Preparation method of non-ionic hyperbranched macromolecular dispersant for organic pigment

A technology of polymer dispersants and organic pigments, applied in the direction of organic dyes, etc., can solve the problem of low solid content, achieve high solid content, good fluidity, and bright colors

Inactive Publication Date: 2008-02-06
SUZHOU SUNMUN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these polymer dispersants improve the dispersion stability and fluidity of pig

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation method of the nonionic hyperbranched polymer dispersant for organic pigments of the present invention adopts the following process steps:

[0029] Hydrophobic hyperbranched polymer of the present invention gets aliphatic hyperbranched polyester (M n 17.60 grams of 17600), 7.84 grams of 2,4-toluene diisocyanate as the linking agent and 17.20 grams of polycaprolactone monoacrylate (average molecular weight is 344) for the hydrophilic chain were dissolved in 158.40 grams, 7.84 grams and 68.80 grams respectively Solvent methyl n-butyl ketone, fully dissolved and mixed. Prepare aliphatic hyperbranched polyester methyl n-butanone solution, 2,4-toluene diisocyanate methyl n-butanone solution and polycaprolactone monoacrylate methyl n-butanone solution respectively. Place 7.24 grams of 2,4-toluene diisocyanate methyl n-butanone solution in a four-neck flask with stirring, thermometer, dropping funnel and condensation device, and heat up under stirring, the temp...

Embodiment 2

[0032] The preparation method of the nonionic hyperbranched polymer dispersant for organic pigments of the present invention adopts the following process steps:

[0033] Hydrophobic hyperbranched polymer of the present invention gets hyperbranched polyester-imide (M n11.70 grams of 11700), 7.06 grams of hexamethylene 1,6-diisocyanate and 20.00 grams of polyethylene glycol-1000 (average molecular weight of 1000) for the hydrophilic chain were dissolved in 11.70 grams, 63.54 grams and 20.00 g of solvent acetone, fully dissolved and mixed. Prepare hyperbranched polyester-imide acetone solution, hexamethylene 1,6-diisocyanate acetone solution and polyethylene glycol-600 acetone solution respectively. Place 70.60 g of hexamethylene 1,6-diisocyanate in acetone solution in a four-necked flask equipped with stirring, thermometer, dropping funnel and condensing device, heat up under stirring, the temperature is: 40°C; 40.00 g The acetone solution of polyethylene glycol-1000 is placed...

Embodiment 3

[0036] The preparation method of the nonionic hyperbranched polymer dispersant for organic pigments of the present invention adopts the following process steps:

[0037] Hydrophobic hyperbranched polymer of the present invention gets aromatic hyperbranched polyester (M n 12.80 grams of 12800), 9.01 grams of 4'-diphenylmethane diisocyanate as the linking agent, and 20.00 grams of polyethylene glycol monomethyl ether-500 (average molecular weight of 500) for the hydrophilic chain were dissolved in 115.20 grams respectively , 13.52 grams and 80.00 grams of solvent ethyl acetate, fully dissolved and mixed. Make aromatic hyperbranched polyester ethyl acetate solution, 4,4'-diphenylmethane diisocyanate ethyl acetate solution and polyethylene glycol monomethyl ether-500 ethyl acetate solution respectively. Put 22.53 grams of ethyl acetate solution of 4,4'-diphenylmethane diisocyanate into a four-necked flask equipped with a stirring device, a thermometer, a dropping funnel and a con...

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Abstract

The invention relates to a preparation method of non-ionic hyperbranched macromolecular dispersing agent for organic pigment belonging to the fine chemical field. The invention mainly adopts hydrophobic hyperbranched polymer, coupling agent and hydrophilic chain which are respectively dissolved in solvent to be made into solution through complete dissolving and even mixing; coupling agent solvent solution is added in a reaction vessel and warms up through stirring; hydrophilic chain solvent solution is also added in the reaction vessel for stirring and heat preservation reaction; and then, hydrophobic hyperbranched polymer solvent solution is added to complete warming-up and heat preservation reaction through stirring; finally, the non-ionic hyperbranched macromolecular dispersing agent is obtained after cooling, filtration, washing and vacuum drying. The invention can make nanometer organic dye with high solid content, ideal liquidity, high stability and fresh color; meanwhile, the invention has the advantages of simple technical process, reaction being completed at lower temperature, convenient purification of products and non-occurrence of gel and automatic acceleration phenomena.

Description

technical field [0001] The invention relates to a preparation method of a nonionic hyperbranched polymer dispersant for organic pigments, belonging to the field of fine chemicals. Background technique [0002] Pigments mainly exist in the form of aggregates, aggregates or flocs, and the particles are coarse and unevenly distributed, resulting in poor color brilliance and brightness of the pigments. In addition, as a colorant, the pigment can only exert its coloring effect well if it is uniformly and stably dispersed in the medium. Therefore, the superfineness and dispersion stability of pigments are the prerequisites for their wide application. Especially after the particle size of the pigment is reduced to the nanometer size, various physical and chemical properties have been significantly improved. However, as the particle size of the pigment decreases, the surface free energy of the pigment increases, the system becomes unstable, and the tendency to automatically reduce...

Claims

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Application Information

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IPC IPC(8): C09B69/10
Inventor 房宽峻胥正安付少海张霞蒋学
Owner SUZHOU SUNMUN TECH CO LTD
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