Photochromic polymer and composition comprising photochromic polymer
US8865029B2 · kind B2 · utility
8Cited by
2References
20Claims
0Family size
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Key dates
| Filing date | Jun 5, 2009 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Aug 30, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L83/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A photochromic polymer comprising at least one siloxane oligomer and at least two photochromic groups covalently linked to one or both terminuses of the siloxane oligomer and compositions containing photochromic siloxane polymers with narrow polydispersity. The photochromic polymer enhances switching speed in rigid host polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.