Optically active poly(aryl)ethers containing optically pure spirobindane and indane moieties
US5856422A · kind A · utility
5Cited by
10References
22Claims
0Family size
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Key dates
| Filing date | Oct 24, 1997 |
| Grant date | Jan 5, 1999 |
| Priority date | — |
| Expiry date | Oct 24, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Optically active poly(aryl)ether polymers prepared from monomers containing optically pure spirobiindane and/or indane moieties are disclosed. The chiral poly(aryl)ether polymers are of high molecular weight and exhibit high optical rotations. In addition, the polyethers are thermally stable at high temperatures and exhibit excellent hydrolytic resistance making them useful in high temperature processing applications, in the fabrication of optoelectronics devices, and as polarizing coatings and filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.