Abstract: Method for providing corrosion protective coatings for metal surfaces. The coatings contain conventional coating components to which are added at least one zinc or lead salt of five- or six-membered heterocyclic compounds substituted by at least one hydroxyl or mercapto group and the ring includes at least one nitrogen atom and at least two conjugated double bonds, of which at least one has the formation. ##STR1## as corrosion inhibitors.

Abstract: A water-dispersed film-forming vehicle suitable for lacquers is disclosed. The vehicle consists of an aqueous dispersion of an air-drying, low acid-number alkyd resin dispersed by the use of a nonionic surfactant consisting of an adduct of ethylene oxide units onto a phenolic compound substituted by a hydrophobic aliphatic radical containing olefinic double bonds, preferably, containing 12 to 18 carbon atoms and 1 to 5 double bonds. The adduct includes 5 to 40 ethylene oxide units per mol. The water-based dispersion diluent in which the alkyd resin is dispersed may include pigments, siccatives for the alkyd drying resin and optionally processing aid solvents.

Abstract: A water-dispersed film-forming vehicle suitable for lacquers is disclosed. The vehicle consists of an aqueous dispersion of an air-drying alkyd resin dispersed by the use of a surfactant consisting of an adduct of allyl glycidyl ethers and ethylene oxide units onto a hydrophobic aliphatic radical having a replaceable hydrogen atom, optionally substituted by an aryl radical. The hydrophobic aliphatic radical may be a fatty-acid radical of from 6 to 26 carbon atoms and the aryl substituent is a phenol. The adduct includes 2 to 10 allyl glycidyl units and 5 to 25 ethylene oxide units per mol. The water-based dispersion diluent in which the alkyd resin is dispersed may include pigments, siccatives for the alkyd drying resin and optionally processing-aid solvents.