Solvent phosphatizing compositions yielding non water...

Details Solvent phosphatizing compositions yielding non water... Solvent phosphatizing compositions yielding non water...

C - Chemistry, Metallurgy

23

C

148/17

C23C 22/03 (2006.01)

Patent

CA 1075569

SOLVENT PHOSPHATIZING COMPOSITIONS YIELDING NON WATER SOLUBLE COATINGS Abstract Of The Disclosure A liquid phosphatizing composition, containing organic solvent such as 1,1,1-trichlorethane or trichlorofluoromethane, can provide phosphate coatings on metal article. In addition to the organic solvent, the composition contains a phosphatizing proportion of phosphoric acid and a solubilizing liquid capable of solubilizing phosphoric acid in the organic solvent. Most critically, the composition contains water in an amount exceeding the proportion of phosphoric acid, yet, the water-containing liquid composition maintains liquid phase homogeneity. Phospha- tized coatings of desirable water insolubility are obtained.

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