Coating compositions, elastic barrier coatings formed therefrom, and methods of applying such coatings
US11718764B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Jan 18, 2017 |
| Grant date | Aug 8, 2023 |
| Priority date | — |
| Expiry date | Sep 17, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2312/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A coating composition includes an aqueous carrier medium, at least a first polymer, and polymeric core-shell particles dispersed in the aqueous carrier medium. The first polymer includes: (i) a barrier segment having aromatic groups and urethane linkages, urea linkages, or a combination thereof; and (ii) an elastomeric segment having a glass transition temperature of less than 0° C. The barrier segment can make up at least 30% of the first polymer, based on the total solids weight of the first polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.