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Thermochromic composition, thermochromic erasable neutral ink and pen core filled with the same

A thermochromic and neutral ink technology, applied in color-changing fluorescent materials, inks, ballpoint pens, etc., can solve the problem of limited organic compounds and achieve good ink output and fluctuation control

Inactive Publication Date: 2014-05-14
SHANGHAI M&G STATIONERY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Obviously, the organic compounds that can realize the above functions are quite limited.

Method used

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  • Thermochromic composition, thermochromic erasable neutral ink and pen core filled with the same
  • Thermochromic composition, thermochromic erasable neutral ink and pen core filled with the same
  • Thermochromic composition, thermochromic erasable neutral ink and pen core filled with the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Prepare a black thermochromic erasable neutral ink.

[0049] Weigh 1.0 parts of 2-phenylamino-3-methyl-6-dibutylaminofluorane (produced and sold by Wenzhou Longsheng Chemical Co., Ltd.), 1.0 parts of 2,2-bis(4-hydroxyphenyl)propane (Nanjing Sold by Zhonglian Chemical Co., Ltd., produced by Bayer, Germany) and 50.0 parts of undecanedioic acid bis(4-benzyloxy)phenylethyl ester, heated to melt and stirred evenly, kept warm for 0.5-1h and then cooled at room temperature The solid thermochromic composition can be obtained.

[0050] Methyl methacrylate (sold by Shanghai Baorui Chemical Co., Ltd., produced by Degussa Company of Germany) and styrene monomer (sold by Jiaozhou Futian Chemical Co., Ltd., produced by Daqing Petrochemical Company) were used in a mass ratio of 1:9, and a total of 5 part, mixed with 5 parts of the thermochromic solid obtained above; then the mixture was added to 30 parts of ethanol solution containing 0.2 part of stabilizer PVP (produced and sold by ...

Embodiment 2

[0054] Prepare a black thermochromic erasable neutral ink.

[0055] Weigh 1.0 parts of 2-phenylamino-3-methyl-6-dibutylaminofluorane (produced and sold by Wenzhou Longsheng Chemical Co., Ltd.), 2.0 parts of 2,2-bis(4-hydroxyphenyl)propane (Nanjing Sold by Zhonglian Chemical Co., Ltd., produced by Bayer, Germany) and 40.0 parts of bis(4-benzyloxy)phenylpropyl dodecanedioate, heated to melt and stirred evenly, kept warm for 0.5-1h and then cooled at room temperature The solid thermochromic composition can be obtained.

[0056] Methyl methacrylate (sold by Shanghai Baorui Chemical Co., Ltd., produced by Degussa Company of Germany) and styrene monomer (sold by Jiaozhou Futian Chemical Co., Ltd., produced by Daqing Petrochemical Company) were used in a mass ratio of 1:9, and a total of 5 part, mixed with 5 parts of the thermochromic solid obtained above; then the mixture was added to 30 parts of ethanol solution containing 0.2 part of stabilizer PVP (produced and sold by Shanghai ...

Embodiment 3

[0060] Prepare a black thermochromic erasable neutral ink.

[0061] Weigh 1.0 part of 3-diethylamino-7-(2′-chloroaniline) fluorane (produced and sold by Wenzhou Longsheng Chemical Co., Ltd.), 0.5 part of 4,4′,4”-methylenetriphenol (Bailingwei Sold by Technology Co., Ltd., produced by Tokyo Chemical Industry Co., Ltd.) and 60.0 parts of bis(4-benzyloxy)phenylethyl dedecanedioate, heated to melt and stirred evenly, kept warm for 0.5-1h, and then cooled at room temperature The thermochromic composition can be obtained as a solid.

[0062] Methyl methacrylate (sold by Shanghai Baorui Chemical Co., Ltd., produced by Degussa Company of Germany) and styrene monomer (sold by Jiaozhou Futian Chemical Co., Ltd., produced by Daqing Petrochemical Company) were used in a mass ratio of 1:9, and a total of 5 part, mixed with 5 parts of the thermochromic solid obtained above; then the mixture was added to 30 parts of ethanol solution containing 0.2 part of stabilizer PVP (produced and sold b...

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Abstract

The invention provides a thermochromic composition, a thermochromic microcapsule prepared by the thermochromic composition, thermochromic erasable neutral ink prepared by the thermochromic microcapsule, and a pen core filled with the thermochromic erasable neutral ink. The thermochromic composition comprises (1) an electron donating compound; (2) an electron accepting compound; and (3) an organic solvent. The thermochromic composition is characterized in that the organic solvent is diester formed by benzene ring-containing carboxylic acid and dihydric alcohol, or diester formed by dicarboxylic acid and benzene ring-containing fatty alcohol. A pen core can be assembled by the thermochromic erasable neutral ink of the invention combined with a specially-prepared erasable pen nib, which can realize functions of complete erasure of handwriting and repeated writing.

Description

technical field [0001] The invention relates to a thermochromic composition, a thermochromic microcapsule made from the thermochromic composition, a thermochromic erasable neutral ink made from the thermochromic microcapsule, and an assembled thermochromic erasable neutral ink Ink refills. Background technique [0002] Thermochromism is to change the color of the system by heating or cooling. Most of the existing thermochromic systems change their color reversibly, that is, the color of the system changes when it is raised (or lowered) to a certain temperature, and once the temperature drops below this temperature (or rises above this temperature), the system The color of the system will be restored immediately; or the color change of the system is completely irreversible. Once the color of the system changes due to temperature changes, it cannot be restored. None of the above-mentioned systems can be directly applied to erasable ink systems, because as erasable inks, the ...

Claims

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Application Information

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IPC IPC(8): C09K9/02C09D11/16B43K7/01
Inventor 陈湖雄陈义军丁云峰姚鹤忠
Owner SHANGHAI M&G STATIONERY INC
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