Photochromic materials incorporated in polymer backbone
US8236466B2 · kind B2 · utility
2Cited by
4References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2009 |
| Grant date | Aug 7, 2012 |
| Priority date | — |
| Expiry date | Dec 24, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31504
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Exemplary embodiments provide compositions and methods for making and using an erasable medium that can include a photochromic layer disposed over a substrate. The photochromic layer can include one or more photochromic molecule-polymer systems, wherein each of the one or more photochromic molecule-polymer systems can include a photochromic molecule covalently bonded within a polymer main chain, the photochromic molecule including one or more photochromic moieties (PM) linked together via a linker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.