Oxidized alpha-olefins in rust preventive coatings

A coating composition comprising:

• (a) an oxidized α-olefin having about 16 to about 40 carbon atoms, said oxidized α-olefin comprising one or more carboxylic acid groups or C1-C28 alkyl esters, such as methyl or butyl ester, of one or more of said carboxylic acids, said α-olefin having been oxidized to an Acid Number of about 10 to about 120 as measured prior to any esterification;
• (b) a hydrocarbon-soluble ester-containing polymer having at least one branch of about 10 to about 36 carbon atoms and having a number average molecular weight of about 5000 to about 300,000;
• (c) a carboxylic acid having at least 10 carbon atoms.
• (d) a salt of an alkylarylsulfonic acid, wherein the alkyl group thereof is of sufficient length to provide solubility of the salt in a hydrocarbon oil;
• (e) an oil in an amount sufficient to dissolve said salt;
• and
• (f) optionally, a volatile diluent.