Infrared absorption filter
US7772356B2 · kind B2 · utility
1Cited by
6References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2005 |
| Grant date | Aug 10, 2010 |
| Priority date | — |
| Expiry date | Aug 14, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/208
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention discloses an infrared absorption filter which enables a coloring matter having infrared absorptivity to be contained or dispersed uniformly in a high concentration and has excellent durability, and an infrared absorption panel comprising this infrared absorption filter. The infrared absorption filter comprises a polycarbonate resin which contains 20 to 100 mol % of a recurring unit having a fluorene skeleton represented by the formula (1) and 0 to 80 mol % of a recurring unit represented by the formula (2), and a coloring matter having infrared absorptivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.