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)

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0013] Example 1

[0014] Take 20mL tetrachloroethylene, add 0.1g Hansa Yellow 10G to it, add 0.1g OP-10, 0.1g didecyl dimethyl ammonium bromide, add 30g glass beads, grind at 300rpm for 4 hours, then The glass beads are removed by filtration to obtain a stably dispersed yellow electrophoresis solution.

[0015] Take 4mL of the above yellow electrophoresis solution, add 0.23g terephthaloyl chloride to it, stir to completely dissolve it; add 40mL distilled water to a 100mL three-necked flask, add 2.04g diethylenetriamine, stabilize the stirring rate at 800rpm, add For the electrophoresis solution containing terephthaloyl chloride, after reacting for 1 minute, reduce the stirring rate to 400 rpm, stop stirring after 10 minutes, suction filtration, wash with deionized water, and dry at room temperature to obtain yellow electronic ink microcapsules.

Example Embodiment

[0016] Example 2

[0017] Take 20mL tetrachloroethylene, add 0.2g Hansa Yellow 10G to it, add 0.05g OP-10, 0.05g didecyldimethylammonium bromide, add 20g glass beads, grind at 300rpm for 4 hours, then The glass beads are removed by filtration to obtain a stably dispersed yellow electrophoresis solution.

[0018] Take 4mL of the above yellow electrophoresis solution, add 0.32g of toluene diisocyanate into it; add 40mL of distilled water to a 100mL three-necked flask, quickly add the above electrophoresis 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 in 10 mL aqueous solution, after reacting for 10 minutes, reduce the stirring rate to 400 rpm, stop stirring after 30 minutes, suction filter, wash with deionized water, and dry at room temperature to obtain yellow electronic ink microcapsules.

Example Embodiment

[0019] Example 3

[0020] Take 20mL tetrachloroethylene, add 0.1g Hansa Yellow 10G to it, add 0.1g OP-10, 0.1g didecyl dimethyl ammonium bromide, add 30g glass beads, grind at 300rpm for 4 hours, then The glass beads are removed by filtration to obtain a stably dispersed yellow electrophoresis solution.

[0021] Take 4mL of the above yellow electrophoresis solution, add 0.32g of toluene diisocyanate into it; add 40mL of distilled water to a 100mL three-necked flask, quickly add the above electrophoresis solution containing toluene diisocyanate, start stirring to stabilize the speed at 800rpm for a period of time, then add 1.46 g triethylenetetramine in 10 mL aqueous solution, after reacting for 5 minutes, reduce the stirring rate to 400 rpm, stop stirring after 15 minutes, suction filtration, 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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