| Patent Number |
Title Of Patent |
Date Issued |
| 6787618 |
Metallocene compound and high molecular weight copolymers of propylene and olefins having two or |
September 7, 2004 |
| A metallocene compound having the formula (I): ##STR1##where M.sup.1 is a metal of group IVb, Vb or VIb of the Periodic Table of Elements, two or more adjacent radicals R.sup.4 to R.sup.12 together with the atoms connecting them form one or more aromatic or aliphatic rings and i |
| 6410665 |
Chemical compound |
June 25, 2002 |
| The present invention relates to a catalyst system containing (a) at least one compound of the formula (II): ##STR1##where R are each a halogen or a C.sub.1-40 group; X are each a C.sub.1-40 haloalkylene, C.sub.6-40 arylene, C.sub.6-40 haloarylene, C.sub.7-40 arylalkylene, C.sub.7-40 |
| 6359095 |
Process for the preparation of polyolefins |
March 19, 2002 |
| A process for the preparation of an olefin polymer by polymerization or copolymerization of an olefin of the formula R.sup.a --CH.dbd.CH--R.sup.b, in which R.sup.a and R.sup.b are identical or different and are a hydrogen atom or a hydrocarbon radical having 1 to 14 carbon atoms, or R.su |
| 6329313 |
Covalently supported chemical compound which can be neutral or ionic in the claims |
December 11, 2001 |
| The present invention relates to a supported chemical compound of the formula (I) ##STR1##in whichA.sup.c+ is a cation,c is an integer from 1 to 10,b is an integer .gtoreq.0,T is a support,y is an integer .gtoreq.1,a is an integer from 0 to 10, where a.multidot.y=c.multidot.b, andN is a unit |
| 6262197 |
Multinuclear metallocene compound, a process for its preparation and its use as catalyst |
July 17, 2001 |
| The present invention relates to a metallocene compound containing at least two metallocene fragments L--MX.sub.2 --L which are different from one another and having the formula I ##STR1##where B is a bridging unit, m is an integer from 2 to 100,000, M is a metal atom of group IVb, V |
| 6255531 |
Boron compounds and other compounds of group IIIa |
July 3, 2001 |
| The present invention relates to a chemical compound of the formula I ##STR1##whereR are, independently of one another, identical or different and are each a halogen atom or a C.sub.1 -C.sub.40 -group,X are, independently of one another, identical or different and are each a C.sub.1 -C.s |
| 6255508 |
Process for preparing a methylene-bridged biscyclopentadienyl compound |
July 3, 2001 |
| The present invention relates to a process for preparing a methylene-bridged biscyclopentadienyl compound having the formula I ##STR1##where L are, independently of one another, identical or different and are each a cyclopentadienyl group, by reacting one or two cyclopentadienyl comp |
| 6255506 |
Metallocenes containing aryl-substituted indenyl derivatives as ligands, process for their prepa |
July 3, 2001 |
| A very effective catalyst system for the polymerization or copolymerization of olefins comprises a cocatalyst, preferably an aluminoxane or a supported aluminoxane, and a metallocene of the formula I ##STR1##in which, in the preferred form, M.sup.1 is Zr or Hf, R.sup.1 and R.sup.2 ar |
| 6242544 |
Metallocenes containing aryl-substituted indenyl ligands and their use as catalysts |
June 5, 2001 |
| A very effective catalyst system for the polymerization or copolymerization of olefins comprises a cocatalyst, preferably an aluminoxane or a supported aluminoxane, and a metallocene of the formula I ##STR1##in which, in the preferred form, M.sup.1 is Zr or Hf, R.sup.1 and R.sup.2 ar |
| 6177376 |
Process for preparing a metallocene catalyst system |
January 23, 2001 |
| The present invention relates to a process for preparing a metallocene catalyst system, which comprises reacting a metallocene starting compound in a solvent with a compound capable of transferring hydrocarbon radicals and converting the resulting metallocene compound which is .sigma |
| 6124231 |
Supported catalyst system, processes for its preparation, and its use for the polymerization of |
September 26, 2000 |
| The present invention relates to a supported composition, to processes for its preparation and to its use for polymerizing olefins. The supported catalyst composition comprises at least one transition metal compound of subgroup 3, 4 or 5 of the ##STR1## Periodic Table of the Elem |
| 6114556 |
Metallocene compound and its use as catalyst component |
September 5, 2000 |
| Metallocene compound and its use as catalyst component The present invention relates to a multinuclear metallocene compound of the formula I, ##STR1## where M.sup.1 is a tetravalent metal, L.sup.1 are, independently of one another, identical or different and are each a substituted |
| 6063949 |
Stereorigid metallocene compound |
May 16, 2000 |
| The present invention relates to a stereorigid metallocene compound having as ligands at least two substituted or unsubstituted cyclopentadienyl groups which are connected to one another via a five-membered ring, where at least one cyclopentadienyl group is fused onto the five-membered r |
| 6057408 |
High molecular weight copolymers of propylene and olefins having 2 or 4 to 32 carbon atoms |
May 2, 2000 |
| A copolymer having from 80 to 40% by weight of propylene units, based on the total polymer, and from 20 to 60% by weight of at least one comonomer, based on the total polymer. The comonomer units are prepared from ethylene or olefins having at least 4 carbon atoms and the formula R.sup.a |
| 6051727 |
Metallocenes containing aryl-substituted indenyl derivatives as ligands, process for their prepa |
April 18, 2000 |
| A very effective catalyst system for the polymerization or copolymerization of olefins comprises a cocatalyst, preferably an aluminoxane or a supported aluminoxane, and a metallocene of the formula I ##STR1## in which, in the preferred form, M.sup.1 in Zr or Hf, R.sup.1 and R.sup.2 |
| 6051522 |
Catalyst which can be used for the preparation of olefins during polymerization |
April 18, 2000 |
| A catalyst containing the combination which comprises:(a) an aluminoxane, a compound of the formula R.sub.x NH.sub.4-x, BR'.sub.4, R.sub.x PH.sub.4-x, BR'.sub.4, R.sub.3 CBR'.sub.4 or BR'.sub.3, or a mixture thereof wherein X is an integer from 1 to 4 and the radicals R are identical or |
| 6028152 |
Process for the preparation of polyolefins |
February 22, 2000 |
| Disclosed is a catalyst system and method of polymerizing olefins, wherein the catalyst comprises a bridged metallocene of the following structure: ##STR1## wherein M.sup.1 is a transition metal of groups 4-6, R.sup.1 -R.sup.9 is hydrogen or other groups with the proviso that substit |
| 6002032 |
Transition metal compound |
December 14, 1999 |
| The present invention relates to zwitterionic neutral transition metal compounds. The compounds are suitable as catalyst components for the polymerization of olefins. |
| 5990331 |
Metallocenes containing partially hydrogenated p-ligands |
November 23, 1999 |
| The present invention relates to a metallocene of the formula I, ##STR1## for preparing polyolefins, where M.sup.1 is preferably Zr, Hf or Ti, R.sup.1 and R.sup.2 are each a hydrogen atom, a C.sub.1 -C.sub.3 -alkyl group, a C.sub.1 -C.sub.3 -alkoxy group, a C.sub.6 -C.sub.8 -aryl gro |
| 5990254 |
Metallocenes as catalysts in the preparation of cycloolefin copolymers |
November 23, 1999 |
| The present invention relates to a stereorigid metallocene compound containing, as ligands, at least two substituted or unsubstituted cyclopentadienyl groups which are bonded to one another via a monocyclic or polycyclic ring system, where at least one cyclopentadienyl group is fused |
| 5962359 |
Metallocene compound and its use as catalyst component |
October 5, 1999 |
| The present invention relates to a multinuclear metallocene compound of the formula I, ##STR1## where M.sup.1 is a tetravalent metal, L.sup.1 are, independently of one another, identical or different and are each a substituted cyclopentadienyl group, L.sup.2 and L.sup.3 are, inde |
| 5945553 |
Process for preparing a methylene-bridged biscyclopentadienyl compound |
August 31, 1999 |
| Process for preparing a methylene-bridged cyclopentadienyl compoundThe present invention relates to a process for preparing a methylene-bridged biscyclopentadienyl compound having the formula I ##STR1## Where L are, independently of one another, identical or different and are each a |
| 5932669 |
Metallocenes having benzo-fused indenyl derivatives as ligands, processes for their preparation |
August 3, 1999 |
| A very effective catalyst system for olefin polymerization comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I ##STR1## in which, preferably, M.sup.1 is Zr or Hf, R.sup.1 and R.sup.2 are halogen or alkyl, R.sup.3 is alkyl, R.sup.4 to R.sup.10 are alk |
| 5929264 |
Process for the preparation of substituted indenes and their use as ligand systems for metalloce |
July 27, 1999 |
| The invention relates to a process for the preparation of a compound of the formula IV or IVa ##STR1## in which R.sup.1 -R.sup.5 are preferably hydrogen or alkyl, which comprises reacting a compound I ##STR2## with a compound II ##STR3## in which X.sup.1 and X.sup.2 a |
| 5880302 |
Organometallic compound |
March 9, 1999 |
| The invention relates to an organometalic compound of the formula I ##STR1## where M is a metal atom, L are, independently of one another, identical or different .pi. ligands or other electron donors, T is a tin-containing bridge, Y are identical or different and are each a C.sub.1 - |
| 5852142 |
Process for the preparation of an olefin polymer |
December 22, 1998 |
| The invention relates to a process for the preparation of a compound of the formula IV or IVa ##STR1## in which R.sup.1 -R.sup.5 are preferably hydrogen or alkyl, which comprises reacting a compound I ##STR2## with a compound II ##STR3## in which X.sup.1 and X.sup.2 a |
| 5840948 |
Process for the preparation of substituted indenes and their use as ligand systems for metalloce |
November 24, 1998 |
| The invention relates to a process for the preparation of a compound of the formula IV or IVa ##STR1## in which R.sup.1 -R.sup.5 are preferably hydrogen or alkyl, which comprises reacting a compound I ##STR2## with a compound II ##STR3## in which X.sup.1 and X.sup.2 a |
| 5840947 |
Organometallic compound |
November 24, 1998 |
| The present invention relates to a metallocene compound of the formula Iwhere Cp.sup.1 and Cp.sup.2 are, independently of one another, identical or different and are each an unsubstituted or substituted cyclopentadienyl group, n=zero or 1, R.sup.5 is a bridge, M.sup.1 is a metal of group IVb |
| 5840644 |
Metallocenes containing aryl-substituted indenyl derivatives as ligands, process for their prepa |
November 24, 1998 |
| Metallocenes containing aryl-substituted indenyl derivatives as ligands, process for their preparation, and their use as catalysts.A very effective catalyst system for the polymerization or copolymerization of olefins comprises a cocatalyst, preferably an aluminoxane or a supported alumi |
| 5831105 |
Process for preparing bridged metallocenes |
November 3, 1998 |
| In-situ process for preparing a bridged metallocene, which comprises reacting a substituted cyclopentadiene A, if desired an unsubstituted or substituted cyclopentadienyl compound B, at least one base, at least one bridging reagent and at least one metal component with one another. |
| 5830821 |
Process for olefin preparation using metallocenes having benzo-fused indenyl derivatives as liga |
November 3, 1998 |
| Metallocenes having benzo-fused indenyl derivatives as ligands, processes for their preparation and their use as catalystsA very effective catalyst system for olefin polymerization comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I ##STR1## in which |
| 5821393 |
Process for the preparation of aromatic bromoalkyl-substituted hydrocarbon compounds |
October 13, 1998 |
| The present invention relates to a process for the preparation of an aromatic bromoalkyl-substituted hydrocarbon compound, in which an alkyl-substituted aromatic hydrocarbon compound is reacted with a brominating agent in the presence of water. |
| 5808122 |
Organometallic compound |
September 15, 1998 |
| The invention relates to an organometallic compound of the formula I ##STR1## where M is chromium, molybdenum or tungsten, L is a cyclopentadienyl ligand, T is a bridge, A is a cyclopentadienyl ligand or an electron donor and R.sup.1 are, independently of one another, identical or di |
| 5792819 |
Process for the preparation of an olefin polymer |
August 11, 1998 |
| The present invention relates to zwitterionic neutral transition metal compounds. The compounds are suitable as catalyst components for the polymerization of olefins. |
| 5786432 |
Metallocenes containing aryl-substituted indenyl derivatives as ligands, process for their prepa |
July 28, 1998 |
| Metallocenes containing aryl-substituted indenyl derivatives as ligands, process for their preparation, and their use as catalysts.A very effective catalyst system for the polymerization or copolymerization of olefins comprises a cocatalyst, preferably an aluminoxane or a supported alumi |
| 5776851 |
Metallocenes, process for their preparation and their use as catalysts |
July 7, 1998 |
| The present invention relates to a polynuclear metallocene compound of the formula I ##STR1## a process for their preparation and their use as a catalyst for olefin polymerization. |
| 5770753 |
Metallocenes containing aryl-substituted indenyl derivatives as ligands, process for their prepa |
June 23, 1998 |
| Metallocenes containing aryl-substituted indenyl derivatives as ligands, process for their preparation, and their use as catalysts.A very effective catalyst system for the polymerization or copolymerization of olefins comprises a cocatalyst, preferably an aluminoxane or a supported alumi |
| 5750752 |
Transition metal compound |
May 12, 1998 |
| The present invention relates to a stereorigid transition metal compound having as ligands a cyclopentadienyl group and a substituted or unsubstituted heteroatom which are connected to one another via a monocyclic or polycyclic ring system, with the cyclopentadienyl group being fused |
| 5741868 |
Olefin polymerization process by using a substituted indenyl containing metallocene catalyst |
April 21, 1998 |
| The present invention relates to a metallocene compound of the formula I ##STR1## which can advantageously be used as catalyst component for olefin polymerization. |
| 5733991 |
Process for preparing cycloolefin polymer |
March 31, 1998 |
| Cycloolefin polymers having a high viscosity number are obtained by polymerization of a polycyclic olefin and, if desired, an acyclic olefin and/or a monocyclic olefin in the presence of a catalyst system which comprises an aluminoxane and a metallocene compound of the formula ##STR1 |
| 5726333 |
Organometallic compound |
March 10, 1998 |
| The invention relates to an organometallic compound of the formula I, ##STR1## where M is a tetravalent metal, L are, independently of one another, identical or different and are each a .pi. ligand, T are, independently of one another, identical or different and are each a bridge and |
| 5710297 |
Metallocenes, and their use as catalysts |
January 20, 1998 |
| The present invention relates to a stereorigid metallocene compound containing, as ligands, at least two substituted or unsubstituted cyclopentadienyl groups which are bonded to one another via a monocyclic or polycyclic ring system, where at least one cyclopentadienyl group is fused |
| 5698645 |
Process for preparing cycloolefin copolymers |
December 16, 1997 |
| A process for preparing a cycloolefin copolymer by polymerization of at least one cycloolefin and at least one acyclic olefin in the presence of a catalyst which contains at least one cocatalyst and at least one metal-locene of the formula (I) ##STR1## |
| 5693836 |
Process for the preparation of polyolefins |
December 2, 1997 |
| A process for the preparation of an olefin polymer by polymerization or copolymerization of an olefin of the formula R.sup.a --CH.dbd.CH--R.sup.b, in which R.sup.a and R.sup.b are identical or different and are a hydrogen atom or a hydrocarbon radical having 1 to 14 carbon atoms, or R.su |
| 5693730 |
Metallocenes, process for their preparation and their use as catalysts |
December 2, 1997 |
| The present invention relates to a polynuclear metallocene compound of the formula I ##STR1## a process for their preparation and their use as a catalyst for olefin polymerization. |
| 5672668 |
Process for the preparation of polyolefins |
September 30, 1997 |
| A process for the preparation of an olefin polymer by polymerization or copolymerization of an olefin of the formula R.sup.a --CH.dbd.CH--R.sup.b, in which R.sup.a and R.sup.b are identical or different and are a hydrogen atom or a hydrocarbon radical having 1 to 14 carbon atoms, or R.su |
| 5670681 |
Process for preparing a carbon-bridged biscyclopentadiene compound |
September 23, 1997 |
| The present invention relates to a process for preparing a carbon-bridged biscyclopentadiene compound by reacting one or two cyclopentadiene compounds LH with a carbonyl compound in the presence of at least one base and at least one phase transfer catalyst. |
| 5670436 |
Metallocene compound |
September 23, 1997 |
| The present invention relates to an unbridged metallocene compound which is suitable for olefin polymerization. |
| 5616747 |
Process for the preparation of bridged, chiral metallocene catalysts of the bisindenyl type |
April 1, 1997 |
| A process for the preparation of a compound of the formula III ##STR1## comprising, deprotonating a solution or suspension of an indene of the formula I ##STR2## in a solvent or solvent mixture containing a base to give a suspension of a metallated product of the compound of |
| 5612428 |
Process for preparing olefin polymer with catalyst containing metallocene |
March 18, 1997 |
| The invention relates to a metallocene compound of the formula I ##STR1## where the two indenyl ligands have substitution patterns different from one another. The metallocene compound can be used as catalyst component for olefin polymerization. |
