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Preparation process of dispersing dye microcapsule

A preparation process and technology of disperse dyes, which are applied in the field of preparation of disperse dye microcapsules, can solve the problems of low wall material strength, limited applicability, and high temperature resistance, and achieve the effects of good slow release, easy operation, and low cost

Inactive Publication Date: 2003-09-24
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wall material strength of this disperse dye microcapsule is not high, and it is not resistant to high temperature, so the applicability of this microcapsule is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Add the organic phase containing 9 g of dispersed deep blue S-3BG, 18 g of 4,4-diphenylmethane diisocyanate (MDI) to 300 mL of the aqueous phase containing 2% polyether 2040 and 1% protective colloid polyvinyl alcohol 1788 In the process, emulsify at 9000 rpm for 10 min on a BME100L high-shear emulsifier (Shanghai Weiyu Electromechanical Co., Ltd.). Add 25% NaOH to adjust the pH to 7-8. After reacting for 150 minutes, add a little n-butylamine and react for 30 minutes. After filtering and observing under a microscope, disperse dye microcapsules of about 2 μm-10 μm can be obtained, and about 50% of them are concentrated at about 4 μm.

Embodiment 2

[0031] The organic phase containing 0.8g of Disperse Blue 2BLN and 6.2g of liquefied MDI was added to 300mL of aqueous phase containing 2% polyether 2040 and 1% PVA, and emulsified on a BME100L high-shear emulsifier at 9000rpm for 10min. Add 25% NaOH aqueous solution to adjust the pH value to 7-8, emulsify for 10 minutes and add 1.6g of Disperse Yellow E-3RL and 12.4g of liquefied MDI which are stirred evenly. After reacting for 150 minutes, add a little n-butylamine and react for another 30 minutes. Green disperse dye microcapsules with a diameter of 4μm-8μm can be obtained.

Embodiment 3

[0033] Add the organic phase containing 3.5g of disperse blue 2BLN and 45.5g of liquefied MDI to the aqueous phase containing 28g of polyether 2040, 7g of polyvinyl alcohol and 665g of water and emulsify at 9000rpm for 20min, add 12mL of a 25% aqueous solution NaOH was used to adjust the pH value to 7-8, and after 150 minutes of reaction, a small amount of n-butylamine was added to react for 30 minutes. Disperse dye microcapsules of 3μm-15μm can be produced.

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Abstract

The present invention relates to a technological process for preparing disperse dye microcapsule by utilizing double or polyisocyanate compound as monomer for forming microcapsule wall material, using disperse dye as core material and adopting interfacial polymerization. The polyurea finalkly formed by using said process has no methyl aldehyde, has no pollution, high strength, good slowly-releasing property and small dose of adjuvant. It is specially suitable for high-temp. high-pressure dyeing, thermosol dyeing and multiple transfer printing of polyester fabrics.

Description

technical field [0001] The invention belongs to the field of fine chemical industry and light chemical industry. Specifically, it is a method of preparing disperse dye microcapsules by interfacial polymerization using di- or polyisocyanate compounds as monomers for forming microcapsule wall materials. This disperse dye microcapsule is especially suitable for high-temperature and high-pressure dyeing, hot-melt dyeing and multiple transfer printing of polyester fabrics. Background technique [0002] Disperse dyes are non-ionic dyes with strong hydrophobicity and little water solubility. It was first used for dyeing acetate fibers, but now it is mainly used for dyeing polyester fibers. Since polyester was dyed with disperse dyes in 1953, disperse dyes have developed rapidly, and currently there are more than 2,000 kinds. It is one of the fastest growing dye varieties in modern times. However, because disperse dyes require a large amount of surfactants such as dispersants, w...

Claims

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Application Information

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IPC IPC(8): B01J13/16C09B67/38
Inventor 陈水林李卓
Owner DONGHUA UNIV
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