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Temperature-control microcapsule type drying agent as well as preparation method and application thereof

A desiccant and microcapsule technology, which is applied in the field of packaging and printing, can solve the problems of poor drying of water-based gravure printing inks, achieve the effects of increased drying speed, good printing quality, and improved drying speed

Active Publication Date: 2014-03-12
BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem of poor drying performance of water-based gravure ink in the prior art, and provides a temperature-controlled microcapsule desiccant for water-based gravure ink

Method used

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  • Temperature-control microcapsule type drying agent as well as preparation method and application thereof
  • Temperature-control microcapsule type drying agent as well as preparation method and application thereof
  • Temperature-control microcapsule type drying agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Dissolve 0.8g of stearic acid in 50ml of ethanol, then add 10g of calcium oxide (the particle size of calcium oxide powder ranges from 1 micron to 25 microns, the same below), and grind with a sand mill for 1 hour at a speed of 1500 rpm In minutes, the hydrophobic compound is coated on the surface of calcium oxide to form a capsule structure. Add 0.5g of surfactant Tween 80 and disperse with a high-speed dispersant for 1 hour at a speed of 400 revolutions per minute, so that the capsule can be well in water. Dispersion performance. Use a centrifuge for purification at a speed of 4000 revolutions per minute and a centrifugal separation time of 20 minutes. After purification, put it in a drying oven and dry at 60℃ for more than 5 hours. The dried solid material is made into powder.

[0045] Add 1g of powder and 0.01g of alkyl polyoxyethylene ether surfactant A (commercially available) to 10g of acrylic film-forming resin B (commercially available) to stir and disperse, and...

Embodiment 2

[0047] Dissolve 2g of arachidic acid in 40ml of ethanol, then add 10g of calcium oxide, grind it with a sand mill for 2 hours at a speed of 1800 revolutions per minute to coat the hydrophobic compound on the surface of the calcium oxide to form a capsule structure. Add 0.4g The surface active agent Tween 80, use a high-speed dispersant to disperse for 1 hour, and the rotation speed is 400 rpm. Use a centrifuge for purification with a rotation speed of 2000 rpm and a centrifugal separation time of 10 minutes. After purification, put it in a drying oven and dry at 60℃ for more than 5 hours. The dried solid material is made into powder.

[0048] 1g of the powder was added to 8g of acrylic film-forming resin B (commercially available) for stirring and dispersion, and then the mixture was added to 100g of ink.

Embodiment 3

[0050] Dissolve 1g of stearic acid in 30ml of ethanol, then add 10g of calcium oxide, and grind it with a sand mill for 1 hour at a speed of 1500 revolutions per minute to coat the hydrophobic compound on the surface of the calcium oxide to form a capsule structure. Add 0.6 g of surfactant Tween 80, add 0.5 g of alkyl polyoxyethylene ether surfactant A (commercially available), and use high-speed dispersant to disperse for 1 hour at 400 revolutions per minute. Use a centrifuge for purification with a rotation speed of 3000 rpm and a centrifugal separation time of 15 minutes. After purification, put it in a drying oven and dry it at 80℃ for more than 5 hours. The dried solid material is made into powder.

[0051] Add 1g of powder to 20g of acrylic film-forming resin B (commercially available), stir and disperse, sand mill grinding (rotating speed 1500 rpm), and then add the mixture to 100g of ink.

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Abstract

The invention relates to a temperature-control microcapsule type drying agent as well as a preparation method and application of the temperature-control microcapsule type drying agent. The drying agent is suitable for water-based gravure printing ink and belongs to the packaging and printing field. The temperature-control microcapsule type drying agent is mainly composed of calcium oxide and a shell material, wherein the shell material is a hydrophobic type compound. The preparation method comprises the following steps: firstly, dissolving the hydrophobic compound in a solvent which does not dissolve calcium oxide and does not react with the calcium oxide, adding calcium oxide powder, grinding and stirring, and coating the calcium oxide with the hydrophobic compound to form a capsule structure, and adding a surfactant; then, separating, purifying the capsule body, and drying to obtain the temperature-control microcapsule type drying agent suitable for the water-based gravure printing ink. The temperature-control microcapsule type drying agent disclosed by the invention effectively improves drying speed of water-based plastic gravure printing ink and increases printing speed to over 120 meters / minute from 40 meters / minute; and meanwhile, printing ink is good in printability, and printing quality of press work is good.

Description

Technical field [0001] The invention relates to a temperature-controlled microcapsule type desiccant and a preparation method and application thereof. The desiccant is suitable for water-based gravure inks and belongs to the field of packaging printing. Background technique [0002] The drying method of gravure ink is volatilization drying. After printing, the moisture in the ink connecting resin volatilizes and escapes, leaving solid resin and pigment on the surface of the substrate to dry and fix the ink layer. In order to accelerate the speed of volatilization and drying, in most cases, the means of heating and ventilation after printing are used to accelerate the volatilization of the solvent and make the ink dry quickly. Water-based gravure inks are environmentally friendly inks and do not contain any organic solvents. Since the volatile matter in the ink is mainly water, and the volatilization speed of water is much slower than that of organic solvents, water-based gravure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/03
Inventor 徐英杰魏先福黄蓓青
Owner BEIJING INSTITUTE OF GRAPHIC COMMUNICATION