Organic pigment hyperdispersant, preparation method thereof, pigment composition and water-based ink

A technology of organic pigments and super dispersants, applied in the field of pigment compositions and water-based inks, can solve the problems of reducing ink viscosity and high viscosity, and achieve the effects of speeding up drying speed, increasing ratio and high yield

Inactive Publication Date: 2019-06-14
浙江浩川科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high pigment content will inevitably lead to high viscosity, and the viscosity of the ink must be effectively reduced

Method used

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  • Organic pigment hyperdispersant, preparation method thereof, pigment composition and water-based ink
  • Organic pigment hyperdispersant, preparation method thereof, pigment composition and water-based ink
  • Organic pigment hyperdispersant, preparation method thereof, pigment composition and water-based ink

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0047] The above preparation method has the advantages of high yield, simple operation, environmental protection and the like.

[0048] Another aspect of the present invention also provides a kind of pigment composition, comprises component A and component B, wherein,

[0049] Component A is composed of at least one organic pigment, and the organic pigment is mainly naphthol-based organic pigments, such as Pigment Red 2, Pigment Red 5, Pigment Red 7, Pigment Red 8, Pigment Red 9, Pigment Red 10, Pigment Red 11, Pigment Red 12, Pigment Red 13, Pigment Red 14, Pigment Red 15, Pigment Red 16, Pigment Red 17, Pigment Red 18, Pigment Red 19, Pigment Red 21, Pigment Red 22, Pigment Red 23, Pigment Red 30, Pigment Red 31, Pigment Red 32, Pigment Red 38, Pigment Red 95, Pigment Red 112, Pigment Red 114, Pigment Red 119, Pigment Red 146, Pigment Red 147, Pigment Red 148, Pigment Red 157, Pigment Red 162, Pigment Red 170, pigment red 187, pigment red 188, pigment red 210, pigment red 2...

Embodiment 1

[0055] Embodiment 1: the synthesis of hyperdispersant naphthol AS-L207

[0056] Stir 2.63 parts of naphthol AS and 20.7 parts of Huntsman L207 evenly at 40°C, add 0.3 parts of paraformaldehyde and 0.25 parts of glacial acetic acid, stir and react at 120°C for 4 hours, use thin-layer chromatography to spot the plate, after the reaction is completed It was purified through a 200-300 mesh silica gel column, and the eluent was petroleum ether and ethyl acetate. After rotary evaporation, 10.3 parts of the product were obtained.

[0057] The molecular formula of the product is shown in Formula IV:

[0058]

[0059] figure 1 Be the infrared spectrogram of the product of this embodiment, wherein 2869cm -1 It is the characteristic peak of C-H stretching in the alkyl group, 1454cm -1 and 1373cm -1 Is the characteristic peak of alkyl deformation vibration, 1108cm -1 It is a strong absorption peak of the asymmetric stretching vibration of the ether bond. Polyetheramine has a large...

Embodiment 2

[0060] Embodiment 2: the synthesis of hyperdispersant naphthol AS-L100

[0061] Stir 2.63 parts of naphthol AS and 11 parts of Huntsman L100 evenly at 40°C, add 0.6 parts of paraformaldehyde and 0.14 parts of p-toluenesulfonic acid, stir and react at 120°C for 3 hours, spot the plate with thin-layer chromatography, and react After completion, it was purified through a 100-200 mesh silica gel column, the eluent was petroleum ether and ethyl acetate, and 6.2 parts of the product were obtained after rotary evaporation.

[0062] Product molecular formula is as shown in formula V:

[0063]

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Abstract

The invention relates to an organic pigment hyperdispersant, a preparation method thereof, a pigment composition and water-based ink containing the organic pigment hyperdispersant, wherein the molecular structural formula of the hyperdispersant is as shown in the specification, X, Y, and Z are independently represent hydrogen, chlorine, methyl, ethyl, methoxyl, ethyoxyl or nitro, a is any integerfrom 0 to 10, and b is any integer from 11 to 58. The organic pigment hyperdispersant is prepared from naphthol or a derivative thereof, polyether amine and paraformaldehyde as raw materials through aone-pot Mannich reaction method, so that the dispersing property is good, the viscosity of naphthol-series organic pigments in a water-based ink system can be effectively reduced, the color force ofthe ink can be ensured, and the preparation method has the advantages of being high in yield, simple to operate, green and environment-friendly and the like.

Description

technical field [0001] The invention relates to a dispersant, in particular to an organic pigment hyperdispersant and a preparation method thereof, as well as a pigment composition and water-based ink containing the organic pigment hyperdispersant. Background technique [0002] Compared with solvent inks, water-based inks have huge advantages in terms of environmental protection. However, due to the high latent heat of evaporation of water, the drying speed of inks on high-speed printing machines is greatly affected, thus restricting the development and application of water-based inks. [0003] Theoretically, the printing factory can promote the evaporation of water by increasing the temperature, reducing the humidity and increasing the air volume, but since most of the gravure printing substrates are plastic films, it is actually not feasible to increase the drying temperature, let alone bring additional consumption and cost. [0004] Therefore, it is necessary for ink ma...

Claims

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Application Information

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IPC IPC(8): C09D11/03C08G81/02
Inventor 陈晓阳陈发生金闺臣赵丽婷
Owner 浙江浩川科技有限公司
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