Dyes of the 2,4-dihydroxyquinoline series

Abstract

Abstract New dyes having the formula: IN WHICH R1 denotes a hydrogen atom, a halogen atom or a nitro group, n denotes the integer 1 or 2, R2 denotes a hydrogen atom, an unsubstituted or substituted alkyl group having one to three carbon atoms, an aromatic radical or, together with DENOTES A FIVE-MEMBERED OR SIX-MEMBERED CARBOCYCLIC OR HETEROCYCLIC RING WHICH MAY CONTAIN SUBSTITUENTS AND CONDENSED RINGS, AND R3 may also denote an unsubstituted or substituted alkyl group having one to three carbon atoms or an aliphatic, aromatic or heterocyclic radical which may be attached by way of -CO-. The dyes are pigment dyes.

Inventors

• 👤 M Gaeng
• 👤 P Dimroth

Bibliographic Details