The Sherwin Williams Company

Randolph B Krafcik

Revathi R Tomko

Jyotindra K Doshi

Peter J Mackulin

Benjamin M Borns

Wendy Zhao

Paul M Kayima

Hyeong-Chan Youn

Anthony B Sharrotta

The present invention relates to coating compositions formed by combining two latex resins: a base latex resin and a stratifying latex resin. The stratifying latex resin comprises at least one 'driver' to promote migration of the stratifying latex to the surface of the coating during curing or drying. Drivers may be selected from one or more of fluorine containing monomers incorporated into the stratifying latex, long chain acrylate monomers, such as lauryl methacrylate, wax, small particle size, or relatively low Tg.

Self-stratifying coatings

This invention relates to polyurethane thickeners having particular utility in paints and coatings comprising the reaction product of an isocyanate functional material, a polyether polyol, and a difunctional hydrophilic endcapping material that is reactive with isocyanates.

Hydrophilically end-capped polyurethane thickeners

This invention relates to silicon-containing polyurethane thickeners having particular utility in paints and coatings comprising the reaction product of an isocyanate functional material, a polyether polyol, a monofunctional, active-hydrogen containing, hydrophobic endcapping material, a silane-functional material, and water.

Coating thickeners comprised of silane-modified polyurethanes

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Aurora, OH, United States of America

Randolph B Krafcik