A kind of preparation method of urethane acrylate anti-fog coating containing hydroxyl ammonium salt cured by UV

Abstract

The invention discloses a method for preparing a UV-cured urethane acrylate anti-fog coating containing hydroxyl ammonium salt, which belongs to the technical field of acrylate preparation. The present invention synthesizes a monomer with ammonium salt, and then introduces it into the urethane acrylate oligomer. The product contains hydrophilic hydroxyl group and quaternary ammonium salt, which provides good hydrophilicity. It brings excellent anti-fog effect, good anti-fog durability, simple implementation method and short curing time, and realizes efficient process output. It can be widely used in fields requiring high anti-fog effects, such as architectural glass, automotive glass, and optical devices.

Description

technical field

[0001] The invention relates to a preparation method of a UV-cured urethane acrylate anti-fog coating containing hydroxyl ammonium salt, and belongs to the technical field of acrylate preparation. Background technique

[0002] There is increasing interest in anti-fog coatings. Fogging occurs when the difference between the air temperature and the dew point is typically less than 2.5°C, which limits light transmission and optical efficiency. This phenomenon occurs frequently on optical materials used in everyday life, such as bathroom mirrors, spectacles, safety glasses, swimming goggles, windshields, camera lenses and snowboards as well as analytical and medical instruments. In order to overcome this dilemma, a method of anti-fog treatment on the surface of the substrate was thus proposed.

[0003] Organic coatings with hydrophilic functions generally contain hydrophilic groups such as hydroxyl or carboxylamino groups, which can provide good hydrophilicity. ...

Examples

Embodiment 1

[0021] (1) Synthesis of ammonium salt monomer: Add 10.16 g (0.166 mol) of ethanolamine into a 250 mL three-necked flask equipped with a water bath, thermometer, reflux condenser, dropping funnel, and magnetic stirring bar, and heat under stirring to 60°C. 86.55 g (0.357 mol) of carbon dodecyl to tetradecyl glycidyl ether was slowly added, and the mixture was reacted at 70° C. for 2 h. 20.9g (0.166mol) of dimethyl sulfate and 29.8g (0.4138mol) of methyl ethyl ketone were added dropwise to the stirred mixture while keeping the temperature at 60°C and reacted for 3h to obtain ammonium salt monomer.

[0022] (2) Preparation of urethane acrylate oligomer with ammonium salt: Add 34.5g IPDI (0.16mol) and 100g PETA (0.32mol) at 10°C under stirring, add 0.02g (0.0001 mol) dibutyltin dilaurate (DTBDL). After the addition was complete, the mixture was stirred at 10 °C for 4 h. Then, 20 mL of methyl ethyl ketone and 96.2 g of AS monomer (0.16 mol) were added to the above reaction produ...

technical field

[0001] The invention relates to a preparation method of a UV-cured urethane acrylate anti-fog coating containing hydroxyl ammonium salt, and belongs to the technical field of acrylate preparation. Background technique

[0002] There is increasing interest in anti-fog coatings. Fogging occurs when the difference between the air temperature and the dew point is typically less than 2.5°C, which limits light transmission and optical efficiency. This phenomenon occurs frequently on optical materials used in everyday life, such as bathroom mirrors, spectacles, safety glasses, swimming goggles, windshields, camera lenses and snowboards as well as analytical and medical instruments. In order to overcome this dilemma, a method of anti-fog treatment on the surface of the substrate was thus proposed.

[0003] Organic coatings with hydrophilic functions generally contain hydrophilic groups such as hydroxyl or carboxylamino groups, which can provide good hydrophilicity. ...

Examples

Embodiment 1

[0021] (1) Synthesis of ammonium salt monomer: Add 10.16 g (0.166 mol) of ethanolamine into a 250 mL three-necked flask equipped with a water bath, thermometer, reflux condenser, dropping funnel, and magnetic stirring bar, and heat under stirring to 60°C. 86.55 g (0.357 mol) of carbon dodecyl to tetradecyl glycidyl ether was slowly added, and the mixture was reacted at 70° C. for 2 h. 20.9g (0.166mol) of dimethyl sulfate and 29.8g (0.4138mol) of methyl ethyl ketone were added dropwise to the stirred mixture while keeping the temperature at 60°C and reacted for 3h to obtain ammonium salt monomer.

[0022] (2) Preparation of urethane acrylate oligomer with ammonium salt: Add 34.5g IPDI (0.16mol) and 100g PETA (0.32mol) at 10°C under stirring, add 0.02g (0.0001 mol) dibutyltin dilaurate (DTBDL). After the addition was complete, the mixture was stirred at 10 °C for 4 h. Then, 20 mL of methyl ethyl ketone and 96.2 g of AS monomer (0.16 mol) were added to the above reaction produ...

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