METHOD OF COATING APPLICATION ON ALLOY WHEELS Russian patent published in 2017 - IPC B05D7/14 C23C28/00 

FIELD: technological processes.

SUBSTANCE: invention relates to application of coating on alloy wheels, coating mixtures for use in this method, as well as obtained so alloy wheels with coating. Method of coating application on alloy wheels is performed with at least three layers, including primer layer, layer of main varnish and layer of transparent varnish. Each layer represents various coating mixtures layer. Primer layer has two layers, wherein first layer is located directly on substrate, and second layer is located on first layer. Method involves providing substrate, including light alloy wheel workpiece from aluminium casting alloy subjected to machining. Besides, method involves application of primer layer directly onto substrate. Primer layer contains at least one radiation curable coating mass with acid number from 10 to 120 mg KOH/g. Method also includes application of primer second layer, application of main varnish and application of transparent varnish layer on light-alloy wheels outer side. Transparent varnish layer includes radiation curable colorless varnish layer, having at least 1 mol of reactive groups capable of radical polymerization with double bonds per kilogram of coating mass. Then performing hardening of different cover mixtures layers using radiation.

EFFECT: technical result of invention is decrease in energy consumption and/or drying, film-formation and/or curing time and/or reduced use of volatile organic compounds.

8 cl, 4 ex