Bis-oxazolidines, oxazolidine mixtures consisting essentially thereof and their use as hardeners for plastics precursors containing isocyanate groups

Abstract

The present invention relates to bis-oxazolidines corresponding to formula (II) ##STR1## wherein R represents a branched, saturated, aliphatic hydrocarbon radical containing 5 to 8 carbon atoms. The present invention also relates to oxazolidine mixtures, which are also suitable as hardeners for plastics precursors containing isocyanate groups, consisting essentially of a) bis-oxazolidines corresponding to formula (II) above and b) 0.03 to 0.3 moles per mole of component (a), of compounds corresponding to formula (III) ##STR2## wherein R represents a saturated, branched, aliphatic hydrocarbon radical containing 5 to 8 carbon atoms. The present invention additionally relates to a process for the production of these oxazolidine mixtures and to their use in combination with polymer precursors containing isocyanate groups for coating or sealing compositions.

Dependencies are inferred from the claim text.