Coating Composition

A coating composition according to any preceding claim, wherein the carboxylic acid of the bismuth carboxylic acid salt comprises an optionally substituted straight or branched 2 to 12 member carbon chain.

A coating composition according to any preceding claim wherein the bismuth carboxylic acid salt comprises bismuth neodecanoate.

An aluminium substrate coated with a coating composition on at least a portion thereof, the coating composition comprising:

• i) a polymeric film forming resin,
• ii) a crosslinking agent suitable for crosslinking the polymeric film forming resin i), and
• iii) an additive comprising a bismuth carboxylic acid salt.

A packaging article coated with a coating composition on at least a portion thereof, the coating composition comprising

• i) a polymeric film forming resin,
• ii) a crosslinking agent suitable for crosslinking the polymeric film forming resin i), and
• iii) an additive comprising a bismuth carboxylic acid salt.

Method of coating a metal substrate comprising applying thereto a coating composition comprising

• i) a polymeric film forming resin,
• ii) a crosslinking agent suitable for crosslinking the polymeric film forming resin i), and
• iii) an additive comprising a bismuth carboxylic acid salt.

Use of a bismuth carboxylic acid salt as an additive in a coating composition for increasing the alkali resistance of a substrate coated with the coating composition.

A method of increasing the alkali resistance of a coated substrate, the substrate being coated with a coating composition, the method comprising the use of an additive comprising bismuth carboxylic acid salt in the said coating composition.