MUMBAI, India, June 13 -- Intellectual Property India has published a patent application (202517050963 A) filed by Chemetall Gmbh, Frankfurt, Germany, on May 27, for 'alkaline compositions and method for cleaning zinc-magnesium surfaces.'
Inventor(s) include Six, Marcell; Schaus, Andre; and Lueckerath, Thorsten.
The application for the patent was published on June 13, under issue no. 24/2025.
According to the abstract released by the Intellectual Property India: "The present invention relates to a use of an aqueous alkaline composition having a pH value below 10.0, wherein the composition comprises besides water hydroxide anions a1), at least one complexing agent a2), at least one surfactant a3) and at least one of optionally condensed phosphate and borate anions a4) for cleaning of surfaces of substrates, wherein said surfaces are at least partially made of at least one kind of steel being coated at least in portion with at least one kind of zinc-aluminum- magnesium alloy, to a method for cleaning said aforementioned surface by making use of the aqueous alkaline composition, to a substrate having at least one cleaned surface obtainable therefrom, to a method for chemical pretreatment of said aforementioned cleaned substrate surface by making further use of an aqueous, coating composition being suitable to form a preferably conversion coating film onto said surface, and to a substrate having at least one chemically pretreated surface obtainable therefrom."
The patent application was internationally filed on Nov. 03, 2023, under International application No.PCT/EP2023/080654.
Disclaimer: Curated by HT Syndication.
