Phenols having unsubstituted ortho or para positions have been shown to form Mannich bases by condensation with formaldehyde and either primar~~-~ or sec~ ndary~-~ amines. Reaction of phenol with formaldehyde and dimethylamine has been reported to give 2-7* 8 2, 6-bk7 and 2, 4, 6-tris-(dimethylaminomethyl)-phenol. 2, 4, 6-Tris-(morpholinomethy1)- phenol also has been prepared. s In the limited work with primary amines only resinous ...