MUMBAI, India, July 31 -- Intellectual Property India has published a patent application (202647088253 A) filed by Nippon Paint Automotive Coatings Co. , Ltd. on July 20, 2026, for Cationic Electrodeposition Coating Composition And Method For Producing Same.
Inventors include Kano, Hirohisa; Oda, Yoshinori; Shirako, Takahiro; and Yoshikawa, Shinya.
The application for the patent was published on July 24, 2026, under issue no. 30/2026.
Abstract: The purpose of the present invention is to improve corrosion resistance and throwing power, which are properties inherently required for cationic electrodeposition coating compositions, by adding a specific surfactant. The present invention provides a cationic electrodeposition coating composition comprising a resin emulsion (i) and a pigment dispersion paste (ii), wherein the resin emulsion (i) contains an amine-modified epoxy resin (A) and a blocked isocyanate curing agent (B), the pigment dispersion paste (ii) contains a bismuth compound (C), an inorganic pigment (D), a pigment dispersion resin (E), and a surfactant (F), the pigment dispersion resin (E) has a cationic group, and the surfactant (F) is a nonionic surfactant having a polyoxyalkylene structure and having an HLB value of 14.8 to 18.7 inclusive, a solubility parameter (SP value) of 11.0 to 12.5 inclusive, and a weight average molecular weight of 1500 to 7000 inclusive. The present invention also provides a method for preparing the cationic electrodeposition coating composition.
Disclaimer: Curated by HT Syndication.
