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AssigneeMcWhorter Technologies, Inc.
InventorsGary Eugene Spilman, Michael Charles Knight, Jr., Lisa Kay Kemp, Joseph Leo Nothnagel
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The present invention is directed to an aqueous dispersion of a polyester salt and polymeric vehicles which include the aqueous dispersions of a polyester salt. The polymeric vehicle is particularly effective for providing coating binders in cured primer coatings. The primer coating compositions are useful for multilayer paint coating films which have at least two layers of paint film including the cured primer coating composition film. The use of the primer polymeric vehicles of the present invention in conjunction with one or more additional overlaying top coating film layers provide a multiple layer coatings having improved adhesion and chip resistance.
An aqueous dispersion of a polyester salt which dispersion is substantially free of emulsifier, wherein the polyester salt is a residue of a polyester having an acid value of from about 30 to about 50, a number average molecular weight of from about 1500 to about 2800 and a hydroxyl value of not more than about 90, the polyester salt providing a mean particle size in the aqueous dispersion of less than about 400 nm, the aqueous dispersion having less than about 5 weight percent organic solvent.
An aqueous polymer dispersion formed by a process comprising:
An aqueous dispersion of a polyester salt which dispersion is substantially free of emulsifier and having less than about 5 weight percent organic solvent, wherein the polyester salt is the residue of a polyester having a number average molecular weight in the range of from about 1500 to about 2800 and a hydroxyl value of from about 90 to about 50, and an acid value of from about 40 to about 50, the polyester having—COOH groups which are neutralizeable to form a water dispersible polyester salt.
An aqueous dispersion of a polyester salt, wherein the polyester salt is a residue of a polyester having carboxyl groups which provide the polyester with an acid value of from about 30 to about 50, a number average molecular weight of from about 1500 to about 2800 and a hydroxyl value of from about 90 to about 50, the polyester salt providing a mean particle size in the aqueous dispersion of less than about 400 nm, the aqueous dispersion having less than about 5 weight percent organic solvent and substantially free of emulsifier.
An aqueous dispersion of a polyester salt, wherein the polyester salt is a residue of a polyester with an acid value of from about 30 to about 50, a number average molecular weight of from about 1500 to about 2800 and a hydroxyl value of from about 90 to about 50, the polyester salt providing a mean particle size in the aqueous dispersion of less than about 400 nm, the aqueous dispersion having less than about 2 weight percent organic solvent and substantially free of emulsifier.
Dependencies are inferred from the claim text.