Vegetable oil polyol and preparation method and application thereof
A technology of vegetable oil polyol and epoxy vegetable oil, applied in the field of vegetable oil polyol and its preparation, can solve the problems of low quality of vegetable oil polyol, prone to cross-linking side reactions, cumbersome post-processing, etc., to reduce cross-linking side reactions , increased fluidity and good stability
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Embodiment 1
[0039] 18.5g of Ni / SiO 2 -Al 2 o 3 (65wt.%) and 78.90g of dimethylamine in tetrahydrofuran (60wt.%, about 1.05mol of dimethylamine) were added to the tank reactor and stirred, and the temperature rose to 120°C; 2 , to keep the pressure in the reactor at 7.0Mpa. After the reaction conditions were stable, 545g of glucose aqueous solution (33wt.%, 1mol of glucose) was added into the reactor, the feed rate was 10mL / min, and the reaction time was 2h. After the glucose catalytic reduction ammonolysis reaction is completed, the obtained mixed solution containing the polyhydroxy compound of formula III and formula IV is placed in the liquid storage tank A.
[0040] 191g of epoxidized soybean oil prepared according to the preparation method of Chinese patent 2014104412890 (the number of epoxy groups is 0.8mol, and the iodine value is 10) and 0.153g of sodium carbonate are dissolved in 1000mL of tetrahydrofuran solution and placed in liquid storage tank B . The temperature of the o...
Embodiment 2
[0042] 15.5g of Ni / SiO 2 -Al 2 o 3 (65wt.%) and 70.74g of dimethylamine in tetrahydrofuran (65wt.%, about 1.02mol of dimethylamine) were added to the tank reactor and stirred, and the temperature rose to 120°C; 2 , keep the pressure in the reactor at 6.5Mpa. After the reaction conditions were stable, 600 g of glucose aqueous solution (30wt.%, 1 mol of glucose) was added to the reactor at a feeding rate of 10 mL / min, and the reaction time was 2 h. After the glucose catalytic reduction ammonolysis reaction is completed, the obtained mixed solution containing the polyhydroxy compound of formula III and formula IV is placed in the liquid storage tank A.
[0043] Dissolve 232g epoxy peanut oil (the number of its epoxy group is 0.9mol, iodine value is 13) and 0.186g sodium bicarbonate prepared according to the preparation method of Chinese patent 2014104412890 in 1250mL tetrahydrofuran solution, and place in liquid storage tank B . The temperature of the oil bath was adjusted t...
Embodiment 3
[0045] 23.0g of Ni / SiO 2 -Al 2 o 3 (65wt.%) and 64.40g of dimethylamine in tetrahydrofuran (70wt.%, about 1mol of dimethylamine) were added to the tank reactor and stirred, and the temperature rose to 110°C; 2 , to keep the pressure in the reactor at 7.0Mpa. After the reaction conditions were stable, 720 g of glucose aqueous solution (25 wt.%, 1 mol of glucose) was added into the reactor, the feed rate was 8.5 mL / min, and the reaction time was 2.5 h. After the glucose catalytic reduction ammonolysis reaction is completed, the obtained mixed solution containing the polyhydroxy compound of formula III and formula IV is placed in the liquid storage tank A.
[0046] Dissolve 190g epoxy rapeseed oil (its epoxy group number is 0.75mol, iodine value is 15) and 0.152g sodium hydroxide prepared according to the preparation method of Chinese patent 2014104412890 in 1000mL tetrahydrofuran solution, and place liquid storage tank in B. The temperature of the oil bath was adjusted to 9...
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