Process to Produce Ethylene Propylene Copolymers

A method to polymerize olefins comprising contacting a catalyst compound with at least two non-coordinating anion activators (NCA's), a first alpha olefin, a second alpha olefin different from the first alpha olefin, and a diene in a polymerization reactor to obtain a copolymer, where the catalyst compound is combined with the activators prior to introduction into the polymerization reaction and where the catalyst compound is represented by the formula (I):

• wherein
• M is a group 3, 4, 5 or 6 transition metal atom, a lanthanide metal atom, or an actinide metal atom;
• Y is a Group 13, 14, 15 or 16 bridging heteroatom containing substituent that is bonded to E and A;
• and
• each X is, independently, a univalent anionic ligand, or both X are joined and bound to the metal atom to form a metallocycle ring, or both X join to form a chelating ligand, a diene ligand, or an alkylidene ligand;
• and
• either:
• 1) E is a substituted or unsubstituted fluorenyl ligand and A is a substituted or unsubstituted cyclopentadienyl ligand, but not a substituted or unsubstituted indenyl ligand;
• or 2) both E and A are substituted or unsubstituted indenyl ligands;
• wherein the two non-coordinating anion activators are different;
• and the copolymer has:
• a) first alpha olefin content of 35 to 90 mol %;
• b) second alpha olefin content of 9.8 to 64.8 mol %;
• c) diene content of 0.2 to 5 mol %;
• d) a branching index g′ave of 0.95 or more;
• e) complex viscosity ratio (eta*(0.01 rad/s)/eta*(100 rad/s), at 125° C.) greater than 1.1*Y0, where Y0=Y1+{[(Y2−Y1)/(X2−X1)](X0−X1)}, where X0 is the wt % of a first non-coordinating anion activator, NCA1, used to prepare the copolymer (based upon weight of NCA1 and a second non-coordinating anion activator, NCA2, used to prepare the copolymer), X1=0, X2=100, Y1=complex viscosity ratio of polymer made with 100% NCA1 and 0% NCA2, Y2 is complex viscosity ratio of polymer made with 100% NCA2 and 0% NCA1, where NCA1 has an Mw lower than the Mw of NCA2;
• f) an Mw/Mn of 5.0 or less;
• g) a melting point of 30° C. or less;
• and
• h) a Composition Distribution Breadth Index of 50% or more.

A method to polymerize olefins comprising contacting a catalyst compound with at least two non-coordinating anion activators (NCA's), a first alpha olefin, a second alpha olefin different from the first alpha olefin, and a diene in a polymerization reactor to obtain a copolymer, wherein the catalyst compound is combined with the activators prior to introduction into the polymerization reaction and wherein the catalyst compound is represented by formula (III):

• where M1 is zirconium and/or hafnium;
• R1 and R2 are identical or different and are selected from hydrogen atoms, C1-C10 alkyl groups, C1-C10 alkoxy groups, C6-C10 aryl groups, C6-C10 aryloxy groups, C2-C10 alkenyl groups, C2-C40 alkenyl groups, C7-C40 arylalkyl groups, C7-C40 alkylaryl groups, C8-C40 arylalkenyl groups, OH groups or halogen atoms;
• or conjugated dienes that are optionally substituted with one or more hydrocarbyl, tri(hydrocarbyl)silyl groups or hydrocarbyl tri(hydrocarbyl)silylhydrocarbyl groups;
• R3, R4, R5, R6, R7, R8, R9, R10, R11 and R12 are the same or different and are selected from hydrogen atoms, halogen atoms, C1-C10 halogenated or unhalogenated alkyl groups, C6-C10 halogenated or unhalogenated aryl groups, C2-C10 halogenated or unhalogenated alkenyl groups, C7-C40 halogenated or unhalogenated arylalkyl groups, C7-C40 halogenated or unhalogenated alkylaryl groups, C8-C40 halogenated or unhalogenated arylalkenyl groups, —NR′2, —SR′, —OR′, —OSiR′3 or —PR′2 radicals in which R′ is one of a halogen atom, a C1-C10 alkyl group, or a C6-C10 aryl group;
• or two or more adjacent radicals R5 to R7 together with the atoms connecting them can form one or more rings (preferably R3 is methyl, ethyl or butyl), and adjacent radicals R11 and R12 can form one or more saturated or aromatic rings;
• R13 is selected from:
• —B(R14)—, —Al(R14)—, —Ge—, —Sn—, —O—, —S—, —SO—, —SO2—, —N(R14)—, —CO—, —P(R14)— —P(O)(R14)—, —B(NR14R15)— and —B[N(SiR14R15R16)2]—, R14, R15 and R16 are each independently selected from hydrogen, halogen, C1-C20 alkyl groups, C6-C30 aryl groups, C1-C20 alkoxy groups, C2-C20 alkenyl groups, C7-C40 arylalkyl groups, C8-C40 arylalkenyl groups and C7-C40 alkylaryl groups, or R14 and R15, together with the atom(s) connecting them, form a ring;
• and M3 is selected from carbon, silicon, germanium and tin, or R13 is represented by the formula:
• wherein R17 to R24 are, independently, hydrogen, or a hydrocarbyl, substituted hydrocarbyl, halogen, halocarbyl, substituted halocarbyl, silylcarbyl, substituted silylcarbyl, germylcarbyl, substituted germylcarbyl;
• or two or more adjacent radicals R17 to R24, including R20 and R21, together with the atoms connecting them form one or more rings;
• M2 is carbon, silicon, germanium, or tin.