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:
Aug. 02, 2022
Filed:
Jul. 20, 2018
Chemetall Gmbh, Frankfurt, DE;
Aliaksandr Frenkel, Frankfurt am Main, DE;
Ron Eilinghoff, Frankfurt am Main, DE;
Martin Droll, Paderborn, DE;
Chemetall GmbH, Frankfurt, DE;
Abstract
Aqueous coating compositions are provided. The aqueous compositions include at least one type of organic polymer particles having an average particle size of 10 to 1000 nm, including isocyanate-reactive polymers (A), one or more ketoxime- and/or pyrazole-blocked polyisocyanates (B) including at least one aromatic hydrocarbyl radical or at least one cycloaliphatic hydrocarbyl radical, at least one polyanionic polymer (C), at least one complex fluoride (D) selected from the group consisting of hexa- or tetrafluorides of metallic elements of groups IVb, Vb and VIb of the Periodic Table of the Elements, and at least one aminosilane (E), wherein the aqueous coating compositions have a pH of 3 to 5, and have a total solids content of 5% to 35% by weight. Also provided are processes for producing these aqueous coating compositions, processes for coating metal ion-releasing surfaces with the aqueous coating compositions, and coatings obtained therefrom.