Polymerizable nonionic surfactant containing adamantane structure and preparation method thereof
A technology of non-ionic surfactants and active agents, applied in the field of polymerizable non-ionic surfactants and their preparation, to achieve good water solubility and expand the types and scope of effects
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Embodiment 1
[0031] The present embodiment provides a preparation method of an adamantane structure-containing polymerizable nonionic surfactant, which is specifically as follows:
[0032] Under ice-water bath conditions, take 3.6 g of polyethylene glycol methacrylate (Mw=360, CAS number: 25736-86-1) and 2 g of 1-adamantanecarbonyl chloride, add them into 50 mL of dichloromethane, and after stirring evenly, A dichloromethane solution containing 1.05 g of triethylamine was slowly added dropwise, and after stirring for 4 h, the precipitate was removed by filtration, washed twice with 20 mL of 1% sodium bicarbonate solution and 1% hydrochloric acid in turn, and then separated. Then the oily liquid obtained is the product methacrylate polyethylene glycol 360 adamantyl methyl ester, which is named as A1. figure 1 It is the infrared contrast spectrum of the raw material polyethylene glycol methacrylate and the product A1. Compared with the raw material, the 1728cm in A1 -1 The peak of ester car...
Embodiment 2
[0034] The present embodiment provides a method for preparing an adamantane structure-containing polymerizable nonionic surfactant, which is specifically as follows:
[0035] Under ice-water bath conditions, take 5 g of polyethylene glycol methacrylate (Mw=500) and 2 g of 1-adamantanecarbonyl chloride, add them to 50 mL of dichloromethane, and after stirring evenly, slowly add triethylamine 1.05 g dropwise. The dichloromethane solution was stirred for 4 hours, and the precipitate was removed by filtration. After washing twice with 20 mL of 1% sodium bicarbonate solution and 1% hydrochloric acid, the liquid was separated. Ester polyethylene glycol 500 adamantyl methyl ester.
Embodiment 3
[0037] The present embodiment provides a method for preparing an adamantane structure-containing polymerizable nonionic surfactant, which is specifically as follows:
[0038] Take 3.6 g of polyethylene glycol methacrylate (Mw=360) and 1.8 g of 1-adamantanecarboxylic acid, add them to 50 mL of tetrahydrofuran, stir evenly, and slowly dropwise add a dichloromethane solution containing 1.5 g of thionyl chloride, After refluxing at 60°C for 4 hours, the solvent was evaporated to dryness, then ethyl acetate was added to dissolve it, washed twice with a mixture of sodium bicarbonate and ice-water, and then the liquid was separated. Acrylate polyethylene glycol 360 adamantyl methyl ester.
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