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A kind of polyglycerol ester compound and its preparation method and application

A technology for polyglycerol esters and compounds, applied in the field of chemical synthesis, can solve the problems such as no clear and targeted reports of polyglycerol esters, and achieve the effects of preventing flocculation, simple operation, and easy industrialization.

Active Publication Date: 2021-05-25
山东滨州金盛新材料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] After searching, there is no clear and targeted report on the application of polyglycerol esters in coatings

Method used

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  • A kind of polyglycerol ester compound and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of preparation method of polyglycerol ester compound, comprises steps as follows:

[0038] Add 1000kg tetrapolyglycerol into the reaction kettle, slowly raise the temperature to 100°C during stirring, then add 943kg of phthalic anhydride (before the reaction, the mixed acid value of the reactant is 367), after the phthalic anhydride is dissolved, replace it with nitrogen four times, and raise the temperature to 160°C To react, keep the temperature and pressure of the system at -0.02MPa, and react for 6 hours. Sampling, the acid value of the product was measured to be 165, and the reaction was terminated to obtain the finished product A of the dispersant. The acid value reflects the situation of free carboxyl groups in the product, so it can be seen that the product made in this embodiment contains a large amount of free carboxyl groups.

Embodiment 2

[0040] A kind of preparation method of polyglycerol ester compound, comprises steps as follows:

[0041] Add 1000kg of hexaglycerin into the reaction kettle, slowly heat up to 100°C during stirring, then add 987kg of tetrahydrophthalic anhydride (before the reaction, the mixed acid value of the reactant is 366), and after the phthalic anhydride is dissolved, replace it with nitrogen 4 times, and heat up to React at 140°C, keep the temperature and pressure of the system at -0.03MPa, and react for 8 hours. Sampling was carried out, and the acid value of the product was measured to be 170, and the reaction was terminated to obtain the finished product B of the dispersant. As can be seen from this, the product that this embodiment makes contains a large amount of free carboxyl groups.

Embodiment 3

[0043] A kind of preparation method of polyglycerol ester compound, comprises steps as follows:

[0044] Add 900kg of decaglycerol to the reaction kettle, slowly heat up to 100°C during the stirring process, then add 731kg of hexahydrophthalic anhydride (before the reaction, the mixed acid value of the reactant is 326), after the phthalic anhydride is dissolved, replace it with nitrogen 4 times, and heat up to React at 140°C, keep the temperature and pressure of the system at -0.01MPa, and react for 8 hours. Sampling, the acid value of the product was measured to be 150, and the reaction was terminated to obtain the finished product C of the dispersant. As can be seen from this, the product that this embodiment makes contains a large amount of free carboxyl groups.

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Abstract

The present invention relates to a polyglycerol ester compound and its preparation method and application. The polyglycerol ester compound of the present invention has more free carboxyl groups as anchoring groups, has obvious stabilizing and dispersing effect on pigments, prevents flocculation of pigments, and makes dispersion The system is in a stable state, with stable anchoring to the pigment, no floating color and high luster.

Description

Technical field: [0001] The invention relates to a polyglycerol ester compound and its preparation method and application, belonging to the technical field of chemical synthesis. Background technique: [0002] Coating is a kind of slurry that can be coated on the surface of objects by different construction techniques to form a solid film with strong adhesion, certain strength and continuous state. The colorful paint not only protects the painted parts, but also provides rich visual enjoyment for human beings. [0003] Pigment is an important part of paint. Whether it is dispersed in the medium not only affects the color and aesthetics of the paint, but also affects the physical and chemical properties of the paint, such as adhesion, durability, and impact strength. The dispersion of pigments in paint consists of three stages: wetting, mechanical de-aggregation and stabilization. The first two processes are mainly completed by equipment, which is the premise of creating sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C69/80C07C69/75C07C67/08C09D7/63C09B67/38
CPCC07C67/08C07C69/75C07C69/80C09B67/008C09B67/0089C07C2601/14C07C2601/16C09D7/63
Inventor 安伟周小光王波
Owner 山东滨州金盛新材料科技有限责任公司