Substituted naphthalocyanines and their use
US5229507A · kind A · utility
5Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1990 |
| Grant date | Jul 20, 1993 |
| Priority date | — |
| Expiry date | Nov 16, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compounds of the formula I ##STR1## in which R is the group --OC.sub.m H.sub.2mn R.sub.1 and M is two H or is Cu or Ni, R.sub.1 is --OH, --Cl, --Br, C.sub.1 -C.sub.30 alkoxy or --OC(O)R.sub.2, m is an integer from 2 to 6 and n is a number from 1 to 20, and R.sub.2 is C.sub.1 -C.sub.20 alkyl, C.sub.2 -C.sub.20 alkenyl, cyclopentyl, cyclohexyl or C.sub.6 -C.sub.10 aryl or C.sub.6 -C.sub.10 arylmethyl which is unsubstituted or substituted by C.sub.1 -C.sub.18 alkyl. The compounds are dyes and IR absorbers and can be used for optical information storage systems employing diode lasers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.