Adhesion promoters for UV flexographic inks and coatings
US11643562B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Jul 9, 2021 |
| Grant date | May 9, 2023 |
| Priority date | — |
| Expiry date | Jul 9, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2201/54
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides water-based energy curable compositions that exhibit improved printability, adhesion, opacity, and wash-up properties. The compositions comprise one or more inert water-based polyurethane resins and one or more water-based phosphate esters. Addition of the inert polyurethane resins and phosphate esters improves adhesion of the energy curable compositions to a variety of substrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.