Preparation method of soybean oil base polyhydric alcohol

[0020] Mix ethyl acetate and 102g soybean oil 1:1 and add 3.2g solid strong acid catalyst into a reaction kettle with distillation equipment, reflux equipment, thermometer and feeding equipment, and add 5.50% hydrogen peroxide to the system after heating to 60°C , insulation reaction for 2.5 hours. After the reaction was completed, the solvent was distilled off by distillation under reduced pressure. Add 150g methanol to the reaction kettle, react at 0.3-0.4MPa, 70°C-80°C for 4 hours, stop the reaction, distill off the residual alcohol, remove the solid strong acid catalyst and dry to obtain soybean oil-based polyol.

[0021] Described solid strong acid catalyst is prepared according to the following scheme:

[0022] By weight, 15 parts of polylactic acid, 2 parts of dimer salicylic acid lactone, dissolved in 120 parts of ether, add 1 part of ammonium persulfate, 1 part of 2-hydroxyquinoline-4-carboxylic acid, 0.5 parts Diethylaminoethyl cross-linked sephadex, reacted for 40...

[0025] Mix acetone and 105g soybean oil 1:1 and add 4.1g solid strong acid catalyst into a reaction kettle equipped with distillation equipment, reflux equipment, thermometer and feeding equipment. After the system is heated to 65°C, add 10.20% hydrogen peroxide to it and keep warm React for 3 hours. After the reaction was completed, the solvent was distilled off by distillation under reduced pressure. Add 207g of ethanol to the reaction kettle, react at 0.3-0.4MPa, 70°C-80°C for 4 hours, stop the reaction, distill off the residual alcohol, remove the solid strong acid catalyst and dry to obtain soybean oil-based polyol.

[0026] Described solid strong acid catalyst is prepared according to the following scheme:

[0027] By weight, 10 parts of polylactic acid, 1 part of dimer salicylic acid lactone, dissolved in 100 parts of ether, add 0.5 parts of ammonium persulfate, 0.5 parts of 2-hydroxyquinoline-4-carboxylic acid, 0.1 parts Diethylaminoethyl cross-linked sephadex, react...

[0030] Mix methyl ethyl ketone and 103g soybean oil 1:1 and add 5.2g solid strong acid catalyst into a reaction kettle equipped with distillation equipment, reflux equipment, thermometer and feeding equipment. After the system is heated to 65°C, add 8.3g of 30% hydrogen peroxide to it , insulation reaction for 2.5 hours. After the reaction was completed, the solvent was distilled off by distillation under reduced pressure. Add 302g of methanol into the reaction kettle, react at 0.3-0.4MPa, 70°C-80°C for 4 hours, stop the reaction, distill off the residual alcohol, remove the solid strong acid catalyst and dry to obtain soybean oil-based polyol.

[0031] Described solid strong acid catalyst is prepared according to the following scheme:

[0032] By weight, 20 parts of polylactic acid, 5 parts of dimer salicylic acid lactone, dissolved in 150 parts of ether, add 2 parts of ammonium persulfate, 2 parts of 2-hydroxyquinoline-4-carboxylic acid, 0.9 parts Diethylaminoethyl cross-l...