Preparation method of functionalized polypropylene copolymer

[0016] Example 1

[0017] Add imidazole (0.25 mol) in absolute ethanol (40 mL) to o-dichlorobenzene (0.1 mol) in methanol (20 mL). A few drops of 5% sodium hydroxide in ethanol were added to the reaction mixture. Reflux for 8 hours at 80°C and then allow it to stay overnight. The sodium chloride was filtered, the filtrate was evaporated and ethanol recrystallized, and the yield of 1,2-diimidazole benzene was 89%.

[0018] Example 2

[0019] Take a 100ml reaction kettle, add 50ml tetrahydrofuran, add 190mg 1,2-diimidazobenzene, add 305mg NiBr2 (DME), stir for 12 hours, and spin off the solvent to obtain a pale yellow powder as 1,2-diimidazobenzene cobalt bromide. The yield was 97%.

[0020] Example 3

[0021] A dry 250ml autoclave with a magnetic stir bar was replaced with nitrogen for three times and propylene for two. Heat the oil bath to 50℃, add 100ml of toluene, 1ml of 7-octene-1 alcohol, 4ml of MAO, start stirring, use a syringe to add 1.2mmol 1,2-diimidazobenzene cobalt bromide catalyst, use a solenoid valve to control the propylene pressure of the system Keep 1.03×10 6 Pa, start propylene copolymerization. After 30 minutes, the propylene valve was closed, treated with acid alcohol, and filtered to obtain 9.8 g of copolymer.