Corrosion inhibitor composition for steel

Details Corrosion inhibitor composition for steel Corrosion inhibitor composition for steel

C - Chemistry, Metallurgy

23

F

C23F 11/167 (2006.01) C10M 173/02 (2006.01) C23F 11/10 (2006.01)

Patent

CA 2192450

Steel anticorrosion and lubricity composition consisting essentially of: (a) a surfactant; (b) at least one neutralized alkyl phosphate in a surfactant:phosphate weight ratio in the range between 10:1 to 1:10, said phosphate having the general formula: (RO)m-P-(O)-(OH)n wherein R is an alkyl group having 4 to 20 carbon atoms; m is 1 or 2, and n is 3 - n; and optionally (c) 5 to 40 weight percent, based on the combined weight of said surfactant and said phosphate, of at least one carboxylic acid which has both a hydrophilic and a hydrophobic portion.

Une composition protégeant l'acier de la corrosion et assurant sa lubrification est constituée principalement par: (a) un tensioactif; (b) au moins un phosphate alkyle neutralisé dans un rapport pondéral tensioactif:phosphate compris entre 10:1 et 1:10, ce phosphate ayant la formule générale (RO)¿m?-P-(O)-(OH)¿n?, dans laquelle R représente un groupe alkyle possédant 4 à 20 atomes de carbone; m vaut 1 ou 2, et n vaut 3 - n; et éventuellement (c) 5 à 40 pour cent en poids, sur la base du poids combiné du tensioactif et du phosphate, d'au moins un acide carboxylique possédant à la fois une partie hydrophile et une partie hydrophobe.

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