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US 7,404,987 B2Granted
White pearlescent paint compositions and coatings
AssigneeHonda Motor Co., Ltd.
InventorsNirupama Karunaratne, Ken Johnson, Hiroki Kanaya
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AssigneeHonda Motor Co., Ltd.
InventorsNirupama Karunaratne, Ken Johnson, Hiroki Kanaya
Estimating the term…
A pearlescent paint composition comprising a film-former and a solids material comprising a pearlizing effective amount of a pearlizing compound, a hiding material and a pigment, the improvement wherein the pigment is white and the hiding material is selected from the groups consisting of metals selected from particulate aluminum, zinc, copper, nickel, stainless steel and alloys thereof, and compounds selected from aluminum oxide, aluminum silicate, hydrated magnesium aluminum silicate, silica, mica aluminum silicate, magnesium oxide, calcium carbonate, calcium sulphate, calcium metasilicate, anhydrous sodium potassium aluminum silicate, sodium aluminum silicate, alumina trihydrate and barium sulphate in, respective, effective whitening and hiding amounts. Preferably, the pearlizing compound is a mica, the hiding material is particulate aluminum and the white pigment is titanium. The combination of the three types of compounds in the desired pearlescent finishes, particularly on vehicle bodies, provides the most advantageous option of requiring only a two-coat system.
A process for producing a pearlescent white finish on a cured white primer surface of a substrate which process comprises spray coat applying an improved pearlescent white paint composition comprising a film-former and a solids material consisting of at least 90% w/w non-coated mica, 4-7% w/w TiO2, and 0.2-3.0% w/w particulate metallic aluminum, in, respectively, effective whitening and hiding amounts to the cured white primer surface of said substrate;
A process for producing a pearlescent white finish on a cured white primer surface of a substrate which process comprises spray coat applying an improved pearlescent white paint composition in a formulation base selected from the group consisting of an aqueous solvent and lacquer, the improved pearlescent white paint coating composition further comprising a film-former and a solids material consisting of at least 90% w/w non-coated mica, 4-7% w/w TiO2, and 0.2-3.0% w/w particulate metallic aluminum, in, respectively, effective hiding and whitening amounts to the cured white primer surface of said substrate;
A process for producing a pearlescent white finish on a cured white primer surface of a substrate which process comprises spray coat applying, in a single white pearlescent layer on the cured white primer surface, an improved pearlescent white paint composition comprising a film-former and a solids material consisting of at least 90% w/w non-coated mica, 4-7% w/w TiO2, and 0.2-3.0% w/w particulate metallic aluminum, in, respectively, effective hiding and whitening amounts;
Dependencies are inferred from the claim text.