| abstract |
This invention relates to a process to polymerize olefins comprising contacting, in a polymerization system, olefins having three or more carbon atoms with a catalyst compound, activator, optionally comonomer, and optionally diluent or solvent, at a temperature above the cloud point temperature of the polymerization system and a pressure no lower than 10 MPa below the cloud point pressure of the polymerization system, where the polymerization system comprises any comonomer present, any diluent or solvent present, the polymer product, where the olefins having three or more carbon atoms are present at 40 weight % or more, wherein the metallocene catalyst compound is represented by the formula: n nwhere n M is a transition metal selected from group 4 of the periodic table; each R 1 is independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl and functional group, and any two R 1 groups may be linked, provided that if the two R 1 groups are linked, then they do not form a butadiene group when M is Zr; each R 2 is independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group, and two or more R 2 groups may be linked together to form an aliphatic or aromatic ring; R 3 is carbon or silicon; R 4 is hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group; a is 0, 1, or 2; R 5 is hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group, R 4 and R 5 may be bound together to form a ring, and R 5 and R 3 may be bound together to form a ring; b is 0, 1, or 2; R 6 is carbon or silicon; and R 4 and R 6 may be bound together to form a ring; each R 7 is independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl and a functional group; each R 8 is independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl and a functional group, and R 7 and R 8 may be linked together to form an aliphatic or aromatic ring; each R 9 is independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl and a functional group, and two R 9 groups may be linked together to form a ring, R 9 and R 8 may be linked together to form a ring, R 9 and R 16 may be linked together to form a ring, R 9 and R 11 may be linked together to form a ring; c is 0, 1 or 2; R 10 is -M 2 (R 16 ) h - where M 2 is B, Al, N, P, Si or Ge, h is an integer from 1 to 2, such that the valence of M 2 is filled, and R 16 is hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group, and two R 16 groups may be linked together to form a ring; d is 0, 1, or 2; each R 11 is independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl and a functional group, and two R 11 groups may be linked together to form a ring. R 11 and R 8 may be linked together to form a ring. R 11 and R 16 may be linked together to form a ring; e is 0, 1, or 2; where the sum of c, d, and e is 1, 2 or 3; R 12 is carbon or silicon; R 13 is hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group, and R 13 and R 14 may be bound together to form a ring, and R 13 and R 15 may be bound together to form a ring, when g is 0; f is 0, 1, or 2; R 14 is hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group, and R 14 and R 12 may be bound together to form a ring, when f is 0; g is 0, 1, or 2; and R 15 is carbon or silicon. |