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Heat-sensitive microcapsule color development material and preparation method thereof

A microcapsule, heat-sensitive technology, applied in reproduction/marking method, temperature recording method, printing and other directions, can solve the problems of low color density, affecting the application in the field of medical recording, unable to meet the requirements of medical recording materials, etc. High, conducive to industrialization, excellent black effect

Inactive Publication Date: 2020-08-04
潍坊恒彩数码影像材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The existing heat-sensitive microcapsule material achieves the color effect through the interaction between the dye precursor and the chromogen, but the color effect achieved by the currently used dye precursor and chromogen cannot meet the requirements for the use of medical recording materials , specifically manifested in the low color density when printing black images, and the printed images appear red under light, which affects the application in the field of medical records

Method used

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  • Heat-sensitive microcapsule color development material and preparation method thereof

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preparation example Construction

[0050] The present invention also provides a preparation method of sensitive microcapsule chromogenic material, specifically comprising the following steps:

[0051] S1 Preparation of Dye Precursor Microcapsules

[0052] S11 Weigh the dye precursor, cyclohexanone and ethyl acetate according to the above-mentioned heat-sensitive microcapsule coloring material, mix and stir, and heat to 70-90°C to dissolve to obtain a dye mixture;

[0053] S12 Cool the dye mixture to 15-30°C, add xylylene diisocyanate and stir to obtain an oil phase mixture; the mass ratio of dye mixture to xylylene diisocyanate is (3-20):1, stir The rotating speed is 300~1200rpm, and the time is 1~5min;

[0054] S13 Add a surfactant to the polyvinyl alcohol aqueous solution and stir to obtain an aqueous phase mixture; wherein the concentration of the polyvinyl alcohol aqueous solution is 2 to 10%, the degree of alcoholysis is 88%, and the average degree of polymerization is 2245. The polyvinyl alcohol aqueous ...

Embodiment 1

[0062] The preparation method of dye precursor microcapsule A specifically comprises the steps:

[0063] Add 15g of S205, 5g of ODB-2, 10g of RED-3, 5g of GN-2, 2g of ethyl acetoacetate and 160g of ethyl acetate into a 300ml beaker, stir, heat to dissolve, and when cooled to room temperature, add 80g of D110-N, stirred to obtain an oil phase mixture.

[0064] In a 1000ml container, add 400g of polyvinyl alcohol aqueous solution with a concentration of 5%, an alcoholysis degree of 88%, and an average polymerization degree of 2245, and add 40g of OP10 and stir to obtain an aqueous phase.

[0065] The oil phase mixture obtained above was slowly added to the water phase solution, and dispersed at a speed of 6000 rpm for 15 min using high-speed shear stirring to obtain an oil emulsion dispersion with an average particle size of 0.8 μm. Adding 400g of polyvinyl alcohol aqueous solution with a concentration of 3% and an alcoholysis degree of 88% and an average degree of polymerizati...

Embodiment 2

[0067] The preparation method of dye precursor microcapsule B specifically comprises the steps:

[0068] Add 16g of S205, 4g of ODB-2, 10g of RED-3, 5g of GN-2, 4g of ethyl acetoacetate and 130g of ethyl acetate into a 300ml beaker, stir, heat to dissolve, when cooled to room temperature, add 80g of D110-N, stirred to obtain an oil phase mixture.

[0069] In a 1000ml container, add 400g of polyvinyl alcohol aqueous solution with a concentration of 5%, an alcoholysis degree of 88%, and an average polymerization degree of 2245, and add 40g of OP10 and stir to obtain an aqueous phase.

[0070] The oil phase mixture obtained above was slowly added to the water phase solution, and dispersed at a speed of 6000 rpm for 15 min using high-speed shear stirring to obtain an oil emulsion dispersion with an average particle size of 0.8 μm. Adding 400g of polyvinyl alcohol aqueous solution with a concentration of 3% and an alcoholysis degree of 88% and an average degree of polymerization o...

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Abstract

The invention discloses a heat-sensitive microcapsule color development material which specifically comprises the following components: a dye precursor microcapsule, a color developer, a surfactant and polyvinyl alcohol. The dye precursor microcapsule comprises a capsule wall and a capsule core wrapped by the capsule wall, the capsule wall is made from polyurea or polyurethane, and the capsule core comprises a dye precursor and a solvent; and the dye precursor include S205, ODB-2, GN-2 and RED-3, and the solvent includes ethyl acetoacetate and ethyl acetate. The novel dye precursor is adoptedand matched with the color developer, so that the color developing density can be improved, the printed black effect is pure, and the material can be used as a medical recording material.

Description

technical field [0001] The invention relates to the technical field of information recording materials, and more specifically relates to a heat-sensitive microcapsule material and a preparation method thereof. Background technique [0002] Information recording and reproduction materials are an indispensable tool in human study, life and work. With the rapid development of information technology, information in the form of pictures, text, etc. needs to be recorded, preserved or reproduced, and people put forward higher requirements for information recording and reproduction materials. At present, information recording and reproduction materials mainly include silver salt information recording materials and heat-sensitive information recording materials. [0003] Among them, the silver salt information recording material is an efficient optical information recording material, which integrates the reception, storage and reproduction of optical information, and is widely used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/28B41M5/30B41M5/333B41M5/337
CPCB41M5/28B41M5/30B41M5/3336B41M5/3372B41M5/3375
Inventor 宫新建王永昭耿鹏飞汪怀远吴锦荣冯宁王倩陈永伟
Owner 潍坊恒彩数码影像材料有限公司
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