Prepn. of aldehyde and ketone imine(s), e.g. acetone imine - from alpha-amino nitrile(s) and carbodiimide(s), useful as crosslinking agents and polymerisation catalyst

摘要

A process for preparing aldimines and ketimines is claimed. Also claimed is acetone imine (I). The process comprises reacting an alpha-amino itrile (II) with an HCN acceptor comprising a carbodiimide (III) at 0-200 degrees C (pref. 80-160 degrees C). The products are useful as moisture-activatable cross-linking agents for polyisocyanates and catalysts for polyurethane and epoxy resin mfr. In an example, (I) is pred. by reacting alpha-amino-isobutyl-ronitrile with di-n-butylcarbonciimide.