Anti-corrosion pigments and their use in paints

Details Anti-corrosion pigments and their use in paints Anti-corrosion pigments and their use in paints

C - Chemistry, Metallurgy

09

D

31/34

C09D 5/08 (2006.01)

Patent

CA 1162727

ABSTRACT OF DISCLOSURE Anti-corrosion pigments for use in paints are obtained by treating metallic compounds, in particular oxides, phosphates, chromates or molybdates of the metals lead, zinc, aluminium, iron, barium, calcium, magnesium, chromium and titanium, either individually or in combination with phthalic acid and/or phthalic acid anhydride. Phthalic acid and/or phthalic acid anhydride is used in an amount up to 10 % by weight and preferably in an amount from 0.3 up to 3 % by weight of the pigment and the treatment preferably takes place in an aqueous medium at a temperature in the range from 70°to 80°C.

392064

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