Corrosion inhibiting system containing alkoxylated alkylphenol a

Details Corrosion inhibiting system containing alkoxylated alkylphenol a Corrosion inhibiting system containing alkoxylated alkylphenol a

1987-12-24

1989-09-19

Terapane, John F.

Compositions

Leather or fur treating

252 8552, 252392, 422 16, 564347, E21B 4102, C23F 1104

Patent

active

048678880

ABSTRACT:
A series of water-soluble, or at least water-dispersible, corrosion inhibiting solutions are disclosed which contain about 2 ppm to about 70%, preferably about 3 ppm to about 200 ppm, of an ethoxylated, propoxylated alkylphenol amine represented by the formula: ##STR1## wherein R is hydrogen or an alkyl group containing about 5 to about 12 carbon atoms, R' is an alkyl group containing about 5 to about 12 carbon atoms, x equals about 1 to about 20, z equals about 1 to about 20, a equals about 1 to about 20, and b equals about 1 to about 20. The salt reaction products of the instant alkoxylated amine and an organic acid selected from the group consisting of hydroxyacetic acid, a fatty acid, a dicarboxylic acid, a dimer-trimer acid, an acidic phosphorus containing compound, and mixtures thereof are also effective in controlling sour and sweet corrosion. A method is also disclosed for protecting metal from corrosion by contacting the metal with an effective amount of the amine or the amine/acid reaction products, in a continuous or batch treatment.

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patent: 4636256 (1987-01-01), Valone
patent: 4650865 (1987-03-01), Lange et al.

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