Selectively light-absorptive material, coating composition containing the same, and filter manufactured using the coating composition for color displays
US6824712B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2002 |
| Grant date | Nov 30, 2004 |
| Priority date | — |
| Expiry date | Sep 5, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B47/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A selectively light-absorptive material for a color display, comprising a tetrazaporphyrine derivative having the formula: where R1, R2, R3, R4, R5, R6, R7 and R8 are independently selected from the group consisting of hydrogen; an unsubstituted phenyl group, an alkyl group; an alkoxy group; a nitro group; halogen atoms; a halide; a cyano group; an alkylamino group; an aminoalkyl group; and a phenyl group having a substitutent selected from an alkyl group, an alkoxy group, a nitro group, halogen atoms, a halide, an alkylamino group, an aminoalkyl group and a cyano group, or two neighboring substituents among R1, R2, R3, R4, R5, R6, R7 and R8 are fused and substituted with 1 to 3 aromatic cyclic compounds, and unsubstituted groups among R1, R2, R3, R4, R5, R6, R7 and R8 are independently selected from the group consisting of hydrogen, an alkyl group, an alkoxy group, an allyl group, halogen atoms, a halide, a cyano group and a nitro group. The material also comprises a plastic resin, an organic solvent and/or an infrared ray blocking agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.