Plate and sheet comprising near infrared absorbing composition
US5236633A · kind A · utility
11Cited by
3References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1992 |
| Grant date | Aug 17, 1993 |
| Priority date | — |
| Expiry date | Aug 24, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/2533
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A plate or a sheet being capable of absorbing near IR-rays, which is prepared by heating both at least a raw material of a transparent polymer and a mixture of a thiourea compound and a copper compound. This invention provides superior optical materials for shielding sunlight thermic rays, better information recording materials and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.