Patent ID: 8481622

Claim:
A method for coating a can with a coating composition made from triglyceride-based oil, comprising: a) a transesterification step wherein an excess amount of an unsaturated alcohol is mixed with a triglyceride in a reaction to form a new ester, said new ester having a fatty acid moiety and an unsaturated alcohol moiety, wherein said fatty acid moiety has at least one unsaturated fatty acid, and said unsaturated alcohol has the formula of R 1 —OH, R 1 being an alkene containing 2-20 carbon atoms, b) an epoxidation step to convert at least one unsaturated double bond of the alcohol moiety and at least one unsaturated double bond of the fatty acid moiety into an epoxide, said epoxidation step being carried out at or below about 30° C., c) a coating step that entails coating an interior surface of a can with a mixture that includes the foregoing material; and d) curing the mixture of the new ester and the epoxide by the action of a curing agent consisting of an anhydride to form a coating composition.