Black-pigmented structured high molecular weight material
US6010567A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1998 |
| Grant date | Jan 4, 2000 |
| Priority date | — |
| Expiry date | Apr 8, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/22
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention relates to a black-pigmented high molecular weight organic material which is structured from a radiation-sensitive precursor by irradiation, the pigmentation of which material consists of coloured organic pigments, at least one of which is in latent form before irradiation. This material is preferably used as a thin layer which is built up in the form of patterns on a transparent substrate and which can be used, for example, as black matrix for optical colour filters. This invention also relates to a process for the preparation of this material as well as to novel soluble derivatives of yellow disazo condensation pigments which can be used in this process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.