Ultradurable coating composition
US10711155B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2017 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Apr 4, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2367/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A coating composition includes: a polymer prepared from a reaction mixture including: a hydroxyl functional prepolymer comprising a reaction product of a prepolymer mixture and a non-aromatic anhydride. The polymer includes at least two functional groups selected from hydroxyl groups, carboxyl groups and combinations thereof. The polymer includes 10-40 weight % of structural units derived from benzoic acid or substituted benzoic acid and greater than 15 weight % of structural units derived from a polyol having at least three hydroxyl groups based on the total weight of the polymer. A substrate at least partially coated with a coating composition and a method of preparing a coating composition are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.