Abstract: A polycylic dye of the Formula (1): ##STR1## wherein: R.sup.1 is --OSO.sub.2 R in which R is optionally substituted alkyl, alkoxy, aryl, alkoxyaryl, cycloalkyl or heteroaryl;Ring A is unsubstituted or is substituted by from one to three groups; andRing B is unsubstituted or is substituted by one or two groups in addition to the group R.sup.1.Dyes of the present invention are useful for the coloration of textile materials particularly synthetic textile materials such as polyester, dye mixtures comprising a polycyclic dye of Formula (1) and a different polycyclic dye or an azo dye show improved build-up on polyester material.

Abstract: 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; andR.sup.3, R.sup.4, R.sup.5 & R.sup.6 are each independently selected from -H, C.sub.1-6 -alkyl, halogen and C.sub.1-6 --alkoxy,in which each R independently is --H, C.sub.1-6 -alkyl or phenyl and in which each R.sup.7 independently is --H, C.sub.1-6 -alkyl, --C.sub.1-6 -alkyl-C.sub.

Abstract: 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 whereinY is an optionally substituted aromatic or heteroaromatic radical;Ring A is unsubstituted or is substituted by from one to five groups;Z is --NR.sup.1 R.sup.2 ;R.sup.1 and R.sup.2 are each independently H or are independently selected from optionally substituted alkyl, alkenyl, cycloalkyl, aralkyl, aryl and heteroaryl; orR.sup.1 and R.sup.2 together with the nitrogen atom to which they are attached form a heterocyclic ring; orR.sup.1 and R.sup.2 each independently together with the nitrogen to which they are attached and the adjacent carbon atom of Ring B form a heterocyclic ring; andX.sup.1 and X.sup.

Abstract: A phthalocyanine compound of the Formula (1): ##STR1## wherein: Pc is a phthalocyanine nucleus which is metal free or contains a metal or oxymetal;X is S; NT or O;Y is S; NT or O;Z is S or Se; in which T in the above is H; alkyl or aryl;.sup.+ HA is an aliphatic polyamino ammonium ion or a substituted diguanidinium ion;each R independently is an aromatic radical linked to a peripheral carbon atom of the Pc nucleus through an atom Z;each R.sup.1 independently is optionally substituted phenylene or naphthylene in which the atoms X and Y are attached to adjacent nuclear carbon atoms in R.sup.1 and to adjacent peripheral carbon atoms of the Pc nucleus;a is 0 to 16; provided thatb is 0 to 8; a+b>0; andc+d is 1 to 16.

Abstract: A charge generating compound for use in electrophotographic devices of the formula: ##STR1## wherein: A and A.sup.1 are each independently selected from phenyl, substituted phenyl, quinolino, naphthyl and substituted naphthyl wherein the substituents are independently selected from halo, alkyl, alkoxy, alkylthio, phenyl, phenoxy, phenylthio, CF.sub.3, CH.sub.2 OH, CO.sub.2 R.sup.1, NHCOR.sup.1, COR.sup.1, NO.sub.2 and NR.sup.1 R.sup.2 ;R.sup.1 and R.sup.2 are each independently H or C.sub.1-6 -alkyl.