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Yellow electronic ink microcapsule preparation method

A yellow electronic and microcapsule technology, applied in inks, household appliances, applications, etc., can solve the problems of insufficient capsule strength, poor capsule transparency, long reaction time, etc., and achieve good environmental stability, good geometry, and easy availability of raw materials. Effect

Inactive Publication Date: 2006-02-08
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current general method for preparing electronic ink microcapsules has: (1) in-situ polymerization [Loxley; Andrew (Allston, MA); Comiskey; Barrett (Cambridge, MA).US 6262833.2001], such as urea-formaldehyde resin, melamine-formaldehyde resin , it is necessary to prepare the prepolymer first and then form a capsule, the process is more complicated, and the capsule has poor transparency and lacks toughness; (2) phase separation method [Sadao Kanbe, Hideyuki Kawai, US 2004 / 0012106A1], such as gelatin-gum arabic complex coagulation method, polyvinyl alcohol single coacervation method, need to adjust the temperature, pH value and electrolyte concentration, the process is more complicated, and the reaction time is longer, the strength of the prepared capsule is insufficient, and it is easy to deform and rupture after drying

Method used

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  • Yellow electronic ink microcapsule preparation method
  • Yellow electronic ink microcapsule preparation method

Examples

Experimental program
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Effect test

example 1

[0014] Take 20mL of tetrachlorethylene, add 0.1g of Hansa yellow 10G to it, add 0.1g of OP-10, 0.1g of didecyldimethylammonium bromide, add 30g of glass beads, grind for 4 hours at 300rpm, and then Remove the glass beads by filtration to obtain a stable and dispersed yellow electrophoresis solution.

[0015] Take 4mL of the above-mentioned yellow electrophoretic solution, add 0.23g of terephthaloyl chloride into it, and stir to dissolve it completely; add 40mL of distilled water to a 100mL three-neck flask, add 2.04g of diethylenetriamine, stabilize the stirring speed at 800rpm, add The electrophoretic solution containing terephthaloyl chloride was reacted for 1 minute, the stirring rate was reduced to 400 rpm, and the stirring was stopped after 10 minutes, and the yellow electronic ink microcapsules were obtained by suction filtration, washing with deionized water, and drying at room temperature.

example 2

[0017] Take 20mL tetrachlorethylene, add 0.2g Hansa yellow 10G to it, add 0.05g OP-10, 0.05g didecyldimethylammonium bromide, add 20g glass beads, grind for 4 hours at 300rpm, then Remove the glass beads by filtration to obtain a stable and dispersed yellow electrophoresis solution.

[0018] Take 4mL of the above-mentioned yellow electrophoretic solution, add 0.32g of toluene diisocyanate into it; add 40mL of distilled water to a 100mL three-necked flask, quickly add the above-mentioned electrophoretic solution containing toluene diisocyanate, start stirring to stabilize the speed at 800rpm for a period of time, then add 1.44 g polyvinyl alcohol 6000 10mL aqueous solution, after reacting for 10 minutes, reduce the stirring rate to 400rpm, stop stirring after 30 minutes, filter with suction, wash with deionized water, and dry at room temperature to obtain yellow electronic ink microcapsules.

example 3

[0020] Take 20mL of tetrachlorethylene, add 0.1g of Hansa yellow 10G to it, add 0.1g of OP-10, 0.1g of didecyldimethylammonium bromide, add 30g of glass beads, grind for 4 hours at 300rpm, and then Remove the glass beads by filtration to obtain a stable and dispersed yellow electrophoresis solution.

[0021] Take 4mL of the above-mentioned yellow electrophoretic solution, add 0.32g of toluene diisocyanate into it; add 40mL of distilled water to a 100mL three-necked flask, quickly add the above-mentioned electrophoretic solution containing toluene diisocyanate, start stirring to stabilize the speed at 800rpm for a period of time, then add 1.46 g triethylenetetramine 10mL aqueous solution, after reacting for 5 minutes, reduce the stirring rate to 400rpm, stop stirring after 15 minutes, filter with suction, wash with deionized water, and dry at room temperature to obtain yellow electronic ink microcapsules.

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Abstract

The invention discloses a process for preparing yellow electronic ink microcapsule comprising electrophoresis liquid preparation, which consists of charging electrophoresis particles and dispersing agent into organic solvents including perchloroethylene, and microcapsule preparation, which consists of charging the electrophoresis liquid into p-phthaloyl chloride oil phase monomer, stirring and dispersing into water, reacting with diethylenetriamine aqueous phase monomer, thus obtaining electronic ink microcapsule of polyamide wall material. When the oil phase monomer is toluene diisocyanate, and the aqueous phase monomer is polyvinyl alcohol, microcapsule with polyurethane wall material can be achieved. When the oil phase monomer is toluene diisocyanate, and and the aqueous phase monomer is triethylene tetraamine, microcapsule with polyurea wall material can be achieved.

Description

technical field [0001] The invention relates to a method for preparing yellow electronic ink microcapsules, 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 electrophoresis in the capsules to achieve display [Barrett Comiskey, J.D.Albert, Hidekazu Yoshizawa&Joseph Jacobson.Nature 394(1998)253-255;], a large number of patent literature reports at home and abroad [US 5930026.1999; WO 99 / 67678; Kobe Sadao, Kawaju Hideyuki, etc., JP 207328.2002; Zhao Xiaopeng, Wang Yuntao CN 1492275A, 2004], But mostly black and white. The microcapsule electrophoretic display prepared by electronic ink microcapsule technology has the softness of paper, does not need...

Claims

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Application Information

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IPC IPC(8): C09D11/00
Inventor 李刚冯亚青李祥高王静谢建宇
Owner TIANJIN UNIV
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