Multifunctional quaternary ammonium cation surface active agent and preparing method and application thereof
A quaternary ammonium salt cation and surfactant technology, applied in the field of fluorescent whitening agents, can solve problems such as lack of innovation, few new material products, and weak independent innovation ability, and achieve high bonding firmness, strong surface activity, and increased white paper effect
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Embodiment 1
[0030] Mix 5mmol 4,4'-diaminostilbene-2,2'-disulfonic acid with 100mL distilled water, stir, ice bath at 5°C, then add 10mmol cyanuric chloride, stir, wash with saturated Na 2 CO 3 The solution maintains the pH of the reaction system at 3, and reacts for 2 hours under temperature control; add dropwise a mixture of 10 mmol dimethyltetradecylamine and 5 mL of acetone, raise the temperature of the reaction system to 30 ° C, stir, and use saturated Na 2 CO 3 The solution maintains the pH of the reaction system at 7, and the temperature is controlled for 4 hours; then 10 mmol of 2-aminoacetic acid is added, the temperature is raised to 90 °C, and saturated Na 2 CO 3 The solution maintained the pH of the reaction system at 9, and the temperature was controlled for 6 hours. Cool to room temperature, add 100mL saturated aqueous sodium chloride solution, stir, filter with suction, and dry in vacuum to obtain a multifunctional quaternary ammonium salt cationic surfactant with a yield...
Embodiment 2
[0032] Mix 5mmol 4,4'-diaminostilbene-2,2'-disulfonic acid with 150mL distilled water, stir, ice bath at 0°C, then add 10mmol cyanuric chloride, stir, wash with saturated Na 2 CO 3 The solution maintains the pH of the reaction system at 4, and reacts for 2 hours under temperature control; add dropwise a mixture of 10 mmol dimethyltetradecylamine and 4 mL of acetone, raise the temperature of the reaction system to 40 ° C, stir, and use saturated Na 2 CO 3 The pH of the solution was maintained at 6, and the temperature was controlled for 4 hours; then 10 mmol of 2-aminoacetic acid was added, the temperature was raised to 100°C, and saturated Na 2 CO 3 The solution maintained the pH of the reaction system at 8, and the temperature was controlled for 6 hours. Cool to room temperature, add 100mL saturated aqueous sodium chloride solution, stir, filter with suction, and dry in vacuum to obtain a multifunctional quaternary ammonium salt cationic surfactant with a yield of 89%.
Embodiment 3
[0034] Mix 5mmol 4,4'-diaminostilbene-2,2'-disulfonic acid with 125mL distilled water, stir, and ice-bath at 3°C, then add 10mmol cyanuric chloride, stir, and wash with saturated Na 2 CO 3 The solution maintains the pH of the reaction system at 3.5, and reacts for 2 hours under temperature control; add dropwise a mixture of 10 mmol dimethyltetradecylamine and 6 mL of acetone, raise the temperature of the reaction system to 35 ° C, stir, and wash with saturated Na 2 CO 3 The solution maintains the pH of the reaction system at 6.5, and the temperature is controlled for 4 hours; then 10 mmol of 2-aminoacetic acid is added, the temperature is raised to 95 °C, and saturated Na 2 CO 3 The solution maintained the pH of the reaction system at 8.5, and the temperature was controlled for 6 hours. Cool to room temperature, add 100mL saturated aqueous sodium chloride solution, stir, filter with suction, and dry in vacuum to obtain a multifunctional quaternary ammonium salt cationic sur...
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