US 4,392,999 AGranted

Monoazo pigments containing hydroxynaphthoylamino benzimidazolone radical

AssigneeCiba-Geigy Corporation

InventorsRolf Muller, Armand Roueche, Paul Muller, Karl Ronco

Life of this patent

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Abstract

The instant invention relates to monoazo pigments containing a hydroxynaphthoylaminobenzimidazolone radical which correspond to the formula ##STR1## said new pigments being useful for coloring high molecular materials in orange to brown shades of especially good fastness properties.

Claims3

Dependent claims

A monoazo pigment corresponding to the formula ##STR19## wherein X.sub.6 is hydrogen or methyl.

Dependencies are inferred from the claim text.

Facts

Application: 06/301,807Filed 14 Sep 1981 · continuation
Priority: CH 6868/773 Jun 1977
Granted: 12 Jul 1983
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

C09B 29/20
Ortho-Hydroxy carbonamides: of the naphthalene series
C09B 43/32
Preparation of azo dyes from other azo compounds: by reacting carboxylic or sulfonic groups, or derivatives thereof, with amines; by reacting…
C09B
Organic dyes or closely-related compounds for producing dyes

Family

Serial911,002Parent of this continuation · filed 30 May 1978
Serial147,817Parent of this continuation · filed 8 May 1980
US 4,229,344 AParent of this continuation · filed 21 Oct 1980
US 4,392,999 AThis patent

From the US filing history. Foreign family members aren’t listed.

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