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Environmental protection type organic coumarin-base photoluminescence anti-counterfeiting pigment, environmental protection type organic coumarin-base photoluminescence anti-counterfeiting ink,and preparation methods thereof

A photoluminescence, coumarin-based technology, used in organic dyes, luminescent materials, inks, etc., can solve the problems of unenvironmental protection and human health, and achieve the effects of reducing damage, reducing volatilization, and anti-arc mechanical properties.

Active Publication Date: 2015-06-10
襄阳金飞环彩色包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is that the conventional organic light-emitting anti-counterfeiting ink is not environmentally friendly and harmful to the human body due to the presence of organic solvents and organic additives in the preparation process. In order to solve this technical problem, the present invention provides a solar photoluminescent Environmentally friendly organic pigments, and compounding the pigments with self-made water-based binders to prepare environmentally friendly photoluminescent anti-counterfeiting inks, and provide a preparation method for the environmentally friendly photoluminescent anti-counterfeiting inks

Method used

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  • Environmental protection type organic coumarin-base photoluminescence anti-counterfeiting pigment, environmental protection type organic coumarin-base photoluminescence anti-counterfeiting ink,and preparation methods thereof
  • Environmental protection type organic coumarin-base photoluminescence anti-counterfeiting pigment, environmental protection type organic coumarin-base photoluminescence anti-counterfeiting ink,and preparation methods thereof
  • Environmental protection type organic coumarin-base photoluminescence anti-counterfeiting pigment, environmental protection type organic coumarin-base photoluminescence anti-counterfeiting ink,and preparation methods thereof

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preparation example Construction

[0064] In one embodiment of the present invention, the preparation method of anti-counterfeiting ink of the present invention, it comprises the following steps:

[0065] 1) Add formaldehyde solution and triethanolamine to the reactor to adjust the pH value to 8-9;

[0066] 2) Add melamine to the mixture in step 1), adjust the temperature to 75-85°C (preferably 80°C), then add an alcohol solvent (preferably methanol) to react to obtain a colorless and transparent melamine-formaldehyde resin solution;

[0067] 3) Add coumarin-based dyes (preferably yellow dyes) and anhydrous acetic acid to the melamine-formaldehyde resin solution obtained in step 2), adjust the pH value of the reaction system to 4.0-6.0, and perform cross-linking and curing to obtain cross-linking and curing colored resin dye mixture;

[0068] 4) drying, pulverizing and sieving the product of step 3) to obtain the organic luminescent pigment of the present invention;

[0069] Then, 5) adding a water-based bind...

Embodiment 1

[0076] Preparation of Photoluminescent Pigments

[0077] 1) Add 108g of 37% formaldehyde solution into a clean four-port reactor equipped with a reflux condenser, thermometer and stirring device, and add 0.02g of triethanolamine to the four-port reactor to adjust the pH value of the solution to 8.5 , during this process, the stirring device is used to open and maintain the mechanical stirring state;

[0078] 2) Next, add 25g of melamine to the four-port reactor and stir for 10 minutes to disperse the melamine evenly in the formaldehyde aqueous solution, then put the reactor into a heated constant temperature water bath, make the temperature in the reactor 80°C and Stir and mix the reaction, add 29.3g methanol after the solution becomes transparent, and react for 30 minutes to obtain a colorless transparent liquid;

[0079] 3) Add 1.6g of yellow 82 dye to the colorless transparent liquid system obtained above, stir and mix well, then add 23g of anhydrous acetic acid dropwise...

Embodiment 2

[0129] Preparation of Photoluminescent Pigments

[0130] 1) Add 90g of 37% formaldehyde solution into a clean four-port reactor equipped with a reflux condenser, thermometer and stirring device, and add 0.01g of triethanolamine to the four-port reactor to adjust the pH value of the solution to 8 , during this process, the stirring device is used to open and maintain the mechanical stirring state;

[0131] 2) Next, add 20g of melamine to the four-port reactor and stir for 15 minutes to disperse the melamine evenly in the aqueous formaldehyde solution, then put the reactor into a heated constant temperature water bath, make the temperature in the reactor 75°C and Stir and mix the reaction, add 25g methanol after the solution becomes transparent, and react for 30 minutes to obtain a colorless transparent liquid;

[0132] 3) Add 1.0g of yellow 82 dye to the colorless transparent liquid system obtained above, stir and mix well, then add 20g of anhydrous acetic acid dropwise with...

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Abstract

The present invention relates to an environmental protection type organic coumarin-base photoluminescence anti-counterfeiting pigment, an environmental protection type organic coumarin-base photoluminescence anti-counterfeiting ink, and preparation methods of the environmental protection type organic coumarin-base photoluminescence anti-counterfeiting pigment and the environmental protection type organic coumarin-base photoluminescence anti-counterfeiting ink. The photoluminescence anti-counterfeiting pigment contains 60-70 parts by weight of a cross-linked melamine-formaldehyde resin, and 1.0-2.0 parts by weight of a yellow dye. The method for preparing the photoluminescence anti-counterfeiting pigment and the photoluminescence anti-counterfeiting ink comprises: adding a formaldehyde solution and triethanolamine to a reactor, and adjusting the pH value to 8-9; adding melamine to the obtained mixture, adjusting the temperature to 75-85 DEG C, and adding an alcohol solvent to obtain a colorless and transparent melamine-formaldehyde resin solution; adding a coumarin-base dye and acetic anhydride, adjusting the pH value of the reaction system to 4.0-6.0, and carrying out cross-linking curing to obtain a cross-linked and cured colored resin dye mixture; drying, crushing, and screening to obtain the organic luminescence pigment; and adding the pigment to an aqueous binder resin to obtain the luminescence anti-counterfeiting ink. The anti-counterfeiting ink has characteristics of no polluting, fire retardation, no toxicity, no odor and the like, wherein destruction of the printing industry on the ecological environment can be reduced.

Description

technical field [0001] The invention belongs to the technical field of environment-friendly anti-counterfeiting inks, and relates to an environment-friendly organic coumarin-based photoluminescence anti-counterfeiting pigment, ink and their preparation method. Background technique [0002] With the development of social economy, the market is flooded with various fake and shoddy products, especially brand-name tobacco and alcohol. my country's tobacco losses due to counterfeiting, counterfeiting, and smuggling are as many as several billion yuan every year, and market supervision is difficult. At present, the counterfeit products of packaging and printing in the world are increasing at a rate of 20% per year, while the anti-counterfeiting products are only growing at about 8% per year, and there are few anti-counterfeiting technologies with high technical content. The current situation is still very grim. Therefore, in addition to In addition to strengthening supervision, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06C09B67/20C09D11/037C09D11/102
Inventor 艾萍方长青周星何顺昌
Owner 襄阳金飞环彩色包装有限公司
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