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Preparation method of dispersing dye microcapsule

A technology of disperse dyes and microcapsules, which is applied in the field of preparation of disperse dye microcapsules, can solve the problems of low temperature resistance, limited applicability of disperse dye microcapsules, and low strength of wall materials, and achieve low cost, concentrated particle size distribution, Good slow-release effect

Inactive Publication Date: 2005-08-31
SHANGHAI WOODGE TEXTILE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Beijing Institute of Textile Science improved the traditional gelatin-gum arabic by phase separation complex coacervation method to prepare disperse dye microcapsules, but the wall material strength of disperse dye microcapsules prepared by this method is not high and not resistant to high temperature , so that the applicability of the disperse dye microcapsules is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] Example 1: 1 gram of pure Disperse Blue E-4R, 6 grams of emulsifier (copolymerized hydrolyzate of 8% maleic anhydride and styrene), 150 grams of distilled water, emulsified on a BME100L high-shear emulsifier at 9000 rpm for 10 minutes. Add 10% HAc to adjust the pH value to 4-6. Add 2.0g of melamine resin prepolymer dropwise under stirring condition, react at 50~55℃ for 1.5~2hr; after cooling down to room temperature, add 2.0g of melamine resin prepolymer dropwise under stirring condition, React at 65°C for 1 to 1.5 hours, add 2.0 grams of dispersant NNO 15 minutes before cooling down, and stir thoroughly. Cool down, add ammonia water to neutralize, filter and observe under a microscope, you can get disperse dye capsules of about 2um-14um. 35% are concentrated around 6-8um.

example 2

[0019] Example 2: 1 gram of pure Disperse Blue E-4R, 25 grams of emulsifier (copolymerized hydrolyzate of 8% maleic anhydride and styrene), and 150 grams of distilled water were emulsified on a BME100L high-shear emulsifier at 9000 rpm for 10 minutes. Add 10% HAc to adjust the pH value to 4-6. Add 2.0 grams of melamine resin prepolymer dropwise under stirring conditions, and react at 50-55°C for 1.5-2 hours; after cooling down to room temperature, add 2.0 grams of melamine resin prepolymers dropwise under stirring conditions, Reaction at ℃ for 1~1.5hr; add 1.0g of styrene monomer and initiator ammonium persulfate 0.2g dropwise under stirring condition, react at 70~75℃ for 1~1.5hr, add 2.0g of dispersant NNO 15min before cooling down , stir well. Cool down, add ammonia water to neutralize, filter and observe under a microscope, you can get disperse dye microcapsules of about 2um-14um. 52% are concentrated around 6-8um.

example 3

[0020] Example 3: Encapsulate the three disperse dyes of Disperse Red 3B, Disperse Yellow E-2G, and Disperse Blue E-4R respectively according to the implementation method of Example 1 or Example 2, mix the three encapsulated dyes and print them into transfer printing Paper and transfer printing on polyester fabric, you can observe the color points of various colors, which has a better visual effect.

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Abstract

The present invention provides a method for preparing disperse dye microcapsule by utilizing melamine resin performed polymer and ethylene monomer as monomer for forming microcapsule well material and adopting in-situ polymerization. The wall material has good slowly-releasing property, centralized grain size distribution (generally, the grain size is 2-14 micrometer), small dose of adjuvant. It can control release of dye, can be used for dyeing and multiple transfer printing of polyester fabrics, and can raise utilization rate of dye and reduce pollution.

Description

Technical field: [0001] The invention belongs to the technical field of fine chemical industry. Specifically relates to a preparation method of disperse dye microcapsules. Background technique: [0002] In the industry, transfer printing is an environmentally friendly printing method because of its short process flow, simple equipment, and no need for washing or water as a processing medium. However, due to the various difficulties of the process, it has not been able to obtain due development so far, and the transfer printing share of fabrics is still very low, accounting for about 5% of printed products. This method is only suitable for thermoplastic fibers, and because the transfer paper can only be used once, not only the cost is high, but also a large amount of transferred paper and residual dyes will cause environmental pollution. [0003] Disperse dyes are non-ionic dyes with strong hydrophobicity and little water solubility. Due to the extremely low solubility of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/18C09B67/38
Inventor 罗艳陈水林王忠霞
Owner SHANGHAI WOODGE TEXTILE TECH
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