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Bisazo purple dye and application thereof

A purple dye and disazo technology, applied in disazo dyes, applications, household appliances, etc., can solve the problem of unsatisfactory solubility and achieve the effect of high solubility and improved affinity

Active Publication Date: 2016-02-24
SHENZHEN GUOHUA OPTOELECTRONICS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because there are many rigid benzene rings in its structure, the solubility in n-decane is not ideal, and the prepared ink material is easy to crystallize out from the solvent

Method used

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  • Bisazo purple dye and application thereof
  • Bisazo purple dye and application thereof
  • Bisazo purple dye and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Weigh 1.0g (5mmol, 201g / mol) 1-acetylamino-7-naphthol, 1.92g (10mmol, 192g / mol) bromoisoctane, 1.38g (10mmol, 138g / mol) K 2 CO 3 Dissolved in 50mL of acetonitrile, reflux for 9h. Developing agent: acetone / petroleum ether=1 / 2 (volume ratio), Rf raw material=0.13, Rf product=0.55. After the reaction, the product was poured into 100 mL of water to precipitate an oily product, and the product was extracted with ethyl acetate, and the solvent and isooctane bromide were removed by rotary evaporation at 90°C to obtain the first intermediate. Yield 88%.

[0047] Weigh 0.88 g of the intermediate of the first step and dissolve it in 50 mL of isopropanol, add 20 times the amount of KOH and reflux for 5 h. Developing agent: acetone / petroleum ether=1 / 2 (volume ratio), Rf raw material=0.55, Rf product=0.63. The product solution was poured into water, extracted with ethyl acetate, and dried by rotary evaporation to obtain the second intermediate Yield 88.0%.

[0048]Weigh 2.05...

Embodiment 2

[0053] Weigh 1.0g (5mmol, 201g / mol) 1-acetylamino-7-naphthol, 1.92g (10mmol, 192g / mol) bromoisoctane, 1.38g (10mmol, 138g / mol) K 2 CO 3 Dissolved in 50mL of acetonitrile, reflux for 9h. Developing agent: acetone / petroleum ether=1 / 2 (volume ratio), Rf raw material=0.13, Rf product=0.55. After the reaction, the product was poured into 100 mL of water to precipitate an oily product, and the product was extracted with ethyl acetate, and the solvent and isooctane bromide were removed by rotary evaporation at 90°C to obtain the first intermediate. Yield 88%.

[0054] Weigh 0.88 g of the intermediate of the first step and dissolve it in 50 mL of isopropanol, add 20 times the amount of KOH and reflux for 5 h. Developing agent: acetone / petroleum ether=1 / 2 (volume ratio), Rf raw material=0.55, Rf product=0.63. The product solution was poured into water, extracted with ethyl acetate, and dried by rotary evaporation to obtain the second intermediate Yield 88.0%.

[0055] Weigh 2.0...

Embodiment 3

[0060] The invention provides a kind of disazo violet dye, its general chemical structure formula is as shown in (I):

[0061]

[0062] Among them, R 1 is n-butyl, R 2 is n-butoxy, R 3 is methyl, R 4 For ethyl. Get 1 mass part of disazo violet dye and dissolve it in 1 mass part of n-dodecane to obtain a kind of ink, the ink is purple, and the ink has no crystallization phenomenon when the ink is left standing at low temperature for a long time, which can effectively The ink can be applied to electrowetting display devices. Electrowetting is also called electrowetting, and the ink of the present invention is also suitable for electrowetting displays. The present invention also provides an electrowetting display, also referred to as an electrowetting display, comprising the above-mentioned ink.

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Abstract

The invention discloses a bisazo purple dye and its application. An oxyalkyl chain R2 is introduced into the structure of the bisazo purple dye, thus greatly raising affinity between the bisazo purple dye and a nonpolar solvent. The bisazo purple dye has high solubility in a nonpolar solvent, and interactive force between dye materials is inhibited due to introduction of the long carbon chain. Therefore, the bisazo purple dye is not easy to separate out by crystallization in a nonpolar solvent. By dissolving the dye in a nonpolar solvent, purple printing ink can be obtained, and there is no separation by crystallization after long-term standing of the printing ink at low temperature. The bisazo purple dye can be effectively applied in electrowetting display devices.

Description

technical field [0001] The invention relates to the field of electrowetting displays, in particular to a disazo violet dye and an application thereof. Background technique [0002] Electrowetting display technology (EFD, Electrofluidedisplay), also known as electrowetting display technology, is a display prototype based on the principle of electrowetting display first developed by Philips of the Netherlands in 2003. The display principle is to control the surface properties of the hydrophobic layer by changing the voltage, and change the contact angle of the ink layer on the hydrophobic layer: when no voltage is applied, the ink wets the insulating layer evenly to form a colored pixel; when the voltage is applied, The effect of the electric field changes the surface properties of the hydrophobic layer to change the interfacial tension between the three phases of ink-polar liquid-hydrophobic layer, and the ink is compressed to form transparent or substrate-colored pixels, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B31/14C09D11/037G02B26/02
Inventor 周国富邓勇罗伯特·安德鲁·海耶斯郭媛媛唐彪
Owner SHENZHEN GUOHUA OPTOELECTRONICS
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