Polishing method
AssigneeRohm and Haas Company
InventorsDavid R. Gehman, Irwin S. Fiarman
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AssigneeRohm and Haas Company
InventorsDavid R. Gehman, Irwin S. Fiarman
Estimating the term…
This invention relates to essentially water-clear aqueous coating compositions, particularly floor polishing compositions, containing a highly hydrophilic addition copolymer of low molecular weight, a water miscible organic coalescing agent or plasticizer and, as optional components, a polyvalent metal compound, an alkali-soluble resin and a wax, with or without a wax-soluble resin. Methods of using the composition and articles containing transparent coatings derived from such compositions are also included in the invention. The compositions of this invention, when formulated with such desirable additives as wetting agents and leveling agents and adjusted to a final alkaline pH of between 7.0 to about 10 or more, are essentially water-clear or substantially clarified solutions that, after application to a substrate, dry to form clear exceptionally glossy coatings, the glossiness being markedly higher than with known polish compositions, and removal of polish coatings using alkaline or detergent solutions being effected more easily than with prior polishes.
A method of polishing wood, linoleum, asphalt, vinyl, and vinyl asbestos flooring, with a high gloss coating having a Knoop hardness number of at least 0.5. comprising the steps of applying thereto a layer of a polymeric composition having an essentially water-clear appearance and containing alkaline or buffering agents, a salt of a water-insoluble addition polymer having carboxyl groups, a surface active agent, water, and optional ingredients, in which said addition polymer consists essentially of an addition polymer of monomers consisting essentially of from 12% of about 25% by weight of an .alpha.,.beta.-unsaturated carboxylic acid interpolymerized with an ester of acrylic acid or methacrylic acid, which polymer contains no more than about 10% of an additional copolymerizable hydrophilic property-conferring mononer having hydroxyl, amide, or amine groups, said polymer having an intrinsic viscosity, at 30.degree. C. in tetrahydrofuran, of between 0.05 and 0.15, and in which a water miscible coalescing agent or plasticizer is present in an amount between about 3% and 75%, based on the combined weights of the acrylic polymer, and any wax, wax-soluble polymer, or alkali-soluble polymer present, there being 30 to 100 parts by weight addition polymer and 0 to 70 parts by weight of wax, wax-soluble resin, or alkali-soluble resin, the total of addition polymer and the wax, wax-soluble, or alkali-soluble resin being 100 parts, and drying the coating, the coating being removable with aqueous ammonia, there being no more than about 50% of other monoethylenically unsaturated monomers in the polymer, the total solids content being from about 8% to 45% by weight.
In a method of polishing wood, linoleum, asphalt, vinyl, and vinyl asbestos flooring, said composition being capable of forming a high gloss coating film having a Knoop hardness number of at least 0.5, the steps of dissolving monomers consisting essentially of from about 15% to about 25% by weight of an .beta.,.beta.-unsaturated carboxylic acid and at least one ester of acrylic acid or methacrylic acid and up to 50% of other monoethylenically unsaturated monomers, which mmonomers contain no more than about 10% of an additional copolymerizable hydrophilic property-conferring monomer having hydroxyl, amide or amine groups, in a water-miscible higher boiling oxygenated solvent selected from monohydric and polyhydric alcohols and hydroxy ethers, polymerizing said monomers at a temperature of from 100.degree. C. to 175.degree. C. by means of a free-radical initiator under conditions such that a polymer having an intrinsic viscosity, at 30.degree. C. in tetrahydrofuran, of between 0.05 and 0.15 is obtained, and mixing the resulting polymer and solvent with water, said solvent being present in the mixture in an amount between about 3% and 75% based on the combined weights of the acrylic polymer and any wax, was-soluble resin, or alkali-soluble resin, there being 30 to 100 parts by weight of addition polymer and 0 to 70 parts by weight of wax, wax-soluble resin, or alkali-soluble resin, the total of addition polymer and the wax, wax-soluble, or alkali-soluble resin being 100 parts, with an alkaline agent or buffering agent in an amount to give the dispersion a pH of at least about 7.5 and an essentially water-clear appearance, all of said meterials being at a temperature of from about 20.degree. C. to 25.degree. C., applying a coating of said composition to said flooring and drying the coating at ambient temperature, the coating being removable by aqueous ammonia, the solids content of the coating composition being from about 8% to 25% by weight.
In a method of polishing wood, linoleum, asphalt, vinyl, and vinyl asbestos flooring, said composition being capable of forming a high gloss coating film having a Knoop hardness number of at least 05, the steps of emulsifying acrylic monomers comprising from about 15% to about 25% by weight of an .alpha.,.beta.-unsaturated monocarboxylic acid and an ester of acrylic said or methacrylic acid and up to 50% of other monoethylenically unsaturated monomers, which monomers contain no more than about 10% of an additional copolymerizable hydrophilic property-conferring monomer having hydroxyl, amides, or amine groups, in an aqueous medium containing a surface-active agent, a free-radical initiator and a chain transfer agent, and causing interpolymerization of said monomers, the quantity of chain transfer agent and the polymerization conditions being such that a polymer having an intrinsic viscosity, in tetrahydrofuran at 30.degree. C., of between about 0.05 and about 0.15 is obtained, and mixing the resulting polymer dispersion at room temperature with a coalescing agent and an alkaline agent or buffering agent in an amount to give an essentially water-clear appearance, a pH of at least about 7.5, and a solids content of about 8% to 25% by weight, said coalescing agent being present in the mixture in an amount between about 3% and 75%, based on the combined weights of the acrylic polymer and any wax, wax-soluble resin, or alkali-soluble resin, there being 30 to 100 parts by weight of addition polymer and 0 to 70 parts by weight of wax, wax-soluble resin, or alkali-soluble resin, the total of addition polymer and the wax, wax-soluble, or alkali-soluble resin being 100 parts, applying a coating of the composition to said flooring, and drying the coating at ambient temperature, the coating being removable by aqueous ammonia.
Dependencies are inferred from the claim text.