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Process for purifying reactive dye for ink jet printing and reactive dye ink

A reactive dye and inkjet printing technology, applied in organic dyes, inks, applications, etc., can solve the problems of low divalent salt removal efficiency, high energy consumption, and poor removal effect, and achieve a simple and feasible purification process with low production costs Low, high separation quality and high efficiency

Inactive Publication Date: 2015-04-01
HONGSAM DIGITAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that compared with traditional purification processes such as centrifugal separation, vacuum concentration, multi-effect thin film evaporation, and freeze concentration, the use of nanofiltration technology to purify dyes is much more efficient. However, in the desalination process, although nanofiltration technology is used for metals The removal efficiency of ions and monovalent salts is high, but its removal efficiency for divalent salts such as sulfate ions is low, the removal effect is poor and the energy consumption is high

Method used

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  • Process for purifying reactive dye for ink jet printing and reactive dye ink
  • Process for purifying reactive dye for ink jet printing and reactive dye ink
  • Process for purifying reactive dye for ink jet printing and reactive dye ink

Examples

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Comparison scheme
Effect test

Embodiment 1

[0036] The purification preparation of embodiment 1 reactive red C.I.24 (K-2BP)

[0037] The purification preparation process of the reactive red C.I.24 (K-2BP) comprises:

[0038] 1) Reactive Red C.I.24 and deionized water are mixed into an aqueous solution with a concentration of 45g / l, and then the barium chloride aqueous solution with a concentration of 0.1% of the total barium chloride solution dosage is 0.053mol / l is added while stirring to reduce the reaction The relative saturation of the liquid, after stirring for 5 minutes, add BaSO 4 Theoretical precipitation 1% BaSO 4 As a seed crystal and continued to stir for 5 minutes, then the remaining barium chloride aqueous solution was added dropwise at a constant speed within 15 minutes, and the reaction was stirred for 2 hours, so that the BaCl 2 Fully react with the sulfate ion in the reactive red C.I.24 crude dye solution and produce precipitation;

[0039] 2) After the reactive red C.I.24 crude dye solution after th...

Embodiment 2

[0048] The purification preparation of embodiment 2 reactive red C.I.279 (FN-4B)

[0049] The purification preparation process of described active red FN-4B comprises:

[0050] 1) active red FN-4B and deionized water are mixed into the aqueous solution that concentration is 70g / l, then add the barium chloride solution that the concentration of total barium chloride solution consumption 0.1% is 0.106mol / while stirring to reduce reaction The relative saturation of the liquid, after stirring for 5 minutes, add BaSO 4 1% BaSO of theoretical precipitation 4 As a seed crystal and continued to stir for 10 minutes, then the remaining barium chloride solution was added dropwise at a constant speed within 15 minutes, and stirred for 4 hours to make the BaCl 2 Fully react with the sulfate ion in the reactive red FN-4B crude dye solution and produce precipitation;

[0051] 2) After the reactive red FN-4B crude dye solution after the precipitation reaction in step 1) was left to stand ...

Embodiment 3

[0061] A kind of reactive red digital inkjet printing dye ink, its weight percentage is composed of: the reactive red dye that makes in the embodiment 1: 30%, polyethylene glycol 200: 8%, glycerol: 8%, 1,5-pentane Diol: 2%, Ethanol: 3%, N-Methylpyrrolidone: 2%, GXL fungicide: 0.2%, Triethanolamine: 0.5%, (U.S. Air Chemicals): 0.2%, Bayer, Germany 0.3%, deionized water: the remaining amount, the above-mentioned components are mixed and stirred at room temperature, and then filtered through 0.65 μm and 0.22 μm filter membranes to obtain the reactive red dye ink. In this embodiment, the polyethylene glycol 200, glycerin, 1,5-pentanediol, and ethanol are all used as moisturizers, Used as a surfactant, CX-100 as a dispersant, and triethanolamine as a pH regulator.

[0062] Table 3 shows the performance test results of the ink prepared in Example 3, wherein: the printing fluency test process is: on the printer based on the Epson piezoelectric nozzle, continuously print the prep...

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Abstract

The invention discloses a process for purifying reactive dye for ink jet printing. The process comprises the following steps: (1) precipitation reaction, namely preparing a crude dye aqueous solution by using the reactive dye and deionized water, then mixing to react by adding barium chloride in the crude dye solution under the condition of mixing to enable barium chloride and sulfate ions in the crude dye solution to fully react and produce precipitates; (2) centrifugal treatment, namely performing the centrifugal treatment of the reactive dye solution after the precipitation reaction of step (1); (3) desalting concentration treatment, namely performing desalting concentration treatment of the reactive dye solution through a nanofiltration membrane; (4) drying, namely drying the reactive dye solution after desalting concentration treatment to obtain high-purity reactive dye. The invention also discloses a reactive dye ink made of the reactive dye obtained by purification according to the purification process. The sulfate ions are effectively removed through the precipitation reaction and nanofiltration, the process is simple and feasible, the production cost is low, and the separation quality and the efficiency are high.

Description

technical field [0001] The invention relates to a process for purifying reactive dyes for inkjet printing and a reactive dye ink containing the reactive dyes. Background technique [0002] With the development of membrane separation technology, its market prospect is broad, and its application in dye purification has become increasingly widespread in recent years. For example, Ismail et al. used DS-DK nanofiltration membrane to treat dye wastewater. The retention rate of dye can be higher than 99%, but the formation of gel layer will be accelerated when the concentration of sodium chloride is low. Irena Petrinic et al. used NF-50 nanofiltration membrane to desalt and separate several crude dye solutions. The results showed that the rejection rate of the four dyes was 99.4-99.9%, and the permeability of the membrane to inorganic salt was 27-40%. Sha Wenbo and others screened DK membrane, DL membrane and NF membrane, and the results proved that DK membrane has the best effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/54C09B67/24C09D11/328D06P1/38D06P5/30
Inventor 陈普王齐振王小鹏孙志国秦国胜
Owner HONGSAM DIGITAL SCI & TECH
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