Imperial Chemical Industries Limited

Zeneca Limited

Nigel Hughes

Prakash Patel

Ronald W Kenyon

David Greenwood

Nigel Hall

Suraj L Hindagolla

Peter Gregory

David J Milner

Brian R Fishwick

David F Newton

David Brierley

Colin William Greenhalgh

Gareth Andrew DeBoos

James F Bullock

William M Stark

Donald M Gunn

Leslie A Mather

Brian Balmforth

Benzodifurantriones of Formula (1): ##STR1## in which W is unsubstituted or substituted aryl, a process for their preparation via dioxo intermediates and processes for their conversion into benzodifuranone dyes and compounds of Formula (7): ##STR2## are provided wherein R.sup.3 is --H, --COR.sup.2, --SO.sub.2 R.sup.2 -- which R.sup.2 is alkyl, cycloalkyl, aryl or aralkyl and R.sup.4 is --COOR.sup.2, --CONRR.sup.1 in which R and R.sup.1 each independently is --H, alkyl, cycloalkyl, aryl or aralkyl; --COOH or the alkali metal, alkaline earth metal or ammonium salts thereof; or --COX.sup.2 -- which X.sup.2 is halo.

Benzofuranone and benzodifuranone compounds

Benzodifurantrione compounds and process

A process for the preparation of a substituted acetic acid of the Formula (2): ##STR1## wherein --X--Z is an optionally substituted aromatic or heteroaromatic optionally substituted amino radical; by reacting a compound of the Formula (7):

Process for the preparation of substituted acetic acids

A dyestuff comprising a mixture of two or more compounds of Formula (1): ##STR1## wherein: R.sup.1 & R.sup.2 are each independently selected from --H, nitro, halogen, C.sub.1-6 -alkyl, C.sub.1-6 -alkoxy, phenyl, phenoxy, C.sub.1-6 -alkoxyphenyl, cyano, --COOR and --SR, hydroxy, OCO.C.sub.1-6 -alkyl, --SO.sub.2 OH, --SO.sub.2 Cl, --SO.sub.2 C.sub.1-6 -alkyl, --NR.sub.2 and --CONR.sub.2, --OC.sub.1-6 -alkyl-COOR.sup.7 ; --OC.sub.1-6 -alkylOR.sup.7, --OC.sub.1-6 -alkylOR.sup.7 OR.sup.7, and --OC.sub.1-6 -alkylOCOR.sup.7, --OC.sub.2-6 -alkenyl, --OC.sub.1-6 -alkyl-Z, --OC.sub.1-6 -alkylOC.sub.1-6 -alkyl-Z and --OC.sub.1-6 -alkylSC.sub.1-6 -alkyl-Z in which Z is a 5-, 6- or 7- membered saturated or unsaturated heterocyclic residue; and

Mixed and mixed crystal benzodefuranone dyes

A dye which, in the free acid form, has the formula ##STR1## wherein W is COOH

Anionic dye

A process for the preparation of a polycyclic dye of the Formula (1): ##STR1## by reacting a substituted acetic acid of the Formula (2): ##STR2## with a compound of the Formula (3): ##STR3## and oxidation of the intermediate leuco compound to dehydrogenate the peripheral heterocyclic rings wherein

Process for preparation 2,6-dihydrobenzo[1:26, 4:5-6]-difuran dyes

Anionic dye having high water-fastness

A compound of the formula: ##STR1## wherein A is ##STR2## B is a group of the formula: ##STR3## when B is of Formula III, X is of Formula III;

1,1,5,5-tetra(4-aminophenyl)-pentadi-1,4-ene compounds

A water-soluble dye, free from cellulose reactive groups, of the formula: ##STR1## wherein each of Ar.sup.1 and Ar.sup.2, independently, represents an optionally substituted phenyl or naphthyl radical,

Water-soluble dye

A phthalocyanine compound of the formula:

Substituted phthalocyanine

The disperse monoazo dyestuffs, free from sulphonic acid groups, which are represented by the formula: ##SPC1## Wherein X is alkyl, substituted alkyl, phenyl or optionally substituted carbamoyl; Y is a hydrogen atom or a substituent; and Z is a hydrogen atom or an optionally substituted alkyl, cycloalkyl, aryl or heterocyclic radical or an optionally substituted amino group, a process for the manufacture of the said dyestuffs and their use for coloring synthetic textile materials.

Growing community of inventors

Oldham, United Kingdom

Nigel Hughes