Low temperature curing coating composition containing sag control agent and use thereof
US10544326B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2013 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | Nov 7, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/21
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present disclosure is directed to a coating composition for producing coatings sag-free at high coating thicknesses, being quick dry and having good appearance. This disclosure is further directed to a coating composition comprising a crosslinking activator comprising: a) one or more alkylated melamines that are essentially unreactive to a polyisocyanate, and b) a polyurea sag control agent formed by reacting an amine and an isocyanate in the presence of the alkylated melamines. The coating composition can be used to form coating layers having a sag-free wet coating thickness in a range of from 10 to 36 mil (about 0.25 to 0.91 mm). The coating composition can be particularly suitable for vehicle coatings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.