Abstract: Aqueous polymer compositions which contain a polymer having ureido groups and a polyaldehyde compound are suitable for the production of coatings having high adhesion to substrate and having high cohesion.
Abstract: In an improved process for the preparation of 2-n-propyl-4-amino-5-methoxymethyl-pyrimidine of the formula I ##STR1## by reacting butyramidine II ##STR2## with .alpha.-methoxymethyl-.beta.-methoxyacrylonitrile III ##STR3## the butyramidine II is reacted with a 0.4-5 molar excess of .alpha.-methoxymethyl-.beta.-methoxyacrylonitrile III at from -10.degree. to +20.degree. C.