Substituted naphthalocyanines and their use

Details Substituted naphthalocyanines and their use Substituted naphthalocyanines and their use

1990-11-16

1993-07-20

Page, Thurman K.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540130, 430495, 430945, 558414, 558415, 558416, 558423, 558425, C09B 4704, C09B 4730

Patent

active

052295079

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.

REFERENCES:
patent: 4725525 (1988-02-01), Kenney et al.
patent: 4904567 (1990-02-01), Naeda et al.
patent: 4943681 (1990-07-01), Sato et al.
patent: 4960538 (1990-10-01), Itoh et al.
J. Chem. Soc. Perkin Trans (1988) Michael J. Cook pp. 2453-2458.

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