Abstract: A tracer material for tracing fluid flows from a hydrocarbon reservoir. The tracer material is a particulate tracer material including a plurality of particles of a porous particulate solid material, the particles having pores containing a tracer composition characterised in that a retaining material overlies the tracer composition in at least some of the pores. The retaining material retards the release of the tracer material so that the tracer is released at a more constant rate over a longer period than in the absence of the retaining material.

Abstract: A tracer material for tracing fluid flows from a hydrocarbon reservoir. The tracer material is a particulate tracer material including a plurality of particles of a porous particulate solid material, the particles having pores containing a tracer composition characterised in that a retaining material overlies the tracer composition in at least some of the pores. The retaining material retards the release of the tracer material so that the tracer is released at a more constant rate over a longer period than in the absence of the retaining material.

Abstract: Dye mixtures comprising one or more dyes of the herein below indicated and defined formula (I), and at least one of the herein below indicated and defined general dye of: formula (II), or one or more dyes of formula (III) or one or more dyes of formula (IV), or one or more dyes of formula (V), or one or more dyes of formula (VI), wherein R1 to R21, P, Q, X, Y and Z are as defined in claim 1 , method for the preparation of the dye mixture and a process for coloring a synthetic textile material or fiber blend thereof.

Abstract: Dye mixtures comprising one or more dyes of the herein below indicated and defined formula (I), and at least one of the herein below indicated and defined general dye of: formula (II), or one or more dyes of formula (III) or one or more dyes of formula (IV), or one or more dyes of formula (V), or one or more dyes of formula (VI), wherein R1 to R21, P, Q, X, Y and Z are as defined in claim 1 , method for the preparation of the dye mixture and a process for colouring a synthetic textile material or fibre blend thereof.

Abstract: The present invention refers to a dye mixture comprising an azo dye of the formula (I) and one or more dyes of the general formula (II) wherein R1 and R2 are independently hydrogen, alkoxy [OR3] or substituted alkoxy [O(CH2)n R4], in which n can be 1 to 6 R3 is alkyl or alkenyl each of which can be optionally substituted by a unsubstituted or a substituted saturated or unsaturated 5–, 6–, or 7 -membered heterocyclic or homocyclic residue; R4 is a group of the formula (1) or (2) wherein R5 is hydrogen for n more than 1, alkyl for n more than 1, alkenyl, aryl, alkoxyalkyl, aryloxyalkyl, carbonylalkyl, carbonylalkenyl, carbonylaryl, carbonylalkoxyalkyl or carbonylaryloxyalkyl; R6 is alkoxy, alkenyloxy, aryloxy, arylalkoxy, aryloxyalkoxy, alkenyloxyalkyloxy or alkoxyalkoxy, a method for the preparation of such mixtures and a method for colouring a synthetic textile material or fibre blend thereof using such mixtures.

Abstract: The present invention refers to a dye mixture comprising an azo dye of the formula (I) 1

Abstract: The present invention refers to a dye mixture comprising an azo dye of the formula (I) wherein each of X and X1 independently is chlorine or bromine; R1 is absent or is C1-4 alkyl; and each of R2 and R3 independently is hydrogen, C1-6 alkyl or cyanoethyl; but when R1 is absent, R2 is n-butyl or cyanoethyl and R3 is cyanoethyl; and further dye components according to claim 1, a method for the preparation of such mixtures and a method for coloring a synthetic textile material or fiber blend thereof using such mixtures.

Abstract: A dye mixture comprises: a) at least one pyrroline type dye of formula (I) wherein R1 is H, C1-20alkyl or C2-20alkenyl; and D is aryl; and b) at least one anthraquinone type dye of formula (II), wherein RB is (CH2)nORB1; RB1 is C1-6alkyl or C1-6alkoxy-C1-6alkyl; n is 1-6; and ZB is O or NH.

Abstract: A dye mixture comprises (A) at least one monoazo dye of formula (I) wherein XA is Cl, Br, I, CN or NO2; RA is C1-4alkyl or NHCOQ, where Q is C1-4alkyl; and each of RA1 and RA2, independently, is C1-4alkyl, C2-4akenyl, C1-4alkoxy-C1-4alkyl, aryl-C1-4 alkyl or aryloxy-C1-4alkyl; and (B) at least one pyrroline type dye of formula (II) wherein RB1 is H, C1-20alkyl or C2-20alkenyl; and D is aryl.

Abstract: A dye mixture comprises (A) at least one dye of formula (I) wherein X is Cl, Br or I; Q is C1-4alkyl; and each of R1 and R2 independently, is C1-4alkyl or C1-4alkenyl; and (B) at least one dye of formula (II) wherein Q1 is C1-4alkyl; and each of R1 and R2 independently, is C1-4alkyl or C1-4alkenyl.

Abstract: The present invention refers to a dye mixture comprising an azo dye of the formula (I) 1

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 dye composition suitable for the coloration of synthetic textile materials, especially linear polyester, by conventional disperse dyeing and printing processes comprising a mixture of a dye of the formula: ##STR1## and a dye of the formula: ##STR2## wherein X and X' are each independently selected from Br, Cl and I;Q and Q' are independently C.sub.1-4 -alkyl;T is C.sub.1-4 -alkyl;R.sup.1 and R.sup.2 are each independently C.sub.1-4 -alkyl or C.sub.2-4 -alkenyl; andT.sup.1 and T.sup.2 are each independently C.sub.1-4 -alkyl or C.sub.2-4 -alkenyl.

Abstract: A disperse dye mixture comprising from 85 to 95% by weight of a dye of the formula: ##STR1## and from 15 to 5% by weight of a dye of the formula: ##STR2## wherein R represents --OH or --OCOR.sup.4 wherein R.sup.4 represents C.sub.1-4 -alkyl or C.sub.1-4 alkoxy;each of R.sup.1 and R.sup.2, independently, represents hydrogen, halogen, C.sub.1-4 -alkyl or C.sub.1-4 -alkoxy; andR.sup.3 represents hydrogen, halogen or nitro.

Abstract: A disperse monoazo dye of the formula: ##STR1## wherein each of R and R.sup.3 represents a lower alkyl radical, R.sup.1 represents a lower alkyl or C.sub.3 -C.sub.6 alkenyl radical andR.sup.2 represents a C.sub.2 -C.sub.6 alkyl radical carrying a hydroxy or acyloxy substituent.

Abstract: Water-soluble monoazo dyes for nylon having the formula: ##STR1## wherein ring A may optionally be substituted by halogen, trifluoromethyl, alkoxy, acylamino or alkyl having from 1 to 4 carbon atoms, R represents hydrogen or unbranched alkyl having from 1 to 4 carbon atoms, R.sup.1 represents hydrogen, alkyl or hydroxyalkyl, X represents unbranched alkyl having from 1 to 6 carbon atoms, cycloalkyl, halogen, nitro, trifluoromethyl, sulpho, vinylsulphonyl, hydroxyethylsulphonyl, sulphatoethylsulphonyl, --SO.sub.2 NHR.sup.2, wherein R.sup.2 represents hydrogen or alkyl having from 1 to 4 carbon atoms, or --COOR.sup.3 wherein R.sup.3 represents hydrogen, alkyl having from 1 to 7 carbon atoms, cycloalkyl or aryl, and n represents an integer of from 0 to 3.The dyes are suitable for application to polyamide textile materials. They give a high degree of thermal stability and fastness to wet treatments and to light.