Photodegradation-resistant electrodepositable coating compositions with improved throw power and processes related thereto
US6869513B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2001 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | Feb 9, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D3/0254
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention provides a photodegradation resistant curable electrodepositable coating composition which includes one or more ungelled, active hydrogen-containing cationic sulfonium salt group-containing resins which are electrodepositable on a cathode, and one or more curing agents having cationic groups or groups which are capable of forming cationic groups. The invention also provides processes for coating an electroconductive substrate with the coating composition, to form single layer or multi-layer composite coatings. Also provided is a multi-layer composite coating in which the electrodepositable coating composition is used to form the primer layer. The compositions have improved throw power versus typical sulfonium salt electrodepositable compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.