Tetrasiloxane dimeric surfactant containing sugar acylamino and preparation method
A technology containing sugar amide group and tetrasiloxane, which is applied in the field of organosilicon compound preparation, can solve problems such as affecting the use performance and losing surface activity, and achieves the effect of good adsorption performance and difficult hydrolysis
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[0032] Example 1
[0033] Add 1.62kg of hexamethyldisiloxane, 1.99kg of chloropropyltrimethoxysilane, 0.006kg of concentrated sulfuric acid to the reactor 1, and react at a temperature of 40℃ for 4 hours, add sodium hydroxide to deactivate the catalyst, and filter The solid was removed, and chloropropyl tetrasiloxane was obtained by distillation under reduced pressure. Add 3.73 kg of chloropropyl tetrasiloxane and 0.74 kg of 1,3-propanediamine into the reactor 2, heat to 60°C, react for 4 hours, the mixture is allowed to stand for stratification, and the upper layer is distilled under reduced pressure to obtain N-β -Aminopropyl-γ-aminopropyltetrasiloxane. Add 4.10 kg of N-β-aminopropyl-γ-aminopropyl tetrasiloxane and 1.78 kg of gluconolactone into the reactor 3, use methanol as a solvent, heat to 60° C., and react for 8 hours. Then 0.87 kg of ethylene glycol diglycidyl ether was added, and the reaction was continued for 12 hours. The solvent methanol is evaporated to obtain a ...
Example Embodiment
[0034] Example 2
[0035] Add 8.12kg of hexamethyldisiloxane, 1.99kg of chloropropyltrimethoxysilane, and 0.10kg of acid clay into the reactor 1, and react for 4 hours at a temperature of 50°C, filter to remove the catalyst, and distill under reduced pressure to obtain chloropropyl 基tetrasiloxane. Add 3.73 kg of chloropropyl tetrasiloxane and 2.64 kg of 1,4-butanediamine to the reactor 2, heat to 80°C, react for 3 hours, the mixture is allowed to stand for stratification, and the upper layer is distilled under reduced pressure to obtain N-β -Aminobutyl-γ-aminopropyl tetrasiloxane. Add 4.24 kg of N-β-aminobutyl-γ-aminopropyl tetrasiloxane and 1.96 kg of gluconic acid to the reactor 3, using ethanol as a solvent, heating to 70° C., and reacting for 8 hours. Then add 0.94 kg of propylene glycol diglycidyl ether, and continue the reaction for 12 hours. The solvent ethanol is evaporated to obtain a tetrasiloxane gemini surfactant containing sugar amide groups. It is measured that i...
Example Embodiment
[0036] Example 3
[0037] Add 16.24kg of hexamethyldisiloxane, 1.99kg of chloropropyltrimethoxysilane, 0.54kg of concentrated sulfuric acid into the reactor 1, and react at 60℃ for 4 hours. Add sodium hydroxide to deactivate the catalyst, and filter The solid was removed, and chloropropyl tetrasiloxane was obtained by distillation under reduced pressure. Add 3.73 kg of chloropropyl tetrasiloxane and 6.12 kg of 1,5-pentanediamine into the reactor 2, heat to 90°C, react for 2 hours, the mixture is allowed to stand for stratification, and the upper layer is distilled under reduced pressure to obtain N-β -Aminopentyl-γ-aminopropyltetrasiloxane. Add 4.38 kg of N-β-aminopentyl-γ-aminopropyl tetrasiloxane and 1.78 kg of mannonic acid lactone into the reactor 3, using methanol as a solvent, heating to 80°C, and reacting for 10 hours. Then 1.01 kg of butanediol diglycidyl ether was added, and the reaction was continued for 12 hours. The solvent methanol is evaporated to obtain a tetras...
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