Preparation method of soybean oil base polyhydric alcohol
A technology of soybean oil-based polyols, which is applied in the preparation of organic compounds, carboxylic acid esters, chemical instruments and methods, etc., can solve the problems of increasing the production cost of soybean oil-based polyols, and achieve consumption saving and production cost reduction , reducing the effect of post-processing steps
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Publication Date
- 2018-07-06
- Estimated Expiration
- Not applicable · inactive patent
Abstract
Description
technical field
[0001] The invention relates to a preparation method of soybean oil-based polyol, in particular to a preparation method of soybean oil-based polyol directly synthesized from soybean oil. Background technique
[0002] Due to the increasing scarcity of petrochemical resources, replacing petroleum feedstock production with bio-based materials has become a hot research topic. Compared with petroleum polyols, biomass polyols consume less energy, consume less non-renewable resources, and emit less greenhouse gases. They are very rare biomass materials. With the continuous improvement of vegetable oil extraction technology, people's ability to modify vegetable oil is getting stronger and stronger, and this kind of degradable natural biological material has attracted more and more attention. Soybean oil is the cheapest and most readily available vegetable oil with excellent physical and chemical properties. Vegetable oil-based polyols obtained from soybean oil are ...
Examples
Embodiment 1
[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...
Embodiment 2
[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...
Embodiment 3
[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...