Axalta Coating Systems IP Co LLC

E.i. Dupont De Nemours and Company

Coatings Foreign IP Co. LLC

Alan E Smith

Jeffery W Johnson

Peter William Uhlianuk

Delson Jayme Trindade

Hisanori Omura

David M Thomson

Brian J Ladd

J David Nordstrom

Michael E Woodhouse

The present disclosure is directed to an anticrater additive that is useful for providing a smooth surface to a cured layer of an electrocoating composition on a substrate. The anticrater additive comprises the reaction product of a polyisocyanate with an acrylic polymer having one isocyanate reactive functional group. The acrylic polymer can be an acrylic polymer that is terminated with a chain transfer agent. Also disclosed is an electrocoat composition comprising the anticrater additive and a substrate coated with a cured layer of the electrocoat composition.

Acrylic anticrater additive for electrocoats

The present disclosure is directed to a method of applying at least one layer of a waterborne primer composition, at least one layer of a waterborne basecoat composition and at least one layer of a clearcoat composition to a substrate followed by a heating step which simultaneously cures the applied layers of coating composition.

Method for forming a multilayer coating

An improved process which comprises applying a layer of a color coating composition to a substrate used for the exterior of a motor vehicle and then applying a layer of a clear coating composition to the color coating and curing the resulting clear coat/color coat layer; the improvement is the use of a clear coating composition containing a film forming binder of an acrylosilane polymer and exposing the clear coat layer after curing to an artificial source of UV light under ambient temperatures and atmospheric conditions in an amount sufficient to improve the resistance of the clear coat to water spotting and acid etching when exposed to natural weathering conditions.

UV light treatment of clear coat to improve acid etch resistance

Growing community of inventors

Troy, MI, United States of America

Alan E Smith