Method for synthesizing dye-doped organic-inorganic composite latex through double in-situ emulsion copolymerization

An inorganic composite, dual in situ technology, applied in dyeing, organic dyes, textiles and papermaking, etc., can solve the problems of light fastness, poor weather fastness, cumbersome and other problems, achieve high light fastness, uniform distribution, and simple preparation method. Effect

Active Publication Date: 2022-03-11
ZHEJIANG SCI-TECH UNIV
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Problems solved by technology

[0009] Aiming at the problems that traditional pigments are easy to aggregate and the polymerization process is cumbersome, the present invention proposes a method of synthesizing dye-doped organic-inorganic composite latex through double in-situ emulsion copolymerization to obtain colored organic-inorganic composite rubber particles without particle post-treatment process , the process is simple, the stability of the composite pigment latex is improved, and the problem of poor light and weather fastness of printed fabrics is solved at the same time

Method used

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  • Method for synthesizing dye-doped organic-inorganic composite latex through double in-situ emulsion copolymerization
  • Method for synthesizing dye-doped organic-inorganic composite latex through double in-situ emulsion copolymerization
  • Method for synthesizing dye-doped organic-inorganic composite latex through double in-situ emulsion copolymerization

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Embodiment

[0045] According to the feeding ratio and conditions shown in Table 1 and Table 2, the double in-situ emulsion was prepared by one-step copolymerization to form dye-doped organic-inorganic composite latex. The steps are as follows:

[0046] In 30g of chloroform solvent, add 0.18g of disperse red 3B, 0.36g of 3-3-isocyanatopropyltrimethoxysilane and 2 drops of dibutyltin dilaurate, and react at room temperature for 22h at 25°C to obtain silane-modified Disperse Red 3B, the structure of silane-modified Disperse Red 3B is as follows:

[0047]

[0048] Such as Figure 4 As shown, according to the feeding ratio and ultrasonic conditions shown in Table 1 and Table 2, silane-modified dyes, tetraethyl orthosilicate (TEOS), 3-(trimethoxysiloxane) propane were added to the long-necked flask respectively. Base-2-methyl-2-acrylate (MPS), styrene (St), butyl acrylate (BA), azobisisobutylcyanide (AIBN), n-hexadecane (HD), n-octane and n-hexanol, to completely dissolve the silane-modifi...

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Abstract

The invention discloses a method for synthesizing dye-doped organic-inorganic composite latex through double in-situ emulsion copolymerization, and relates to the technical field of fine chemical engineering. The preparation method comprises the following steps: reacting a reactive dye with a silane coupling agent to prepare a silane modified dye, carrying out ultrasonic shearing to obtain a series of size-controllable multiple emulsion of monomer droplets of an organic monomer / vinyl monomer / inorganic precursor / silane modified dye, and finally, carrying out double in-situ emulsion polymerization to generate an organic-inorganic two-phase substance in the monomer droplets. Wherein the dye is doped on a two-phase interface to obtain the dye-doped composite latex. The prepared dye-doped composite latex has the characteristics of high dispersion stability, high dye doping efficiency and the like, and is suitable for printing of various fabrics, and the prepared printed fabrics have better color depth and color fastness.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a method for synthesizing dye-doped organic-inorganic composite latex by double in-situ emulsion copolymerization. Background technique [0002] At present, textile coloring technology is mainly divided into two categories, dye dyeing technology and paint coloring technology. However, the traditional dyeing technology consumes a lot of water resources and energy in the processes of padding, steaming, washing and drying, and produces a lot of waste water, which does not meet the requirements of sustainable environmental development. Pigment coloring technology avoids the problems of dye migration and light and heat discoloration, and has no selectivity for fibers. It is used for dyeing and printing of various fibers, and the process is short, saving energy and water. [0003] However, the pigments used in paint coloring technology are insoluble in water and dispersed in wa...

Claims

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Application Information

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IPC IPC(8): C08F230/08C08F212/08C08F220/18C08F2/44D06P1/16D06P1/52D06P1/673C09B69/10
CPCC08F230/085C08F212/08C08F220/1804C08F2/44D06P1/16D06P1/525D06P1/67383C09B69/101
Inventor 李家炜陆霖戚栋明谢子文汪芬萍
Owner ZHEJIANG SCI-TECH UNIV
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