Patent ID: 7786336
Filing Date: 2010-08-31
Classification: B01J,C07C,C08F,Y02P

Abstract:
1. A catalyst composition for ethylene oligomerization, the composition comprising a chromium compound, ligands containing P and N, an activator and accelerator, wherein the chromium compound is selected from the group consisting of acetyl acetone chromium, THF-chromium chloride and Cr(2-ethylhecanoate) 3 ; the general formula of the ligand containing P and N is shown as: in which R the activator is selected from the group consisting of methylaluminoxane, ethylaluminoxane, propylaluminoxane and butylaluminoxane; the accelerator is selected from the group consisting of 1,1,2,2-tetrachloroethane, 1,1,2,2-tetrabromoethane, 1,1,2,2,-tetrafluoroethane and compounds having a formula of X the molar ratio of the chromium compound:the ligand containing P and N:the activator:the accelerator is 1:0.5-10:50-3000:0.5-10.