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AssigneeEastman Chemical Company
InventorsMark D. Clark, Thauming Kuo, Rebecca R. Stockl, Glen D. Shields
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A water-based latex of an acrylic-modified waterborne alkyd dispersion in water is described. The acrylic-modified waterborne alkyd is a hybrid resin prepared by the polymerization of at least one ethylenically unsaturated monomer in the presence of a waterborne alkyd having at least one pendant sulfonate functionality. The ethylenically unsaturated monomer may also be a latent oxidatively functional (LOF) acrylic monomer. Preparation of the latexes may be achieved by emulsion polymerization of at least one ethylenically unsaturated monomer in the presence of a waterborne alkyd having at least one pendant sulfonate functionality. Preparation of hybrid latexes which contain latent oxidative functional (LOF) acrylic monomers may also be achieved by emulsion polymerization of at least one LOF acrylic monomer in the presence of a waterborne alkyd having at least one pendant sulfonate functionality whereby the latent oxidative functionality of the acrylic polymer survives polymerization. Such acrylic-modified waterborne alkyds are useful in a variety of coating compositions.
A latent oxidatively-functional-modified alkyd comprising the product of at least one latent oxidatively-functional monomer polymerized in the presence of a waterborne alkyd having at least one pendant sulfonate functionality, wherein the resulting latent oxidatively-functional-modified alkyd possesses sufficient available latent oxidatively-functional groups to increase the effective oxidative crosslinking of said latent oxidatively-functional-modified alkyd upon application to a substrate.
A water-based latex comprising water and a latent oxidatively-functional-modified alkyd comprising the product of at least one latent oxidatively-functional monomer polymerized in the presence of an aqueous dispersion of a waterborne alkyd having at least one pendant sulfonate functionality, wherein said latent oxidatively-functional-modified alkyd of the latex possesses sufficient available latent oxidatively-functional groups to increase the effective oxidative crosslinking of said latent oxidatively-functional-modified alkyd upon application of the latex to a substrate.
A method of preparing a water-based latex comprising the step of polymerizing at least one latent oxidatively-functional monomer in the presence of an aqueous dispersion of a waterborne alkyd having at least one pendant sulfonate functionality, wherein said polymerizing step is conducted under conditions sufficient for the survival of the latent oxidative functionality of said monomer such that the latent oxidatively-functional-modified alkyd of the resulting latex possesses sufficient available latent oxidatively-functional groups to increase the effective oxidative crosslinking of said latent oxidatively-functional-modified alkyd upon application of said latex to a substrate.
Dependencies are inferred from the claim text.