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4-hydroxy-4'isopropoxydiphenyl sulfone temperature-sensitive developer dispersion liquid and transparent temperature-sensitive record material

A technology of propoxydiphenyl sulfone and heat-sensitive recording material, applied in the field of transparent heat-sensitive recording material, can solve the problems of large average particle size of dispersion, opacity, large haze, etc., and achieve satisfactory image quality and good transparency , the effect of high heat sensitivity

Active Publication Date: 2013-05-01
BAODING LUCKY FILM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The Chinese patent application number CN200580008385.5 discloses 4-hydroxyl-4, isopropoxydiphenyl sulfone color developer dispersion, wet pulverization method and thermosensitive recording medium. The patent scheme has the following defects: (1) dispersion The average particle size of the liquid is large, the dispersion liquid is unstable, and cannot meet the needs of industrial cycle production due to the growth of crystals during storage; (2) The heat-sensitive recording medium has low color density, large haze, and opaque

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] (1) Preparation of leuco dye microcapsules A

[0029] Mix 6 parts of ODB-2 (Shandong Ruikang Fine Chemical), 0.8 parts of GN-2 (Tokyo Chemical), 1 part of CK-16 (Wenzhou Longsheng), 0.8 parts of β-methylnaphthalene, 24 parts of Add ethyl acetate into the dissolving pot, stir, heat to dissolve, and when the temperature is lowered to 55°C, add 10 parts of xylylene diisocyanate and trimethylolpropane tri-addition polymer D-110N (Mitsui Chemicals, Japan ) and 3 parts of isophorone diisocyanate (Degussa, Germany), and stir evenly to obtain an oil phase.

[0030] Add 80 parts of PVA2488 polyvinyl alcohol aqueous solution with a concentration of 4.5%, and 6 parts of 7# surfactant (produced by China Lucky Film Group Co., Ltd.) into the dispersion pot, stir evenly, and obtain the water phase.

[0031] Slowly add the above oil phase into the water phase solution, and at the same time use high-speed shear stirring to disperse at a speed of 5600 rpm for 7 minutes to obtain an oil-...

Embodiment 1

[0041] 1. Preparation of developer dispersion

[0042] 64 parts of 4.5% PVA1788 polyvinyl alcohol aqueous solution, 35 parts of 4-hydroxyl-4 ， Add isopropoxydiphenyl sulfone (99.53% purity of Shouguang Fukang Pharmaceutical) into the reactor, then add 0.7 parts of 200 g / L aqueous solution of isopropyl naphthalenesulfonate sodium salt, stir for 1 hour, and then use SWZ50-1 A type sand mill (Chongqing Hongqi Chemical Machinery Co., Ltd.) circulates the sand to grind the particles to an average particle size of 0.40 microns, while the particle size distribution is 8%, and the content of the heat-sensitive color developer is 35%. Under the condition of 20±5°C, after 14 days of airtight storage, no crystallization was found under the microscope, and it was ready for use.

[0043] 2. Preparation of thermosensitive recording layer coating composition

[0044] In the reactor, add 25 parts of leuco dye microcapsules A, 25 parts of leuco dye microcapsules B, 20 parts of developer disp...

Embodiment 2

[0048] 1. Preparation of developer dispersion

[0049] 64 parts of 4.5% PVA1788 polyvinyl alcohol aqueous solution, 35 parts of 4-hydroxyl-4 ， Add isopropoxydiphenyl sulfone into the reaction kettle, stir, soak for 1 hour, and use a sand mill to circulate sand to grind the particles until the average particle size is 1.00±0.20 microns, then add 0.7 parts of isopropyl naphthalenesulfonate sodium salt 200 g / L aqueous solution, continue to sand mill until the average particle size of the particles is 0.40 microns, the particle size distribution is 13%, and the content of the heat-sensitive developer is 35%. Under the condition of 20±5°C, after 14 days of airtight storage, no crystallization was found under the microscope, and it was ready for use.

[0050] 2. Preparation of thermosensitive recording layer coating composition

[0051] In the reactor, add 25 parts of leuco dye microcapsules A, 25 parts of leuco dye microcapsules B, 20 parts of developer dispersion prepared by the...

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Abstract

The invention relates to a 4-hydroxy-4'isopropoxydiphenyl sulfone temperature-sensitive developer dispersion liquid and a transparent temperature-sensitive record material, the dispersion liquid can be obtained by performing wet type crushing on 4-hydroxy-4'isopropoxydiphenyl sulfone temperature-sensitive developer through existence of a dispersion protective agent, the dispersion protective agent selects from sodium naphthalenesulfonate, relative to 100 mass fraction of temperature-sensitive developer, the dispersion protective agent is 0.05-2 mass parts; the average particle size of the temperature-sensitive developer after dispersing is 0.2-0.8 micrometers, and the particle size distribution is less than 15%. The dispersion liquid has good stability, and can effectively solves the problem that the temperature-sensitive developer enables easy hydration effect generation to generate crystallization in the processes of grinding and storing, and the industrialization period production requirement can be satisfied; the temperature-sensitive record material has fine particles, high temperature-sensitive degree, low haze and good transparency, and the image quality can satisfy the medical diagnosis requirement.

Description

technical field [0001] The present invention relates to 4-hydroxyl-4 for thermosensitive recording materials ， Disclosed is an isopropoxy diphenyl sulfone thermosensitive developer dispersion and a transparent thermosensitive recording material prepared using the thermosensitive developer dispersion. Background technique [0002] Thermal recording materials are not only used as the output of fax machines, POS machines, and label printers because of their advantages such as flexible printing formats, high image quality, fast speed, low price, simple recording equipment, easy maintenance, and no noise in the recording process. Recording materials, and can also be used as CR, DR and other X-ray image diagnosis, magnetic resonance imaging (MRI), X-ray computer tomography (CT) and other medical equipment output recording materials, while also avoiding the traditional silver salt film The technology must use precious metal silver as a raw material and has the disadvantages of com...

Claims

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Application Information

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IPC IPC(8): B41M5/333
CPCB41M5/3336B41M5/3375
Inventor 赵亮范文兴任风荣栾湘梅江晓利
Owner BAODING LUCKY FILM
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