Two-stage cure coating compositions
US6471185B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2001 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Jul 25, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D175/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention provides for a two-pack solvent based coating composition that cures in two stages when applied over substrates. The first stage of the cure takes place rapidly under ambient conditions to produce a coating surface that can be readily sanded or buffed. Thereafter, over a period of days a second stage cure takes place to produce a coating having excellent coating properties. Thus, a coated component, such as automotive body, can be speedily moved out from a spray booth without affecting the surface quality of the coated surface. As a result, coating operation productivity can be increased. The aforedescribed dual cure properties of the coating composition result from including in a binder component of the coating composition an acrylic polymer having secondary amine and hydroxyl functionalities. The composition is most suited for use in automotive refinish applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.