A kind of bronzing UV varnish and its preparation method and application

A technology of varnish and photosensitizer, which is applied in the direction of textiles, papermaking, papermaking, coating, etc., can solve the problems of poor adhesion, short-term bronzing UV varnish, and bronzing defects, so as to achieve no bronzing defects and improve light curing efficiency , to meet the effect of bronzing requirements

Active Publication Date: 2021-09-21
SHENZHEN GLAREWAY TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing bronzing UV varnishes are short-acting, and must be bronzed immediately after offset coating and UV light curing to form a film, and after multiple photocuring or photocuring once, it cannot be placed for more than 12 hours. Hot stamping or although it can be hot stamped, there will be defects such as broken hot stamping and poor adhesion

Method used

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  • A kind of bronzing UV varnish and its preparation method and application
  • A kind of bronzing UV varnish and its preparation method and application
  • A kind of bronzing UV varnish and its preparation method and application

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preparation example Construction

[0065] The present invention also provides the preparation method of the bronzing UV varnish described in the above technical scheme, comprising the following steps:

[0066] Under heating conditions, the photosensitizer, photocrosslinking agent, amine co-initiator and leveling agent are stirred and refluxed and cooled in sequence to obtain the bronzing UV varnish.

[0067] In the present invention, the stirring and refluxing process is preferably to melt the photosensitizer in the range of 90-95° C., then mix it with the photocrosslinking agent, amine co-initiator and leveling agent, and then carry out stirring and refluxing.

[0068] In the present invention, the photosensitizer is melted in the range of 90-95°C, and then mixed with the photocrosslinking agent, amine co-initiator and leveling agent, which can ensure that the photosensitizer does not Coking occurs, ensuring the excellent quality and stability of the bronzable UV varnish product.

[0069] In the present inven...

Embodiment 1

[0079] Weigh 30g of hydroxyl acrylic resin, 10g of bisphenol A epoxy diacrylate, 10g of trimethylolpropane triacrylate, 216g of active amine B-216g, 39.7g of tripropylene glycol diacrylate, 0.3g of DC-57 leveling agent, 2,4,6-Trimethylbenzoyl diphenoxyphos 4g;

[0080] Put the raw materials into the reaction kettle, heat to 120°C, stir and reflux, control the stirring speed to 800r / min, and stir for 2h, cool to 40°C and discharge to obtain bronzing UV varnish.

Embodiment 2

[0082] Weigh 30g of hydroxyl acrylic resin, 10g of bisphenol A epoxy diacrylate, 10g of trimethylolpropane triacrylate, 216g of active amine B-216g, 39.7g of tripropylene glycol diacrylate, 0.3g of DC-57 leveling agent, 2,4,6-Trimethylbenzoyl diphenoxyphos 5g;

[0083] Put the raw materials into the reaction kettle, heat to 125°C, stir and reflux, control the stirring speed to 800r / min, and stir for 3h, cool to 40°C and discharge to obtain bronzing UV varnish.

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Abstract

The invention relates to the technical field of offset printing, in particular to a bronzing UV varnish and a preparation method and application thereof. Compared with the prior art, the bronzing UV varnish provided by the present invention uses a photocrosslinking agent and a specific photosensitizer to cooperate with each other to improve the photocuring efficiency and photocuring rate; at the same time, due to the bronzing UV light provided by the present invention After the oil has been photocured once, the crosslinking density of the bronzing UV varnish film will no longer change. Even if it is subjected to multiple photocuring, the performance of the bronzing UV varnish film will not change. The UV varnish can still meet the bronzing requirements after being placed for 12 months after one photocuring or several times of photocuring, and the bronzing surface has good adhesion and no bronzing defects.

Description

technical field [0001] The invention relates to the technical field of offset printing, in particular to a bronzing UV varnish and a preparation method and application thereof. Background technique [0002] In the packaging and printing process, in order to make the packaged products more attractive to consumers, hot stamping process and UV varnish process are widely used in product packaging. The bronzing UV varnish (bronzable UV-curable varnish) used in the UV varnish process can increase the friction resistance of the ink, protect the printed matter, improve the brightness of the printed matter, and make the packaging more vivid and eye-catching. [0003] The existing bronzing UV varnishes are short-acting, and must be bronzed immediately after offset coating and UV light curing to form a film, and after multiple photocuring or photocuring once, it cannot be placed for more than 12 hours. Hot stamping or although hot stamping can be done, there will be defects such as br...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/04C09D163/10C09D4/06C09D4/02C09D7/63C08J7/04D21H19/16
CPCC08J2433/04C08J2463/10C09D4/06C09D133/04C09D7/63D21H19/16C08L63/10
Inventor 焦杰明骆刚代飞
Owner SHENZHEN GLAREWAY TECH CO LTD
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