Coating method with crosslinked coatings from two coat-one bake systems
US4759961A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1987 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | May 12, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2475/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In a method for forming coatings, comprising the steps of applying a base coating containing a coloring pigment and/or a metallic pigment to produce a base coat, applying a topcoating containing a hydroxyl group-containing resin and a polyisocyanate compound over the base coat, and curing the coats at a temperature range between room temperature to about 140.degree. C., the method which is characterized in that the base coating contains the following as a vehicle component; PA1 (a) a resin having hydroxyl group and carboxyl group in the molecule, PA1 (b) a combination of the resin having hydroxyl group in the molecule and a catalyst for promoting the reaction between the hydroxyl group of the resin and the isocyanate group of the polyisocyanate compound in the topcoating or PA1 (c) a combination of the resin having hydroxyl group and carboxyl group in the molecule and a catalyst for promoting the reaction between the hydroxyl group of the resin and the isocyanate group of the polyisocyanate compound in the topcoating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.