Polyester type hyperbranched polymer pigment dispersant and preparation thereof

A technology of hyperbranched polymer and pigment dispersant, applied in chemical instruments and methods, dyeing polymer organic compound treatment, chemical/physical process, etc., can solve the problem of poor color brightness and vividness, coarse particles and uneven distribution of pigments. and other problems, to achieve the effect of low production cost, simple synthesis method and good controllability

Inactive Publication Date: 2009-01-28
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Pigments mainly exist in the form of aggregates, aggregates or flocs, with coarse particles and uneven distribution, resulting in poor color brightness and vividness of pigments

Method used

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  • Polyester type hyperbranched polymer pigment dispersant and preparation thereof
  • Polyester type hyperbranched polymer pigment dispersant and preparation thereof
  • Polyester type hyperbranched polymer pigment dispersant and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: Add 0.1 moles of trimethylolpropane, 2.1 moles of dimethylolbutanoic acid and 1% of the total mass of reactants into a four-necked flask equipped with a stirrer, thermometer and condenser. Acid catalyst, heating, after the material is melted, start stirring and turn on the vacuum pump, control the reaction temperature to 140℃, the vacuum degree is 1000Pa, after 3 hours, the temperature is raised to 180℃, the vacuum degree is controlled at 60Pa, and the measurement is performed every 1 hour after 5 hours. Acid value, until the acid value is stable, it is the end of the reaction, and the yellow solid product is the third-generation hyperbranched polyester; remove the vacuum and stop the operation of the vacuum pump, add 0.6 mol of lauric acid to the flask while it is hot, stir and evacuate , Control the temperature at 180℃, and the vacuum at 60Pa. After 5 hours, measure the acid value every 1 hour until the acid value is stable, which is the end of the reaction. Th...

Embodiment 2

[0014] Example 2: Add 0.1 moles of pentaerythritol, 1.2 moles of dimethylolpropionic acid, and 4.5% of the total mass of the reactant phosphomolybdic acid catalyst into a four-necked flask equipped with a stirrer, a thermometer and a condenser, and heat the material to be After melting, start stirring and turn on the vacuum pump, control the temperature at 140°C and the vacuum degree at 800Pa. After 3 hours, the temperature is raised to 200°C, and the reaction is controlled at 20Pa to continue the reaction. After 5 hours, the acid value is measured every 1 hour until the acid value is reached. Stability is the end of the reaction, and the second-generation hyperbranched polyester is obtained as a light yellow viscous liquid; remove the vacuum and stop the operation of the vacuum pump, add 0.2 moles of stearic acid to the flask while it is hot, stir and vacuum, and control the temperature to 200 ℃, the vacuum degree is 20 Pa, after 5 hours, the acid value is measured every 1 hour u...

Embodiment 3

[0015] Example 3: Add 0.93 moles of diisopropanolamine and 0.93 moles of succinic anhydride into a four-necked flask equipped with a stirrer, thermometer and condenser. After heating and melting, the reaction is continued for 1 hour at the melting temperature, and then to Add 0.01 mole of trimethylolpropane to the reactor, heat it and wait until the materials are all melted, start stirring and turn on the vacuum pump, control the temperature at 140°C and the vacuum degree to proceed with the polycondensation reaction under the conditions of 4kPa, and then heat up to 190°C after 3 hours , The vacuum degree is 120Pa to continue the reaction, and the acid value is measured every 1 hour after 5 hours, until the acid value is stable, it is the end of the reaction, and the yellow solid is obtained as the fifth-generation hyperbranched polyester; the vacuum pump is stopped at the same time as the vacuum pump is removed. , Add 0.45 moles of oleic acid to the four-neck flask while it is ho...

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PUM

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Abstract

The invention relates to a pigment dispersant of a polyester type branched polymer and a preparation method thereof. In the pigment dispersant, a polyhydroxy compound of By is used as a nuclear molecule, wherein, B represents hydroxy and the functionality y thereof is more than or equal to 2; a polyhydroxy acid of ABx is adopted as a dispersing molecule, wherein, A represents carboxyl, B represents hydroxy and x represents the functionality of the hydroxy which is more than or equal to 2; a vacuum melt polycondensation method is adopted to obtain a melicera polyester type branched polymer and the tail end of which is provided with the hydroxy; then the obtained polyester type branched polymer is utilized to carry out melt polycondensation with a fatty acid under a vacuum condition and finally to carry out esterification with estolide under a normal pressure. As an oleophylic aliphatic carbon chain and a polar group which has a strong absorption effect on the surface of the dye particles exist in the molecule of an output, the output relates to a double-parent functional macromolecule, in particular to a pigment dispersant with excellent performance in a paint and printing ink system and has excellent application prospects in the paint and printing ink industry.

Description

Technical field [0001] The invention relates to a pigment dispersant and a preparation method, in particular to a polyester type hyperbranched polymer pigment dispersant and a preparation method. Background technique [0002] Pigments mainly exist in the form of aggregates, agglomerates or flocs, with coarse particles and uneven distribution, resulting in poor color brightness and vividness of the pigments. As a colorant, the pigment can only play its coloring effect well only when it is uniformly and stably dispersed in the medium. To solve the above problems, non-ionic, anionic, cationic surfactants and some low-molecular or high-molecular substances are commonly used to modify the surface of pigments. The surface polarity of the pigment can be changed by depositing or coating single or multi-molecule surfactants, modifiers, etc. on the surface of the pigment. The present invention is a polyester type hyperbranched polymer pigment dispersant. The hyperbranched polymer has a hig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/78C08G63/60B01F17/52C09B67/20C09C3/10C09K23/52
Inventor 吴璧耀黄俊童小丽柳青后晓慧
Owner WUHAN INSTITUTE OF TECHNOLOGY
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