Polyisocyanate/polyamine mixtures and their use for the production of polyurea coatings

Abstract

The present invention relates to an aldimine/aspartate corresponding to the formula ##STR1## wherein X represents an organic group which has a valency of n and is inert towards isocyanate groups at a temperature of 100.degree. C. or less, R.sub.1 and R.sub.2 may be the same or different and represent optionally substituted hydrocarbon radicals, or R.sub.1 and R.sub.2 together with the .beta.-carbon atom form a cycloaliphatic or heterocyclic ring and R.sub.3 and R.sub.4 may be identical or different and represent organic groups which are inert towards isocyanate groups at a temperature of 100.degree. C. or less, R.sub.5 and R.sub.6 may be identical or different and represent hydrogen or organic groups which are inert towards isocyanate groups at a temperature of 100.degree. C. or less, and a and b represent integers with a value of 1 to 5, provided that the sum of a and b is 2 to 6. The present invention also relates to coating compositions containing these aldimine aspartates and polyisocyanates, and to the use of these coating compositions for the production of polyurea coatings.

Dependencies are inferred from the claim text.