DETERGENT FOR CLEANING OF METALLIC SURFACE Russian patent published in 2008 - IPC C11D1/825 C11D3/04 C11D3/30 C11D3/36 

FIELD: chemistry.

SUBSTANCE: invention is used in metallurgy industry for degreasing rolled metal products on the aggregates of continuous processing before application of different kinds of coatings (zinc, galvalume and etc.). The agent contains in g/l: sodium hydroxide 5.4-12.0, sodium carbonate 3.3-8.2, trisodium phosphate 0.6-1.25, sodium tripolyphosphate 1.0-2.5, hyrdroxyethylated alkylphenol on the basis of propylene trimer containing in a molecule 12 moles of ethylene epoxide 0.17-0.37, polyethyleneglycol esters of synthetic primary alcohol of C₁₂-C₁₄ fraction 0.14-0.23, alkylphenilpolyoxyethelenglycol acetal 0.11-0.28, chelate 0.02-0.075, defoaming agent 0.001-0.0025, water - 1 liter. Mass ratio of the blend of the organic and inorganic part of the composition to the blend of surfactants is 24.5:1. Chelate consists of disodium salt of tetrine, hydrous and trisodium salt of hydroxyetheledenediphosphonic.

EFFECT: increase of purification degree of metallic surface thanks to high cleaning capability of the composition and foam forming decrease.

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