Surfactants for improving the gel properties of clay minerals in coating compositions

摘要

This invention is to surfactant compositions which are organic salts of a polyamine and a carboxylic acid. The polyamine has the structure: <IMAGE> wherein R is (i) alkyl or alkenyl containing from about 10 to about 22 carbon atoms or (i) R'-O-CH2CH2CH2- wherein R' is alkyl containing from about 8 to about 22 carbon atoms; A is a divalent hydrocarbyl group containing about 2 to about 6 carbon atoms; and n is an integer from about 1 to about 3. The carboxylic acid has the structure: R''-COOH wherein R'' is alkyl or alkenyl containing about 6 to about 22 carbon atoms. The surfactants may contain polar activators. This invention is also to compositions containing asphalt, a clay mineral, and the above described surfactant.