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Environmentally friendly and energy-saving led photocurable ink and its application

A light-curing ink, environmental protection and energy-saving technology, applied in the field of ink, can solve the problems of decreased production efficiency and increased curing time, and achieve the effects of fast curing, reduced viscosity, and reduced dosage

Active Publication Date: 2020-06-30
中山市中益油墨涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the light wave with a wavelength above 400nm, its energy gradually decreases with the increase of the wavelength. Although it has a high light conversion power, when the wavelength above 400nm is used for curing, the curing time will increase significantly, generally it takes 2-3 hours, which leads to a serious drop in the production efficiency of the enterprise, so it cannot be cured with wavelengths above 400nm

Method used

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  • Environmentally friendly and energy-saving led photocurable ink and its application
  • Environmentally friendly and energy-saving led photocurable ink and its application
  • Environmentally friendly and energy-saving led photocurable ink and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The environmentally friendly and energy-saving LED light-curable ink comprises, by mass percentage, 15% of a pigment (pearlescent gold), 10% of a photoinitiator (1173), 70% of an ink prepolymer and 5% of an initiating monomer (HDDA).

[0039]The ink prepolymer is a hyperbranched urethane acrylate with a branching degree of 0.70, which is prepared in the following steps:

[0040] (1) Diisocyanate monomer reacts with diol to obtain a reaction intermediate containing an average of two isocyanate groups, denoted as A 2 ;

[0041] (2) Make A 2 React with a monoamino polyhydroxy monomer to obtain a reaction intermediate containing an average of one isocyanate and multiple hydroxyl groups, denoted as ABn;

[0042] (3) ABn monomer undergoes polycondensation reaction to form a hyperbranched polyurethane HPU-Xm containing an average of 2-32 terminal hydroxyl groups;

[0043] (4) diisocyanate monomer reacts with acrylate hydroxyl ester monomer, obtains the reaction intermediate...

Embodiment 2

[0058] The environmentally friendly and energy-saving LED light-curable ink comprises 22% of pigment (pearl luster silver white), 10% of photoinitiator (184), 60% of ink prepolymer and 8% of initiating monomer (TMPTA) in terms of mass percentage.

[0059] The ink prepolymer is a hyperbranched urethane acrylate with a branching degree of 0.68, which is prepared by the following method steps:

[0060] (1) Diisocyanate monomer reacts with diol to obtain a reaction intermediate containing an average of two isocyanate groups, denoted as A 2 ;

[0061] (2) Make A 2 React with a monoamino polyhydroxy monomer to obtain a reaction intermediate containing an average of one isocyanate and multiple hydroxyl groups, denoted as ABn;

[0062] (3) ABn monomer undergoes polycondensation reaction to form a hyperbranched polyurethane HPU-Xm containing an average of 2-32 terminal hydroxyl groups;

[0063] (4) diisocyanate monomer reacts with acrylate hydroxyl ester monomer, obtains the reactio...

Embodiment 3

[0078] Environmentally friendly and energy-saving LED light-curable ink, by mass percentage, includes 15% of pigment (pearl luster yellow), 20% of photoinitiator (TPO), 55% of ink prepolymer and 10% of initiating monomer (HDDA+TMPTA).

[0079] The ink prepolymer is a hyperbranched urethane acrylate with a branching degree of 0.68, which is prepared by the following method steps:

[0080] (1) Diisocyanate monomer reacts with diol to obtain a reaction intermediate containing an average of two isocyanate groups, denoted as A 2 ;

[0081] (2) Make A 2 React with a monoamino polyhydroxy monomer to obtain a reaction intermediate containing an average of one isocyanate and multiple hydroxyl groups, denoted as ABn;

[0082] (3) ABn monomer undergoes polycondensation reaction to form a hyperbranched polyurethane HPU-Xm containing an average of 2-32 terminal hydroxyl groups;

[0083] (4) diisocyanate monomer reacts with acrylate hydroxyl ester monomer, obtains the reaction intermedia...

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Abstract

The invention provides novel, environment-friendly and energy-saving LED photocuring printing ink. The novel, environment-friendly and energy-saving LED photocuring printing ink comprises the following components by mass percent: 15-22% of pigment, 10-20% of a photoinitiator, 55-70% of a printing ink prepolymer and 5-15% of an initiation monomer. By virtue of independently synthesized hyperbranched polyurethane acrylate with the branching degree of 0.68-0.72, content of double bonds and curing speed of the printing ink polymer are increased, viscosity is low, curing is fast, and usage amounts of the photoinitiator and the initiation monomer in formula design of the printing ink are reduced, so that migration and residue of the photoinitiator are reduced, requirement on LED output power is lowered, energy consumption during curing of the printing ink of an enterprise is reduced, environmental protection and energy conservation are realized, and popularization and application in industries are facilitated. Meanwhile, the invention also provides an application mode of the LED photocuring printing ink.

Description

technical field [0001] The invention belongs to the technical field of ink, and in particular relates to an LED photocurable ink and an application thereof. Background technique [0002] Ultraviolet (UV) curing is the most widely used type of curing technology in radiation curing. It emerged in the 1960s. German Bayer company took the lead in using the UV curing system of unsaturated resin and benzoic acid to make commercial products. The first generation of UV-curable coatings was invented, and my country developed rapidly after the 1990s. It is a cross-linking and curing technology that triggers a chemical reaction of the mixture of monomers, oligomers and photosensitizers under the irradiation of ultraviolet light to realize the transformation from liquid or semi-liquid to solid state. This technology has fast curing speed and high production efficiency. , saving energy, less pollution and other advantages, it is an environment-friendly technology. It is widely used in p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/101
CPCC09D11/101
Inventor 陈显颂陈景文陈海生包勇
Owner 中山市中益油墨涂料有限公司