Coating process

Details Coating process Coating process

C - Chemistry, Metallurgy

09

D

117/204

C09D 133/02 (2006.01) B05D 7/16 (2006.01) C09D 123/08 (2006.01) C08L 23/08 (2006.01) C08L 35/00 (2006.01)

Patent

CA 1328586

ABSTRACT COATING PROCESS An aluminium or tinned-steel can for carbonated beverage is protected by a low-temperature curing lacquer. The lacquer is applied as an aqueous coating formulation of ethylene maleic acid copolymer (containing KOH to promote decarboxylation) plus some poly(acrylic acid) to promote coherent-film-forming ability plus a diol cross-linking agent to reduce the water-sensitivity. The coated substrate is heat-cured at the relatively low temperature of 200°C for 10 minutes.

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