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A kind of ultraviolet curing digital printing varnish and its preparation method and application

A digital printing and ultraviolet light technology, applied in the direction of coating, polyether coating, etc., can solve the problems of difficult to meet the requirements of friction resistance, slower drying of varnish, slow drying of varnish, etc., to meet the needs of high-speed printing, improve Drying efficiency and low shrinkage effect

Active Publication Date: 2021-02-02
HUIZHOU PERFECT CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 7. The drying of varnish is very slow, and it needs to pass the friction tester 200 times at the same time, which is also a major technical difficulty (usually the slower the drying of UV varnish, the worse the hardness, and the harder it is for the friction resistance to meet the requirements)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] S1. Add 15 kg of neopentyl glycol polymethyl oxirane diacrylate, add 45 kg of special modified acrylic resin at a stirring speed of 800-1000 rpm, add 1 kg of TPO initiator and large Molecular photoinitiator 7 kg, then increase the speed to 1600-1800 rpm, stir for 20-40 minutes until completely dissolved, cool down to about 25 degrees to get a semi-finished product for use;

[0044] S2. Add 12 kg of tripropylene glycol dipropylene glycol and 12 kg of special modified non-yellowing amine co-initiator to the semi-finished product, mix evenly, stir at 800-1000 rpm, and stir for 5-15 minutes; then increase Rotate to 1600-1800 rpm, stir for 20-40 minutes until the dispersion is uniform and the fineness is qualified, and the temperature is lowered to 20-25 degrees Celsius before proceeding to the next step;

[0045] S3. Reduce the rotation speed to 600 rpm, add 0.5 kg of silicone defoamer and 1 kg of silicone leveling agent, stir for 20 minutes until it is completely dissolved...

Embodiment 2

[0047] S1. Add 10 kg of neopentyl glycol polymethyl oxirane diacrylate, add 40 kg of special modified acrylic resin at a stirring speed of 800-1000 rpm, add 1.5 kg of TPO initiator and large Molecular photoinitiator 8 kg, then increase the speed to 1600-1800 rpm, stir for 20-40 minutes until completely dissolved, cool down to about 25 degrees to get a semi-finished product for use;

[0048] S2. Add 15 kg of tripropylene glycol dipropylene glycol and 11 kg of special modified non-yellowing amine co-initiator to the semi-finished product, mix evenly, stir at a stirring speed of 800-1000 rpm, and stir for 5-15 minutes; then increase Rotate to 1600-1800 rpm, stir for 20-40 minutes until the dispersion is uniform and the fineness is qualified, and the temperature is lowered to 20-25 degrees Celsius before proceeding to the next step;

[0049] S3. Reduce the rotation speed to 600 rpm, add 0.2 kg of silicone defoamer and 0.8 kg of silicone leveling agent, stir for 20 minutes until it...

Embodiment 3

[0051] S1. Add 7 kg of neopentyl glycol polymethyl oxirane diacrylate, add 50 kg of special modified acrylic resin at a stirring speed of 800-1000 rpm, add 1.5 kg of TPO initiator and large Molecular photoinitiator 9 kg, then increase the speed to 1600-1800 rpm, stir for 20-40 minutes until completely dissolved, cool down to about 25 degrees to obtain a semi-finished product for use;

[0052]S2. Add 13 kg of tripropylene glycol dipropylene glycol and 10 kg of special modified non-yellowing amine co-initiator to the semi-finished product, mix evenly, stir at a stirring speed of 800-1000 rpm, and stir for 5-15 minutes; then increase Rotate to 1600-1800 rpm, stir for 20-40 minutes until the dispersion is uniform and the fineness is qualified, and the temperature is lowered to 20-25 degrees Celsius before proceeding to the next step;

[0053] S3. Reduce the rotation speed to 600 rpm, add 0.1 kg of silicone defoamer and 0.6 kg of silicone leveling agent, stir for 20 minutes until t...

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Abstract

The invention relates to the field of polymer materials, and discloses a UV-curable digital printing varnish, which comprises the following components in mass percentage: 40-60% of modified acrylic resin; neopentyl glycol polymethyl oxirane diacrylate 5‑15%; tripropylene glycol dipropylene glycol 10‑15%; modified amine co-initiator 10‑12%; photoinitiator combination 8‑12%; auxiliary agent 1‑2%. The invention also discloses its preparation method and application. The varnish of the present invention has excellent adhesion and weather resistance.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an ultraviolet light curing digital printing varnish and a preparation method and application thereof. Background technique [0002] Digital printing is a new printing method that directly prints computer files on paper, which is different from the tedious process of traditional printing. Its features: printing from one sheet, no need for plate making, instant printing, instant error correction, variable printing, and printing on demand. Digital printing is a comprehensive technology developed on the basis of printing technology. It takes electronic text as the carrier and transmits it to digital printing equipment through the network to realize direct printing. No plate and variable information are the biggest features in the printing production process, covering printing, electronics, computer, network, communication and other technical fields. [0003] Since the post-process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/00C09D171/02C09D7/63
CPCC09D133/00C09D7/63C08L71/02
Inventor 官炼谢朝晖
Owner HUIZHOU PERFECT CHEM IND CO LTD
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