent

CA 2414515

An isocyanate component with an isocyanate functionality from t15 to 40 % obtained from the reaction of at least one organic isocyanate which is at least bifunctional, with a secondary amine having general formula (I): wherein R1 and R2 are independently the same or different and represent a C1-C8 (iso) alkyl radical and X represents a 4,4' methylenediphenylene radical and wherein the molar ratio between the NCO groups of the said isocyanate and functional amine groups in the amine of formula (I) is from 2 to 10, and use of the component in the preparation of a flexible expanded polyurethane material with endowed flame-resistance.

L'invention concerne un composant isocyanique à fonctionnalité isocyanate comprise entre 15 et 40 %, lequel est obtenu à partir d'une réaction d'au moins un isocyanate organique qui est au moins bifonctionnel avec une amine secondaire de formule générale (I), dans laquelle R¿1? et R¿2? sont, de manière indépendante, identiques ou différents et représentent un radical (iso) alkyle en C¿1?-C¿8? et X désigne un radical 4,4' méthylénédiphénylène et dans laquelle le rapport molaire entre les groupes NCO de l'isocyanate et les groupes amine fonctionnels dans l'amine de formule (I) est compris entre 2 et 10. L'invention concerne également l'utilisation dudit composant dans la préparation d'un matériau souple en polyuréthanne expansé à résistance à la flamme.

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