Method for preparing two-block non-iron polymerizable polyurethane surfactant
A surfactant, non-ionic technology, used in the field of surfactant preparation, can solve the problem of not being able to participate in the polymerization of hydrophilic components, and achieve the effect of high surface activity
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Embodiment 1
[0019] Dry the 250ml four-necked bottle, stirrer, feeding tube and other instruments at 120°C for 2 hours, take it out and place it in a desiccator to cool. Add 20.0g of polyoxyethylene ether with a molecular weight of 1,000 and a vinyl end to a 250ml four-necked bottle with a stirrer and a thermometer, heat it to 80°C while stirring, add 0.01g of dibutyltin dilaurate, stir and mix for 10 Minutes, then 3.48 g of toluene diisocyanate (TDI) was added dropwise. After reacting for 2 hours, 20.0 g of polyoxypropylene ether with a molecular weight of 1,000 was added, and the reaction was continued for 2 hours. Then it was cooled to 30° C., 173.9 g of distilled water was added, stirred and mixed for 0.5 hour, and the mixture was discharged to obtain a two-block polymerizable nonionic polyurethane polymer surfactant with a solid content of 20%.
Embodiment 2
[0021] Dry the 250ml four-necked bottle, stirrer, feeding tube and other instruments at 120°C for 2 hours, take it out and place it in a desiccator to cool. Add 20.0g of polyoxyethylene ether with a molecular weight of 1,000 and a vinyl end to a 250ml four-necked bottle equipped with a stirrer and a thermometer, heat it to 80°C while stirring, add 0.02g of dibutyltin dilaurate, stir and mix for 10 Minutes, then 3.48 g of toluene diisocyanate (TDI) was added dropwise. After reacting for 2 hours, 40.0 g of polyoxypropylene ether with a molecular weight of 2,000 was added, and the reaction was continued for 2 hours. Then it was cooled to 30° C., 148.1 g of distilled water was added, stirred and mixed for 0.5 hour to discharge, and a diblock polymerizable nonionic polyurethane polymer surfactant with a solid content of 30% was obtained.
Embodiment 3
[0023] Dry the 250ml four-necked bottle, stirrer, feeding tube and other instruments at 120°C for 2 hours, take it out and place it in a desiccator to cool. Add 10.0g of polyoxyethylene ether with a molecular weight of 1,000 and a vinyl end to a 250ml four-neck bottle equipped with a stirrer and a thermometer, heat to 70°C while stirring, add 0.02g of dibutyltin dilaurate, stir and mix for 10 Minutes, then 1.74 g of toluene diisocyanate (TDI) was added dropwise. After reacting for 2 hours, 30.0 g of polyoxypropylene ether with a molecular weight of 3,000 was added, and the reaction was continued for 2 hours. Then it was cooled to 30° C., 166.9 g of distilled water was added, stirred and mixed for 0.5 hour to discharge, and a two-block polymerizable nonionic polyurethane polymer surfactant with a solid content of 20% was obtained.
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Abstract
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