Novel organosilicone corrosion inhibitor composition and preparation method thereof
A technology of corrosion inhibitor and composition, applied in the direction of anti-corrosion coatings, coatings, etc., can solve the problems of weak temperature adaptability, unstable film formation on the surface of metal internal components, etc., achieve strong hydrophobicity, improve electron donating ability, high The effect of adsorption activity
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[0029] Example 1
[0030] Take 10g of methylphenyl hydrogen-containing polysiloxane with an average molecular weight of 2000 (active hydrogen content of 0.5wt%, phenyl content of 1.5~2.5wt%), 0.7g of 2-hydroxybenzimidazole and 0.4g of hydroxyimidazole, Add it to a round bottom flask containing 350mL n-heptane, stir continuously while heating up to 75±5℃ in a constant temperature water bath, then add about 10 drops of 0.05mol / L chloroplatinic acid isopropanol solution with a dropper, the reaction process Under nitrogen protection for 5 hours, the reaction mixture was distilled under reduced pressure to remove the solvent n-heptane. Then inject 400 mL of toluene into the flask, continue to stir, add about 1 g of hydroxyethyl ethylene diamine, continue to heat up to 90 ± 5 ℃, drop about 5 g of 0.1 mol / L sodium hydroxide solution, fully react for 2 hours, The reaction mixture was distilled under reduced pressure to remove the solvent toluene and then filtered to remove the insoluble...
Example Embodiment
[0031] Example 2
[0032] Take 10g of methylphenyl hydrogen-containing polysiloxane with an average molecular weight of 2000 (active hydrogen content of 0.3wt%, phenyl content of 2~2.5wt%), 0.70g of 2-hydroxybenzimidazole and 0.40g of hydroxyimidazole, Add it to a round bottom flask containing 350mL n-heptane, stir continuously while heating up to 70±5℃ in a constant temperature water bath, then use a dropper to add about 15 drops of 0.05mol / L chloroplatinic acid isopropanol solution, the reaction process Under nitrogen protection for 6 hours, the reaction mixture was distilled under reduced pressure to remove the solvent n-heptane. Then inject 350ml of toluene into the flask, continue to stir, while adding about 1.5g of hydroxyethyl ethylene diamine, continue to heat up to 90 ± 5 ℃, drip 5g of 0.1mol / L potassium hydroxide solution, fully react for 1.5 hours, The reaction mixture was distilled under reduced pressure to remove the solvent toluene, and then filtered to remove the ...
Example Embodiment
[0033] Example 3
[0034] Take 10g of methylphenyl hydrogen-containing polysiloxane with an average molecular weight of 1500 (active hydrogen content of 0.5wt%, phenyl content of 1.5~2.5wt%), 0.75g of 2-hydroxybenzimidazole and 0.5g of hydroxyimidazole, Add to a round bottom flask containing 350mL n-heptane, stir continuously while heating up to 70±5℃ in a constant temperature water bath, and then add about 10 drops of 0.05mol / L chloroplatinic acid isopropanol solution with a dropper. The reaction process Under nitrogen protection for 5 hours, the reaction mixture was distilled under reduced pressure to remove the solvent n-heptane. Then inject 400 mL of toluene into the flask, continue to stir, add about 1 g of hydroxyethyl ethylene diamine, continue to heat up to 90 ± 5 ℃, drop about 5 g of 0.1 mol / L sodium hydroxide solution, fully react for 2 hours, The reaction mixture was distilled under reduced pressure to remove the solvent toluene and then filtered to remove the insolub...
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