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Cation waterborne ultraviolet curing resin coating and production method

A water-based resin and curing resin technology, applied in the direction of coating, etc., can solve the problems of few reports of cationic water-based photo-curable resin, poor flexibility of paint film, poor acid resistance of resin, etc. Good impact performance

Active Publication Date: 2012-07-18
吉林欣华投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Chinese patents 200610035457.1 and 200610038981.4 disclose anionic water-based UV-curable urethane acrylate coating resins. A hydroxypropionic acid chain extender is introduced into the main chain of urethane acrylate, and then triethylamine is added to form a salt. Because it is an anionic salt-formed resin , so the resin has poor acid resistance, is unstable in acidic medium, and coagulates into blocks
[0004] Aiming at the disadvantage of poor acid resistance of water-based photocurable resin, cationic water-based photocurable resin coating can solve this problem
However, there are few reports on cationic water-based photocurable resins. U.S. Patent No. 6,143,363 reports a class of cationic water-based photocurable resins, which obtain epoxy acrylic acid oligomers through ring-opening of diethanolamine and epoxy acrylate, and then neutralize amines with acids. Water-based photocurable resin
However, the flexibility of the paint film obtained by this type of waterborne epoxy acrylic cationic photocurable resin is poor

Method used

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  • Cation waterborne ultraviolet curing resin coating and production method
  • Cation waterborne ultraviolet curing resin coating and production method

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Embodiment 1: Preparation of cationic water-based UV-curable oligomer

[0035] Add 42.0 grams of polycarbonate diol 2000 into a 500ml three-necked flask, dehydrate at 110°C at 670Pa for 2 hours under reduced pressure, add 30 grams of butanone, and then add 11.0 grams of toluene-2 ​​at 30°C, 4-diisocyanate, stirred and reacted at 40°C for 3 hours. After returning to room temperature, add 2.50 grams of N-methyldiethanolamine, and react for 1.5 hours. After raising the temperature to 90°C, add 10 grams of butanone, 0.55 grams of p-methoxyphenol, 0.025 grams of dibutyltin dilaurate, and acrylic acid 6.3 grams of hydroxyethyl ester, stirred and reacted at 110°C for 3 hours, transferred the obtained product to a high-speed shear disperser, added 2.6 grams of hydrochloric acid at 900 rpm and 60°C, and reacted for 5 minutes, then added 125 After 10 minutes, the UV-curable emulsion can be obtained; transfer it to a rotary evaporator, evaporate butanone under reduced pressure un...

Embodiment 2

[0036] Embodiment 2: Preparation of cationic water-based UV-curable oligomer

[0037]Add 60.0 grams of polypropylene glycol 2000 into a 1000ml three-necked flask, dehydrate at 100°C at 670Pa for 2 hours under reduced pressure, add 20 grams of acetone, and then add 20.2 grams of 1,6-hexyl diisocyanate at 90°C, The reaction was stirred at 100°C for 3 hours. After returning to 25°C, add 6.7 grams of triethanolamine, react for 0.5 hours, and after heating up to 80°C, add 30 grams of acetone, 0.08 grams of hydroquinone, 0.03 grams of stannous octoate, and 15.7 grams of hydroxyethyl methacrylate After stirring and reacting at 90°C for 4 hours, the obtained product was transferred to a high-speed shear disperser, and 6.8 grams of sulfuric acid was added at 900 rpm and 65°C. After reacting for 2 minutes, 330 grams of water was added, and after 25 minutes , to obtain a UV-curable emulsion; transfer it to a rotary evaporator, and evaporate the acetone under reduced pressure at a vacuum...

Embodiment 3

[0038] Embodiment 3: Preparation of cationic water-based UV-curable oligomer

[0039] Add 120 grams of polyethylene glycol 600 into a 2000ml three-necked flask, dehydrate at 120°C and 670Pa under reduced pressure for 1 hour, add 50 grams of butyl acetate, and then add 170.1 grams of isophore at 90°C Ketone diisocyanate was stirred and reacted at 110°C for 6 hours. After returning to 30°C, add 44.1 grams of N-propyldiethanolamine, and react for 2 hours. After raising the temperature to 70°C, add 50 grams of butyl acetate, 0.88 grams of p-methoxyphenol, 0.04 grams of tetra-n-butyltin, hydroxyacrylate 70.1 grams of propyl ester, after stirring and reacting at 100°C for 4 hours, the obtained product was transferred to a high-speed shear disperser, and 25.2 grams of glacial acetic acid was added at 900 rpm and 30°C, and after reacting for 3 minutes, water was added 650 grams, after 18 minutes, a UV-curable emulsion can be obtained; transfer it to a rotary evaporator, evaporate ace...

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Abstract

The invention provides a novel cationic water-dilutable light-cured resin coating and a preparation method thereof. The components of the coating composition in portion by weight are: 95.6 to 97.8 percent of cationic water-dilutable ultraviolet curing oligomer, 0.8 to 2.1 percent of light trigger, 1.0 to 1.8 percent of adhesion promoter and 0.2 to 1.3 percent of flatting agent. The water-dilutable resin coating prepared by the method does not contain any organic solvent and is a real environment-friendly ultraviolet-curing coating, and the preparation method is simple and easy to operate. Moreover, the water-dilutable resin coating has good acid resistance, and is stable in an acid medium; and particularly a paint film obtained after ultraviolet curing has good flexibility, high hardness and good acetone wiping property, adhesion and shock resistance.

Description

technical field [0001] The invention relates to a cationic water-based ultraviolet light curing resin coating and a preparation method. Background technique [0002] UV-curable coatings have the advantages of high efficiency, energy saving, high production efficiency, wear-resistant coating, high hardness, strong adhesion, excellent corrosion resistance and low production cost, and have great market potential. Since the viscosity of UV-curable coating polymers is generally relatively high, it is difficult to construct and apply. It is necessary to add a large amount of reactive diluent to adjust to a suitable construction viscosity. Most reactive diluents are acrylic functional monomers, and the volume of the coating film after curing Large shrinkage and poor adhesion. Most reactive diluents have a low boiling point and are difficult to react completely during the photocuring process, which will lead to an increase in the volatile organic component (VOC) content of the coat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D4/02
Inventor 张红明李季王献红王佛松
Owner 吉林欣华投资有限公司
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