Process for the production of autocrosslinkable polymers containing n-alkoxymethyl groups

摘要

Storable, autocrosslinkable polymers containing N-alkoxymethyl groups are obtained by reacting 5-alkoxymethyl-1,3,4-dioxazol-2-ones with a polymer having an average molecular weight above 600 and an average of more than one Zerewitinoff-active hydrogen atom in the molecule in the presence of a catalytic quantity of at least an alkali metal salt. The new catalysts allow to carry out the reaction at a temperature in the range from 50 DEG to 110 DEG C and guarantee a complete reaction of the reactants into uncrosslinked but autocrosslinkable light-stable end products.