Korea Research Institute of Chemical Technology

Sea Wha Oh

Tae Kyung Kim

Myeong Nyeo Kang

Seung Rim Shin

Mi Kyoung Song

Sun Il Kim

Jong Il Shin

Sung Nyung Yun

The present invention relates to a reactive orange dye containing vinyl sulfone and more particularly, to the dye which have 6(7)-alkoxycarbonylamino-4-hydroxy-2-naphthalenesulfonic acid as a chromophore and aminophenyl-&#x3b2;-ethylsulfone derivative as an azo coupler. This dye provides excellent fastness in terms of light, washing, perspiration and chlorine as well as better dyeing yield than other monofunctional reactive dye. In Formula (1), M is alkaline metal atom; Z is &#x2014;O&#x2014;SOM or OC(O)CH; R is alkyl group having 1&#x2013;4 of carbon atom; and a position of Cor Cis substituted with carbamate group.

Reactive orange dyes containing vinyl sulfones

The present invention relates to water insoluble disperse-reactive dyes expressed by the formula (3) and (4) and to their preparation, (3) (4) wherein each of Arand Arrepresents aryl or benzothiazole group, and each of R, R, R, and Rindependently represents hydrogen, alkyl, alkoxy, cyanoalkyl or aminoacetyl group.

Disperse-reactive dyes containing acetoxyethylsulfone or vinylsulfone and their process

The present invention relates to a reactive black dye composition for cellulose fiber and more particularly, to the reactive black dye composition with excellent several fastnesses, dyeing levelness, reproducibility and dyeing yield, comprising a mixture with a certain amount ratio of an orange reactive dye expressed in formula (1) and black dye expressed in formula (2), wherein Z is &mdash;OSO M or OC(O)CH ; and M is an alkaline metal atom.

Reactive black dye compositions for cellulose fibers

This invention relates to a reactive black dye containing acetoxyethyl sulfone compound and more particularly, to the reactive black dye containing acetoxyethyl sulfone compound of formula (1), which is characterized by lessening the loss of dyes in filtering process owing to the low solubility by introducing the aminophenyl-beta-acetoxyethyl sulfone moiety, saving the cost for waste water treatment by using a small amount of salt in salting-out process and furthermore obtaining bright color with high dyeing yield and good substantivity wherein M is an alkali metal atom, and wherein the compound of formula (1) is chosen from

Reactive black dyes containing acetoxyethyl sulfone moiety

The present invention relates to a bifunctional red reactive dye and more particularly, to the bifunctional red reactive dye with monochlorotriazine and acetoxyethylsulfone as reactive groups expressed by formula (I), wherein, M is alkaline metal atom, which provides excellent combination of properties in that 1) the introduction of aminophenyl-&bgr;-acetoxyethylsulfone group to the dye may minimize the loss of dye, since its low solubility to water lessens the amount of the remaining solution during filtration, 2) an easier salting-out process requires a smaller amount of salt during the process so that the costs for the treatment of waste water may be significantly reduced, and 3) a better dyeing yield with enhanced substantivity and better brightness in color

Reactive red dyes containing monochlorotriazine and acetoxyethyl sulfone groups

The present invention relates to a bifunctional blue reactive dye and more particularly, to the bifunctional blue reactive dye with monochlorotriazine and acetoxyethylsulfone as reactive groups expressed by formula (1), wherein, M is alkaline metal atom, and which provides excellent combination of properties in that 1) the introduction of aminophenyl-&bgr;-acetoxyethylsulfone group to the dye may minimize the loss of dye, since its low solubility to water lessens the amount of the remaining solution during filtration, 2) an easier salting-out process requires a smaller amount of salt during the process so that the costs for the treatment of waste water may be significantly reduced, and 3) a better dyeing yield with enhanced substantivity and better brightness in color.

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Daejeon, South Korea

Sea Wha Oh