Quick-drying UV-curing ink and preparation method thereof

An ink and photoinitiator technology, applied in the field of quick-drying UV-curable ink and its preparation, can solve problems such as low price, and achieve the effects of good printability, low synthesis cost and good fixing effect

Inactive Publication Date: 2018-10-16
GUANGDONG ZHUANGLI COLOR PRINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although various enterprises and research institutes have begun to conduct research on macromolecular photoinitiators, a macromolecular photoinitiator with high initiation efficiency, low price, and easy synthesis has not yet appeared on the market. The development of this type of photoinitiator will It is of great significance to make UV quick-drying ink

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The polydimethylsiloxane macromolecule photoinitiator containing benzophenone segment in this embodiment is prepared through the following steps:

[0026] S1, add 29.7g (0.15mol) of 4-hydroxybenzophenone, 2g (0.015mol) of sodium iodide, 60g (1.5 mol), methanol 200ml, heat up to 40~50°C while stirring, until the solid is completely dissolved, keep warm for 20min;

[0027] S2, add 115g (1.5mol) of allyl chloride dropwise to the bottle under stirring condition, the temperature is controlled at 40~50°C, keep warm for 20min and stir after dropping, then raise the temperature to 75°C for 4h, and cool to room temperature;

[0028] S3, pour the reactant into a 250ml beaker filled with 120g of crushed ice, stir, vacuum filter, collect the precipitate, wash the precipitate with 300ml of 45°C warm water for 2 or 3 times, and air-dry to obtain the product white crystal C1 (4- Allyl benzophenone), the crude product was recrystallized with methanol to obtain C1 with a mass of 21.5g,...

Embodiment 2

[0037] The polydimethylsiloxane macromolecule photoinitiator containing benzophenone segment in this embodiment is prepared through the following steps:

[0038] S1, add 39.6g (0.2mol) of 4-hydroxybenzophenone, 3g (0.02mol) of sodium iodide, 80g (2mol) of sodium hydroxide to a 500ml four-necked flask equipped with a reflux condenser, a stirrer, and a thermometer ), methanol 250ml, heat up to 45~50°C while stirring until the solid is completely dissolved, and keep warm for 30min;

[0039] S2, add 153g (2mol) of allyl chloride dropwise to the bottle under stirring condition, the temperature is controlled at 40~50°C, keep warm for 10min and stir after dropping, then raise the temperature to 80°C for 3h, and cool to room temperature;

[0040] S3, pour the reactant into a 250ml beaker filled with 120g of crushed ice, stir, vacuum filter, collect the precipitate, wash the precipitate with 300ml of 50°C warm water for 3 or 4 times, and air-dry to obtain the product white crystal C1 (...

Embodiment 3

[0049] The polydimethylsiloxane macromolecule photoinitiator containing benzophenone segment in this embodiment is prepared through the following steps:

[0050] S1, add 49.5g (0.25mol) of 4-hydroxybenzophenone, 4g (0.025mol) of sodium iodide, 100g (2.5 mol), methanol 300ml, heat up to 45~60°C while stirring, until the solid is completely dissolved, keep warm for 40min;

[0051] S2, add 190 g (2.5 mol) of allyl chloride dropwise to the bottle under stirring condition, control the temperature at 45~60°C, keep warm for 5 minutes and stir after dropping, then raise the temperature to 95°C for 2.5 hours, and cool to room temperature;

[0052] S3, pour the reactant into a 500ml beaker filled with 200g of crushed ice, stir, vacuum filter, collect the precipitate, wash the precipitate with 300ml60°C warm water for 3 or 4 times, and air-dry to obtain the product white crystal C1 (4- Allyl benzophenone), the crude product was recrystallized with methanol to obtain C1 with a mass of 41...

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PUM

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Abstract

The invention discloses quick-drying UV-curing ink. The quick-drying UV-curing ink comprises the following components in parts by weight: 6-15 parts of a photoinitiator, 55-78 parts of a connecting material, 15-25 parts of a pigment, and 1-5 parts of an auxiliary agent, wherein the connecting material comprises a monomer diluent and a prepolymer, the pigment includes a combination of at least oneselected from benzidine yellow, iron oxide yellow, phthalocyanine blue, magenta, Lithol red, titanium white and carbon black, and the auxiliary agent comprises a combination of wax and one or two selected from an antifoaming agent and a levelling agent. The invention also discloses a preparation method of the quick-drying UV-curing ink. The quick-drying UV-curing ink disclosed by the invention canmeet the drying requirement of 15000 / hour high-speed printing of a UV printing machine, and a residual amount of a solvent meets an SN / T3551-2013 standard; the ink has the advantages of quick drying,good printing suitability, a good fixing effect and a low residual amount of the light initiator, and good safety and environmental protection performance, and is suitable for the fields of food andpharmaceutical packaging; and the raw material synthesis costs are low, and investment of the costs is reduced.

Description

technical field [0001] The invention belongs to the technical field of printing inks, and in particular relates to a fast-drying UV curing printing ink and a preparation method thereof. Background technique [0002] Since the UV offset printing ink adopts the dry form of photocuring, the photoinitiator has become a key component in the UV ink, which plays a decisive role in the photocuring rate of the ink product, and also affects the performance of the ink layer after film formation. At present, most of the photoinitiators used in the market are small organic molecules, which are often accompanied by some problems during use, such as the poor solubility and easy precipitation of some small molecule photoinitiators in the ink system, resulting in reduced initiation efficiency; residues after curing The initiators and photolysis products of small molecules are easy to migrate to the surface of the ink layer, causing product safety problems; in addition, some small molecule ph...

Claims

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Application Information

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IPC IPC(8): C09D11/101
CPCC09D11/101
Inventor 汤树海曾繁鑫郑少筠连俊华
Owner GUANGDONG ZHUANGLI COLOR PRINTING
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