Preparation method of triethanolamine stearate monoester and application of triethanolamine stearate monoester to grinding aiding for talc

A technology of triethanolamine monoester and triethanolamine, which is applied in the field of chemical synthesis agent preparation, can solve the problems of low production capacity, increased production cost of modified talc, unsuitable for continuous production, etc. Sustained development, the effect of eliminating electrostatic effects

Inactive Publication Date: 2020-06-09
辽宁精华新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing modification methods mostly adopt dry modification and wet modification. These methods are all intermittent, have low production capacity, are not suitable for continuous production, and also increase the production cost of modified talc powder.

Method used

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  • Preparation method of triethanolamine stearate monoester and application of triethanolamine stearate monoester to grinding aiding for talc
  • Preparation method of triethanolamine stearate monoester and application of triethanolamine stearate monoester to grinding aiding for talc
  • Preparation method of triethanolamine stearate monoester and application of triethanolamine stearate monoester to grinding aiding for talc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Preparation of triethanolamine monostearate

[0021] In 500mL there-necked flask, add 142.24g stearic acid (0.5moL), under N 2 Under the atmosphere, heat up to 70°C by heating in an oil bath, stearic acid begins to melt and stir, continue to heat up to 90°C, stearic acid is completely melted, and then start to drop 74.6g triethanolamine (0.5moL) through a constant pressure dropping funnel, The dropwise addition was completed within 30 minutes, and the reaction was continued at 90°C for 3.5 hours. After the reaction was completed, vacuum was applied at 90°C to remove the moisture in the product, and finally the material was poured out while it was hot. Fatty acid triethanolamine monoester.

Embodiment 2

[0023] Preparation of triethanolamine monostearate

[0024] In a 500mL three-necked flask with a magnetic stirrer and a water separator, under an inert gas atmosphere, 74.6g triethanolamine (0.5moL), 142.24g stearic acid (0.5moL) were mixed in a molar ratio of 1moL: 1moL and an organic solvent The toluene phases were mixed, and under magnetic stirring, the reaction was refluxed at 120°C until no water was formed in the water separator (about 12h), and the reaction was closed and cooled to room temperature. Equipped with a distillation device, first evaporate toluene under normal pressure, and then evaporate excess ethanolamine and by-products under reduced pressure to obtain triethanolamine monostearate as a colorless solid to pale yellow solid.

[0025] The triethanolamine stearate monoester in Example 1 and Example 2 was used to prepare a modified talcum powder / polypropylene composite material.

[0026] First, 10 g of triethanolamine stearate was dissolved in ethanol soluti...

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Abstract

The invention relates to the technical field of preparation of chemically-synthesized agents, especially to a preparation method of triethanolamine stearate monoester and application of triethanolamine stearate monoester to grinding aiding for talc. The preparation method is characterized in that triethanolamine and stearic acid react for a certain period of time in an inert gas atmosphere under the condition of an organic solvent or no solvent at a certain temperature according to a reaction formula as described in the specification to obtain the triethanolamine stearate monoester which is asolid with a color from colorless to faint yellow and has a structural formula (I) as shown in the specification. Compared with the prior art, the invention has the following beneficial effects: 1) asa grinding aid for talc, the triethanolamine stearate monoester can realize selective adsorption and electrical neutralization on the surface of a material, eliminate an electrostatic effect, improvethe dispersity of a fine powder material and improve the utilization rate of mechanical energy; 2) the p triethanolamine stearate monoester is low in toxicity, efficient and environment-friendly, plays a certain role in inhibiting dust pollution and is beneficial for sustainable development; and 3) the preparation method is simple and easy to control, complex subsequent treatment is not needed, and the production efficiency of modified talc is improved.

Description

technical field [0001] The invention relates to the technical field of preparation of chemical synthesis agents, in particular to a preparation method of triethanolamine stearate and its talc grinding aid application. Background technique [0002] Talc (Mg 3 Si 4 o 10 [OH] 2 ) is a hydrous magnesium aluminum silicate mineral with a density of about 2.75g / cm 3 , is a white crystalline substance with chemical stability, high melting point, large specific heat, low thermal conductivity, electrical conductivity, low shrinkage rate, strong oil absorption capacity, acid and alkali resistance, etc., as an excellent functional raw material and filler, widely used in rubber , plastics, coatings, paper, medicine and other industries. [0003] Talc can improve the stiffness and creep resistance of filler materials at high temperatures. Talc can significantly improve the heat resistance of filler materials. The characteristics of talc powder make it a good reinforcement additive ...

Claims

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Application Information

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IPC IPC(8): C07C213/06C07C219/06C09K3/14
CPCC07C213/06C09K3/1454C07C219/06
Inventor 杨雪梁兵杨国聪
Owner 辽宁精华新材料股份有限公司
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