Coating method
US5691002A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1996 |
| Grant date | Nov 25, 1997 |
| Priority date | — |
| Expiry date | Jan 31, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D1/007
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The coating method of the present invention comprises sequentially applying an amine-neutralized type aqueous intermediate coating composition and an amine-neutralized type aqueous top coating composition, the method being characterized in that a coating composition mainly comprising (A) an amine-neutralized base resin having a hydroxyl value of 30 to 150 KOH mg/g and an acid value of 15 to 50 KOH mg/g, (B) an amino resin and (C) an organic sulfonic acid amine salt is used as the amine-neutralized type aqueous intermediate coating composition. The method of the present invention can improve the adhesion between layers of a multi-layer coating film formed from aqueous coating compositions and chipping resistance of said coating film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.