The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 21, 2021
Filed:
Apr. 28, 2017
Chemetall Gmbh, Frankfurt, DE;
Anna Verena Mohr, Frankfurt am Main, DE;
Chemetall GmbH, Frankfurt, DE;
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 RO—(CH)—C≡C—(CH)—ORin which Rand Rare both H, and a compound of the formula RO—(CH)—C≡C—(CH)—ORin which Rand Rare each, independently of one another, an HO—(CH)— 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 RO—(CH)—C≡C—(CH)—OR. A process for pickling a metallic surface with reduced corrosive removal of material is disclosed.