| http://www.w3.org/ns/prov#value | - icon halides, boron halides, aluminum halides, alkyl silicon halides, hexaalkyl disilazanes and mixtures thereof; and (d) contacting the product of said step (c) with a vanadium compound having the structural formula V(O2)X1 4-s, is halogen and s is 0 or 1; a first titanium-containing compound having the structural formula TiX3 p (OR3)q, where X3 is halogen R3 is hydrocarbyl, p is an integer of 1
|
