Quaternary ammonium salt modified organosilicon polyurethane ocean antifouling paint and preparation method and application thereof
A marine antifouling, quaternary ammonium salt technology, applied in the direction of polyurea/polyurethane coatings, antifouling/underwater coatings, coatings, etc. The effect of adsorption and avoidance
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Embodiment 1
[0032] 1) React 47.9g of chloropropylmethyldichlorosilane and 4.5g of water in the organic solvent ether for 3 hours, wash with water until neutral, dry with anhydrous calcium chloride, remove the organic solvent ether by distillation at atmospheric pressure, and distill under reduced pressure to obtain 2 ,4,6-tris(3-chloropropyl)-2,4,6-trimethyl-cyclotrisiloxane;
[0033] 2) Dissolve 40.50g of allyl glycidyl ether in toluene, add 20 μL of catalyst chloroplatinic acid, raise the temperature to 80°C, slowly add 46.85g of tetramethyldisiloxane dropwise under stirring, and continue the reaction at 120°C for 6 h Afterwards, underpressure distillation obtains 1,3-bis[3-(2,3-epoxypropoxy)propyl]-tetramethyldisiloxane;
[0034] 3) Mix 13g of 1,3-bis[3-(2,3-epoxypropoxy)propyl]-tetramethyldisiloxane and 58g of methanol, and add 20μL of trifluoromethyl under N2 protection Sulfonic acid, after reacting at 70°C under reflux for 6 hours, adjust the pH to 7, continue the reaction for 1 ho...
Embodiment 2
[0039] 1) React 47.9g of chloropropylmethyldichlorosilane and 18g of water in the organic solvent ether for 3 hours, wash with water until neutral, dry with anhydrous calcium chloride, remove the organic solvent ether by distillation at atmospheric pressure, and distill under reduced pressure to obtain 2, 4,6-tris(3-chloropropyl)-2,4,6-trimethyl-cyclotrisiloxane;
[0040] 2) Dissolve 40.50g of allyl glycidyl ether in toluene, add 20 μL of catalyst chloroplatinic acid, raise the temperature to 80°C, slowly add 46.85g of tetramethyldisiloxane dropwise under stirring, and continue the reaction at 120°C for 6 h Afterwards, underpressure distillation obtains 1,3-bis[3-(2,3-epoxypropoxy)propyl]-tetramethyldisiloxane;
[0041] 3) Mix 13g of 1,3-bis[3-(2,3-epoxypropoxy)propyl]-tetramethyldisiloxane and 58g of methanol, and add 20μL of trifluoromethyl under N2 protection Sulfonic acid, after reacting at 70°C under reflux for 6 hours, adjust the pH to 7, continue the reaction for 1 hou...
Embodiment 3
[0046] 1) React 47.9g of chloropropylmethyldichlorosilane and 18g of water in the organic solvent ether for 3 hours, wash with water until neutral, dry with anhydrous calcium chloride, remove the organic solvent ether by distillation at atmospheric pressure, and distill under reduced pressure to obtain 2, 4,6-tris(3-chloropropyl)-2,4,6-trimethyl-cyclotrisiloxane;
[0047] 2) Dissolve 40.50 g of allyl glycidyl ether in toluene, add 20 μL of catalyst chloroplatinic acid, raise the temperature to 80 °C, slowly add 20.30 g of tetramethyldisiloxane dropwise under stirring, and continue the reaction at 120 °C for 6 h Afterwards, underpressure distillation obtains 1,3-bis[3-(2,3-epoxypropoxy)propyl]-tetramethyldisiloxane;
[0048] 3) Mix 13g of 1,3-bis[3-(2,3-epoxypropoxy)propyl]-tetramethyldisiloxane and 58g of methanol, and add 20μL of trifluoromethyl under N2 protection Sulfonic acid, after reacting at 70°C under reflux for 6 hours, adjust the pH to 7, continue the reaction for 1...
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