US 4,689,403 A · Disazo pigment from condensation of carboxylic acid chloride with 2,5-dichloro-1,4-phenylene diamine

Abstract

The present invention concerns the disazo pigment of the formula ##STR1## The new pigment is useful for coloring plastic material in pure red shades of high tinctorial strength and outstanding fastness to light and migration.

Claims1

Dependent claims

The compound of the formula ##STR4##

Dependencies are inferred from the claim text.

Facts

Application

06/372,891Filed 29 Apr 1982 · continuation in part

Priority

CH 11755/6615 Aug 1966

Granted

25 Aug 1987

Term ends

Not estimatedThe source records don’t support an estimate.

Classification2 codes

C09B 43/38
By reacting carboxylic or sulfonic groups, or derivatives thereof, with amines; by reacting keto-groups with amines: by reacting two or more…
C09B
Organic dyes or closely-related compounds for producing dyes

Family

Serial659,041Parent of this continuation-in-part · filed 8 Aug 1967

Serial41,096Parent of this continuation-in-part · filed 27 May 1970

Serial576,947Parent of this continuation · filed 12 May 1975

Serial821,933Parent of this continuation · filed 4 Aug 1977

Serial914,827Parent of this continuation · filed 12 Jun 1978

Serial324,708Parent of this continuation-in-part · filed 24 Nov 1981

US 4,689,403 AThis patent

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

Disazo pigment from condensation of carboxylic acid chloride with 2,5-dichloro-1,4-phenylene diamine

Life of this patent

Abstract

Claims1

Disazo pigment from condensation of carboxylic acid chloride with 2,5-dichloro-1,4-phenylene diamine

Life of this patent

Abstract

Claims1