Preparation method of functionalized polypropylene copolymer
A polypropylene copolymer, functionalized technology, applied in the field of preparation of functionalized polypropylene copolymer, to achieve the effects of enhancing printing and dyeing properties, expanding application fields, and improving compatibility
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Embodiment 1
[0017] Add o-dichlorobenzene (0.1 mol) in methanol (20 mL) dropwise with imidazole (0.25 mol) in absolute ethanol (40 mL). A few drops of 5% sodium hydroxide in ethanol were added to the reaction mixture. Reflux at 80°C for 8 hours and then allow overnight. The sodium chloride was filtered, the filtrate was evaporated and recrystallized from ethanol, the yield of 1,2-diimidazobenzene was 89%.
Embodiment 2
[0019] Take a 100ml reactor, add 50ml tetrahydrofuran, add 190mg 1,2-diimidazolium benzene, add 305mg NiBr2 (DME), stir for 12 hours, spin off the solvent, and obtain a light yellow powder as 1,2-diimidazolium cobalt bromide, Yield 97%.
Embodiment 3
[0021] A dry 250ml autoclave with a magnetic stirring bar was replaced three times with nitrogen and twice with propylene. Heat the oil bath to 50°C, add 100ml of toluene, 1mL of 7-octen-1 alcohol, 4ml of MAO, start stirring, add 1.2mmol of 1,2-diimidazolium benzene cobalt bromide catalyst with a syringe, and control the propylene pressure of the system with a solenoid valve Keep 1.03×10 6 Pa, start to carry out propylene copolymerization. After 30 minutes, the propylene valve was closed, treated with acid alcohol, and filtered to obtain 9.8 g of copolymer.
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