UV-curable anti-fog coating composition

An anti-fog coating and composition technology, which is applied in polyester coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc. Grinding performance, increase in cross-linking density, ensure the effect of continuous anti-fog performance

Active Publication Date: 2019-04-12
SHANGHAI WEIKAI CHEM +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hardness of the coating is greater than 2H, and the wear resistance is good, but the continuous anti-fog performance is average. The curing process takes a long time, and it needs to be cured in sections (50 ° C ~ 120 ° C), and the process is relatively complicated.
[0007] If the anti-fog coating on the market continues to have excellent hydrophilic performance, it cannot guarantee the wear resistance; on the contrary, while the hardness and wear resistance are excellent, the continuous anti-fog effect is mediocre
In order to overcome the contradiction between the continuous anti-fog performance and wear resistance of traditional anti-fog coatings on the market, it is urgent to develop an anti-fog coating that is both hydrophilic and wear-resistant.

Method used

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  • UV-curable anti-fog coating composition
  • UV-curable anti-fog coating composition
  • UV-curable anti-fog coating composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] This embodiment provides a UV-curable anti-fog coating composition, and the components and parts by weight of the composition are shown in Table 1.

[0047] The synthetic method of pure acrylic resin described in the present embodiment is as follows:

[0048] In a 250 ml four-necked bottle equipped with a mechanical stirrer, a thermometer, and a nitrogen gas introduction device, add ethylene glycol monomethyl ether (20 grams), first add 20% monomer, initiator AIBN (0.21 grams) and ethylene glycol The mixture of monomethyl ether (40 grams) was raised to 80-85 degrees, and reacted for 0.5 hours. Then dropwise add the mixture of remaining monomer, initiator and ethylene glycol monomethyl ether within 2 hours, after the dropwise addition, continue to react for 3 hours. The monomers include: monomer I (9.7 g, 12.5 mmol), monomer II (8.9 g, 8.3 mmol), HBA (1.2 g, 8.3 mmmol), AA (0.9 g, 12.5 mmol).

[0049] Add GMA (9.3 grams, 12.5mmol), benzyltrimethylammonium chloride cata...

Embodiment 2

[0051] This embodiment provides a UV-curable anti-fog coating composition, and the components and parts by weight of the composition are shown in Table 1.

[0052] The synthetic method of pure acrylic resin described in the present embodiment is as follows:

[0053] In a 250 ml four-necked bottle equipped with a mechanical stirrer, a thermometer, and a nitrogen gas introduction device, add ethylene glycol monomethyl ether (20 grams), first add 20% monomer, initiator AIBN (0.24 grams) and ethylene glycol The mixture of monomethyl ether (40 grams) was raised to 80-85 degrees, and reacted for 0.5 hours. Then dropwise add the mixture of remaining monomer, initiator and ethylene glycol monomethyl ether within 2 hours, after the dropwise addition, continue to react for 3 hours. The monomers include: monomer I (12.9 g, 16.6 mmol), monomer II (8.9 g, 8.3 mmol), HBA (1.2 g, 8.3 mmmol), AA (0.6 g, 8.3 mmol).

[0054] Add GMA (6.2 grams, 16.6mmol), benzyltrimethylammonium chloride cata...

Embodiment 3

[0056] This embodiment provides a UV-curable anti-fog coating composition, and the components and parts by weight of the composition are shown in Table 1.

[0057] The synthetic method of pure acrylic resin described in the present embodiment is as follows:

[0058] In the 250 milliliter four-necked bottle that is equipped with mechanical stirring, thermometer, nitrogen introduction device, add ethylene glycol monomethyl ether (25 grams), add 20% monomer, initiator AIBN (0.26 grams) and ethylene glycol earlier The mixture of monomethyl ether (40 grams) was raised to 80-85 degrees, and reacted for 0.5 hours. Then dropwise add the mixture of remaining monomer, initiator and ethylene glycol monomethyl ether within 2 hours, after the dropwise addition, continue to react for 3 hours. The monomers are: monomer I (6.4 g, 8.3 mmol), II (17.8 g, 16.6 mmol), HBA (1.2 g, 8.3 mmmol), AA (0.6 g, 8.3 mmol).

[0059] Add GMA (6.1 grams, 8.3mmol), benzyltrimethylammonium chloride catalyst (...

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Abstract

The invention provides an ultraviolet light curing antifog coating composition. The composition is prepared from, by weight, 40-80 parts of hydrophilic light-cured resin, 15-45 parts of hydrophobic light-cured resin, 5-15 parts of hydrophilic light curing monomers, 1-5 parts of photoinitiator and 0.01-0.05 part of an auxiliary, the composition further comprises a solvent, and the weight of the solvent is 2-4 times of the total weight of the other components. After the ultraviolet light antifog coating is cured by ultraviolet light, the water resisting performance of a coating film is improved, lasting antifog performance is achieved, and the coating film is high in hardness, good in scrubbing resistance and very suitable for fields such as automotive lamps, windshields, bathroom mirrors, optical lens materials which have antifog requirements.

Description

technical field [0001] The invention belongs to the field of light-curing coatings, and in particular relates to an ultraviolet light-curing anti-fog coating composition. Background technique [0002] When the water vapor in the air is lower than the dew point, it will condense into tiny liquid droplets to form fog. This adverse effect often occurs on windows, bathroom mirrors, glasses, swimming and diving glasses, windshields, optical instrument lenses, car lights, indicator lights, agricultural films and other transparent materials that are closely related to our lives. As a result of the atomization of water droplets on the surface of transparent materials, not only the decrease of light transmittance will affect the vision, but sometimes it will cause harm. For example, when the droplets condense on the lens surface of precision analysis instruments such as infrared optical microscopes, the accuracy of its analysis will be reduced. When the fog droplets condense on the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D151/08C09D175/14C09D163/10C09D167/06C08F283/06C08F216/14C08F220/28C08F220/06C08F8/14
CPCC08F8/14C08F283/065C08L2205/03C08L2205/035C09D7/63C09D151/08C08L75/14C08L63/10C08L67/06C08L63/00
Inventor 虞明东王艳梅李桐王晨
Owner SHANGHAI WEIKAI CHEM
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