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Waterborne high molecular ceramic pigment grinding aid dispersing agent as well as preparation method and application thereof

A technology of water-based polymers and ceramic pigments, applied in applications, household utensils, inks, etc., can solve the problems of late water-based polymer dispersants, less dispersant chain groups, and unserialized products, so as to improve grinding efficiency , reduced particle size, environmentally friendly effect

Inactive Publication Date: 2018-02-13
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country's research on water-based polymer dispersants started relatively late. In recent years, my country has also developed some varieties of water-based polymer dispersants, but the effect is not ideal, and the products have not been serialized.
There are few basic theoretical studies on the anchoring selection of dispersant chain groups, and there is still a big gap in product performance compared with similar foreign products

Method used

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  • Waterborne high molecular ceramic pigment grinding aid dispersing agent as well as preparation method and application thereof
  • Waterborne high molecular ceramic pigment grinding aid dispersing agent as well as preparation method and application thereof
  • Waterborne high molecular ceramic pigment grinding aid dispersing agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Add commercially available glycidyl methacrylate (4.95g) into 50ml of distilled water, and reflux for 9 hours at a temperature of 95°C to obtain a clear solution. Freeze-dry to obtain a white solid that is the monomer GB1.

[0042] Acrylic acid (4g; 2eq), itaconic acid (3.6g; 1eq) and monomer GB1 (0.4g; 0.1eq) were added to a 100ml round bottom flask, distilled water (17ml) was added to dissolve, and then The initiator ammonium persulfate aqueous solution (1.5 wt %; 120 mg) was gradually added dropwise over 25 minutes. After keeping at 85°C for two hours, a viscous liquid was obtained, which was immediately neutralized with a 10mol / L sodium hydroxide solution in an ice bath to obtain a water-based polymer ceramic pigment grinding aid dispersant S1 , The number average molecular weight is 10430.

Embodiment 2

[0044] Monomer GB1 was obtained according to the method in Example 1. Acrylic acid (4g; 2eq), itaconic acid (3.6g; 1eq) and monomer GB1 (0.8g; 0.2eq) were added to a 100ml two-necked round-bottomed flask, distilled water (18ml) was added to dissolve, and then The initiator ammonium persulfate aqueous solution (1.4wt%; 118 mg) was gradually added dropwise under the conditions, and the time used for the dropwise addition was 30 minutes. After keeping at 85°C for two hours, a viscous liquid was obtained, which was immediately neutralized with a 10mol / L sodium hydroxide solution in an ice bath to obtain a water-based polymer ceramic pigment grinding aid dispersant S2 , The number average molecular weight is 9508.

Embodiment 3

[0046] Monomer GB1 was obtained according to the method in Example 1. Methacrylic acid (3.3g; 2eq), itaconic acid (2.5g; 1eq) and GB1 (0.3g; 0.1eq) were added to a 100ml two-neck round-bottomed flask, distilled water (10ml) was added to dissolve, and then the The initiator ammonium persulfate aqueous solution (3wt%; 183mg) was gradually added dropwise under the condition of 25 minutes. After keeping at 78°C for one and a half hours, a viscous liquid was obtained, which was immediately neutralized with a 10mol / L sodium hydroxide solution in an ice bath to obtain a water-based polymer ceramic pigment grinding aid dispersant S3 , The number average molecular weight is 8560.

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Abstract

The invention discloses a waterborne high molecular ceramic pigment grinding aid dispersing agent as well as a preparation method and application thereof. According to the method, (methyl)acrylic acid, itaconic acid and monomer molecules (glycerol monomethyl acrylate or methacrylic acid D-pentadigalloylglucose amino ethyl ester) are dissolved into water to obtain a mixed solution; under the nitrogen gas protection condition, initiators are dripped into the mixed solution; after the dripping of the initiators is completed, constant temperature reaction is performed at 60 to 90 DEG C; after thereaction is completed, the temperature is lowered; then, the reaction liquid is regulated to the neutral state under the ice bath condition; the waterborne high molecular ceramic pigment grinding aiddispersing agent with the number-average molecular weight being 8000 to 15000 is obtained. The invention aims at providing the waterborne dispersing agent which can be used as the grinding aid for grinding and can also be used for well and stably dispersing particles.

Description

technical field [0001] The invention relates to the field of grinding-aid dispersants for ceramic pigments (such as praseodymium yellow, cobalt blue, cadmium-selenium red, etc.), in particular to a water-based polymer ceramic pigment grinding-aid dispersant and its preparation method and application. Background technique [0002] Ceramic inkjet printing is developing rapidly in today's ceramic industry, and the demand for ceramic ink is also increasing. At present, there are mainly defects in the preparation of ceramic inks, such as the grinding and dispersion of ceramic colorants are not good enough, so that the particle size of the colorant particles in the machine sprayed ink is uneven and the particle size distribution is wide, or the particles in the ink are stable after grinding. Sex isn't good enough either. These problems seriously affect the application of ceramic inks. [0003] Dispersant is a polymer compound with amphiphilicity, which can effectively reduce the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/30C08F220/06C08F222/02C08F220/32C08F220/36
CPCC09D11/30C08F220/06C08F222/02C08F220/325C08F220/36
Inventor 王燕民黄广华潘志东
Owner SOUTH CHINA UNIV OF TECH
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