Ford Motor Company Limited

E.i. Dupont De Nemours and Company

David M Thomson

Panagiotis I Kordomenos

Stephen C Peng

Hisanori Omura

Delores J Alexander

Alan E Smith

J David Nordstrom

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

This invention is directed to polymeric compounds which contain the polyalkylpiperidine radical and at least two primary hydroxyl groups. These compounds are useful as light stabilizers for plastics and coatings. More particularly, the polymeric stabilizers is formed by chain extending polyalkylpiperidine with an excess of epoxy resin to form a diepoxide functional polymer which is then capped with hydroxy functional monomer.

Polymeric light stabilizers

A high solids, thermosetting coating composition which, exclusive of pigments, solvents and other nonreactive components consists essentially of:

High solids paint composition comprising hydroxy functional oligoesters

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Mt. Clemens, MI, United States of America

David M Thomson