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Phosphate-ester dispersing agent and preparing method and application thereof

A technology of dispersant and phosphoric acid ester, applied in the field of phosphoric acid ester dispersant and its preparation and application, can solve the problems of few process steps and low reaction temperature, and achieve the effects of few process steps, low reaction temperature and excellent dispersion stability

Active Publication Date: 2018-02-23
AFCONA CHEM HAIMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method has low reaction temperature, fewer process steps, light color of the finished product, simple and feasible operation, and strong controllability, thereby solving the defects of the above-mentioned preparation method

Method used

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  • Phosphate-ester dispersing agent and preparing method and application thereof
  • Phosphate-ester dispersing agent and preparing method and application thereof
  • Phosphate-ester dispersing agent and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1: water-soluble phosphate ester dispersant 1

[0049] Put 40g of xylene and 13.4g of 3-mercapto-1-propanol into a four-neck flask equipped with a condenser tube, a thermometer, and a constant pressure dropping funnel, start stirring, replace nitrogen, and heat up to 75°C. 12.2g of methyl methacrylate, 87.8g of methacrylic acid polyglycol ether (Mn=400) and 0.94g of AIBN mixed solution were added dropwise to the reaction solution through a constant pressure dropping funnel, and dropped for 4 hours. After the addition was complete, the reaction was then incubated for 4 hours, and all solvents and unreacted monomers were distilled off under reduced pressure at 100° C. to obtain polymer monoalcohol P1, which was a light yellow viscous liquid with Mn=1100. Subsequently, the temperature of the colorless liquid was lowered to 60°C, and 11.5 g of polyphosphoric acid (PPA116) was added while vigorously stirring, and the stirring was continued at 90°C for 6 hours to o...

Embodiment 2

[0050] Embodiment 2: water-soluble phosphate ester dispersant 2

[0051] Put 40g of propylene glycol methyl ether acetate and 7.9g of 3-mercapto-1-propanol into a four-neck flask equipped with a condenser tube, a thermometer, and a constant pressure dropping funnel, start stirring, replace nitrogen, and heat up to 70°C. The pre-configured 8.5g of methyl methacrylate, 82.3g of allyl polyethylene glycol ether (Mn=800), 9.2g of styrene and 0.55g of BPO mixed solution were added dropwise through a constant pressure dropping funnel Into the reaction solution, after 4 hours, the dropwise addition was completed, and then the heat preservation reaction was carried out for 4 hours, and all solvents and unreacted monomers were removed by vacuum distillation at 100 ° C to obtain polymer monohydric alcohol P2, which was a light yellow viscous liquid. Mn=1800. Subsequently, the temperature of the colorless liquid was lowered to 60°C, and 6.77g of polyphosphoric acid (PPA116) was added int...

Embodiment 3

[0054] Embodiment 3: highly polar phosphate ester dispersant 3

[0055] Put 40g of xylene and 3.4g of 3-mercapto-1-propanol into a four-neck flask equipped with a condenser tube, a thermometer, and a constant pressure dropping funnel, start stirring, replace nitrogen, and heat up to 75°C. The butyl acrylate of 56.1g, the polyglycol ether of methacrylic acid (Mn=400) of 28.7g, the AIBN mixed solution of the styrene of 15.2g and 0.27g are added dropwise in the reaction solution by constant pressure dropping funnel, The dropwise addition was completed after 4 hours, and then the reaction was kept for 4 hours, and all solvents and unreacted monomers were distilled off under reduced pressure at 100° C. to obtain polymer monohydric alcohol P3, which was a light yellow viscous liquid with Mn=4100. Subsequently, the temperature of the colorless liquid was lowered to 60°C, and 2.85g of polyphosphoric acid (PPA116) was added while vigorously stirring, and the stirring was continued at 9...

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Abstract

The invention relates to a phosphate-ester dispersing agent. The phosphate-ester dispersing agent comprises a free radical polymer precursor shown in the chemical formula (1) and reaction products ofa phosphated reagent (The formula is defined in the description), wherein a raw material of the free radical polymer precursor shown in the chemical formula (1) is prepared from a monomer A, a monomerB, an initiating agent and a chain transfer agent, the monomer A is alkyl methacrylate or alkyl acrylate, the monomer B is an ethylenic-bond unsaturated monomer with 5-80 carbon atoms and a polyethersegment, and in the chain transfer agent (The formula is defined in the description), m is an integer between 2 and 12. When the phosphate-ester dispersing agent is used in a coating and ink, the phosphate-ester dispersing agent has the wide consistency and the excellent dispersion stability, and is low in color paste viscosity, good in paint-film showing color and high in luster.

Description

technical field [0001] The invention relates to a phosphoric acid ester dispersant and its preparation method and application. The dispersant is prepared by reacting a free radical copolymer with terminal hydroxyl groups and a phosphorylation reagent, and has wide compatibility and excellent dispersion stability when used in coatings and inks. Background technique [0002] In the production process of coatings and inks, the dispersion of solid pigment particles in liquid media is ubiquitous. Establishing a uniform and stable pigment dispersion system can not only improve production efficiency and reduce energy consumption, but also enable the final product to exhibit excellent performance, such as high gloss, low viscosity, high tinting strength, preventing color floating and flocculation, etc. [0003] Substances with phosphate end groups have been shown to act as wetting and dispersing agents for the homogeneous and stable dispersion of solid pigment particles in liquid m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/28C08F220/14C08F283/06C08F220/18C08F8/40C08F2/38C09D7/65C09D11/03
CPCC09D11/03C08F2/38C08F8/40C08F220/18C08F220/28C08F283/065C08F220/286C08F220/1808C08F220/1804C08F220/1806C08F220/14C08F220/287C08F212/08C08F220/1812C08F220/1818
Inventor 王志军
Owner AFCONA CHEM HAIMEN
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