Non-aqueous solvent composition with temperature control separation performance for active dye

A technology of reactive dyes and non-aqueous solvents, applied in the field of textile dyeing and finishing, can solve the problems of rising water costs and other issues, and achieve the effects of saving energy consumption, reducing dyeing costs, and saving cycle time

CN104313920AInactive Publication Date: 2015-01-28GUANGDONG ESQUEL TEXTILES CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-01-28
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention provides a non-aqueous solvent composition with temperature control separation performance for active dye. The composition comprises good solvent of the active dye and poor solvent of active dye, wherein the volume ratio of the good solvent to the poor solvent is 1: (3-20); the good solvent of the active dye is the non-aqueous solvent capable of dissolving the active solvent and not having chemical reaction with the active dye; the poor solvent of the active dye is the non-aqueous solvent not capable of dissolving the active dye and not having chemical reaction with the active dye. The solvent system has advantages that after one dye period is ended, a purpose for separating the solvent can be achieved only by reducing the temperature of the solvent, the two solvents can be automatically separated after the temperature is lowered and can be recycled, and the mixture of the solvent does not need to be separated by adopting the energy-consuming and time-consuming distilling procedure, so that the cycling time is greatly reduced, the energy consumption is reduced, and the dyeing cost is remarkably reduced.
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Description

technical field

[0001] The invention relates to a non-aqueous solvent composition with temperature-controlled separation performance for reactive dye solvent dyeing, belonging to the technical field of textile dyeing and finishing. Background technique

[0002] At present, reactive dyes are mostly used in the dyeing of cotton fabrics. During the dyeing process, due to the hydrolysis of the active groups in the water medium, not only a large amount of reactive dyes are wasted, but also a large amount of water is consumed and a large amount of high-color dyes that are difficult to handle are discharged during the dyeing process. High-degree sewage, which is also an insurmountable bottleneck for reactive dyes.

[0003] In order to avoid the hydrolysis reaction of reactive dyes and improve the utilization rate of reactive dyes, scientists have paid attention to and studied the dyeing of reactive dyes in non-aqueous media very early. The advantage of dyeing with non-aqueous medi...

Examples

Embodiment 1

[0023] This embodiment provides a non-aqueous solvent composition with temperature-controlled separation performance for reactive dyes, which includes dimethyl sulfoxide and tetrachloroethylene, wherein the volume ratio of the two is 15:60.

[0024] Present embodiment also provides a kind of dyeing method of reactive dye, it comprises the following steps:

[0025] Mix the knitted fabric with an aqueous solution of sodium carbonate with a concentration of 20g / L for swelling, and control the liquid retention rate to 100%;

[0026] Put 2g of the pretreated knitted fabric into the dyeing cup, add 0.06g (3% o.m.f) of Avitera Red SE and 15mL of dimethyl sulfoxide, dye at 60°C, and adjust the heating rate to 1°C / min To 90°C, add a total of 60mL tetrachlorethylene in three batches during the heating process;

[0027] Incubate at 90°C for 1 hour, wring out the solvent from the cloth sample, and wash with water at room temperature to complete the dyeing.

[0028] Pour out the solvent,...

Embodiment 2

[0032] This embodiment provides a non-aqueous solvent composition with temperature-controlled separation performance for reactive dyes, which includes N,N-dimethylacetamide and n-hexane, wherein the volume ratio of the two is 15:75.

[0033] Present embodiment also provides a kind of dyeing method of reactive dye, it comprises the following steps:

[0034] Mix the knitted fabric with an aqueous solution of sodium carbonate with a concentration of 20g / L for swelling, and control the liquid retention rate to 100%;

[0035] Put 2g of the pretreated knitted fabric into the dyeing cup, add 0.06g (3% o.m.f) of Avitera Orange SE and 15mL of N,N-dimethylacetamide, dye at 60°C, and adjust the heating rate to 1 ℃ / min to raise the temperature to 90°C, and add 75mL of n-hexane in three batches during the heating process;

[0036] Incubate at 90°C for 1 hour, wring out the solvent from the cloth sample, and wash with water at room temperature to complete the dyeing.

[0037] Pour out the...

Embodiment 3

[0041] This embodiment provides a non-aqueous solvent composition with temperature-controlled separation performance for reactive dyes, which includes N,N-dimethylformamide and decamethylcyclopentasiloxane, wherein the volume of the two The ratio is 15:75.

[0042] Present embodiment also provides a kind of dyeing method of reactive dye, it comprises the following steps:

[0043] Mix the knitted fabric with an aqueous solution of sodium hydroxide with a concentration of 10g / L for swelling, and control the liquid retention rate to 100%;

[0044] Put 2g of the pretreated knitted fabric into the dyeing cup, add 0.06g (3% o.m.f) of Novacron Super Black G and 15mL of N,N-dimethylformamide, dye at 60°C, and adjust the heating rate to Raise the temperature to 95°C at 1°C / min, and add 75mL of n-hexane in three batches during the heating process;

[0045] Incubate at 90°C for 1 hour, wring out the solvent from the cloth sample, and wash with water at room temperature to complete the ...