The Sherwin Williams Company

Swimc LLC

Tapan DebRoy

Donald Boespflug

Jason Lindquist

Chun Ren

Garry Edgington

Jason S Ness

Dan G Hartinger

Victoria J Gelling

James Gallagher

Josh Hewuse

Compositions and methods involving latent base-catalyzed Michael addition reaction are described herein. The compositions described herein are derived from a Michael addition reaction and provide coatings, including primer coatings and direct-to-metal coatings that have optimal adhesion, corrosion resistance, and cure response when applied to a substrate and cured.

Corrosion-resistant primer and topcoat composition

A two-component polyurethane coating composition is described. The composition includes a multifunctional isocyanate component and a multifunctional polyol component. The polyurethane described herein is an overindexed composition that may be used as a tiecoat in a conventional recoat or refinish process. The described composition provides improved adhesion between an aged coat and a newly applied coating.

Polyurethane coating composition

An electrocoat system for electrodeposition is described. The system includes an inorganic bismuth-containing compound or a mixture of inorganic and organic bismuth-containing compounds. The system demonstrates a high degree of crosslinking and produces a cured coating with optimal crosslinking and corrosion resistance.

Electrodeposition system

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Victoria, MN, United States of America

Tapan DebRoy