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High-bulk-density acrylic acid thickening agent as well as preparation method and application thereof

An acrylic thickener and bulk density technology, applied in the field of polymers, can solve problems such as limited application prospects and unfavorable application characteristics, and achieve the effects of simple operation, fast dispersion, and excellent thermal stability

Active Publication Date: 2022-01-07
GUANGZHOU TINCI MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although this solution can prepare acrylic resin with high specific gravity, it has some unfavorable application characteristics, that is, if the molecular weight is small, the hydrosol has stringiness, and it is not easy to break when digging, and there are a lot of stringiness.
If the molecular weight is large, colloidal particles similar to water-absorbing resins will be formed, and its application prospects are limited

Method used

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  • High-bulk-density acrylic acid thickening agent as well as preparation method and application thereof
  • High-bulk-density acrylic acid thickening agent as well as preparation method and application thereof
  • High-bulk-density acrylic acid thickening agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] This embodiment provides a special powder thickener for 3D reactive printing and dyeing, and the preparation method includes the following steps:

[0086] Dissolve 60g of acrylic acid in water, add 32% liquid caustic soda dropwise to neutralize under chilled water circulation, and the degree of neutralization is 75%; then add 1.8g of 2-acrylamido-2-methylpropanesulfonic acid (AMPS), 1.2g N,N methylenebisacrylamide (MBAA), 1.2g OP-10 and 10% ammonium persulfate aqueous solution, then add a certain amount of water as the water phase; subsequently, add 1.2g Span60, 1.2g of lauryl methacrylate (SMA) and cyclohexane were used as the oil phase to ensure that the oil-water ratio was 1.5:1; then the water phase was added to the oil phase and stirred rapidly to make it emulsified completely, and nitrogen was introduced for deoxygenation for about 1h ; After a certain period of nitrogen, the temperature was raised to 70 °C to initiate polymerization. After the reaction, the produ...

Embodiment 2

[0088] Basically the same as Example 1, only the degree of neutralization was changed to 90%.

Embodiment 3

[0090] Basically the same as Example 1, only the degree of neutralization was changed to 50%.

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Abstract

The invention belongs to the technical field of polymers, and particularly relates to a high-bulk-density acrylic acid thickening agent, which is characterized in that gel particles are prepared by adopting a reversed-phase suspension polymerization method, and the gel particles are dried and crushed to obtain the high-bulk-density acrylic acid thickening agent. Raw materials in the reversed-phase suspension polymerization reaction comprise an oil phase and a water phase, the water phase contains at least partially neutralized acrylic acid monomers and water-soluble monomers, the oil phase contains oil-soluble monomers, and the water phase and the oil phase are mixed to react in the presence of a cross-linking agent and an initiator. The bulk density of the thickening agent reaches 89g / 100mL, the thickening agent is fine and smooth in appearance and free of wire drawing and balling, it is guaranteed that the thickening agent can have a good thickening effect in a reactive printing and dyeing formula, compared with Carbomer, a post-neutralization process does not need to be added, the technological process is greatly simplified, the production process is simplified, and the cost is effectively reduced.

Description

technical field [0001] The invention belongs to the field of polymers, and in particular relates to a high bulk density acrylic acid thickener and a preparation method and application thereof. Background technique [0002] During the period from 2013 to 2020, the applicant has carried out a large number of patent layouts for acrylic thickeners, such as ZL201611012167.5, ZL201611011817.4, ZL201710256545.2, ZL201610172789.8, ZL201710256567.9, etc., all of which are without exception. The powdery acrylic resin obtained by precipitation polymerization is used. The common characteristics of this type of acrylic resin are: low bulk density and long wetting time during dispersion and swelling, which has unfavorable restrictions on transportation and use. [0003] The applicant has been conducting related research on acrylic resin with high bulk density. This research originated more than ten years ago. ZL201110315133.4 discloses a preparation method of spherical polyacrylic resin,...

Claims

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Application Information

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IPC IPC(8): C08F220/06C08F220/58C08F220/18C08F222/38C08F220/56C08F212/36C08F283/06C08F2/14D06P1/52
CPCC08F220/06C08F283/065C08F2/14D06P1/5257C08F220/585C08F220/1812C08F222/385C08F220/56C08F212/36C08F220/1818C08F220/1808
Inventor 肖创洪李泓淼李泽勇
Owner GUANGZHOU TINCI MATERIALS TECH
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