Liquid reactive compositions comprising polyisocyanates, epoxides and solutions of alkali metal halides in polyoxyalkylenic compounds.

摘要

Reactive compositions liquid at a temperature lower than 70 DEG C, comprising: A) at least one organic polyisocyanate; B) a mono- or poly-epoxide, or a mixture of different mono- and/or polyepoxides; C) a catalyst, liquid at a temperature lower than 70 DEG C, consisting of a solution of at least one alkali metal halide in a polyoxyalkylenic compound or in a mixture of different polyoxyalkylenic compounds, said polyoxyalkylenic compound containing at least one hydroxyl group of alcoholic type. These reactive compositions are able to gel and solidify rapidly at temperatures between 0 and 70 DEG C, to form a glassy polymer of high softening point.