Method for preparing micro-surface free radical polymerization superfine clad organic pigment

A technology of organic pigments and free radicals, applied in the direction of organic dyes, etc., can solve the problems of low surface polarity, coloring strength, hiding power, transparency, and difficult to disperse, and achieve improved rubbing fastness, bright colors, fastness good effect

Inactive Publication Date: 2010-10-20
沂水恒泰纺园有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the fact that organic pigments are agglomerated with each other in the process of synthesis, drying, etc. to form aggregates, and there are no hydrophilic groups in the molecular structure, the surface polarity is low, and it is difficult to disperse in the water phase, resulting in its application properties, such as coloring Strength, hiding power, transparency, etc. are all severely affected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015] Take 15g of phthalocyanine blue (15:3), 3g of polymerizable dispersant sodium allyloxy hydroxypropyl sulfonate, 0.6g of non-ionic emulsifier Tween80 and 110g of deionized water, stir and disperse for 10 minutes and place in a grinder for dispersion In 3 hours, the superfine phthalocyanine blue water-based dispersion system was prepared, then 3 g of methyl methacrylate was added thereto, dispersed and emulsified for 10 minutes, then placed in a reaction vessel equipped with a stirrer, a thermometer, and a condenser, and passed into The nitrogen gas was heated to 70°C, and 20 g of deionized aqueous solution with an initiator concentration of 0.5% was added dropwise. After stirring and reacting for 3 hours, the temperature was lowered and the material was discharged, and the pH value was adjusted to 8.5 to obtain an ultrafine polymer-coated phthalocyanine blue water-based dispersion. Its physical properties were tested as follows: surface tension σ=23.2mN / m, viscosity η=6.2...

example 2

[0017] Take 20g of Pigment Yellow (C.I. Pigment Yellow 74), 6g of polymerizable dispersant active agent hydroxypropyl sulfonate methacrylate, 1.5g of non-ionic emulsifier Pingping O-10 and 120g of deionized water, stir and disperse for 10 minutes and place Disperse in a grinder for 2 hours to obtain an ultrafine pigment yellow water-based dispersion, then add 2.4 g of styrene and 3.6 g of acrylic acid to it, disperse and emulsify for 20 minutes, and then place it in a reaction vessel equipped with a stirrer, a thermometer, and a condenser , the temperature was raised to 75° C. by nitrogen gas, 15 g of deionized aqueous solution with an initiator concentration of 1% was added dropwise, the temperature was lowered and the material was discharged after stirring for 4 hours, and the pH value was adjusted to 8 to obtain an ultrafine polymer-coated pigment yellow water-based dispersion. Its physical properties were tested as follows: surface tension σ=17.2mN / m, viscosity η=8.65cP, Z-...

example 3

[0019] Take 12g of C.I. Pigment Red 53, 4.5g of polymerizable dispersant R303, 0.8g of non-ionic emulsifier OP-10 and 125g of deionized water, stir and disperse for 10 minutes, then disperse in a grinder for 0.5 hours to obtain superfine pigment red water base dispersion, then add 1.2g of methyl methacrylate and 2.4g of lauryl acrylate to it, emulsify and disperse for 20 minutes, then place it in a reaction vessel equipped with a stirrer, thermometer, and condenser, and feed nitrogen to raise the temperature for 80 ℃, drop 30 g of deionized aqueous solution with an initiator concentration of 0.15%, stir and react for 3 hours, then cool down and discharge, adjust the pH value to 8.2 with sodium hydroxide, and obtain an ultrafine polymer-coated pigment red water-based dispersion. The physical property indexes are as follows: surface tension σ=19.43mN / m, viscosity η=9.82cP, Z-average particle size d=134.7nm.

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Abstract

The invention relates to a micro-surface free radical polymerization superfine clad organic pigment and a preparation method, and belongs to the field of fine chemical engineering. The method for preparing the superfine polymer clad organic pigment comprises the following steps of: preparing superfine organic pigment dispersoid from a pigment, a polymerizable dispersant, a nonionic surfactant and deionized water; adding a comonomer into the dispersoid after grinding and dispersing and transferring the mixture to a reaction vessel; and raising the temperature to initiate polymerization reaction. The superfine polymer clad organic pigment dispersoid prepared by the method has high dispersibility, storage property, heat resistance, acid and alkali resistance and stability.

Description

technical field [0001] The invention belongs to the field of fine chemical industry, and in particular relates to a preparation method of micro-surface radical polymerization ultrafine coated organic pigments. technical background [0002] Organic pigments have the advantages of strong tinting power, bright color, and complete color spectrum. They are widely used in industrial fields such as textiles, papermaking, inks, and coatings. They are important colorants for materials such as fibers, rubber, and plastics. However, due to the fact that organic pigments are agglomerated with each other in the process of synthesis, drying, etc. to form aggregates, and there are no hydrophilic groups in the molecular structure, the surface polarity is low, and it is difficult to disperse in the water phase, resulting in its application properties, such as coloring Strength, hiding power, transparency, etc. are all severely affected. Therefore, before practical application, organic pigme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B67/20C09B67/08
Inventor 付少海张明俊汤继忠田安丽王潮霞
Owner 沂水恒泰纺园有限公司
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