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Reactive dye compounds

A technology of reactive dyes and compounds, applied in the direction of reactive dyes, organic dyes, azo dyes, etc., can solve the problem of remaining large dyes, achieve strong dyeing effect, large color intensity, and increase efficiency

Inactive Publication Date: 2001-07-11
THE UNIV OF NORTH CAROLINA AT CHAPEL HILL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, an urgent problem still faced by the fabric dye industry at present is that a large amount of dye remains in the wastewater after the dyeing process is completed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Embodiment 1

[0087] EXAMPLES Example 1 Using Procion (RTM) dyes as a starting material to synthesize a thioacetoxy-nicotinyl triazine dye

[0088] Monothioacetoxy-nicotinyl triazine dyes were prepared using the synthetic route as described in Scheme 1.

[0089] The synthetic method consists of two parts, namely the first part for the preparation of monochloromonothioacetoxytriazine and the second part for the preparation of monothioacetoxymonicotinyl triazine as shown in the reaction mechanism below.

[0090] In the reaction scheme, D is the chromophore and varies according to the starting dye used. In this example, various Procion (RTM) dyes commercially available from BASF were used as starting materials, in particular Procion Red MX-8B, Procion Yellow MX-8G and Procion Blue MX-2G. Synthesis of monochloro-thioacetoxytriazine dyes

[0091] The first part of the synthesis is to obtain the monochloro-monothioacetoxytriazine. A dye solution (0.1 mol / 100 ml, pH 7.5) of ...

Embodiment 2

[0095] The synthesis of embodiment 2-thioacetate group-isonicotinic acid base triazine dyestuff

[0096] Monothioacetoxy-isonicotinyl triazine was prepared using the synthetic route described in Scheme 2

[0097] In the reaction scheme, D is the chromophore and varies according to the starting dye used. In this example, Procion (RTM) Red MX-8B was used as starting material. Procion (RTM) Red MX-8B in this example can be replaced by other dichlorotriazine dyes such as Procion Yellow MX-8G or Procion Blue MX-2G.

[0098] The synthesis method consists of two parts, that is, the first part for preparing monochloro-thioacetoxytriazine dye and the second part for preparing monothioacetoxy-isonicotinyl triazine dye. Synthesis of monochloro-thioacetoxytriazine dyes

[0099]The preparation of the monochloromonothioacetoxytriazine dye was carried out in the same manner as described in Example 1 above and using the same Procion starting dye as described in Example 1 above. Synthesi...

Embodiment 3

[0101] The synthesis of embodiment 3-thioacetoxy group-(diazabicyclooctane) triazine dye

[0102] Monothioacetoxy-(diazabicyclooctane)triazine dyes were prepared using the synthetic route described in Scheme 3.

[0103] In the scheme, D is the chromophore and varies according to the starting dye used. In this example, Procion (RTM) Red MX-8B was used as starting material.

[0104] The synthesis method consists of two parts, the first part for preparing monochloro-thioacetoxy triazine dye and the second part for preparing monothioacetoxy-DABCO triazine dye. Preparation of monofluorothioacetoxytriazine was carried out in the same manner as in Example 1 above.

[0105] In the second part of the synthesis, the monochloromonothioacetoxytriazine dye synthesized in the first part was reacted with diazabicyclooctane (DABCO). 0.01 mol of monochloromonothioacetoxytriazine dye was added to the flask together with 0.03 mol of DABCO in distilled water. The temperature of the resultin...

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Abstract

A reactive dye compound comprising: (a) at least one chromophore moiety, (b) at least one nitrogen-containing heterocycle, (c) a linking group to link each chromophore moiety to each nitrogen-containing heterocycle; characterised in that at least one nitrogen-containing heterocycle is substituted with at least one thio-derivative and at least one quaternized nitrogen derivative. The reactive dye compounds of the invention high Exhaustion Values, high Fixation Values, particularly on cellulosic substrates such as cotton, and show significant improvements in terms of reducing spent dyestuff in effluent, increasing dye affinity to the substrate, increasing the dye-substrate covalent bonding, increasing the ability to dye substrates at room temperature, decreasing the amount of dye that is removed during the post dyeing ''soaping off process'' and therefore simplying the post dyeing ''soaping off process'' traditionally associated with dyeing cotton with fibre reactive dyes and reduction of staining of adjacent white fabrics. In addition, the compounds prepared above provide more intense dyeings and require less levels of salt for dyeing cotton substrates.

Description

technical field [0001] This invention relates to reactive dye compounds. In particular, the present invention relates to reactive dye compounds having improved dyebath exhaustion (E) and improved dye-fibre covalent fixation (F). Background of the invention [0002] Reactive dye compounds are known in the art to be useful for dyeing a variety of substrates. Such matrices include, for example, proteinaceous materials such as keratin, which are found, for example, in hair, skin and nails and various animal body parts such as cutin, hooves and feathers, and other naturally occurring proteinaceous substances such as silk and carbohydrate-derived substances such as Those derived from cellulose and cellulose derivatives, such as natural products such as cotton, and synthetic fibers such as polyamides. [0003] Examples of such reactive dyes known in the art include mono- or dichloro- or fluoro-1,3,5-triazinyl, mono- or dichloro- or fluoro-pyrimidinyl, β-halo-propionyl, β-halo-pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/00A61K8/49A61Q5/10C09B62/02C09B62/44C09B62/503D06P1/382D06P3/10
CPCC09B62/02C09B62/4401
Inventor 厄尔·D·布罗克戴维·M·刘易斯塔尔·I·尤萨夫
Owner THE UNIV OF NORTH CAROLINA AT CHAPEL HILL
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