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Engraving gravure ink resistant to saturated sodium sulfide and preparation method thereof

A gravure printing ink and sodium sulfide technology, applied in ink, printing plate preparation, printing and other directions, can solve problems such as poor printing adaptability, and achieve enhanced first-line anti-counterfeiting function, good resistance to saturated sodium sulfide, and good physical and chemical resistance. Effect

Active Publication Date: 2020-02-14
CHINA BANKNOTE INK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing engraving gravure ink is not resistant to saturated sodium sulfide, and the printing adaptability is not good

Method used

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  • Engraving gravure ink resistant to saturated sodium sulfide and preparation method thereof
  • Engraving gravure ink resistant to saturated sodium sulfide and preparation method thereof
  • Engraving gravure ink resistant to saturated sodium sulfide and preparation method thereof

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0059] The preparation method of the aforementioned engraving gravure ink resistant to saturated sodium sulfide provided by the invention comprises the steps:

[0060] a. Stir and disperse polyurethane alkyd resin, isobenzene alkyd resin, pure phenolic resin, surfactant, wax, white carbon black, and some solvents, and roll them into base ink;

[0061] b. After adding optical variable anti-counterfeiting pigments, fluorescent trace markers, catalysts, and solvents, stir and disperse at high speed to obtain a product with a viscosity of (0.1-20) Pa·s (40°C, 300s) -1 ).

[0062] The engraving gravure ink resistant to saturated sodium sulfide of the invention can be used for printing.

Embodiment 1

[0064] Inks are prepared according to the following composition:

[0065]

[0066] According to the above formula, the polyurethane alkyd resin linking material, m-benzene alkyd resin linking material, pure phenolic resin linking material, surfactant, wax, white carbon black, optical variable anti-counterfeiting pigment, desiccant, solvent are stirred and dispersed at high speed, rolled Make a white base for later use; add optically variable anti-counterfeiting pigments, fluorescent trace markers, white base, desiccant, and solvent, and then stir and disperse at high speed. After the ink is stable, test the viscosity and adjust it to a suitable range with a solvent. The optically variable anti-counterfeiting ink was prepared with a viscosity of 10Pa·s (40°C, on a flat plate, with a shear rate of 300s -1 ).

Embodiment 2

[0067] Embodiment 2 Resistance to saturated sodium sulfide test

[0068] The experimental ink prepared in Example 1 was compared with the comparative ink, which was selected from the inks described in Example 1 in Patent 201610130693.5. The specific formula is: 38.7% of acrylic modified polyester resin, 10% of isobenzene alkyd resin, 11% of rosin modified phenolic resin, 3% of dodecylbenzenesulfonate ammonium salt, 5% of caraba wax, silicon dioxide A300 5%, Zibianjin optical variable pigment 25%, mineral oil solvent D130 2%, non-cobalt iron-halogen azabicyclic macrocyclic iron complex 0.3%.

[0069] At 25°C, completely soak the experimental ink and comparative ink in a 100ml beaker filled with saturated sodium sulfide solution, and let it stand for 30 minutes. After taking it out, rinse it three times with tap water. After natural drying, compare with the standard sample for rating. The levels from low to high are 1-5 respectively.

[0070] The test result of the experimen...

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Abstract

The invention provides an engraving gravure ink resistant to saturated sodium sulfide. Based on the total amount of the engraving gravure ink, the engraving gravure ink comprises the following components in percentage by weight: 37.5%-70% of a binder, 5%-20% of an optically variable anti-counterfeiting pigment, 0-35% of an auxiliary agent, 0-5% of a solvent, 0-2% of a drying agent and 0.01-0.5% ofa trace element marker, and the total amount of the components is 100%; the solvent content of the ink is less than or equal to 8%. Good physicochemical resistance, printing test printing performanceand bonding fastness with a base material are realized. Meanwhile, a printed product printed by adopting the engraving gravure ink has three anti-counterfeiting characteristics: the special anti-counterfeiting performance of the engraving gravure ink; an optical variable anti-counterfeiting characteristic; and trace marker anti-counterfeiting characteristic; markers can be customized according tothe requirements of customers. An X-ray fluorescence spectrometer can be used for carrying out qualitative or quantitative analysis on the trace markers. The engraving gravure ink can be used for printing banknotes and enhancing the first-line anti-counterfeiting function of the banknotes.

Description

technical field [0001] The invention relates to the technical field of printing inks, in particular to an optically variable anti-counterfeiting ink, in particular to an engraving gravure ink resistant to saturated sodium sulfide and a preparation method thereof. Background technique [0002] The improvement of the anti-counterfeiting level of RMB has always been the primary issue in the industry. "Easy for the public to identify, difficult for counterfeiters to imitate" has become an important development trend of RMB anti-counterfeiting technology. For the users of RMB, "easy identification for the public" refers to the first-line anti-counterfeiting technology. Judging from the first-line anti-counterfeiting technology of banknotes in recent years, it is mainly the application of optical anti-counterfeiting technology, including pearlescent ink, metallic ink, optical variable ink, etc., magnetic optical variable ink, etc. Among them, the application of optically variabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/50C09D11/105C09D11/103C09D11/102C09D11/037B41F31/00B41C1/02
CPCC09D11/50C09D11/105C09D11/103C09D11/102C09D11/037B41F31/00B41C1/02
Inventor 易方平马永胜乔明孙军飞刘卫东刘木梅胡华蓉贺充恺
Owner CHINA BANKNOTE INK
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