Abstract: N-(aminomethyl)-.alpha.,.beta.-ethylenically unsaturated carboxamides such as N-(dimethylaminomethyl)acrylamide are readily prepared without coincident production of saturated impurities by reacting at a pH below 7 an .alpha.,.beta.-ethylenically unsaturated carboxamide such as acrylamide or N-substituted derivative such as N-methylolacrylamide with a secondary amine such as dimethylamine, and a lower aldehyde such as formaldehyde when such is required. The resulting aminomethyl carboxamides are polymerized at a pH of 7 or less to form polymers containing essentially no gelled product.

Abstract: The reaction of isocyanates with substances containing isocyanate groups or active hydrogen groups, such as hydroxyl groups, amino groups and the like, are initiated by sulfonium zwitterions such as the ar-cyclic sulfonium areneoxides. Accordingly, partially trimerized isocyanates, polyurethanes and other useful materials can be made.

Abstract: Addition polymerizable polyethers having pendant ethylenically unsaturated urethane groups are usefully employed as flooring materials and in other applications utilizing radiation curable or chemically curable materials. Such urethane polyethers are advantageously prepared by reacting a polyether polyol such as a hydroxy terminated polypropylene glycol with an isocyanatoalkyl ester of an ethylenically unsaturated acid such as 2-isocyanatoethyl methacrylate.

Abstract: In the recovery of hydrocarbon materials from subterranean formations, the simultaneous production or loss of other fluids such as water is inhibited by the selective introduction into the subterranean porous structure of discrete spheroidal microgels of a water-swollen or water-swellable, crosslinked polymer such as crosslinked polyacrylamide.

Abstract: Disclosed are pyridinecarboxylic acids and derivatives thereof which are useful as intermediates for the preparation of 1H-pyrido(2,3-c or 4,3-c) (1,2,6)thiadiazin-4(3H)-one-2,2-dioxide compounds and derivatives thereof which are useful as herbicides.