Waterborne wear-resisting ultraviolet-cured glazing oil and preparation method thereof

An ultraviolet light, water-based technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of slow drying speed, poor surface adhesion of printed matter, poor water resistance, etc., to improve work efficiency, enhance initial viscosity, and increase water resistance. sexual effect

Active Publication Date: 2011-02-09
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to reduce the viscosity of the glazing oil and facilitate the operation, toxic and harmful substances such as organic solvent toluene and xylene are generally used as diluents to dilute the glazing oil, which not only causes great harm to the operator's body but also greatly pollutes the environment, which is not environmentally friendly. Require
For this reason, CN 101748657A, ZL 200410015113.5 and CN 101503580A respectively reported the preparation method of solvent-free UV-curable varnish, and replaced the organic solvent with reactive diluent monomer, however, the residual reactive diluent will still be in a certain A certain amount of pollution to the environment
Therefore, water-based varnishes have undoubtedly gradually become an ideal type of varnish. ZL 00117402.9 and ZL 200610035929.3 successively reported water-based varnishes of

Method used

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  • Waterborne wear-resisting ultraviolet-cured glazing oil and preparation method thereof
  • Waterborne wear-resisting ultraviolet-cured glazing oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1: Preparation of modified polyurethane acrylate anionic waterborne resin

[0040] Under the protection of dry nitrogen, add 0.8 mol of KH-550 and 0.7 mol of epoxy resin E51 into a four-neck flask, mix well, and react at 25°C for 3 hours. Then, under the protection of nitrogen, add 4.5mol of isophorone diisocyanate, 0.35mol of vacuum dehydrated polybutylene adipate diol (molecular weight is 1000), dimethylolpropionic acid of 1.8mol, 0.0003mol Dibutyltin dilaurate and 3mol butanone, react for 2 hours, heat up to 75°C, add 0.45mol of diethylene glycol and 0.35mol of trimethylolpropane, react for 1.5 hours, add 0.7mol of hydroxyethyl acrylate Ester, 0.4mol pentaerythritol triacrylate and 0.002mol p-hydroxyanisole were reacted for 2 hours, cooled to 45°C, added 1.4mol triethylamine, stirred for 20min, butanone was removed under reduced pressure, and the material was discharged. The modified polyurethane acrylate anionic water-based resin is obtained.

Embodiment 2

[0041] Embodiment 2: Preparation of modified polyurethane acrylate anionic waterborne resin

[0042]Under the protection of dry nitrogen, 1.2 mol of KH-602 and 1.1 mol of epoxy resin E44 were added into a four-neck flask, mixed evenly, and reacted at 25°C for 3 hours. Then, under the protection of nitrogen, add 3.5 mol of isophorone diisocyanate, 2 mol of 2,4-xylene diisocyanate, 0.5 mol of polypropylene glycol (molecular weight is 2000) of vacuum dehydration, 2.2 mol of dimethylol butyric acid , 0.0005mol dibutyltin dilaurate and 5mol butanone, react for 2 hours, heat up to 75°C, add 0.5mol triethylene glycol and 0.45mol pentaerythritol, react for 1.5 hours, add 1.1mol hydroxyethyl acrylate React with 0.5mol pentaerythritol triacrylate and 0.005mol p-hydroxyanisole for 2 hours, cool down to 45°C, add 1.8mol dimethylethanolamine, stir for 20min, remove methyl ethyl ketone under reduced pressure, and discharge. The modified polyurethane acrylate anionic water-based resin is ob...

Embodiment 3

[0043] Example 3: Preparation of modified polyurethane acrylate cationic water-based resin. Under the protection of dry nitrogen, add 0.3 mol of KH-902, 0.7 mol of KH-113 and 0.9 mol of epoxy resin E51 into a four-necked bottle, and mix well , reacted at 25°C for 3 hours. Then, under nitrogen protection, add 2mol methylcyclohexyl diisocyanate, 3mol isophorone diisocyanate, 0.4mol polyethylene adipate diol (molecular weight is 1800) of vacuum dehydration, 2mol N-methyl Diethanolamine, 0.0003mol dibutyltin dilaurate and 6mol butanone were reacted for 2 hours, the temperature was raised to 75°C, 0.18mol of 1,2-propanediol, 0.3mol of neopentyl glycol and 0.4mol of trihydroxypropane were added, and the reaction After 1.5 hours, add 1.0mol of hydroxyethyl acrylate, 0.45mol of pentaerythritol triacrylate and 0.004mol of p-hydroxyanisole, react for 2 hours, cool down to 40°C, add 1.6mol of glycolic acid, stir for 30min, remove butanone under reduced pressure ,Discharge. The modified...

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Abstract

The invention provides waterborne wear-resisting ultraviolet-cured glazing oil and a preparation method thereof. Epoxy resin is subjected to ring opening by the amino of an amino siloxane coupling agent, and is subjected to polymerization with diisocyanate, a chain extender and hydroxyl acrylate to prepare modified polyurethane acrylate waterborne light-cured resin, and is stirred with various aids to obtain a target. A siloxane group is introduced into a resin main chain structure, so that the wear resistance and the water resistance of the glazing oil are improved; a dry film of the glazingoil has the 100-circle wear of less than 0.1 g, and does not foam or fall after soaking in water for 10 hours. An epoxy resin structure is introduced, so that the initial tack of the glazing oil to print ink is improved. Through small molecules and an internal crosslinker chain extender, an obtained flexible chain structure resin ensures the adhesion and the flexibility of the glazing oil on the ink, the folding number of the dry film of the glazing oil is 16 to 20, and the adhesion is 0 to 1 level. An active monomer diluent is not used, toxic and harmful substances of methylbenzene or dimethylbenzene are free, and a paint film does not have a diluent residual, and is environment-friendly.

Description

technical field [0001] The invention belongs to a water-based wear-resistant UV-cured varnish and a preparation method thereof, in particular to a water-based wear-resistant UV-cured varnish used for glazing the surface of printing ink, and is suitable for food, medicine and tobacco packaging industry. technical background [0002] At present, in the printing and packaging industry, a layer of varnish is usually applied to the ink surface of printed matter to increase the aesthetics and wear resistance of the printed matter. In order to reduce the viscosity of the glazing oil and facilitate the operation, toxic and harmful substances such as organic solvent toluene and xylene are generally used as diluents to dilute the glazing oil, which not only causes great harm to the operator's body but also greatly pollutes the environment, which is not environmentally friendly. Require. For this reason, CN 101748657A, ZL 200410015113.5 and CN 101503580A respectively reported the pre...

Claims

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Application Information

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IPC IPC(8): C09D7/12C09D175/14C08G18/67C08G18/58
Inventor 张红明李季王献红王佛松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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