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
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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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