2-oxo-1,3-dioxolane-4-carboxamide building blocks, their preparation and use

摘要

The present invention suggests a 2-oxo-1,3-dioxolane-4-carboxamide of formula (I),
wherein R is an n-valent radical, n is an integer from 2 to 10 and x is an integer from 1 to n-1. The invention furthermore suggests a process for the preparation of the 2-oxo-1,3-dioxolane-4-carboxamide of formula (I) from 2-oxo-1,3-dioxolane-4-carboxylic acid of formula (II)
with a polyisocyanate of the formula R(NCO) n , where R and n have the meanings given, and the use of the 2-oxo-1,3-dioxolane-4-carboxamide of formula (I) for the preparation of a 2-oxo-1,3-dioxolane-4-carboxamide-substituted prepolymer.