Coating system for RMA crosslinkable coating compositions
US11542395B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2018 |
| Grant date | Jan 3, 2023 |
| Priority date | — |
| Expiry date | Jul 28, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D167/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a coating system comprising I) a primer coating composition comprising a binder component PA that contains primary amine functionality blocked with a ketone or aldehyde, a binder component PB that contains acetoacetate or acetoacetamide functional groups and II) a RMA crosslinkable coating composition a component A with at least two acidic protons C—H in activated methylene or methine groups, a component B with at least two activated unsaturated C═C groups and a base crosslinking catalyst C. The invention also relates to the use of the specified primer coating composition for improving adhesion of a RMA crosslinkable coating composition, in particular to metal substrates, to a method for coating a substrate and to coated substrates coated with the coating system of the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.