Prepn process of microcapsule containing Hansa yellow 100 electrophoresis liquid

A Hansa yellow and electrophoretic fluid technology, applied in the field of microcapsule preparation containing Hansa yellow 10G electrophoretic fluid, can solve the problems of scratch resistance, poor pressure performance, poor capsule wall strength, high mechanical strength, etc., and achieve high transparency , good geometric shape, excellent flexibility effect

Inactive Publication Date: 2006-05-17
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current general methods for preparing electronic ink microcapsules are: (1) in-situ polymerization [Loxley; Andrew (Allston, MA); Comiskey; Barrett (Cambridge, MA).US 6262833.2001], this method usually uses urea-formaldehyde resin package Sealed electrophoresis system, urea-formaldehyde resin microcapsule wall material has high mechanical strength, but poor flexibility, so the flexible electrophoresis made of this material shows poor scratch resistance and pressure performance; (2) Phase separation method[ Sadao Kanbe, Hideyuki Kawai, US 2004 / 0012106A1]
This method usually adopts gelatin-gum arabic system to encapsulate the electrophoresis system. The wall material of gelatin microcapsules is non-toxic, cheap, good in transparency and flexibility, but the strength of the capsule wall is poor, and it is easy to break after drying.

Method used

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  • Prepn process of microcapsule containing Hansa yellow 100 electrophoresis liquid

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015] Take 100g of toluene, add 0.5g of Hansa yellow 10G to it, add 0.1g of Span 80, add 100g of glass beads, grind at 150rpm for 1h, and then filter to remove the glass beads to obtain a stable and dispersed yellow electrophoretic suspension.

[0016] Mix 0.5g of yellow electrophoretic suspension and 0.005g of bisphenol A type epoxy resin E44 to form a uniform dispersion, take 1g of gelatin and 0.5g of gum arabic at 40°C to make aqueous solutions with a mass concentration of 1% respectively, and disperse the above Add the gelatin solution into the gum arabic solution to disperse for 1min, stir to obtain an o / w emulsion, add the prepared gelatin solution into the emulsion under stirring, and adjust the pH value of the system to 10% acetic acid solution at 40°C 4. Slowly lower the temperature to 0°C, add 2g of 5% glutaraldehyde aqueous solution dropwise to the above system to cross-link the microcapsule wall, continue the reaction for 0.5h, add 5g of 1% carboxymethyl The sodiu...

example 2

[0018] Take 100g of cyclohexane, add 1g of Hansa yellow 10G to it, add 0.3g of OP-10, add 100g of glass beads, grind at 300rpm for 4h, and then filter to remove the glass beads to obtain a stable and dispersed yellow electrophoretic suspension.

[0019] Mix 20g of yellow electrophoretic suspension and 0.5g of bisphenol A epoxy resin E51 to form a uniform dispersion, take 1g of gelatin and 1g of gum arabic at 60°C to prepare aqueous solutions with a mass concentration of 5%, and add the above dispersion to Disperse in the gum arabic solution for 15 minutes, stir to obtain an o / w emulsion, add the prepared gelatin solution into the emulsion under stirring, and adjust the pH value of the system to 4.5 with a mass concentration of 1% hydrochloric acid solution at 60°C. Slowly lower the temperature to 10°C, add 10 g of 5% glutaraldehyde aqueous solution dropwise to the above system to cross-link the microcapsule wall, continue the reaction for 1 hour, and add 6 g of 5% sodium carbox...

example 3

[0021] Take 100g of tetrachlorethylene, add 2g of Hansa yellow 10G to it, add 0.5g of didecyldimethylammonium bromide, add 100g of glass beads, grind at 500rpm for 8h, and then filter to remove the glass beads to obtain stable dispersion Yellow electrophoretic suspension.

[0022] Mix 40g of yellow electrophoretic suspension and 1g of cycloaliphatic epoxy resin ERR0300 to form a uniform dispersion, take 1g of gelatin and 2g of gum arabic at 70°C to make aqueous solutions with a mass concentration of 10%, and add the above dispersion to Arabica Disperse in the gelatin solution for 30 minutes, stir to obtain an o / w emulsion, add the prepared gelatin solution into the emulsion under stirring, adjust the pH value of the system to 5 with a mass concentration of 1% sulfuric acid solution at 70°C, and lower the temperature Slowly lower to 15°C, add 20g of 5% formaldehyde aqueous solution dropwise to the above system to cross-link the microcapsule wall, continue the reaction for 2h, a...

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Abstract

The present invention discloses the preparation process of microcapsule containing Hansa yellow 10G electrophoresis liquid, and belongs to the field of the preparation technology of electronic ink microcapsule. The preparation process includes: adding Hansa yellow 10G into solvent including toluene to compound dispersant solution and adding surfactant including Span-80 and grinding to prepare suspended electrophoresis liquid; compounding water solution of gelatin and Arabic gum separately; mixing the suspended electrophoresis liquid and epoxy resin to form homogeneous dispersant liquid, dispersing the dispersant liquid into water solution of Arabic gum, adding water solution of gelatin, dropping acid to regulating pH and to take re-condensation reaction, cooling, adding formaldehyde or glutaraldehyde for cross-linking solidification, adding CMCNa, dropping NaOH to regulate pH, and heating to react to obtain the microcapsule containing Hansa yellow 10G electrophoresis liquid.

Description

technical field [0001] The invention relates to a method for preparing microcapsules containing hansa yellow 10G electrophoretic fluid, which belongs to the preparation technology of electronic ink microcapsules. Background technique [0002] Electronic ink microcapsule technology is a technology that uses a film-forming material to coat a suspension of electrophoretic particles to form tiny capsules. An electric field is applied to the microcapsules, and the electrophoretic particles are electrophoresed in the capsules to achieve display [Barrett Comiskey, J.D.Albert, Hidekazu Yoshizawa & Joseph Jacobson.Nature 394(1998)253-255;], there have been a large number of patent literature reports at home and abroad [US 5930026.1999; WO 99 / 67678; Kobe Sadao, Chuanju Hideyuki, etc., JP 207328.2002; Zhao Xiaopeng, Wang Yuntao CN 1492275A, 2004 ]. The microcapsule electrophoretic display prepared by electronic ink microcapsule technology has the softness o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02G02F1/167
Inventor 冯亚青谢建宇李祥高王静李刚
Owner TIANJIN UNIV
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