Cycloaminals, process for their preparation and their application

Claim 1

Compounds of the formula: wherein m represents an integer of from 1 to 3 and n represents 0, 1 or 2 and the sum of m + n is 2 or 3; R, represents an aliphatic hydrocarbon group which is optionally cyano-substituted and which has from 1 to 6 carbon atoms, a cycloaliphatic hydrocarbon group having from 5 to 10 carbon atoms or an araliphatic hydrocarbon group having from 7 to 10 carbon atoms; R z represents a divalent aliphatic hydrocarbon group having from 2 to 6 carbon atoms, at least two carbon atoms being arranged between the two nitrogen atoms; R 3 and R 4 represent identical or different groups and denote hydrogen, aliphatic hydrocarbon groups having from 1 to 18 carbon atoms, cycloaliphatic hydrocarbon groups having from 5 to 10 carbon atoms or aromatic hydrocarbon groups having from 6 to 10 carbon atoms or the two groups R 3 and R 4 together with the carbon atom of the heterocyclic ring may form a 5-membered or 6-membered cycloaliphatic ring; R 5 represents an (m + n)-valent group such as that which is obtained by the removal of m + n isocyanate groups from an (m + n)-valent polyisocyanate.