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A kind of preparation method of py138 derivative for liquid crystal display

A technology for liquid crystal displays and derivatives, which is applied in the field of preparation of PY138 derivatives for liquid crystal displays, can solve the problems of low affinity of the vehicle, low stimulating activity, poor dispersibility, etc., and achieves improved storage stability and improved Quality, improve the effect of product dispersion

Active Publication Date: 2021-03-09
山东盛宏安华化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The dispersion stability mainly depends on the electrostatic effect and the three-dimensional hindrance effect. Generally, both effects are present, but the three-dimensional hindrance effect is more obvious. In order to increase the three-dimensional hindrance effect, the adsorption of the resin must be promoted. To improve the adsorption force of the resin, the resin must be made The component with affinity (replacing group) is chemically combined with the pigment, but generally the pigment with good tolerance has low stimulation activity to the outside world, low affinity with the vehicle, and poor dispersion

Method used

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  • A kind of preparation method of py138 derivative for liquid crystal display
  • A kind of preparation method of py138 derivative for liquid crystal display

Examples

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Effect test

Embodiment 1

[0027] A preparation method of PY138 derivatives for liquid crystal displays, comprising the following steps:

[0028] (1) at 5m 2 Put 3,500kg of chlorosulfonic acid into the enamel reaction tank and add cold water to cool down to less than 10°C at a speed of 40r / min, then put in 275kg of thionyl chloride and 500kg of crude PY138 in turn, and control the temperature at 25°C, and continue stirring for 12 hours , cooled to 10°C to obtain mixed solution A;

[0029] (2) at 20m 2 Add 5000kg of water and 4000kg of ice to the dilution kettle respectively, control the temperature at 2°C, slowly discharge the mixed liquid A in the enamel reaction tank into the dilution kettle within 100 minutes, control the temperature to less than 12°C, stir for 1 hour while cooling down 5°C to get the diluent;

[0030] (3) Dilute the solution at 160m 2 Press filter in a filter press, add 1% hydrochloric acid at a temperature of 5°C to wash until the pH is 4, and then wash with ice water until neu...

Embodiment 2

[0034] A preparation method of PY138 derivatives for liquid crystal displays, comprising the following steps:

[0035] (1) at 5m 2 Put 3375kg of chlorosulfonic acid into the enamel reaction tank and add cold water to cool down to less than 10°C at a speed of 40r / min, then put in 250kg of thionyl chloride and 450kg of crude PY138 in turn, and control the temperature at 30°C, and continue stirring for 12 hours , cooled to 10°C to obtain mixed solution A;

[0036] (2) at 20m 2 Add 4500kg of water and 4600kg of ice to the dilution kettle, control the temperature at 0°C, slowly discharge the mixed solution A in the enamel reaction tank into the dilution kettle within 160 minutes, control the temperature to less than 12°C, stir for 1 hour while cooling down 0°C to get the diluent;

[0037] (3) Dilute the solution at 160m 2 Filtering in a filter press, adding 1% hydrochloric acid at a temperature of 0°C to wash until the pH is 5, and then washing with ice water until neutral to o...

Embodiment 3

[0041] A preparation method of PY138 derivatives for liquid crystal displays, comprising the following steps:

[0042] (1) at 5m 2 Put 3625kg of chlorosulfonic acid into the enamel reaction tank and add cold water to cool down to less than 10°C at a speed of 40r / min, then put in 300kg of thionyl chloride and 550kg of crude PY138 in turn, and control the temperature at 27°C, and continue stirring for 12 hours , cooled to 10°C to obtain mixed solution A;

[0043] (2) at 20m 2 Add 5500kg of water and 4400kg of ice to the dilution kettle, control the temperature at 1°C, slowly discharge the mixed solution A in the enamel reaction tank into the dilution kettle within 140 minutes, control the temperature to less than 12°C, stir for 1 hour while cooling down 3°C to get the diluent;

[0044] (3) Dilute the solution at 160m 2 Filtering in a filter press, adding 1% hydrochloric acid at a temperature of 2°C to wash until the pH is 5, and then washing with ice water until neutral to o...

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Abstract

The invention provides a preparation method of a PY138 derivative for a liquid crystal display, and relates to the field of liquid crystal displays. According to the preparation method of the PY138 derivative for the liquid crystal display, raw materials such as chlorosulfonic acid, thionyl chloride, PY138 crude product, auxiliary ED, etc., are selected, and the raw material ratio and preparationsteps are further controlled, so that the PY138 derivative is prepared on the surface of a pigment as a adsorption point of a resin, thereby effectively improving the dispersion stability of the pigment.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a preparation method of PY138 derivatives for liquid crystal displays. Background technique [0002] Liquid crystal display uses electric current to stimulate liquid crystal molecules to produce points, lines, and surfaces to form a picture with the back lamp tube. Liquid crystal is a special substance between solid and liquid. With color filters, changing the voltage applied to the liquid crystal is the same as The amount of light transmission of a certain color can be changed, and the quality of the color filter mainly depends on the performance of the pigment photoresist and its coating process, and the tinting strength depends to a large extent on the dispersion level of the pigment. [0003] The dispersion stability mainly depends on the electrostatic effect and the three-dimensional hindrance effect. Generally, both effects are present, but the three-dimensional hindr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1334C07D401/04
CPCC07D401/04G02F1/1334
Inventor 刘建胜陈小明张军孙小龙
Owner 山东盛宏安华化学有限公司
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