MUMBAI, India, Aug. 1 -- Intellectual Property India has published a patent application (202517059293 A) filed by Nihon Parkerizing Co. Ltd., Tokyo, on June 20, for 'agent for treating metal surface, method for treating surface of metallic material, and surface-treated metallic material.'
Inventor(s) include Murakawa, Shoma; Motozawa, Masahiro; and Kurosawa, Ryosuke.
The application for the patent was published on Aug. 1, under issue no. 31/2025.
According to the abstract released by the Intellectual Property India: "Provided is an agent for treating a metal surface with which it is possible to form a surface treatment layer having excellent hydrophilicity persistence, stain resistance, and molding processability. The present invention is an agent for treating a metal surface that contains a water-soluble polymer (A) and a surfactant (B), wherein the water-soluble polymer (A) is a copolymer containing a monomer unit having a sulfo group and/or a salt thereof and a monomer unit having an anionic functional group other than a sulfo group and salts thereof, the acid value is 200-500 mg KOH/g, the molar fraction of monomer units having a sulfo group and/or a salt thereof to the total monomer units in the copolymer is 20-50 mol% inclusive, the molar fraction of monomer units having an anionic functional group other than a sulfo group and salts thereof to the total monomer units in the copolymer is 50-80 mol%, and the surfactant (B) contains at least one selected from nonionic surfactants having an HBL of 13 or more and anionic surfactants."
The patent application was internationally filed on Jan. 18, 2024, under International application No.PCT/JP2024/001317.
Disclaimer: Curated by HT Syndication.
