Curable high refractive index compositions
US6656990B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2001 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Aug 19, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/121
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention provides an organic/inorganic hybrid material with a high refractive index at telecommunications wavelengths. Energy curable compositions of the present invention include condensed metal oxide nanoparticles, a high refractive index organometallic coupling agent, an energy curable organometallic coupling agent, and a high refractive index monomer or oligomer. Polymeric materials of the present invention include condensed metal oxide nanoparticles having a mixture of organometallic coupling agents covalently bound to the exterior surface of the nanoparticles and a high refractive index solid polymer matrix, wherein the mixture of organometallic coupling agents includes a high refractive index coupling agent, and a coupling agent covalently bound to the polymer matrix. The materials of the present invention are useful in making optical devices for telecommunications applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.