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Colourless fluorescent red printing ink and preparation method thereof

An ink and red glue technology, applied in the field of colorless fluorescent red offset printing ink and its preparation technology, can solve the problems of low product qualification rate, easy delamination, high production cost, and achieve high product qualification rate, good transfer effect, The effect of low cost

Inactive Publication Date: 2004-08-25
桑惠敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the red-emitting fluorescent materials used in existing inks have not yet reached the state of being fully excited due to ink components, and the fluorescent brightness is dim. However, the 254 fluorescent material itself is very expensive, resulting in high production costs, which are difficult for ordinary users to accept, so its promotion and use are subject to certain restrictions.
In addition, the 254 colorless fluorescent red offset printing ink prepared by the prior art is easy to delaminate, which directly affects the transfer printing effect, and its product qualification rate is relatively low in use, and the waste is serious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) Take the weight of each component according to the ratio of raw material components; (2) put 50 grams of super-grade rosin, 4 grams of polyethylene wax and 4 grams of xylene into the reactor, heat and stir until the rosin is completely dissolved; (3) 20 grams of soybean oil are gradually added in the above-mentioned reaction kettle, and the polymerization reaction is carried out under stirring at a temperature of 260 ° C; (4) After the reaction, 4 grams of grinding dispersants are added and mixed, and then 18 grams of 254 fluorescent pigments are added and mixed, and stirred until Mixing; (5) Transfer the above-mentioned mixture to a three-roller machine for grinding until the particle size of the ink is less than 20 microns to obtain a finished product.

Embodiment 2

[0015] (1) Take the weight of each component according to the ratio of raw material components; (2) put 36 grams of super-grade rosin, 2 grams of polyethylene wax and 2 grams of xylene into the reactor, heat and stir until the rosin is completely dissolved; (3) 36 grams of tung oil are gradually added in the above-mentioned reaction kettle, and the polymerization reaction is carried out under stirring at a temperature of 260 ° C; (4) after the reaction, 2 grams of grinding dispersants are added and mixed, and then 22 grams of 254 fluorescent pigments are added and mixed, and stirred until Mixing; (5) Transfer the above-mentioned mixture to a three-roller machine for grinding until the particle size of the ink is less than 20 microns to obtain a finished product.

Embodiment 3

[0017] (1) Take the weight of each component according to the ratio of raw material components; (2) put 43 grams of super-grade rosin, 3 grams of polyethylene wax and 3 grams of xylene into the reactor, heat and stir until the rosin is completely dissolved; (3) Gradually add 28 grams of soybean oil into the above-mentioned reactor, and stir at a temperature of 260° C. for polymerization; (4) After the reaction, add 3 grams of grinding dispersant and mix, then add 20 grams of 254 fluorescent pigments and mix, and stir until Mixing; (5) Transfer the above-mentioned mixture to a three-roller machine for grinding until the particle size of the ink is less than 20 microns to obtain a finished product.

[0018] The colorless fluorescent red offset printing ink prepared by the present invention has a viscosity of 2000-3000 second poises, a soft point of 150 degrees and is not transparent on paper as a result of testing.

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Abstract

The present invention relates to a colourless fluorescein red lithographic ink and its preparation process. Its composition includes (wt%) 36-50% of special grade rosin, 20-36% of oil and fat, 2-4% of polyethylene wax, 2-4% of xylene, 18-22% of 254 fluorescent pigment and 2-4% of grinding dispersing agent. Its preparation method includes the following steps: weighing all the components, placing the special grade rosin, polyethylene wax and xylene into reactor, heating and stirring to completely dissolve rosin, progressively adding the oil and fat into reactor, making them react at 260 deg.C, adding grinding dispersing agent and fluorescent pigment, uniformly mixing them, moving the mixture into three-roller machine and grinding until its grain size is less than 20 micron so as to obtain the invented product applicable for antifalse printing.

Description

technical field [0001] The invention relates to an offset printing ink, in particular to a colorless fluorescent red offset printing ink and a preparation process thereof. Background technique [0002] Currently used ultraviolet light excitation ink, because ultraviolet light excitation ink has obvious visual characteristics, is easy to identify and can effectively prevent counterfeiting by copying, photography and other means, so in the past ten years, it is usually used in tickets, trademarks and anti-counterfeiting marks superior. Ultraviolet light (254nm) is also called short-wave ultraviolet light. The fluorescent material excited by it is called 254 fluorescent material. The ink printed matter made of 254 fluorescent material can be stored for decades, and the fluorescence does not decay under sunlight, and it is heat-resistant. , Moisture-resistant, moisture-proof. Among the fluorescent inks, the fluorescent effect of colorless and red is the most popular one, becau...

Claims

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Application Information

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IPC IPC(8): C09D11/08
Inventor 桑惠敏朱海斌
Owner 桑惠敏
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