Method for synthesizing soybean oil-base polyether polyol
A technology of oil-based polyether and synthesis method, which is applied in the field of polymer polymerization, can solve problems that have not been found and reported, and achieve the effects of reducing production costs, meeting environmental protection, and reducing dosage
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Embodiment 1
[0018] A kind of synthetic method of soybean oil-based polyether polyol, its synthetic method is as follows: in the glass kettle of 2L, add soybean oil 500g, the formic acid 68g of 80%, stir 10 minutes, drip the hydrogen peroxide 230g of 30%, over The molar ratio of hydrogen peroxide to soybean oil is 3.7:1, the molar ratio of catalyst carboxylic acid to soybean oil is 2.2:1, react at 50-55°C for 6 hours, raise the temperature to 100-110°C, reflux for 6 hours, stand and separate The acid water was separated, washed with water twice, and vacuumed to reduce the water content to less than 0.10% to obtain hydroxylated soybean oil. The hydroxyl value of the product was detected to be 219 mgKOH / g.
[0019] 520g of the obtained hydroxylated soybean oil and 2.5g of the catalyst were added into the autoclave, the vacuum was reached to the highest level, nitrogen replacement was carried out twice, and then propylene oxide (PO) / ethylene oxide (EO) (9.4 / 0.6 ) mixture 1000g, the reaction t...
Embodiment 2
[0021] A kind of synthetic method of soybean oil-based polyether polyol, its synthetic method is as follows: add soybean oil 500g, 80% formic acid 60g in the glass kettle of 1L, stir 10 minutes, dropwise add 30% hydrogen peroxide 210g, over The molar ratio of hydrogen peroxide to soybean oil is 3.4:1, the molar ratio of catalyst carboxylic acid to soybean oil is 1.9:1, react at 40-50°C for 5 hours, raise the temperature to 100-105°C, reflux for 4 hours, stand and separate The acidic water was separated, washed with water twice, and vacuumed under reduced pressure until the water content was less than 0.10%, to obtain hydroxylated hydroxyl oil. The hydroxyl value of the product was detected to be 201 mgKOH / g.
[0022] 200g of the obtained hydroxylated soybean oil and 2.5g of the catalyst were added into the autoclave, the vacuum was reached to the highest level, nitrogen was replaced twice, and then propylene oxide (PO) / ethylene oxide (EO) (9.4 / 0.6 ) mixture 1000g, the reaction...
Embodiment 3
[0024] A kind of synthetic method of soybean oil-based polyether polyol, its synthetic method is as follows: in the glass kettle of 1L, add soybean oil 500g, 80% formic acid 65g, stir for 10 minutes, dropwise add 30% hydrogen peroxide 240g, pass The molar ratio of hydrogen peroxide to soybean oil is 3.9:1, the molar ratio of catalyst carboxylic acid to soybean oil is 2.3:1, react at 48-55°C for 7 hours, raise the temperature to 100-110°C, reflux for 5 hours, stand and separate The acid water was separated, washed twice with water, and vacuumed to reduce the water content to less than 0.10% to obtain hydroxylated soybean oil. The hydroxyl value of the product was detected to be 227 mgKOH / g.
[0025] 210g of the obtained hydroxylated soybean oil and 2.5g of the catalyst were added into the autoclave, the vacuum was reached to the highest level, nitrogen was replaced twice, and then propylene oxide (PO) / ethylene oxide (EO) (9.4 / 0.6 ) mixture 800g, the reaction time was 3 hours, a...
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