Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1980-04-08
1982-03-23
Daus, Donald G.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
548101, C07F 1504
Patent
active
043213901
ABSTRACT:
A process for the preparation of insoluble metal complex colorants of the formula ##STR1## where R, R.sup.1, R.sup.2 and R.sup.3 may be identical or different and each is hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, chlorine, bromine, trifluoromethyl or phenyl,
REFERENCES:
patent: 3919235 (1975-11-01), Crounse et al.
patent: 3966753 (1976-06-01), Crounse
patent: 4065462 (1977-12-01), Frey
patent: 4122261 (1978-10-01), Crounse et al.
BASF - Aktiengesellschaft
Daus Donald G.
Rivers Diana G.
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