High performance water-based primer
US7217756B2 · kind B2 · utility
3Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2004 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | Dec 18, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/34
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to an aqueous primer composition for use in manufacturing flexographic printing plates. The aqueous primer composition comprises a polyurethane, a copolymer, a layered silicate, and optionally a surfactant and/or a dye or pigment. The use of the layered silicate as a filler in the primer composition produces an improved primer composition with a stronger water/solvent resistance and less delamination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.