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UV gloss oil as well as preparation method and application thereof

A varnish and photoinitiator technology, used in coatings, polyurea/polyurethane coatings, etc., can solve problems such as hindering the further application of UV varnish, affecting the application effect of printed products, and damaging the health of operators, and achieves good flow. Flat effect, good recoating effect, and the effect of reducing production cost

Inactive Publication Date: 2020-05-19
山东布瑞特油墨有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only does the varnish product have a high solvent content, but the volatilization of the solvent during the printing and curing process on the printing surface not only pollutes the environment to a certain extent, but also damages the health of the operators.
In addition, the varnish layer (i.e., paint film) formed by solvent-based UV varnish through flexographic printing has poor release effect on the substrate, which affects the application effect of printed products, and also hinders UV varnish and its application in flexographic printing. Further applications in printing

Method used

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  • UV gloss oil as well as preparation method and application thereof
  • UV gloss oil as well as preparation method and application thereof

Examples

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Effect test

preparation example Construction

[0057] The present invention also provides the preparation method of above-mentioned any described UV varnish, and this preparation method comprises the following steps:

[0058] Mix part of the monomer with the photoinitiator, heat and keep stirring until the photoinitiator is fully dissolved in the monomer. In actual operation, the heating temperature and stirring conditions can be controlled according to the properties of the photoinitiator used, for example, stirring at 500rpm / min for 30min or so, and heated to 120°C to fully dissolve the photoinitiator to obtain mixture A;

[0059] Mix the leveling agent with some monomers, keep stirring to fully disperse the leveling agent, and control the stirring at 600rpm / min for about 30min to obtain the mixture B.

[0060] Mix the oligomer, mixture A, mixture B and the remaining monomer, stir at a speed of 400r / min for 20min, and filter with a 200-mesh filter to obtain a UV varnish product.

[0061] In another embodiment, when the ...

Embodiment 1

[0067] Based on the total amount of raw materials, the raw material composition of UV varnish, the weight percentage of each component and the molecular weight of some components are as follows:

[0068] Oligomer: 35%

[0069] Difunctional polyurethane acrylate oligomer with a molecular weight of 4100;

[0070] Monomer: 56%

[0071] 49% trimethylolpropane triacrylate, 7% tripropylene glycol diacrylate;

[0072] Leveling agent: 3%

[0073] Cellulose acetate butyrate (Eastman CAB-551-0.01);

[0074] Photoinitiator: 6%

[0075] 5% 2-hydroxy-methylphenylpropanone, 1% 2,4,6-trimethylbenzoyl-benzhydrylphosphine oxide.

[0076] The preparation method of UV varnish is as follows:

[0077] 1) Mix the monomer and the photoinitiator at a ratio of 1:1, stir at 500rpm / min for about 30min, and heat to about 120°C to fully dissolve the photoinitiator to obtain mixture A;

[0078] 2) Mix the leveling agent and the monomer at a ratio of 1:2, and stir at 600rpm / min for about 30 minutes t...

Embodiment 2

[0081] Based on the total amount of raw materials, the raw material composition of UV varnish, the weight percentage of each component and the molecular weight of some components are as follows:

[0082] Oligomer: 40%

[0083] Difunctional polyurethane acrylate oligomer with a molecular weight of 2800;

[0084] Monomer: 42%

[0085] 35% trimethylolpropane triacrylate, 7% tripropylene glycol diacrylate;

[0086] Leveling agent: 3%

[0087] Cellulose acetate butyrate;

[0088] Photoinitiator: 5%

[0089] 3.5% of 2-hydroxy-methylphenylpropanemethanone, 1.5% of 2,4,6-trimethylbenzoyl-benzhydrylphosphine oxide;

[0090] Active amine photosensitizer: 10%.

[0091] The preparation method of Example 2 is basically the same as that of Example 1, except that when the oligomer, mixture A and mixture B are mixed, an active amine photosensitization accelerator is added.

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Abstract

The invention relates to UV gloss oil as well as a preparation method and application thereof. The gloss oil is prepared from the following raw materials in percentage by weight: 25-50% of oligomer, 39%-60% of a monomer, 5-8% of a leveling agent, and 3-6% of a photoinitiator; wherein the number of functionalities of the oligomer is 2-3, the leveling agent is selected from a cellulose acetate leveling agent, and the monomer is selected from one or more of trimethylolpropane triacrylate, tripropylene glycol diacrylate and 1,6-hexanediol diacrylate. In the UV gloss oil provided by the invention,the oligomer is used as one of main film-forming raw materials, wherein the functionality number of the oligomer is adjusted, and the oligomer is matched with the monomer for use, so that a paint filmformed by the prepared gloss oil has a relatively good release effect and a relatively good recoating effect; in addition, cellulose acetate substances are used as the leveling agent, so that the gloss oil has a good leveling effect, and the release effect of a paint film formed by the gloss oil can be further improved.

Description

technical field [0001] The invention relates to the field of printing inks, in particular to a UV varnish and its preparation method and application. Background technique [0002] Flexo printing is a form of direct printing, called flexo printing due to the use of elastic, raised image plates. Flexographic printing has developed rapidly abroad because it is beneficial to the protection of the environment and meets the hygienic standards of printed food packaging. However, in the domestic packaging and printing industry, flexographic printing started relatively late compared with offset printing and gravure printing. However, with the country's emphasis on environmental protection, flexographic printing has developed rapidly. Especially for the printing of some label products, there is a great demand. [0003] In flexographic printing, it is usually necessary to print varnish to form a paint film to protect the printed pattern, and at the same time give the paint film good ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D5/20C09D7/47
CPCC09D5/20C09D175/14C09D7/47C08L1/14
Inventor 孙世超崔鸿雁
Owner 山东布瑞特油墨有限公司
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