Aqueous inorganic zinc-rich coating composition

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 1/02 (2006.01) C09D 5/10 (2006.01) C09D 7/12 (2006.01)

Patent

CA 2720742

The present invention employs zinc powder and a vehicle containing an aqueous solution containing a specific alkali silicate, an ammonium ion, and a halide ion at specific concentrations; a vehicle containing an aqueous solution containing the above ingredients at specific concentrations and additionally an alkali halide at a specific concentration; or a vehicle containing an aqueous solution containing a specific alkali silicate and an alkali halide at specific concentrations, wherein the vehicle and zinc powder are contained at a specific ratio.

Cette invention concerne une composition de revêtement aqueuse inorganique, riche en zinc, qui comprend : un véhicule comprenant une solution aqueuse contenant un silicate alcalin spécifique, un ion ammonium et un ion halogène aux concentrations spécifiées, un véhicule comprenant une solution aqueuse contenant les composants précités aux concentrations spécifiées et contenant, en plus, un halogénure alcalin à une concentration spécifiée, ou un véhicule comprenant une solution aqueuse contenant un silicate alcalin spécifique et un halogénure alcalin aux concentrations spécifiées ; et une poudre de zinc, le véhicule et la poudre de zinc étant contenus à un rapport spécifié.

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