Microstructure-bearing articles of high refractive index
US6844950B2 · kind B2 · utility
67Cited by
7References
25Claims
0Family size
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Key dates
| Filing date | Jan 7, 2003 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Mar 16, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24893
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Blends of oligomeric urethane multi(meth)acrylate; optionally at least one other monomer selected from the group consisting of acrylic monomers, styrenic monomers and ethylenically unsaturated nitrogen heterocycles, preferably a polyol multi(meth)acrylate; and nanoparticles of an ethylenically unsaturated, preferably (meth)acrylic-functionalized, titanium or zirconium compound can be cured by ultraviolet radiation in contact with a photoinitiator to produce optical resinous articles having high refractive indices, haze ratings of at most 5% and other properties which may be tailored according to the desired use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.