COATING FOR DECORATIVE METALS WITH IMPROVED MAR AND SCRATCH RESISTANCE AND METHODS OF APPLICATION

Coated articles comprising a decorative metal substrate and a transparent cured coating thereon containing inorganic particles in which the concentration of particles in the exposed surface region of the cured coating is greater than the bulk region of the coating. Preferably, the transparent coating is applied by electrodeposition. 1. A coated article comprising:(a) a decorative metal substrate having a specular gloss greater than 400, with the proviso that the decorative metal substrate is not a pigmented coating,(b) a transparent cured coating thereon containing a resinous binder, 0.5 to 10 percent by weight based on total solids weight of the coating of a surface active agent and inorganic particles in which the concentration of particles in the exposed surface region of the cured coating is greater than the bulk region of the cured coating.2. The coated article of in which the decorative metal is selected from the group consisting of brass claim 1 , bronze claim 1 , and aluminum and precious metals.3. The coated article of in which the decorative metal is selected from the group consisting of hardware claim 1 , aluminum and trim parts and jewelry.4. The coated article of in which the transparent cured coating is applied by electrodeposition.5. The coated article of in which the electrodeposition is cationic electrodeposition.6. The coated article of claim in which the cured coating is derived from a (meth)acrylic resin.7. The coated article of in which the inorganic particles have a particle size less than 1000 nanometers.8. The coated article of in which the inorganic particles have a Mohs' hardness greater than 5.9. The coated article of in which the inorganic particles are colloidal silica.10. The coated article of in which the particles are present in the cured coating composition in amounts of 0.5 to 10 percent by weight based on weight of the cured coating.11. The coated article of in which the surface active agent is a polysiloxane. The present invention ...

Aqueous dispersions of microparticles having a nanoparticulate phase and coating compositions containing the same

The present invention is directed to an aqueous dispersion of microparticles comprising nanoparticulates, and to methods of preparing the dispersion, as well as to compositions containing such dispersions. The dispersion is prepared by (a) providing a plurality of nanoparticulates having an average particle size of 300 nanometers or less; (b) admixing the nanoparticulates with a solventborne water-disperable polymer or with (1) one or more polymerizable ethylenically unsaturated monomers; and/or (2) a mixture of one or more polymerizable unsaturated monomers with one or more polymers; and/or (3) one or more polymers, to form an admixture; (c) subjecting the admixture to high stress shear conditions in the presence of either an organic solvent or an aqueous medium to particularize the admixture into microparticles; and (d) optionally, polymerizing the ethylenically unsaturated monomers under free radical polymerization conditions.

Aqueous dispersions of microparticles with a nanoparticle phase and coating compositions containing them.

Bu buluş nano parçacıklar içeren mikro parçacıkların sulu bir dispersiyonuna, dispersiyonu hazırlamak için usullere ve bu dispersiyonları içeren bileşimlere ilişkindir. Dispersiyon (a) ortalama parçacık büyüklüğü 300 nanometre veya daha az olan birçok nano parçacık temin etme; (b) nano parçacıklarıçözücüyle taşınan suda dispersiyon haline gelebilir bir polimerle veya (1) bir veya daha fazla polimerize edilebilir etilenik olarak doymamış monomer, ve/veya (2) bir veya daha fazla polimerize edilebilir doymamış monomerin bir veya daha fazla polimerle bir karışımı; ve/veya (3) bir veya daha fazlapolimerle karıştırarak bir karışım elde etme, (c)karışımı organik bir çözücünün veya sulu bir maddenin varlığında yüksek basınçlı kesme koşullarına tâbi tutarak karışımı mikro parçacıklar haline getirme, ve (d) isteğe bağlı olarak, etilenik olarak doymamış monomerleri serbest radikal polimerizasyon koşulları altında polimerize etme aşamalarıyla hazırlanır. The present invention relates to an aqueous dispersion of microparticles containing nanoparticles, methods for preparing the dispersion and compositions containing these dispersions. Dispersion (a) providing a plurality of nanoparticles having an average particle size of 300 nanometers or less; (b) a mixture of nanoparticles with a solvent-borne water dispersible polymer, or (1) one or more polymerizable ethylenically unsaturated monomers, and / or (2) one or more polymerizable unsaturated monomers with one or more polymers; and / or (3) mixing the mixture with one or more polymers to obtain a mixture, (c) subjecting the mixture to high pressure shear conditions in the presence of an organic solvent or aqueous substance, and (d) microparticulating the mixture, optionally ethylenically unsaturated monomers are prepared by polymerizing steps under free radical polymerization conditions.

Aqueous dispersions of microparticles having a nanoparticulate phase and coating compositions containing the same

The present invention is directed to an aqueous dispersion of microparticles comprising nanoparticulates, and to methods of preparing the dispersion, as well as to compositions containing such dispersions. The dispersion is prepared by (a) providing a plurality of nanoparticulates having an average particle size of 300 nanometers or less; (b) admixing the nanoparticulates with a solventborne water-disperable polymer or with (1) one or more polymerizable ethylenically unsaturated monomers; and/or (2) a mixture of one or more polymerizable unsaturated monomers with one or more polymers; and/or (3) one or more polymers, to form an admixture; (c) subjecting the admixture to high stress shear conditions in the presence of either an organic solvent or an aqueous medium to particularize the admixture into microparticles; and (d) optionally, polymerizing the ethylenically unsaturated monomers under free radical polymerization conditions.

Coating for decorative metals with improved mar and scratch resistance and methods of application

Coated articles comprising a decorative metal substrate and a transparent cured coating thereon containing inorganic particles in which the concentration of particles in the exposed surface region of the cured coating is greater than the bulk region of the coating. Preferably, the transparent coating is applied by electrodeposition.

Coating for decorative metals with improved mar and scratch resistance and methods of application

Coated articles comprising a decorative metal substrate and a transparent cured coating thereon containing inorganic particles in which the concentration of particles in the exposed surface region of the cured coating is greater than the bulk region of the coating. Preferably, the transparent coating is applied by electrodeposition.

Nanoparticle coatings for flexible and/or drawable substrates

Flexible and/or drawable substrates having coatings comprising a dispersion of resin coated nanoparticles are disclosed, as are laminated articles comprising such flexible and/or drawable substrates.

Photodegradation-resistant electrodepositable coating compositions with improved throw power and processes related thereto