Abstract: A compound, 3-phenyl-7-[4-(tetrahydrofurfuryloxy)phenyl]-1,5-dioxa-s-indacene-2,6-dione, which has a structure of crystals exhibiting the strongest peak at an angle of diffraction, 2&thgr;, of 4.7°, among peaks appearing within the range of not smaller than 3° of 2&thgr;, in an X-ray diffraction using a Cu-K&agr;-ray. The compound gives dyed or printed products having deep and brilliant tint of colors with excellent fastnesses, when applied to hydrophobic fiber materials, particularly, polyester fiber materials.

Abstract: An asymmetric dioxazine compound represented by the following formula (I): ##STR1## wherein T.sub.1 and T.sub.2 represents hydrogen, alkyl, etc.;A.sub.1 represents alkyl, etc.;A.sub.2 represents hydrogen, alkyl, etc.;R represents hydrogen, alkyl, etc.; andZ represents a pyrimidine-based or quinoxaline-based fiber reactive group, or a triazine-based fiber reactive group and the triazine-based fiber reactive group may have halogen and/or --SO.sub.2 --CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.2 Z.sub.2 ' (Z.sub.2 ' represents a group which is released by the action of an alkali).

Abstract: A heterocyclic compound of the formula, ##STR1## wherein A and B are each hydrogen, halogen, alkyl or alkoxy, R.sup.1 is alkylene having upto 6 carbon atoms, X is direct linkage or divalent group such as --O--, --S--and the like, T and U are each hydrogen or alkyl, l is 0 or 1 to 3, Q is 5-, 6- or 7- membered saturated or unsaturated heterocyclic residue, and Y is hydrogen, halogen, alkyl, alkoxy or ##STR2## and B are taken together with each other to form methylene-dioxy, which is useful for dyeing or printing hydrophobic fiber materials with superior dyeability to give a dyed or printed product of a red color excellent in fastness properties, particularly those such as washing fastness.

Abstract: A benzodifuranone compounds of the formula, ##STR1## wherein R.sup.1 and R.sup.2 are each independently a naphthyl group or an unsubstituted or substituted phenyl group, which is useful for dyeing or printing hydrophobic fiber materials, is prepared in high purity and high yield by allowing benzofuran compounds of the formula, ##STR2## wherein R.sup.1 is as defined above, to react with acetonitrile compounds of the formula, ##STR3## wherein R.sup.2 is as defined above, and then carrying out an oxidation reaction to give the benzodifuranone compound.

Abstract: A heterocyclic compound which is useful for dyeing or printing hydrophobic fiber materials and which has the following formula (I), ##STR1##wherein A.sub.1, A.sub.2, A.sub.3 and A.sub.4 are each hydrogen, halogen, alkyl, alkoxy or alkenyl, X.sub.1 is --O-- or the like, R.sub.1 is a methylene or the like, X.sub.2 is a direct linkage or a divalent group of --O--, --S--, --SO--, --SO.sub.2 --, ##STR2## in which R.sub.3 is a hydrogen atom or a C.sub.1-4 alkyl group, ##STR3## in which R.sub.3 is as defined above, T and u are each independently hydrogen or a C.sub.1-4 alkyl, l is O or an integer of 1 to 3, Q is an unsubstituted or substituted 5-, 6- or 7-membered saturated or unsaturated heterocyclic residue, Y is hydrogen, C.sub.1-4 alkyl, a C.sub.1-4 alkoxy group or the like.

Abstract: A monoazo compound of the formula, ##STR1## wherein D is a heterocyclic or carbocyclic compound residue such as benzothiazolyl and phenyl, X is hydrogen, alkyl, alkoxy, halogeno, acylamino or the like, Y is hydrogen, halogeno, alkyl, alkoxy and the like, R.sub.1 is alkyl, R.sub.2 is C.sub.2 -C.sub.4 alkylene, B is a bridging group such as ##STR2## --O--, --S--, C.sub.1 -C.sub.6 alkylene and the like, and W.sub.1, W.sub.2, W.sub.3, Z.sub.1, Z.sub.2 and Z.sub.3 are independently hydrogen, alkyl, halogeno or the like, which is useful for dyeing hydrophobic fiber materials to give dyed or printed product of a deep color excellent in fastness properties, particularly those such as washing fastness, even after various finishing treatments of the product.

Abstract: A disperse dye composition comprising (a) a pyridone monoazo compound of the formula (I), ##STR1## wherein X.sup.1 and X.sup.2 are each hydrogen, halogen, alkyl, alkoxy or others, and R.sup.1 is alkyl, alkenyl, cycloalkyl, phenyl or anilino, and (b) a pyridone monoazo compound of the formula (II). ##STR2## wherein X.sup.3 and X.sup.4 are each hydrogen, halogen, alkyl, alkoxy or others, and R.sup.2 is alkyl, alkenyl, cycloalkyl, phenyl or anilino, optionally together with (c) a quinophthalone compound of the formula (III), ##STR3## wherein Y is hydrogen or bromine, and the ring A is unsubstituted or substituted benzene or naphthalene ring, which is useful as a yellow dye component for dyeing or printing hydrophobic fiber materials with superior dye bath stability and level dyeing property.