Water-insoluble colorants, process for preparing them and their

Details Water-insoluble colorants, process for preparing them and their Water-insoluble colorants, process for preparing them and their

1976-04-14

1977-08-09

Daus, Donald G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260251A, 2602564C, 2602565R, 260260, C07D49122

Patent

active

040410366

ABSTRACT:
The condensation of barbituric acid, thiobarbituric acid or imino-barbituric acid with 2-hydroxy-3-carboxy-1-naphthaldehydes or their arylamides in a solvent at 20.degree. to 180.degree. C yields colored compounds which are useful as pigments.

REFERENCES:
patent: 3931182 (1976-01-01), Kast et al.
Beilsteins Handbuch der Organischen Chemie, 1950, pp. 419-420.
Vvedenskii, "Chemical Abstracts", vol. 72, 1970, col. 111406t.

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