Optical information recording media and bisazo compounds for use

Details Optical information recording media and bisazo compounds for use Optical information recording media and bisazo compounds for use

1992-07-24

1994-05-17

Lee, Mary C.

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

Organic compounds

Azo

534561, 534688, 534759, 534829, 534830, 534831, 534835, C09B 35021

Patent

active

053129067

ABSTRACT:
Bisazo compounds of formula (I), an intermediate for producing the bisazo compound of formula (I), and trisazo compounds of formula (II) for use in optical information recording media, and methods of producing these compounds are disclosed: ##STR1## wherein R represents hydrogen, an alkyl group having 1 to 20 carbon atoms; an aryl group selected from the group consisting of phenyl group, naphthyl group, mesityl group, and tri-t-butyl phenyl group; an alkoxyl group having 1 to 4 carbon atoms; a nitro group; a cyano group; chlorine; or bromine; n is an integer of 1, 2, or 3; and C.sub.p represents a coupler residue.

REFERENCES:
patent: 4582771 (1986-05-01), Ohta
patent: 4663442 (1987-05-01), Ohta
patent: 4743523 (1988-05-01), Yamashita et al.
patent: 4868080 (1989-09-01), Umehara et al.
Ota, Chemical Abstracts, 108:46819a (1988).

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