Coating line and process for forming a multilayer composite coating on a substrate
US7531074B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2003 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Jan 10, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C28/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for forming a multilayer composite coating on a substrate is provided. The process includes forming an electrodeposition coating layer on the substrate by electrodeposition of a curable electrodepositable coating composition over at least a portion of the substrate. Optionally, the coated substrate is heated to a temperature and for a time sufficient to cure the electrodeposition coating layer. A basecoating layer is formed on the electrodeposition coating layer by depositing an aqueous curable basecoating composition directly onto at least a portion of the electrodeposition coating layer. Optionally, the basecoating layer is dehydrated. A top coating layer is formed on the basecoating layer by depositing a curable top coating composition which is substantially pigment-free directly onto at least a portion of the basecoating layer. The top coating layer, the basecoating layer, and, optionally, the electrodeposition coating layer are cured simultaneously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.