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A kind of preparation method of temperature-controlled color-changing ink

A temperature-controlled discoloration and ink technology, applied in the field of fine chemicals, can solve problems such as high toxicity and adverse effects, and achieve the effects of improving internal heat resistance, improving heat resistance and increasing use time.

Active Publication Date: 2020-09-11
广东泰金智能包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, substances such as diallyl phthalate and bisphenol A have high toxicity and certain environmental risks. Excessive use will have adverse effects on the human body and the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Weigh crystal violet lactone, stearic acid and myristyl alcohol successively according to the molar ratio of 1:2:30, add them into the beaker and dissolve them with choline chloride-ethylene glycol eutectic reagent, then heat up to 70 After stirring and reacting for 2 hours at ℃, after adding ethanol, the eutectic reagent was recovered, and the ethanol phase was evaporated to dryness under reduced pressure, washed with water for 3 times, and then dried to obtain a heat-sensitive color-changing material; melamine and formaldehyde were mixed in a molar ratio of 1:3 and used After adjusting the pH value of the triethanolamine aqueous solution to 8-9, heat it to 60°C, stir and react for 2 hours until the melamine is completely dissolved, dilute it with water of the same volume as formaldehyde, and continue the reaction to obtain an aqueous solution of the melamine resin prepolymer. Drop the color-changing material solution into Tween 80 water, ultrasonically emulsify at 400W...

Embodiment 2

[0021] Weigh crystal violet lactone, stearic acid and myristyl alcohol in sequence according to the molar ratio of 1:2:30, put them into a beaker and dissolve them with choline chloride-glycerin eutectic reagent, heat up to 75°C with a water bath After stirring and reacting for 1.5 hours, ethanol was added, and the eutectic reagent was recovered, and the ethanol phase was evaporated to dryness under reduced pressure, washed with water twice, and then dried to obtain a heat-sensitive color-changing material; melamine and formaldehyde were mixed in a molar ratio of 1:3 and used three Adjust the pH value of the ethanolamine aqueous solution to 8-9, heat to 70°C, and stir for 1.5 hours until the melamine is completely dissolved, dilute it with water of the same volume as formaldehyde, and continue the reaction to obtain an aqueous solution of the melamine resin prepolymer. Drop the color-changing material solution into Tween 80 water, ultrasonically emulsify at 450W for 15 minutes,...

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PUM

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Abstract

The invention discloses a preparation method of temperature-controlled color-variable ink. The preparation method of the ink comprises the following steps: synthesizing a novel sensitive color-variable material by utilizing an eutectic reagent as a solvent and adopting crystal violet lactone and stearic acid as a raw material, preparing a thermosensitive material into a microcapsule by utilizing a microcapsulation technology, preparing heat-resistant resin by utilizing epoxy resin and organic silicon, and finally mixing the thermosensitive microcapsule, resin, pigments, resin, catalyst, a drier and an antioxidant to obtain the htermosensitive color-variable ink. The method for preparing the thermosensitive material is green and environment-friendly; and the prepared ink has thermoesensitive stability, good heat resistance and can be rapidly dried. The obtained ink has good anti-counterfeit printing effect.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, and more specifically, the invention relates to a method for preparing temperature-controlled color-changing ink. Background technique [0002] With the rise of digital printing, digital anti-counterfeiting technology is also constantly developing. Advanced anti-counterfeiting technology has played a good role in regulating the fierce competition in the market. An important branch of these anti-counterfeiting technologies is anti-counterfeiting printing ink technology, which involves many important disciplines, including chemistry, optics, materials science, printing technology, computer color Technology, etc., is the most researched part in the field of anti-counterfeiting technology at home and abroad. Color-changing ink has good anti-counterfeiting effect in anti-counterfeiting packaging printing, and because of its convenient use, it has a wide application prospect in anti-counterfeit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/50C09D11/06C09D11/102C09D11/103C09D11/03C09D11/033B01J13/14C08G77/42
CPCB01J13/14C08G77/42C09D11/03C09D11/033C09D11/06C09D11/102C09D11/103C09D11/50Y02P20/582
Inventor 唐雪平杜欣
Owner 广东泰金智能包装有限公司
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