Polyheterosilxoanes for high refractive index materials
US8962091B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Jan 5, 2012 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Jan 5, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyheterosiloxane compositions are disclosed containing at least 70% by weight of the following components: (A) a first metal (M1) selected from Ti, Zr, or Zn, (B) a second metal (M2) selected from a non-lanthanide metal, (C) siloxy units having the formula R2SiO2/2 or R′SiO3/2, where R′ is independently a hydrocarbon group or halogen substituted hydrocarbon group containing 1 to 18 carbon atoms. The disclosed compositions are useful to prepare high refractive index materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.