Copolymer of furan glycidyl ether or ester and carbon dioxide, and preparation thereof
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preparation Embodiment 1
[0034] at a purity of 99.99% N 2 Add 0.000977mol Y(CCl 3 COO) 3 , 40ml 1,3-dioxolane and 0.00977mol glycerol, to be Y (CCl 3 COO) 3 After all dissolved, slowly add 0.01954mol ZnEt dropwise to the preparation bottle 2 , ZnEt 2 It is advisable to control the reaction temperature at 35-45°C for the dropping speed. ZnEt 2 After the dropwise addition, after no gas is released, place the preparation bottle in a constant temperature bath for aging. The aging conditions are: the temperature of the constant temperature bath is 60°C; the frequency of mechanical oscillation is 150 times / min; the amplitude is 40mm; A total of 2 hours was carried out to obtain a white suspension liquid which was a rare earth three-way catalyst.
preparation Embodiment 2
[0036] The synthesis of furyl methyl glycidyl ether, in the there-necked flask equipped with electric stirrer, thermometer and constant pressure dropping funnel, add 7.6mol epichlorohydrin, 800mL sodium hydroxide solution (50%w / w), and 0.076mol tetra-tert-butylammonium bisulfate, and then 3.8mol of purified furanmethanol was dropped into the above-mentioned three-necked flask at a rate of 6mL / min under a constant pressure dropping funnel under strong stirring at 400rpm, and the temperature of the control system did not exceed 20°C , After reacting for 4 hours, the reaction solution was washed with distilled water until neutral, and the obtained organic phase was dried for 24 hours with 60 g of anhydrous magnesium sulfate, and the dried organic phase was filtered to remove anhydrous magnesium sulfate. The obtained organic phase was distilled off under reduced pressure (2.0KPa) to remove unreacted epichlorohydrin to obtain a crude product of furyl methyl glycidyl ether. The crud...
preparation Embodiment 3
[0038] Synthesis of Glycidyl Tetrahydrofurancarboxylate
[0039] 1) Synthesis of sodium tetrahydrofuran formate, 1.0 mol of sodium hydroxide and 40 ml of distilled water were added to a three-necked flask, then 1.1 mol of tetrahydrofuran formic acid and 80 mL of ethanol (99.5% in purity) were mixed with 6 mL of tetrahydrofuran formic acid through a constant pressure dropping funnel under vigorous stirring at 450 rpm. Drop into the above-mentioned three-necked flask at a rate of 1 / min, control the system temperature at 25°C, and react for 4 hours, distill off ethanol and water, wash with acetone 3 times, each time with 100mL, and vacuum dry at 70°C to constant weight. Sodium tetrahydrofuran formate was obtained.
[0040] 2) Synthesis of glycidyl tetrahydrofuran formate Add 1.0 mol sodium tetrahydrofuran formate, 5.0 mol epichlorohydrin, and 0.015 mol tetra-tert-butyl ammonium bisulfate to a three-necked flask equipped with a spherical condenser, heat with an oil bath, and contr...
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