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US 6,333,378 B1Granted
Acrylic modified waterborne alkyd or uralkyd dispersions
AssigneeEastman Chemical Company
InventorsMark D. Clark, Bradley J. Helmer, Glenn L. Shoaf
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AssigneeEastman Chemical Company
InventorsMark D. Clark, Bradley J. Helmer, Glenn L. Shoaf
Estimating the term…
A water-based latex of an acrylic-modified waterborne alkyd or uralkyd dispersion in water is described. The acrylic-modified waterborne alkyd or uralkyd is a hybrid resin prepared by the polymerization of at least one latent oxidatively-functional (LOF) acrylic monomer in the presence of a waterborne alkyd or uralkyd. Alternatively, the acrylic-modified waterborne alkyd or uralkyd is a hybrid resin prepared by shearing a mini-emulsion based on a solvent-borne alkyd or uralkyd dissolved in at least one LOF acrylic monomer. Preparation of the latexes may be achieved by emulsion polymerization of at least one latent oxidatively-functional acrylic monomer in the presence of a waterborne alkyd or uralkyd whereby the latent oxidative functionality of the acrylic polymer survives polymerization. Water-based latexes may also be prepared by polymerizing a sheared mini-emulsion based on a solvent-borne alkyd or uralkyd dissolved in at least one LOF acrylic monomer such that the latent oxidative functionality of the acrylic polymer survives polymerization. Such acrylic-modified waterborne alkyd or uralkyds are useful in a variety of coating compositions.
A latent oxidatively-functional-modified alkyd or uralkyd comprising the polymerization product of a sheared mini-emulsion comprising a solvent-borne alkyd or uralkyd dissolved in at least one latent oxidatively-functional monomer, wherein the resulting latent oxidatively-functional-modified alkyd or uralkyd possesses sufficient available latent oxidatively-functional groups to increase the effective oxidative crosslinking of said latent oxidatively-functional-modified alkyd or uralkyd upon application to a substrate.
A water-based latex comprising water and a latent oxidatively-functional-modified alkyd or uralkyd comprising the polymerization product of a sheared mini-emulsion comprising a solvent-borne alkyd or uralkyd dissolved in at least one latent oxidatively-functional monomer, wherein said latent oxidatively-functional-modified alkyd or uralkyd of the resulting latex possesses sufficient available latent oxidatively-functional groups to increase the effective oxidative crosslinking of said latent oxidatively-functional-modified alkyd or uralkyd upon application of the latex to a substrate.
A method of preparing a water-based latex comprising the step of polymerizing a sheared mini-emulsion comprising a solvent-borne alkyd or uralkyd dissolved in at least one latent oxidatively-functional monomer, 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 or uralkyd of the resulting latex possesses sufficient available latent oxidatively-functional groups to increase the effective oxidative crosslinking of said latent oxidatively-functional-modified alkyd or uralkyd upon application of said latex to a substrate.
A method of preparing a water-based latex comprising the steps of:
Dependencies are inferred from the claim text.