METHOD OF OBTAINING BUTENE-I

摘要

A method of obtaining butene-I consists in dimerization of ethylene in a hydrocarbon solvent at a temperature of 50-150 DEG C and a pressure of no more than 4 mPa in the presence of a catalyst system. The catalyst system includes tetraalkoxytitanium trialkylaluminium and a modifier. A modifier is used dialkylaluminium halogen of the general formula: AlR2Hal, where R = C2H5, iC4H9; Hal = Cl, Br, J in combination with aliphatic or cyclic ether. The molar ratio of trialkylaluminium to tetraalkoxytitanium equals, respectively, 2.5-7:1.0, the molar ratio of dialkylaluminium halogen to tetraalkoxytitanium equals, respectively, 0.01-1.7:1.0, and the molar ratio of aliphatic or cyclic ether to tetraalkoxytitanium equals, respectively, 1.0-8.0:1.0.