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High molecular dispersant agent and its preparing method

A polymer dispersant, a certain amount of technology, used in chemical instruments and methods, coating, transportation and packaging, etc., can solve problems such as unsatisfactory dispersion effect, achieve good storage stability and fluidity, improve coating performance, The effect of high dispersion efficiency

Inactive Publication Date: 2007-10-03
SHENZHEN OCEAN POWER INDUSTRIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the traditional dispersants used in the past, such as alkyl sulfonates or sulfates, alkyl ammonium salts, etc., however, these dispersants are not ideal for the dispersion of various pigments, especially organic pigments

Method used

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  • High molecular dispersant agent and its preparing method
  • High molecular dispersant agent and its preparing method
  • High molecular dispersant agent and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1. Add 14 parts by weight (parts by weight, the same below) of dimethyl polyethylene glycol acrylate single body, and then add 0.4 parts of isopropanol and 0.1 parts of methanol mixed solution.

[0022] 2. Dissolve a 1.5% initiator in 0.05 part of methanol, and add it into the constant pressure dropping funnel. Then 0.75 parts of acrylic acid and 1 part of butyl methacrylate were mixed into another constant pressure dropping funnel. Begin to blow nitrogen, and heat, stir. Since it is a solution system reaction, the temperature is kept constant at 70°C. Within 30 minutes after the dropwise addition of the mixed monomers was completed, the dropwise addition of the initiator was completed. After the initiator was added dropwise, reacted for 2 hours to end the reaction. The product was taken out and placed in a pear-shaped flask, and subjected to rotary evaporation to obtain a crude product.

[0023] 3. The obtained crude product was dissolved in tetrahydrofuran (THF),...

Embodiment 2

[0026] 1. Add 15 parts by weight (parts by weight, the same below) of dimethyl polyethylene glycol acrylate single body, and then add 0.4 parts of isopropanol and 0.1 parts of methanol mixed solution.

[0027] 2. Dissolve a 2.0% initiator in 0.05 part of methanol, and add it into the constant pressure dropping funnel. Then 0.80 parts of acrylic acid and 1 part of methyl methacrylate were mixed and added to another constant pressure dropping funnel. Begin to blow nitrogen, and heat, stir. Since it is a solution system reaction, the temperature is kept constant at 75°C. Within 30 minutes after the dropwise addition of the mixed monomers was completed, the dropwise addition of the initiator was completed. After the initiator was added dropwise, reacted for 1.5 hours to end the reaction. The product was taken out and placed in a pear-shaped flask, and subjected to rotary evaporation to obtain a crude product.

[0028] 3. The obtained crude product was dissolved in tetrahydrof...

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Abstract

A high-molecular disperser with 7.2-7.5 centipoises as characteristic viscosity features that the methoxy ethanediol is used as hydrophilic chain segment playing the space stabilizing role and the ester radical is used as anchor group of pigment. Its preparing process includes such steps as synthesizing coarse product, purifying and preparing final product.

Description

【Technical field】 [0001] The invention relates to a novel polymer dispersant, in particular to a dispersant for water-based paint and printing ink, and also relates to a preparation method of the dispersant. 【Background technique】 [0002] Pigment is an important raw material in industrial production such as ink, paint and plastic, and plays a pivotal role. In chemical industries such as coatings, pigment dispersion is an important part of coating manufacturing technology. Most of the pigment particles are bonded together in the drying process in the production process to form aggregates. If they are used directly, they will have a serious impact on the application performance of the pigment, such as coloring strength, hiding power, transparency, etc. In practical application, the pigment must be effectively dispersed so that its particle size and particle size distribution become a stable dispersion system that meets the requirements. Most of the traditional dispersants u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/52C09D7/12C09K23/52
Inventor 关有俊何唯平
Owner SHENZHEN OCEAN POWER INDUSTRIAL CO LTD
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