Soybean lecithin ethoxylation catalyst and synthesis method of soybean lecithin ethoxylate
A soybean phospholipid, ethoxylation technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the limitation of application scope, soybean phospholipid ethoxylation Problems such as deep chromaticity of chemical substances, to achieve the effect of reducing chromaticity
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Embodiment 1
[0044] Put 200 g of soybean lecithin, 50 g of palmityl alcohol, 1.40 g of potassium hydroxide, and 0.42 g of gallium oxide into a dry 2L reactor with stirring, electric heating jacket and internal water cooling coil, and seal the reactor. Replace the air in the reactor with nitrogen for three times, start stirring, heat up to 85°C and carry out vacuum treatment under the pressure of -0.08MPa for 60min, then heat up to 145°C and maintain this temperature, and slowly introduce 200g of ethylene oxide, Keep the reaction pressure at 0.2MPa by controlling the speed of ethylene oxide, mature at 145°C for 1 hour, then vacuum the reactor at -0.08MPa for 30min and cool it to 60°C at the same time, stop stirring, and open the reactor Obtain soybean lecithin ethoxylate.
[0045] The compositions of the catalysts used and the chromaticity of the ethoxylates are shown in Table 1.
Embodiment 2
[0047]Put 200 g of soybean lecithin, 50 g of palmityl alcohol, 1.40 g of potassium hydroxide, and 0.42 g of indium oxide into a dry 2L reactor with stirring, electric heating jacket and internal water cooling coil, and seal the reactor. Replace the air in the reactor with nitrogen for three times, start stirring, heat up to 85°C and carry out vacuum treatment under the pressure of -0.08MPa for 60min, then heat up to 145°C and maintain this temperature, and slowly introduce 200g of ethylene oxide, Keep the reaction pressure at 0.2MPa by controlling the speed of ethylene oxide, mature at 145°C for 1 hour, then vacuum the reactor at -0.08MPa for 30min and cool it to 60°C at the same time, stop stirring, and open the reactor Obtain soybean lecithin ethoxylate.
[0048] The compositions of the catalysts used and the chromaticity of the ethoxylates are shown in Table 1.
Embodiment 3
[0050] Put 200g of soybean lecithin, 50g of palm alcohol, 1.40g of potassium hydroxide, and 0.42 of tetrabutyl titanate into a dry 2L reactor with stirring, electric heating jacket and internal water cooling coil, and seal the reactor. Replace the air in the reactor with nitrogen for three times, start stirring, heat up to 85°C and carry out vacuum treatment under the pressure of -0.08MPa for 60min, then heat up to 145°C and maintain this temperature, and slowly introduce 200g of ethylene oxide, Keep the reaction pressure at 0.2MPa by controlling the speed of ethylene oxide, mature at 145°C for 1 hour, then vacuum the reactor at -0.08MPa for 30min and cool it to 60°C at the same time, stop stirring, and open the reactor Obtain soybean lecithin ethoxylate.
[0051] The compositions of the catalysts used and the chromaticity of the ethoxylates are shown in Table 1.
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