| abstract |
The present invention relates to a catalyst, which is a complex selected from the group consisting of bis(1,1,1-trifluoro-2,4-pentanedionato)titanium dichloride: bis(2,2-dimethyl-3,5-hexanedionato)titanium dichloride; bis(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato)titanium dichloride: bis(1,1,1-trifluoro-5,5-dimethyl-2,4-hexanedionato)titanium dichloride; bis(2,2,6,6-tetramethyl-3,5-hexanedionato)titanium dichloride; bis(2,2-dimethyl-5-phenyl-3.5-pentanedionato)titanium dichloride: and bis(1,3-diphenyl-1,3-propanedionato)titanium dichloride, wherein said complex is supported on magnesium chloride. |