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Microcapsule temperature sensitive erasable neutral ink and preparation method thereof

A neutral ink, microcapsule technology, used in ink, printing, ballpoint pens, etc.

Inactive Publication Date: 2015-09-09
LOTUS STATIONERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The second purpose of the present invention is to obtain a preparation method of temperature-sensitive erasable ink that can solve the existing writing problems, and at the same time meet the user's requirements for easily erasing writing errors, while keeping the document clean and beautiful

Method used

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  • Microcapsule temperature sensitive erasable neutral ink and preparation method thereof
  • Microcapsule temperature sensitive erasable neutral ink and preparation method thereof
  • Microcapsule temperature sensitive erasable neutral ink and preparation method thereof

Examples

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Effect test

preparation example Construction

[0048] A second aspect of the present invention provides a method for preparing the microcapsule temperature-sensitive erasable neutral ink according to the present invention, which includes the following steps:

[0049] providing the various components of the invention;

[0050] The components are mixed and stirred until they are evenly mixed, filtered and defoamed to obtain the microcapsule temperature-sensitive erasable neutral ink.

[0051]In a specific embodiment of the present invention, the 35-75 parts by weight of deionized water, the dispersant of 5-15 parts by weight, the moisturizing agent of 1-10 parts by weight, the foam inhibitor of 0.05-1.0 parts by weight Add the foaming agent into the dispersing container, add 25-35 parts by weight of the temperature-sensitive microcapsule pigment while stirring, and continue stirring until the pigment is evenly dispersed. Continue to add 0.1-1.0 parts by weight of lubricant and 0.5-5 parts by weight of rheological additives ...

Embodiment approach

[0054] A kind of microcapsule thermosensitive erasable neutral ink, its composition is

[0055]

[0056] The microcapsule pigments are irreversible thermal achromatic microcapsule pigments, reversible thermal achromatic microcapsule pigments,

[0057] Irreversible thermal achromatic pigments are mainly due to the thermal decomposition of materials to produce substances such as ammonia, carbon dioxide, and water, as well as sublimation, melting, compound reactions, and redox reactions that cause color changes. The color change temperature is generally higher. Preferably, a reversible thermally decolorized microcapsule pigment with a decolorizing temperature of 45-75° C. is used, which can be obtained through preparation or purchase. The interior of the reversible thermochromic microcapsule pigment is generally composed of 4 parts: (1) the organic matter that provides the thermochromic base, that is, the chromogenic agent; (2) the organic compound that causes thermal discolor...

Embodiment 1

[0068] First add 60.65g of deionized water, 9g of polyacrylic acid sodium salt (dispersant), 4g of 1.2-hexanediol (humectant), and 0.05g of polysiloxane emulsion (foam suppressing and defoaming agent) into the paddle-type vacuum degasser. Bubble dispersion tank, slowly add 25g of temperature-sensitive microcapsule pigment (decolorization temperature is 45°C) under stirring, stir for 30min, continue to add 0.3g of high molecular weight polydimethylsiloxane (lubricant) and 1g of Lithium-based montmorillonite clay (rheological additive), added in 3 times, stirred while adding until uniformly mixed, vacuum defoaming and then left to stand for one day to obtain microcapsule temperature-sensitive erasable neutral ink.

[0069] The writing performance and erasability of the obtained product were evaluated as "good", and the shear thinning index was 2.5. (The judging mode is referring to the performance embodiment, and the following embodiments are the same).

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Abstract

The invention provides a microcapsule temperature sensitive erasable neutral ink, which comprises the following components by weight: 35-75 parts of deionized water; 5-15 parts of a dispersing agent; 1-10 parts of a moisturizing agent; 0.05-1 part of a foam inhibition and defoaming agent; 25-35 parts of a temperature sensitive microcapsule pigment; 0.1-1 part of a lubricant; and 0.5-5 parts of a rheological additive. Specifically, the dispersing agent is one or more of polyacrylic acid sodium salt, polyacrylic acid potassium salt, polyacrylic acid ammonium salt, and polyol fatty acid ester. The foam inhibition and defoaming agent is one or more of a polysiloxane emulsion, polyol, polyol ether, and a wax dispersion emulsion.

Description

technical field [0001] The invention relates to an ink and a preparation method thereof, in particular to a microcapsule erasable neutral ink and a preparation method thereof. Background technique [0002] When writing with neutral ink, writing mistakes are inevitable in daily life. In order to correct mistakes, common methods include scratching out rewriting, covering with correction fluid, scraping off writing with a knife, and sticking off writing with tape. These methods often affect the appearance of writing, and the latter two methods are more likely to cause damage to the paper and are difficult to operate. The development of temperature-sensitive erasable neutral ink can meet the requirements of users to easily erase writing errors, while keeping documents neat and beautiful. [0003] Temperature-sensitive erasable ink is a neutral ink prepared by using microcapsule thermally induced color-eliminating pigments as colorants. By using rubber or other resins, rubber an...

Claims

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Application Information

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IPC IPC(8): C09D11/50C09D11/17B43K7/00
CPCC09D11/50B43K7/00C09D11/17
Inventor 高旭东周炜黄小喜
Owner LOTUS STATIONERY
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