Coating method
US4981759A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 1988 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | May 2, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31522
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A coating method, which comprises PA1 (i) applying to a substrate a multilayer film-forming cationic electrodeposition paint composed of PA2 (A) a cationic electrodepositable epoxy resin having a surface tension of 40 to 60 dynes/cm and being able to form a cathodically electrodepositable aqueous bath by neutralization with an acid, and PA2 (B) a nonionic film-forming resin having a surface tension of 25 to 45 dynes/cm, PA1 the weight ratio of resin (A) to resin (B) being from 60:40 to 98:2 and the surface tension of resin (A) being greater than that of resin (B), and curing the coated film by heating, PA1 (ii) applying a water-base or organic solvent-base colored paint as a first top coat, and PA1 (iii) applying as a second top coat a powder paint capable of forming a transparent film which may be colored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.