Coating compositions including a polyester, articles, and methods of coating
US11827803B2 · kind B2 · utility
0Cited by
5References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 18, 2022 |
| Grant date | Nov 28, 2023 |
| Priority date | — |
| Expiry date | Nov 18, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/2241
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present disclosure provides a coating composition useful as a coating on food cans, and particularly as interior white or gold food can coatings. The coating composition includes a polyester polymer preferably having a number average molecular weight (Mn) of less than 10,000, a glass transition temperature (Tg) of more than 60° C., and a hydroxyl value greater than 10 mg KOH/g resin. The polyester preferably includes one or more cyclic groups selected from a mono-cyclic group having five ring members or less, a polycyclic group, or both, preferably in a backbone of the polyester polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.