High refractive index, durable hard coats
US7491441B2 · kind B2 · utility
47Cited by
20References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2004 |
| Grant date | Feb 17, 2009 |
| Priority date | — |
| Expiry date | Feb 1, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The development of new compositions and new aromatic sulfur acrylate monomers results in improved hardcoat films, and improved optical films that contain the hard coat films. The films provide improved display systems when incorporated thereon. The combination of functionalized zirconia nanoparticles with multifunctional acrylate crosslinkers and high index of refraction aromatic sulfur acrylates, about 1.58 or greater, produces abrasion resistant hard coats that have relatively high refractive indices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.