Synthetic fiber dyeing dispersion dye microcapsule and preparation method thereof

A technology of disperse dyes and synthetic fibers, which is applied in the direction of microcapsule preparation, dyeing method, microsphere preparation, etc. It can solve the problems of increasing the difficulty of wastewater treatment and organic acid residue, achieve good isolation effect, improve utilization rate, and reduce processing difficulty Effect

Active Publication Date: 2018-07-20
河北三利毛纺有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Patent CN 107523094A discloses a disperse dye microcapsule and its preparation method. The prepared disperse dye microcapsule can realize quantitative delivery, and the core coating rate reaches more than 80%, but the microcapsule needs to add polycarboxylic acid (citric acid, malic acid or tartaric acid) as a dispersant to increase the core coating rate, there is a problem of organic acid residues, which increases the difficulty of wastewater treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Wall material preparation: first mix 100g N-hydroxyethylacrylamide, 200g N-isopropylacrylamide, 8g cross-linking agent N,N′-methylenebisacrylamide and 10g emulsifier dodecyl Dissolve sodium sulfate in deionized water, keep stirring at 35-45°C for 0.5h under the protection of nitrogen, then raise the temperature to 70-80°C and keep stirring for 0.5h, add 10g of initiator ammonium persulfate, continue to heat at 70-80°C Keep stirring for 3 hours, then add 500g carboxymethyl-β-cyclodextrin and 5g 98% concentrated sulfuric acid, heat up to reflux state and keep stirring for 3 hours, the resulting mixture is concentrated under reduced pressure to make a paste, and the paste is naturally cooled to room temperature Send it into a freeze dryer, and dry the obtained solid to make a fine powder through a superfine pulverizer, that is, the wall material;

[0028] (2) Single-layer wall construction: Mix 100g disperse dye with 3000g deionized water, stir and disperse evenly, add...

Embodiment 2

[0031] (1) Wall material preparation: first mix 100g N-hydroxyethylacrylamide, 200g N-isopropylacrylamide, 8g cross-linking agent N,N′-methylenebisacrylamide and 10g emulsifier dodecyl Dissolve sodium sulfate in deionized water, keep stirring at 35-45°C for 0.5h under the protection of nitrogen, then raise the temperature to 70-80°C and keep stirring for 0.5h, add 10g of initiator ammonium persulfate, continue to heat at 70-80°C Keep stirring for 3 hours, then add 500g carboxymethyl-β-cyclodextrin and 5g 98% concentrated sulfuric acid, heat up to reflux state and keep stirring for 3 hours, the resulting mixture is concentrated under reduced pressure to make a paste, and the paste is naturally cooled to room temperature Send it into a freeze dryer, and dry the obtained solid to make a fine powder through a superfine pulverizer, that is, the wall material;

[0032] (2) Single-layer wall construction: Mix 100g disperse dye with 3000g deionized water, stir and disperse evenly, add...

Embodiment 3

[0046] Adopt embodiment 1-2, comparative example 1-3 to prepare disperse dye microcapsules respectively, wherein disperse dye all adopts the C.I. disperse blue 56 that same manufacturer produces, and test the relevant performance index of prepared disperse dye microcapsule, test result is as table 1.

[0047] The performance index test result of the prepared disperse dye microcapsules of the present invention of table 1

[0048] group

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Abstract

The invention discloses a synthetic fiber dyeing dispersion dye microcapsule and a preparation method thereof and relates to the technical field of microcapsules. The microcapsule comprises a dispersion dye, a wall material and a dispersant, wherein the wall material is prepared from N-hydroxyethyl acrylamide, N-isopropyl acrylamide and carboxymethyl-beta-cyclodextrin; the dispersant consists of PEG-60 hydrogenated castor oil and sodium polyaspartate. The microcapsule disclosed by the invention is solid in structure, good in mechanical strength and thermal resistance stability, no extra dyeingaid is needed when a synthetic fiber is dyed, and water washing is not needed after dyeing; wastewater generated after dyeing is low in treatment difficulty, the microcapsule in the wastewater can beremoved through standing and filtration, and the microcapsule can be also recycled.

Description

Technical field: [0001] The invention relates to the technical field of microcapsules, in particular to a disperse dye microcapsule for synthetic fiber dyeing and a preparation method thereof. Background technique: [0002] Disperse dyes are non-ionic dyes with strong hydrophobicity and low water solubility. Due to the extremely low solubility of disperse dyes in water, traditional disperse dyes are dyed with the help of a variety of auxiliary agents, such as compounds such as blooming agents and solubilizers, to disperse the disperse dyes in the dyeing medium water as uniformly as possible, and then Then dye the dyed object under appropriate temperature and pressure conditions. After dyeing, due to the presence of auxiliary agents, a considerable amount of dye remains in the dyeing wastewater, resulting in a large amount of COD, BOD and serious chroma pollution loads in the dyeing wastewater. Residual dyes are very finely dispersed and stable in wastewater, so it is diffi...

Claims

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Application Information

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IPC IPC(8): D06P1/16D06P1/52C08G81/02B01J13/14
CPCB01J13/14C08G81/024D06P1/16D06P1/5264
Inventor 江兵
Owner 河北三利毛纺有限公司
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