new mannich bases, a method for preparing and their use in the manufacture of polyurethanes

摘要

1431078 Mannich bases BAYER AG 20 Sept 1973 [20 Sept 1972] 44188/73 Heading C2C [Also in Division C3] The invention comprises Mannich bases of general formula in which A represents B represents hydrogen or alkyl; R represents -(CH 2 ) x OH in which x represents an integer of 2 or more; and z represents an integer. They may be prepared by reacting an acid amide of formula with formaldehyde and a secondary amine of formula The Mannich bases are used in the preparation of polyurethanes.