Anti-fouling auxiliary agent for photocurable coating and application thereof

A light-curing coating, a light-curing technology, applied in the application of ultraviolet light-curing coatings, in the field of anti-fouling additives for light-curing coatings, can solve the problems of long synthesis time, low surface energy, long reaction time, etc., and achieve excellent hydrophobicity Oleophobic and anti-fouling effect, good compatibility, long-lasting anti-fouling effect

Active Publication Date: 2019-05-07
SHANGHAI CHENGYING NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, fluorine-containing compounds have the disadvantage of high cost, so an organic silicon compound with low price and low surface energy is used to cooperate with fluorine-containing compounds to reduce surface tension, improve hydrophobic and oleophobic effect, and achieve anti-fouling function. is arousing people's general attention
[0004] Chinese patent CN103665022A discloses an antifouling additive of perfluoropolyether alkoxysilane, but the additive is synthesized using a two-step synthesis method. The first step uses flammable solvent ether, and expensive perfluoropolyether acyl Fluorine reacts with allylamine to obtain allyl perfluoropolyetheramide, and the synthesis time is relatively long, and the second step of reaction needs to be removed before the solvent is removed.
The second step reaction adopts dichloromethane, a relatively toxic low-boiling solvent, and requires a more expensive platinum catalyst. The above-mentioned product allyl perfluoropolyether amide is used to react with trimethoxysilane. The reaction time is long, and it needs to be removed. solvent
Although the anti-fouling performance is good, but because of the complicated preparation process and the use of isocyanate, it needs to be reacted under almost completely anhydrous conditions
Therefore, the process requirements are harsh, so the cost will increase

Method used

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  • Anti-fouling auxiliary agent for photocurable coating and application thereof
  • Anti-fouling auxiliary agent for photocurable coating and application thereof
  • Anti-fouling auxiliary agent for photocurable coating and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In a 100 ml four-neck flask equipped with a magnetic stirrer, a serpentine condenser, a thermometer and a water separator, under nitrogen protection, first add 20 grams of toluene, and then add 11.0 grams of single-end monocarboxysilane oil (molecular weight 2000, 0.0055 mol), 16.5 grams of perfluoropolyether methanol (molecular weight 1000, 0.0165mol), 2.16 grams of maleic anhydride (0.022mol), 0.01 grams of p-hydroxyanisole and 0.03 grams of 4-dimethylaminopyridine were reacted at 90°C for 8 Hour. Then add 1.97 grams of hyperbranched polyester / polyether polyol Boltorn P500 (hydroxyl value 565.9 mgKOH / g, 0.020 mol-OH), 0.10 grams of methanesulfonic acid, and 30 toluene, and heat up to 110 ° C for 8 hours under reflux . After the reaction is finished, filter while hot to remove a small amount of insoluble matter, add an appropriate amount of ethyl acetate to dilute to 20% solid content.

[0038] To gained product, after removing solvent, through 50 degree of vacuum dr...

Embodiment 2

[0040] To a 100 ml four-neck flask equipped with a magnetic stirrer, a serpentine condenser, a thermometer and a water separator, under nitrogen protection, first add 20 grams of toluene, then add 13.2 grams of single-end monocarboxysilane oil (molecular weight 3000, 0.0044 mol), 17.60 grams of perfluoropolyether methanol (molecular weight 2000; 0.0088mol), 1.29 grams of maleic anhydride (0.0132mol), 0.01 grams of p-hydroxyanisole and 0.03 grams of 4-dimethylaminopyridine were reacted at 90°C for 8 Hour. Then add 1.18 grams of hyperbranched polyester / polyether polyol Boltorn P500 (hydroxyl value 565.9mgKOH / g, 0.012mol-OH), 0.058 grams of methanesulfonic acid, and 30 grams of toluene, and heat up to 110°C for reflux reaction 8 Hour. After the reaction is finished, filter while hot to remove a small amount of insoluble matter, add an appropriate amount of ethyl acetate to dilute to 20% solid content.

Embodiment 3

[0042] In a 100 ml four-neck flask equipped with a magnetic stirrer, a serpentine condenser, a thermometer and a water separator, under nitrogen protection, first add 20 grams of toluene, and then add 24.2 grams of single-end monocarboxysilane oil (molecular weight 4000, 0.0061 mol), 6.05 grams of perfluoropolyether methanol (molecular weight 1000; 0.0061mol), 1.19 grams of maleic anhydride (0.0121mol), 0.01 grams of p-hydroxyanisole and 0.03 grams of 4-dimethylaminopyridine at 90 ° C for 8 Hour. Then add 1.08 grams of hyperbranched polyester / polyether polyol Boltorn P500 (hydroxyl value 565.9 mgKOH / g, 0.011 mol-OH), 0.053 grams of methanesulfonic acid, and 30 grams of toluene, and heat up to 110 ° C for reflux reaction 8 Hour. After the reaction is finished, filter while hot to remove a small amount of insoluble matter, add an appropriate amount of ethyl acetate to dilute to 20% solid content.

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Abstract

The invention discloses an anti-fouling auxiliary agent for a photocurable coating and an application thereof. The auxiliary agent concretely is fluorosilicone photocurable hyperbranched polyester/polyether with a maleate structure. The auxiliary agent has a structure as shown in a formula which is described in the specification. Under irradiation of ultraviolet light, the maleate double bond energy in the structure of the auxiliary agent generates a polymerization reaction with double bonds of acrylate resin and an acrylate monomer in a coating for cross-linking and curing, so a coating layerwith excellent hydrophobic and oleophobic performances is formed, and the coating layer has excellent antifouling effect.

Description

technical field [0001] The invention belongs to the technical field of ultraviolet curing antifouling materials, and in particular relates to an antifouling additive for photocuring coatings and its application; Preparation method of ester / polyether and its application as antifouling additive in UV-curable coatings. Background technique [0002] Ultraviolet curing coatings (UV coatings) have been widely used in mobile phones, tablet computers, Harden the surface of the plastic substrate of electronic products such as optical lens, machine control panel, GPS panel, etc., and improve the hardness, transparency, wear resistance, impact resistance and other properties of the plastic substrate. However, during the use of these electronic products, fingerprints, skin oils, ink stains, and other stains are easily left on the screen surface, and the stains are difficult to remove, thereby reducing the surface transparency and affecting the practicality and appearance. Especially i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/16C08G83/00C08G77/46C08G77/445
Inventor 虞明东王艳梅吴江铃
Owner SHANGHAI CHENGYING NEW MATERIALS
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