Patent ID: 6870016

Claim:
A polymerization process comprising contacting, under polymerization conditions, one or more ethylenically unsaturated monomers and a catalyst composition, said catalyst composition comprising the product of a compound represented by formula (I) and a cocatalyst: wherein: M 1 is selected from titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum and tungsten; R 1 and R 2 are selected from chlorine, C 1 -C 6 alkyl groups, C 6 -C 10 aryl groups, C 7 -C 12 arylalkyl groups and C 7 -C 12 alkylaryl groups; R 3 is selected from C 3 -C 6 alkyl groups and phenyl; R 4 , R 5 , R 6 and R 7 are each independently selected from hydrogen, halogen, C 1 -C 10 alkyl groups, C 6 -C 14 aryl groups, C 2 -C 10 alkenyl groups, C 7 -C 40 arylalkyl groups, C 7 -C 40 alkylaryl groups, C 8 -C 40 arylalkenyl groups, and —NR′ 2 , —SR′, —OR′, —SiR′ 3 , —OSiR′ 3 and —PR′ 2 radicals wherein each R′ is independently selected from halogen, C 1 -C 10 alkyl groups and C 6 -C 14 aryl groups; or two or more adjacent radicals R 5 , R 6 and R 7 together with the atoms connecting them may form one or more rings; R 8 , R 9 , R 10 and R 11 are each independently as defined for R 4 , R 5 , R 6 and R 7 ; R 12 is selected from halogen, C 1 -C 10 alkyl groups, C 6 -C 14 aryl groups, C 2 -C 10 alkenyl groups, C 7 -C 40 arylalkyl groups, C 7 -C 40 alkylaryl groups, C 8 -C 40 arylalkenyl groups, and —NR′ 2 , —SR′, —OR′, —SiR′ 3 , —OSiR′ 3 and —PR′ 2 radicals wherein each R′ is independently selected from halogen, C 1 -C 10 alkyl groups and C 6 -C 14 aryl groups; R 13 is selected from —B(R 14 )—, —Al(R 14 )—, —Ge—, —Sn—, —O—, —S—, —SO—, —SO 2 —, —N(R 14 )—, —CO—, —P(R 14 )— and —P(O)(R 14 ); wherein R 14 , R 15 and R 16 are each independently selected from hydrogen, halogen, C 1 -C 20 alkyl groups, C 6 -C 30 aryl groups, C 1 -C 20 alkoxy groups, C 2 -C 20 alkenyl groups, C 7 -C 40 arylalkyl groups, C 8 -C 40 arylalkenyl groups and C 7 -C 40 alkylaryl groups, or R 14 and R 15 , together with the atom(s) connecting them, form a ring; and M 3 is selected from carbon, silicon, germanium and tin; or R 13 is represented by the formula wherein: R 17 , R 18 , R 19 , R 20 , R 21 , R 22 , R 23 and R 24 are each independently selected from hydrogen, halogen, hydroxy, C 1 -C 10 alkyl groups, C 1 -C 10 alkoxy groups, C 6 -C 14 aryl groups, C 6 -C 14 aryloxy groups, C 2 -C 10 alkenyl groups, C 7 -C 40 arylalkyl groups, C 7 -C 40 alkylaryl groups and C 8 -C 40 arylalkenyl groups; or two or more adjacent radicals R 17 , R 18 , R 19 , R 20 , R 21 , R 22 , R 23 and R 24 , including R 20 and R 21 , together with the atoms connecting them, form one or more rings; and M 2 represents one or more carbon atoms, or a silicon, germanium or tin atom.