Preparation method of novel thermochromic printing ink

A thermochromic ink technology, applied in inks, household utensils, applications, etc., can solve the problems of thermochromic inks that do not meet environmental protection requirements, poor adhesion and friction resistance, and need to improve discoloration sensitivity, so as to achieve easy implementation , good hiding power and high sensitivity to discoloration

Inactive Publication Date: 2015-04-08
SUZHOU ZHONGYA INK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current technology, most thermochromic inks are prepared by using inorganic or liquid crystal reversible thermochromic pigments. Although they have a certain thermochromic performance, the sensitivity of color change needs to be improved, and the stability is average; at the same time, due to the The defects in the selection of materials and the preparation process make the prepared thermochromic ink not meet the requirements of environmental protection, the production cost is high, and the adhesion and friction resistance are poor.

Method used

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  • Preparation method of novel thermochromic printing ink

Examples

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Effect test

Embodiment 1

[0016] The specific preparation method of the novel thermochromic ink mentioned here is as follows:

[0017] a) Preparation of materials, the main components of the ink and their parts ratio are: 53 parts of linking material, 1.5 parts of crosslinking agent, 40 parts of heat-absorbing and reversible discoloration pigment, 5.5 parts of defoaming agent; polyvinyl alcohol is selected as linking material Resin powder, its polymerization degree is 1700, alcoholysis degree is 88%; Cross-linking agent selects boric acid solution; 7um;

[0018] b) Prepare polyvinyl alcohol aqueous solution, the preparation process is as follows: First, add polyvinyl alcohol resin powder and deionized water to the mixing tank according to the mass percentage of 1:10, seal it and place it for 48 hours to fully swell the polyvinyl alcohol particles Then, heat the mixing tank to 90°C, control the speed at 200r / min, and stir evenly for 2 hours to obtain a uniform sol-like material; finally, slowly cool th...

Embodiment 2

[0023] The specific preparation method of the novel thermochromic ink mentioned here is as follows:

[0024] a) Preparation of materials, the main components of the ink and their parts ratio are: 52 parts of linking material, 2 parts of crosslinking agent, 41 parts of thermal achromatic reversible color pigment, 5 parts of defoaming agent; the linking material is polyvinyl alcohol Resin powder, its polymerization degree is 1700, alcoholysis degree is 88%; Cross-linking agent selects boric acid solution; 7um;

[0025] b) Prepare polyvinyl alcohol aqueous solution, the preparation process is as follows: First, add polyvinyl alcohol resin powder and deionized water to the mixing tank according to the mass percentage of 1:10, seal it and place it for 50 hours to fully swell the polyvinyl alcohol particles Then, heat the mixing tank to 85°C, control the speed at 220r / min, and stir evenly for 1.5 hours to obtain a uniform sol-like material; finally, slowly cool the material in the ...

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Abstract

The invention provides a preparation method of a novel thermochromic printing ink. The preparation method comprises following steps: a) material preparation; b) preparation of a polyvinyl alcohol aqueous solution; c) crosslinking modification processing; d) preparation of the thermochromic printing ink; and e) finished product postprocessing. The invention discloses the preparation method of the novel thermochromic printing ink. Procedures of the preparation method are reasonable; operation is convenient; cost is moderate; and the prepared novel thermochromic printing ink possesses excellent covering performance and wear resistance, is brilliant in color and is high in color changing sensitivity, and is especially suitable to be used for fields such as food anti-counterfeit labels and temperature-sensitive packaging materials.

Description

technical field [0001] The invention relates to a method for preparing an ink, in particular to a method for preparing a novel thermochromic ink, and belongs to the technical field of inks. Background technique [0002] Ink is an important material for printing. It expresses patterns and characters on the substrate through printing. Ink is generally composed of pigments, binders, solvents and additives, etc. These components are evenly mixed and rolled repeatedly to form a viscous colloidal fluid. Ink is widely used in various printings such as books, periodicals, packaging and decoration, and architectural decoration. With the increase of social demand, the variety and output of ink have also expanded and increased accordingly. Thermochromic ink is a kind of ink with thermochromic properties, which can change color rapidly with the change of ambient temperature, so that the colored object has a dynamically changing color effect, so it is widely used in food anti-counterfei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/50C09D11/106C09D11/037
CPCC09D11/50C09D11/037C09D11/106
Inventor 张东明
Owner SUZHOU ZHONGYA INK
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