Anti-fouling auxiliary agent used for ultraviolet curing coating

A technology of curing coatings and ultraviolet light, applied in antifouling/underwater coatings, paints containing biocides, etc., can solve the problems of long synthesis time, long reaction time, high cost, and achieve excellent hydrophobicity, oleophobicity and antifouling effect. , the raw materials are cheap and easy to obtain, the effect of 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 used for ultraviolet curing coating
  • Anti-fouling auxiliary agent used for ultraviolet curing coating
  • Anti-fouling auxiliary agent used for ultraviolet curing coating

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, then add 9 grams of single-end monocarboxysilane oil (molecular weight 3000, 0.003 mol), 0.29 g of maleic anhydride (0.003 mol), 0.003 g of p-hydroxyanisole and 0.03 g of 4-dimethylaminopyridine were reacted at 90° C. for 8 hours. Then add 1.08 gram hyperbranched polyester / polyether polyol Boltorn P500 (hydroxyl value 565.9mgKOH / g, 0.011mol-OH), 18 gram perfluoropolyether carboxylic acid (molecular weight 2000, 0.009mol), 0.05 gram methyl Sulfonic acid and 30 g of toluene were heated to 110° C. and refluxed for 8 hours. After the reaction is completed, filter while hot to remove a small amount of insoluble matter, and 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 dryings after 12 hour...

Embodiment 2

[0040] 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, then add 12 grams of single-end monocarboxysilane oil (molecular weight 4000, 0.003 mol), 0.29 g of maleic anhydride (0.003 mol), 0.002 g of p-hydroxyanisole and 0.037 g of 4-dimethylaminopyridine were reacted at 90° C. for 8 hours. Then add 0.80 gram of hyperbranched polyester / polyether polyol Boltorn P500 (hydroxyl value 565.9mgKOH / g, 0.0081mol-OH), 18 grams of perfluoropolyether carboxylic acid (molecular weight 3000, 0.006mol), 0.039 gram of methyl Sulfonic acid and 30 g of toluene were heated to 110° C. and refluxed for 8 hours. After the reaction is completed, filter while hot to remove a small amount of insoluble matter, and 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 21 grams of single-end monocarboxysilane oil (molecular weight 5000, 0.0042 mol), 0.41 g of maleic anhydride (0.0042 mol), 0.002 g of p-hydroxyanisole and 0.064 g of 4-dimethylaminopyridine were reacted at 90° C. for 8 hours. Then add 0.91 gram hyperbranched polyester / polyether polyol Boltorn P1000 (hydroxyl value 470mgKOH / g, 0.0076mol-OH), 8.4 gram perfluoropolyether carboxylic acid (molecular weight 2000, 0.0042mol), 0.037 gram methylsulfonate acid, and 30 g of toluene, heated to 110° C. and refluxed for 8 hours. After the reaction is completed, filter while hot to remove a small amount of insoluble matter, and 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 used for an ultraviolet curing coating. The auxiliary agent is a fluorosilicone photocurable hyperbranched polyester/polyether containing a maleate structure, and has a structure shown in the description, wherein R<1> represents an alkyl with 2-5 carbon atoms; R<2> represents an alkylene with 2-5 carbon atoms; m=35 to 80 , n=10 to 20, and m and n are separately an integer. According to the auxiliary agent provided by the invention, under irradiation of ultraviolet light, a maleate double bond in the auxiliary agent structure and double bonds of acrylate resin and an acrylate monomer in the coating can be subjected to a polymerization reaction to cause cross-linking solidification to form a coating with excellent hydrophobic oleophobicproperties, and therefore the coating has an excellent anti-fouling 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 ultraviolet curing coatings; more specifically, it relates to a fluorosilicone photocurable hyperbranched polyester / Preparation method of polyether and its application as anti-fouling 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 tra...

Claims

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Application Information

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