Linear-hyperbranched phosphate salt surface active agent and preparation method thereof
A technology of surfactants and phosphate ester salts, applied in chemical instruments and methods, organic chemistry, phosphorus organic compounds, etc., can solve the problems of surfactant application limitations
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Embodiment 1
[0037] 1. Preparation of hydroxyl-terminated hyperbranched polymers:
[0038] Add diethanolamine and methyl acrylate in a molar ratio of 1:2 to a reactor containing 10 mL of methanol solution, raise the temperature to 30°C, keep the temperature for 4 hours, remove methanol and excess methyl acrylate by vacuuming, and prepare AB 2 Monomer (methyl N,N-dihydroxyethyl-3-aminopropionate).
[0039] In the monomer prepared above, add pentaerythritol, the molar ratio of pentaerythritol to monomer is 1:4, then add p-toluenesulfonic acid with a total mass fraction of 0.5% in the reactor, mix and heat to 110°C, mix well After heating up to reflux, react for 6h, after cooling the reaction, dissolve in CH 2 Cl 2 Washing, suction filtration under reduced pressure for 3 times, and rotary evaporation to produce a hydroxyl-terminated hyperbranched polymer.
[0040] 2. Preparation of linear-hyperbranched polymers:
[0041] Add 50mL of pyridine solution in the reactor, remove the moisture in...
Embodiment 2
[0045] 1. Preparation of hydroxyl-terminated hyperbranched polymers:
[0046]Add diethanolamine and methyl acrylate in a molar ratio of 1:3 to a reactor containing 15 mL of methanol solution, raise the temperature to 50°C, keep the temperature for 5 hours, remove methanol and excess methyl acrylate by vacuuming, and prepare AB 2 Monomer (methyl N,N-dihydroxyethyl-3-aminopropionate).
[0047] Add pentaerythritol to the monomer prepared above, the molar ratio of pentaerythritol to monomer is 1:4, then add concentrated sulfuric acid with a total mass fraction of 1.0% in the reactor, mix and heat to 120°C, mix well and then heat up Reflux, react for 6h, after cooling the reaction, dissolve in CH 2 Cl 2 Washing, suction filtration twice under reduced pressure, and rotary evaporation to produce a hydroxyl-terminated hyperbranched polymer.
[0048] 2. Preparation of linear-hyperbranched polymers:
[0049] Add 60mL of pyridine solution in the reactor, remove the moisture in the re...
Embodiment 3
[0053] 1. Preparation of hydroxyl-terminated hyperbranched polymers:
[0054] Add diethanolamine and methyl acrylate in a molar ratio of 1:2 to a reactor containing 15 mL of methanol solution, raise the temperature to 35°C, keep the temperature for 4 hours, remove methanol and excess methyl acrylate by vacuuming, and prepare AB 2 Monomer (methyl N,N-dihydroxyethyl-3-aminopropionate).
[0055] In the monomer prepared above, add pentaerythritol, the molar ratio of pentaerythritol to monomer is 1:5, then add hydrochloric acid with a total mass fraction of 0.6% in the reactor, mix and heat to 120°C, mix well and then heat up to reflux , reacted for 6h, cooled the reaction, dissolved in CH 2 Cl 2 Washing, suction filtration under reduced pressure for 3 times, and rotary evaporation to produce a hydroxyl-terminated hyperbranched polymer.
[0056] 2. Preparation of linear-hyperbranched polymers:
[0057] Add 60mL of pyridine solution in the reactor, remove the moisture in the rea...
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