Naphthalocyanine derivatives, production thereof and optical rec

Details Naphthalocyanine derivatives, production thereof and optical rec Naphthalocyanine derivatives, production thereof and optical rec

1991-09-10

1993-12-07

Brust, Joseph Paul

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

558413, C07C25552, C07D20962

Patent

active

052684857

ABSTRACT:
A naphthalocyanine derivative having at least one substituent of the formula: SO.sub.2 R.sup.1, wherein R.sup.1 is an alkyl group, a substituted alkyl group or an aryl group is excellent in ability to absorb diode laser beams and suitable for use in an optical recording medium.

REFERENCES:
patent: 2727043 (1955-12-01), Rosch et al.
patent: 2739154 (1956-03-01), Rosch et al.
patent: 2739155 (1956-03-01), Rosch et al.
patent: 4048212 (1977-09-01), Guglielmetti

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