Method for synthesizing aliphatic alcohol polyethenoxy ether carboxylate
A technology of alcohol polyoxyethylene ether carboxylate and alcohol polyoxyethylene ether, which is applied in the field of synthesis of anionic surfactants in organic chemistry, and can solve the problem that by-product water and inorganic salt are not easily removed, the product conversion rate is not high, and the process Complicated and other problems, to achieve the effect of high conversion rate, low equipment investment and simple process
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Embodiment 1
[0020] Example 1: Weigh 1000mol of dodecyl alcohol polyoxyethylene (3) ether, 1000kg of sodium ethoxide in a reactor, heat up to 50-80°C, slowly add 1000mol of sodium chloroacetate, react for 10.0h, add sodium hydroxide and ethanol Adjust the pH value of the solution to be neutral, dissolve the product in hot ethanol, filter while hot to remove the inorganic salt, and dry in vacuum to obtain sodium lauryl lauryl alcohol polyoxyethylene (3) ether acetate as a white solid.
[0021] The reaction equation of above-mentioned embodiment is:
[0022] C 12 h 25 O(CH 2 CH 2 O) 3 H+ClCH 2 COONa+C 2 h 5 ONa→
[0023] C 12 h 25 O(CH 2 CH 2 O) 3 CH 2 COONa+C 2 h 5 OH+NaCl
Embodiment 2
[0024] Example 2: Weigh 1,000 mol of stearyl polyoxyethylene (25) ether, 2,000 mol of potassium ethylate in a reactor, heat up to 50-80° C., slowly add 2,000 mol of potassium chloroacetate, react for 6.0 h, add potassium hydroxide ethanol Adjust the pH value of the solution to be neutral, dissolve the product in hot ethanol, filter while hot to remove the inorganic salt, and dry in vacuum to obtain potassium acetate of stearyl polyoxyethylene (25) ether as a white solid.
[0025] The reaction equation of above-mentioned embodiment is:
[0026] C 18 h 25 O(CH 2 CH 2 O) 25 H+ClCH 2 COOK+C 2 h 5 OK→
[0027] C 18 h 25 O(CH 2 CH 2 O) 25 CH 2 COOK+C 2 h 5 OH+KCl
Embodiment 3
[0028] Example 3: Weigh 1000mol tetradecyl polyoxyethylene (10) ether, 1500mol potassium ethylate in a reactor, heat up to 50-80°C, slowly add 1500mol sodium chloroacetate, react for 4.0h, add sodium hydroxide ethanol Adjust the pH value of the solution to be neutral, dissolve the product in hot ethanol, filter while hot to remove inorganic salts, and dry in vacuo to obtain sodium tetradecyl alcohol polyoxyethylene (10) ether acetate as a white solid.
[0029] The reaction equation of above-mentioned embodiment is:
[0030] C 14 h 25 O(CH 2 CH 2 O) 10 H+ClCH 2 COONa+C 2 h 5 OK→
[0031] C 14 h 25 O(CH 2 CH 2 O) 10 CH 2 COONa+C 2 h 5 OH+KCl
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