C=C.[CH2:3]=[CH:4]C.[CH:6]([CH:8]1[CH2:13][CH:12]2[CH2:14][CH:9]1[CH:10]=[CH:11]2)=[CH2:7].[CH:15](=[C:17]1[CH2:22][CH:21]2[CH2:23][CH:18]1[CH:19]=[CH:20]2)[CH3:16].[H][H].[Al](Cl)(CC)CC>CCCCCC>[CH2:3]=[CH2:4].[CH2:7]=[CH:6][CH3:8].[CH:15]([CH:17]1[CH2:22][CH:21]2[CH2:23][CH:18]1[CH:19]=[CH:20]2)=[CH2:16].[CH:6](=[C:8]1[CH2:13][CH:12]2[CH2:14][CH:9]1[CH:10]=[CH:11]2)[CH3:7]In a 100-liter stainless steel polymerization reactor equipped with a stirring blade (number of stirring revolutions: 250 rpm), tetrapolymerization of ethylene, propylene, 5-vinyl-2-norbornene and 5-ethylidene-2-norbornene was continuously carried out. To the liquid phase in the reactor were fed hexane at a rate of 60 l/hr, ethylene at a rate of 3.0 kg/hr, propylene at a rate of 8.5 kg/hr, 5-vinyl-2-norbornene at a rate of 370 g/hr and 5-ethylidene-2-norbornene at a rate of 470 g/hr, and were further continuously fed hydrogen at a rate of 50N l /hr and as catalysts VOCl3 at a rate of 90 mmol/hr, Al(Et)2Cl at a rate of 420 mmol/hr and Al(Et)1.5Cl1.5 at a rate of 120 mmol/hr, through the side inlet of the reactor.
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