Paint

Details Paint Paint

C - Chemistry, Metallurgy

09

D

117/209, 31/34

C09D 5/08 (2006.01)

Patent

CA 1339900

A top coat paint for protecting a surface from external rust-staining comprises a film-forming binder and a solid substance having a water solubility of at least 0.1 gram per litre and capable of reacting with rust. The substance capable of reacting with rust is capable of chelating iron and has a high formation constant for complexation with Fe(III). The chelate complex formed with Fe(III) is substantially colourless and no less water-soluble than the said substance. The said substance is (a) a salt of a substituted aliphatic organic acid or of a 1,3-diketone, or (b) an aliphatic hydroxamic acid of the formula Image where R is an alkyl group of 1 to 18 carbon atoms, or a salt thereof. It may be produced by mixing the ingredients.

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