Composition for reducing the removal of material by pickling in the pickling of metal surfaces that contain galvanized and/or ungalvanized steel
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United States of America Patent
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Sep 21, 2021
Grant Date -
Apr 18, 2019
app pub date -
Apr 28, 2017
filing date -
Apr 29, 2016
priority date (Note) -
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Abstract
An aqueous composition for reducing corrosive removal of material in pickling of metallic surfaces comprising bare and/or galvanized steel. The composition includes a mixture of a compound of the formula R1O—(CH2)x—C≡C—(CH2)y—OR2 in which R1 and R2 are both H, and a compound of the formula R1O—(CH2)x—C≡C—(CH2)y—OR2 in which R1 and R2 are each, independently of one another, an HO—(CH2)w— group with w≥2. X and y are each, independently of one another, from 1 to 4 in each of the two compounds of the formula R1O—(CH2)x—C≡C—(CH2)y—OR2. A process for pickling a metallic surface with reduced corrosive removal of material is disclosed.
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