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): where in 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 where in 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 wi th endowed flame-resistance.