Air drying films from unsaturated fatty acid metal salts

Claim 1

A SURFACE COATING COMPOSITION COMPRISING A MIXTURE OF (1) FROM 1.0-1.5 EQUIVALENT PROPORTIONS OF A METAL LEWIS BASE AND (2) A TOTAL OF 1.0 EQUIVALENT PROPORTIONS OF MIXED ACIDS, EACH EQUIVALENT PROPORTION OF SAID MIXED ACIDS COMPRISING (A) FROM 0.6-0.9 EQUIVALENT PROPORTIONS OF AN UNSATURATED FATTY ACID AND (B) FROM 0.4-0.1 EQUIVALENT PROPORTIONS OF A HYDROXY CARBOXYLIC ACID, DISSOLVED IN AN INERT VOLATILE ORGANIC SOLVENT; SAID METAL LEWIS BASE BEING SELECTED FROM THE GROUP CONSISTING OF HYDROXIDES, ALKOXIDES AND THE MIXED ALKOXY-HY DROXIDES OF METALS HAVING A VALENCE STATE OF FROM 3-4, WHEREIN EACH ALKOXIDE GROUP CONTAINS FROM 1-10 CARBON ATOMS; SAID UNSATURATED FATTY ACID BEING SELECTED FROM THE GROUP CONSISTING OF UNSATURATED FATTY ACIDS CONTAINING FROM 10-18 CARBON ATOMS, THE FATTY ACIDS OF DRYING AND SEMI-DRYING OILS CONTAINING MIXTURES THEREOF, AND MIXTURES THEREOF; SAID HYDROXY CARBOXYLIC ACID BEING SELECTED FROM THE GROUP CONSISTING OF SATURATED AND UNSATURATED ALIPHATIC MONO- AND POLY-BASIC HYDROXY ACIDS CONTAINING FROM 2-18 CARBON ATOMS.