Isocyanate compositions and their use in the preparation of expanded polyurethane materials with endowed flame-resistance

摘要

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.