Abstract: A method for dyeing polyester fiber materials is disclosed, comprising conducting combination dyeing by a combination of disperse dyes each capable of making up for the color fading of other disperse dye produced upon exposure to sunlight, by the color change thereof in hue caused upon the exposure to sunlight under the same condition.

Abstract: A reactive dye composition which comprises a combination of 20 to 99% by weight of a dye represented by a free acid of the formula, ##STR1## and 1 to 80% by weight of an alkylnaphthalenesulfonic acid/formaldehyde condensate having a sulfonation degree of 50 to 150% and an average condensation degree of 1.1 to 3.0, which is very readily soluble in water and aqueous alkali liquors, resistant to coagulation when prepared into a color paste for printing, and useful for dyeing or printing cellulose fiber materials yellow with a high color yield, particularly by a one-bath pad dyeing method or printing method.

Abstract: An aqueous liquid dye composition containing 5 to 35% by weight of a reactive dye, 0.05 to 30% by weight of a reduction inhibitor and water. This composition is stable to storage for a long period of time or storage at relatively high temperatures.

Abstract: A process for dyeing polyolefin fiber materials, which comprises contacting a polyolefin fiber material obtained by melt-spinning a mixture of crystalline polyolefin and 0.1 to 30% by weight based on the weight of the polyolefin of a copolymer of ethylene and an aminoalkyl acrylate compound represented by the formula, ##STR1## wherein R.sub.1 represents hydrogen atom or methyl group, R.sub.2 and R.sub.3 each represents hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and n represents an integer from 1 to 4, or a blend product of the said polyolefin fiber material and a polyamide fiber material, with a dye bath containing an anionic dye and at least one carboxylic acid selected from the group consisting of benzoic acid, salicylic acid, p-chlorobenzoic acid and 5-chlorosalicylic acid.

Abstract: A reactive dye composition containing a dye mixture comprising 60 to 97 wt. % of C.I. Reactive Orange 16 and 40 to 3 wt. % of C.I. Reactive Orange 7, and 5 to 100 parts by weight per 100 parts by weight of said dye mixture of a naphthalenesulfonic acid/formaldehyde condensate having a sulfonation degree of 100 to 200%, which is very readily soluble in water and an aqueous alkaline solution and useful for dyeing cellulose fibers with a high color yield.

Abstract: An aqueous liquid dye composition containing 10 to 50 parts by weight of C.I. Reactive Blue 19, 1 to 40 parts by weight of a condensation product of formaldehyde with naphthalenesulfonic acid which may be alkylated, 0.1 to 10 parts by weight of a nonionic surfactant having an HLB of 9 to 20, and 20 to 80 parts by weight of water. This liquid dye composition has a good storage stability, and shows a sufficient solubility in an aqueous alkali liquor so that it is particularly suitable for dyeing cellulosic fibers by a one-bath pad-batch method.

Abstract: A dye composition containing C.I. Reactive Blue 19 and an alkylnaphthalenesulfonic acid/formaldehyde condensate, which is very readily soluble in water and aqueous alkaline liquors and useful for dyeing natural and regenerated cellulose fibers with high color yield, particularly in accordance with a one-bath pad dyeing method.

Abstract: Leather can be protected from color bleeding and, at the same time, the surface gloss and smoothness of a leather can be controlled to any desired value by treating the leather, which has been colored with dyes or pigments, with a copolymer (I) comprising (B) an ethylenically unsaturated ester compound having 4 to 22 carbon atoms and (A) an ethylenically unsaturated hydrocarbon compound having 2 to 20 carbon atoms or a halogen-substituted derivative thereof and, if necessary, a third component which is a vinyl compound having a functional group; or with a mixture of 100 parts by weight of said copolymer (I) and 0.1 to 100 parts by weight of a polymer of copolymer (II) of an ethylenically unsaturated compound and/or 0.1 to 100 parts by weight of an inorganic powder (III).

Abstract: A process for dyeing acid-modified polyester fibers comprising contacting the fibers with a dye bath containing a thiazoleazo-type cationic dye of the formula (I), ##SPC1##wherein R.sub.1 and R.sub.2 each is a methyl group or an ethyl group; A and B each is a benzene nucleus which can be substituted with a methyl group, an ethyl group, a methoxy group or an ethoxy group; and X.sup.- is an anion. The cationic dye compounds of the formula (I) dye acid-modified polyester fibers a bright blue shade and with good light fastness.

Abstract: A compound of the formula (I): ##SPC1##whereinR.sub.1 is a C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.2 alkoxy- or cyano-substituted C.sub.1 -C.sub.4 alkyl,R.sub.2 is a C.sub.1 -C.sub.4 alkyl, phenyl, C.sub.1 -C.sub.2 alkoxy-substituted phenyl, C.sub.7 -C.sub.8 aralkyl or cyclophenyl,R.sub.3 is a C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy-substituted C.sub.1 -C.sub.2 alkyl or phenoxy-substituted C.sub.1 -C.sub.2 alkyl,X is hydrogen, a halogen or N,N--di--C.sub.1 -C.sub.4 alkylsulfonamide,Y is hydrogen, a C.sub.1 -C.sub.2 alkyl or a halogen,n is an integer of from 1 to 2, andZ.sup.- is an anion,Which is useful for dyeing acid modified polyacrylonitrile, polyester or polyamide fibers with a high fastness and an excellent vividness.

Abstract: A process to dye acid modified polyester fibers, such as Dacron T-64 fibers, a dischargeable black by dyeing the fibers with a mixture of six different basic dyes.

Abstract: Basic dyeable polyester fibers are dyed with a mixture of dyes, the first of which is a quaternized-2-methylene indoline coupled to a substituted aminobenzene to form a hydrazide dye, the second of which is a quaternized amino triazol azo coupled to substituted diaminobenzene. The third dye is a quaternized alkoxybenzothiazol azo coupled to a substituted Di-Aminobenzene. The fourth dye is a substituted diaminotriphenyl methane dye and the last dye is a Nitrobenzeneazo-substituted aminobenzene.

Abstract: A process for dyeing "acid-modified" polyester fibers, such as "Dacron T-64" fibers, a black color comprising contacting the polyester fibers with a dye bath containing a combination of four kinds of dyes.