Application of strong basic anion exchange resin in preparation of quaternary ammonium salt of hydroxyl-terminated polyether
A technology of hydroxyl-terminated polyether and exchange resin, which is applied in the preparation of polyether quaternary ammonium salt, and the application field of strong basic anion exchange resin in the preparation of hydroxyl-terminated polyether quaternary ammonium salt, which can solve the problem that the product is not easy to purify and the process is complicated and other problems, to achieve the effect of simplification of separation technology, small polydispersity coefficient and high product
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[0046] (2), yield polyethers containing terminal hydroxyl high purity quaternary ammonium salt prepared by the method of the present invention provides a prepared.
[0047] (3) halogenated N, N, N- trialkyl -N- (β- hydroxyethyl) ammonium salt as a starting material, prepared using the method of the present invention, the resulting terminal hydroxyl groups-containing polyether quaternary polydispersity small.
[0048] (4) based on the needs and halogenated alkylene oxides may be N, N, N- trialkyl -N- (β- hydroxyethyl) ammonium with a ratio regulation length of the terminal hydroxyl-containing polyethers or polyether chain quaternary ammonium salts containing size terminal hydroxyl polyethers an average molecular weight quaternary ammonium salt.
Embodiment 1
[0050] Weigh 21 g benzyl chloride N- -N, N- dimethyl -N- (β- hydroxyethyl) ammonium and 40 grams dehydrated 201 * 7 type strongly basic anion exchange resin ( Shanghai Blue Run Chemical Co., Ltd. ) Was dispersed in a mixed solvent of diethyl ether and 50 g of ethanol and 50 g of ethylene glycol was stirred at room temperature for 30 minutes, the ion exchange resin was recovered by filtration; the resulting filtrate into a distillation kettle temperature to reflux distillation, azeotropic distillation to be divisible after water and ethanol, cooling into an autoclave, deoxygenated nitrogen for 3 minutes, 5 g of ethylene oxide into the press, control the autoclave reaction mass temperature 100 ℃, ring opening polymerization initiator, high-pressure reactor the pressure may be raised to 0.26MPa, when the polymerization temperature is a constant 100 ~ 110 ℃, high pressure reaction kettle began to fall, thereafter continuously feeding ethylene oxide to the autoclave 50 grams, after the...
Embodiment 2
[0052] In accordance with the method and procedure of Example 1, benzyl chloride N- -N, N- dimethyl -N- (β- hydroxyethyl) ammonium bromide, 33 g of N- change-dodecyl -N , N- dimethyl -N- (β- hydroxyethyl) ammonium, can be prepared as a pale yellow waxy N- dodecyl -N, N- dimethyl -N- (α- hydroxy polyether ) ammonium acetate, in accordance with the GB / T 30915-2014 method, by analyzing the measured hydroxyl value obtaining 84.73mgKOH / g (in accordance with the amount of ethylene oxide calculated hydroxyl value thereof should be around 88mgKOH / g).
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