Submicron-sized dispersed liquid preparing method

A manufacturing method and technology of dispersion liquid, applied in the directions of mixing method, chemical instrument and method, dissolution, etc., can solve the problems of blockage, inability to use the dispersion system, difficult to obtain, etc.

Inactive Publication Date: 2004-12-08
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to being difficult to obtain, small grinding media with appropriate characteristics will cause blockage during separation, and grinding media with a diameter of less than 0.1mm cannot be effectively isolated and confined in the grinding tank due to the separation gap or mesh screen. Therefore, it cannot be used in horizontal or vertical circulating dispersion systems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The preparation of embodiment 1 Cyan pigment dispersion

[0039] Composition Weight (g)

[0040] Ciba Irgalite Blue GLO 27

[0041] Milliken 8334 14.3

[0042] water 138.7

[0043] Total 180

[0044] 150~250μm crosslinked Polystyrene beads 289.5

[0045] The above ingredients were mixed and ground in a one liter stainless steel container with a cooling jacket, using a high speed stirring motor (IKA ULTRA-TURRAX T50) with a 5 cm cowles type grinding blade, Tip speed 7.85m / s. Grinding was carried out for 7.5 hours, and the temperature of the cooling water was maintained at 15°C. The dispersion was diluted with 50 g of water (11.75% pigment concentration) and stirred for 30 minutes, then the dispersion and the grinding medium were separated. The particle size is measured by Marlvern 4700 Dynamic Light Scattering, the average particle size is 21.8nm, and the median HLB value of this pigment differs by 1.0 from the Milliken 8334 HLB value.

Embodiment 2

[0046] The preparation of embodiment 2 Blue pigment dispersion liquid

[0047] Composition Weight (g)

[0048] Ciba Irgalite atlantic 870-CF 27

[0049] Sinpol 610 13.5

[0050] water 139.5

[0051] Total 180

[0052] 150~360μm crosslinked Polystyrene beads 259.4

[0053] The procedure is the same as in Example 1, Tip speed 4.32m / s, grinding for 6 hours, adding 50g of water to dilute, the average particle size is 25.7nm, the median HLB value of this pigment is 2.4 different from the Sinpol 610 HLB value.

Embodiment 3

[0054] The preparation of embodiment 3 Magenta pigment dispersion liquid

[0055] Composition Weight (g)

[0056] Sunfast PR122 36

[0057] Milloken 8216 18

[0058] water 126

[0059] Total 180

[0060] 150~250μm crosslinked Polystyrene beads 238.6

[0061] The procedure is the same as in Example 1, Tip speed 6.2m / s, grinding for 17 hours, adding 70g of water to dilute, the average particle size is 42.4nm, the median HLB value of this pigment is 1.5 different from the Milliken 8216 HLB value.

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Abstract

A process for preparing a superfine dispersed liquid includes such steps as dissolving a disperser in a liquid carrier, adding matrix, stirring, adding grinding medium, grinding until the diameter of matrix particle is 10-100 microns, and separating out grinding medium.

Description

technical field [0001] The invention relates to a method for producing an ultrafine dispersion liquid, especially a wet grinding micronization dispersion method suitable for the fields of colorants, organic compounds, metals or metal oxides, and pharmaceutical compounds. Background technique [0002] Micronization technology is a key technology for manufacturing in many industries. Among them, wet grinding method is a relatively economical process and can be applied to different materials. Wet grinding is a traditional micronization dispersion method, and its micronization technology and products have a wide range of industrial applications. For example, colorant dispersions are widely used in many fields such as paints, inks, pigments, and industrial dyeing. With the improvement of technology, the micronization method of wet grinding can disperse materials to the nanometer scale, such as using different designs of dispersion equipment, different types of dispersion aids, a...

Claims

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Application Information

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IPC IPC(8): B01F3/12
Inventor 简维谊徐敬添蔡书雅邹淑贞
Owner IND TECH RES INST
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