Patent ID: 6114555
Filing Date: 2000-09-05
Classification: C07F,C08F,Y02P,Y10S

Abstract:
A metallocene compound having a formula I, II, or III:(LR.sub.k).sub.z [LR.sub.k-f (R.sup.l OH).sub.f ].sub.x MX.sub.Y ##STR5## wherein: each L is independently cyclopentadienyl, indenyl, tetrahydroindenyl, fluorenyl, octahydrofluorenyl or benzoindenyl;each R is independently hydrogen, C.sub.1 -C.sub.20 alkyl, C.sub.3 -C.sub.20 cycloalkyl, C.sub.6 -C.sub.20 aryl, C.sub.3 -C.sub.20 alkenyl, C.sub.7 -C.sub.20 arylalkyl, C.sub.7 -C.sub.20 alkylaryl, C.sub.8 -C.sub.20 arylalkenyl, or a group SiR.sup.II.sub.3 ; wherein Cl-C.sub.20 alkyl, C.sub.3 -C.sub.20 cycloalkyl, C.sub.6 C.sub.20 aryl, C.sub.3 -C.sub.20 alkenyl, C.sub.7 -C.sub.20 arylalkyl, C.sub.7 -C20 alkylaryl, and C.sub.8 -C.sub.20 arylalkenyl are linear or branched and optionally substituted with 1 to 10 halogen atoms;each R.sup.I is independently a group SiR.sup.II.sub.2 or a divalent aliphatic or aromatic hydrocarbon group containing from 1 to 20 carbon atoms, optionally containing from 1 to 5 heteroatoms of groups 14 to 16 of the Periodic Table of the elements and boron;each Q is independently selected from the group consisting of B, C, Si, Ge, and Sn;M is a metal of group 3or 4 of the Periodic Table, Lanthanide or Actinide;each X is independently hydrogen, chlorine, bromine, OR.sup.II, NR.sup.II.sub.2, C.sub.1 -C.sub.20 alkyl or C.sub.6 -C.sub.20 aryl;each R.sup.II is independently linear or branched C.sub.1 -C.sub.20 alkyl, linear or branched C.sub.3 -C.sub.20 cycloalkyl, linear or branched C.sub.6 -C.sub.20 aryl, linear or branched C.sub.3 -C.sub.20 alkenyl, linear or branched C.sub.7 -C.sub.20 arylalkyl, linear or branched C.sub.7 -C.sub.20 arylalkenyl, or linear or branched C.sub.7 -C.sub.20 alkylaryl;L' is N or 0;when L is cyclopentadienyl k is equal to 5; when L is indenyl k is equal to 7; when L is fluorenyl or benzoindenyl k is equal to 9; when L is tetrahydroindenyl k is equal to 11; and when L is octahydrofluorenyl, k is equal to 17;z is equal to 0, 1 or 2;x is equal to 1, 2 or 3;y is equal to 1, 2 or 3;M has a valence, and x+y+z is equal to the valence of M;m is an integer and is 1, 2, 3 or 4;is an integer whose value ranges from 0 to k-1;b is an integer whose value ranges from 0 to k-1;f is an integer whose value ranges from 1 to k;g is 0 or 1;c is equal to 0 or 1;e is equal to 0 or 1;a+b+c is at least 1;a+g+c is at least 1;d is equal to 0, 1 or 2;when Q is B then c+d=1;when Q is C, Si, Ge or Sn, then c+d=2;when L' is N, then g+e=1; andwhen L' is O, then g=0 and e=0.