Cationic electrodeposition coating composition
US12351735B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2020 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Oct 31, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C22/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
To provide a cationic electrodeposition coating composition manifesting excellent anticorrosive property at edges and in flat areas, along with finish quality, even in a state of thin film, as well as a coated article demonstrating these excellent coating film performances, the cationic electrodeposition coating composition includes an amino group-containing epoxy resin (A), a blocked polyisocyanate compound (B), and crosslinked epoxy resin particles (C), wherein the crosslinked epoxy resin particles (C) are contained by 0.1 to 40 parts by mass relative to the total mass in solids content of the amino group-containing epoxy resin (A) and blocked polyisocyanate compound (B); the number-average molecular weight of the crosslinked epoxy resin particles (C) is under 100,000; and/or the volume-average particle size of the crosslinked epoxy resin particles (C) is 30 to 1,000 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.