US 4,098,784 AGranted

Red-1-hydroxy-3,6-disulfo-8-acetamido-2-(3 phosphonophenylazo)naphthalene dyes

AssigneeBurlington Industries, Inc.

InventorsRonald Swidler, William A. Sanderson

Life of this patent

Estimating the term…

Abstract

A dye of the formula: ##STR1## and the alkali metal and ammonium salts thereof are disclosed as novel compositions of matter useful in reactive dyeing of cellulose fibers to give bright red dyeings which exhibit good lightfastness and color strength.

Claims2

Dependent claims

A dye of the formula:

##STR5## or the ammonium or an alkali metal salt thereof.

Dependencies are inferred from the claim text.

Facts

Application: 05/710,153Filed 30 Jul 1976 · continuation in part
Priority: 7 Jun 1972
Granted: 4 Jul 1978
Term ends: Not estimatedThe source records don’t support an estimate.

Classification20 codes

C07F 9/3882
Not used, see subgroups: arylalkanephosphonic acids
C07F 9/12
Esters of phosphoric acids: with hydroxyaryl compounds
C09B 1/32
Dyes with amino groups substituted by hydrocarbon radicals: substituted by aryl groups
C09B 1/34
Substituted by aryl groups: sulfonated

Family

Serial260,587Parent of this continuation-in-part · filed 7 Jun 1972
Serial441,393Parent of this continuation-in-part · filed 11 Feb 1974
Serial534,349Parent of this continuation-in-part · filed 18 Dec 1974
US 4,098,784 AThis patent

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

Timeline

Citations

Open elsewhere

patentgrep

Loading patent…