Phthalocyanine compounds, process for preparing the same, and optical recording medium made using the same
US5998609A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1998 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Jun 12, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/21
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phthalocyanine compound of a structural formula of phthalocyanine represented by the general formula (1): ##STR1## wherein 1 to 8 of a total 16 positions are substituted with a phenoxy group, the phenoxy group at either of the ortho positions is substituted with an aryl group which may be substituted, all the atoms in the aryl group and the substituents at the residual ortho positions excluding the hydrogen atoms assume a total atomic radius of not less than 6.0 .ANG., and a central atom group M contains a metal atom of not less than trivalence, a bromine-substituent of the compound, a phthalocyanine composition comprising the phthalocyanine compound and the bromine atom-containing phthalocyanine compound, and an optical recording medium containing it in a recording layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.