Basf Aktiengesellschaft

Paul L Fitzgerald

Eckehardt Wistuba

Joachim Roser

Cheng-Le Zhao

Jan J Spitzer

Ernest G Pole

Richard B Moore

The present invention relates to the use of compositions comprising at least one aqueous polymer dispersion wherein the polymer has carbonyl or oxirane groups (component a)) and at least one compound with at least two NH,groups per molecule as sealing or coating compositions, especially for substrates with a hydrophobic surface. The present invention further relates to coating compositions containing such binder formulations.

Use of polymer dispersions as binding agents for sealing compounds and coating compounds

The present invention relates to a method of coating substrates, especially those with a hydrophobic surface, in which the substrate to be coated is coated with a coating composition whose binder is a formulation comprising an aqueous polymer dispersion in which the polymer has carbonyl or oxirane groups (component a)), and at least one compound having at least two NH.sub.2 groups per molecule, is applied to the substrate to be coated �sic!. It also relates to coating compositions including such binder formulations, and furthermore to a method of sealing using a sealing composition including such formulations as its binder.

Coating of substrates

Anionic Emulsions of asphalt, bitumen, or tar which may optionally contain a latex of a rubbery polymer may be set using a destablizing system comprising either an alkali silicofluoride in the presence of a sulfamate or a mixture of an amine in the presence of a divalent metal ion. The setting time for such emulsions can be reduced to less than half an hour.

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Hixson, TN, United States of America

Paul L Fitzgerald