| abstract |
A composition having the formula (I) where R1 and R2 are independently hydrogen, C1 to C12 linear and branched alkyl, C3 to C12 cycloalkyl, aryl, C1 to C12 alkoxy, F, Cl, SO3 C1 to C12 perfluoroalkyl, and N(CH3)2 R3 is independently selected from the group consisting of hydrogen, C1, to C12 linear and branched alkyl, C3 to C12 cycloalkyl, aryl, and 2,2,2-trifluoroethyl, A is -C(R4)-, -(CH2)x-, -(CH2)XNH(CH2)x-, or -CY2CY2-, where R4 is a hydrocarbyl, halosubstituted hydrocarbyl, or alkoxy group of from (1 to 12) carbon atoms, x is an integer from (1 to 12), and Y is halogen, and X is halogen, triflate, acetate, trifluoroacetate, hydride, or tetrafluoroborate. Such composition, when combined with an activating co-catalyst, is useful in polymerizing olefinic monomers. |