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Walter Spaleck, Jurgen Rohrmann, Martin Antberg: Process for the preparation of an olefin polymer. Hoechst, Connolly and Hutz, January 11, 1994: US05278264 (192 worldwide citation)

A very effective catalyst system for olefin polymerization consists of a cocatalyst, preferably an aluminoxane, and a metallocene of the formula (I) ##STR1## in which, preferably, M.sup.1 is Zr, R.sup.1 and R.sup.2 are alkyl or halogen, R.sup.3 to R.sup.6 are alkyl, --(CR.sup.8 R.sup.9).sub.m --R.su ...


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Andreas Winter, Martin Antberg, Volker Dolle, Jurgen Rohrmann, Walter Spaleck: Process for the preparation of an olefin polymer using metallocenes having specifically substituted indenyl ligands. Hoechst Aktiengesellschaft, Connolly & Hutz, April 19, 1994: US05304614 (170 worldwide citation)

A very active catalyst system for olefin polymerization comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I or Ia ##STR1## in which, preferably, M.sup.1 is Zr or Hf, R.sup.1 and R.sup.2 are alkyl or halogen, R.sup.3 and R.sup.4 are hydrogen or alkyl, R.sup.5 and R.s ...


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Walter Spaleck, Jurgen Rohrmann, Martin Antberg: Process for the preparation of an olefin polymer. Hoechst Aktiengesellschaft, Connolly and Hutz, July 12, 1994: US05329033 (111 worldwide citation)

A very effective catalyst system for olefin polymerization consists of a cocatalyst, preferably an aluminoxane, and a metallocene of the formula (I) ##STR1## in which, preferably, M.sup.1 is Zr, R.sup.1 and R.sup.2 are alkyl or halogen, R.sup.3 to R.sup.6 are alkyl, --(CR.sup.8 R.sup.9).sub.m --R.su ...


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Walter Kaminsky, Regina Spiehl: Process for the preparation of an olefin polymer. Hoechst Aktiengesellschaft, April 20, 1993: US05204429 (92 worldwide citation)

Crystalline, isotactic homopolymers of cycloolefins or elastic copolymers made from cycloolefins and linear olefins are obtained, without ring opening of the cycloolefins, at industrially favorable polymerization temperatures by means of a catalyst which comprises a stereorigid, chiral metallocene c ...


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Andreas Winter, Martin Antberg, Bernd Bachmann, Volker Dolle, Frank Kuber, Jurgen Rohrmann, Walter Spaleck: Process for the preparation of polyolefins. Hoechst Aktiengesellschaft, John M Genova, September 30, 1997: US05672668 (52 worldwide citation)

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.sup.a and R.su ...


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Andreas Winter, Frank Kueber, Walter Spaleck, Herbert Riepl, Wolfgang Anton Herrmann, Volker Dolle, Juergen Rohrmann: Process for the preparation of an olefin polymer using metallocenes containing specifically substituted indenyl ligands. Targor, Connolly & Hutz, February 9, 1999: US05869584 (38 worldwide citation)

A highly effective catalyst system for the polymerization of olefins 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 alkyl or halogen, R.sup.5 is hydrogen or alkyl, R.sup.3 and R.sup.4 ar ...


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Andreas Winter, Juergen Rohrmann, Martin Antberg, Walter Spaleck, Wolfgang A Herrmann, Herbert Riepl: Process for the preparation of an olefin polymer using specific metallocenes. Hoechst Aktiengesellschaft, Connolly & Hutz, April 2, 1996: US05504232 (24 worldwide citation)

A highly effective catalyst system for the polymerization of olefins comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I ##STR1## where M.sup.1 =Zr or Hf, R.sup.1 and R.sup.2 =(C.sub.1 -C.sub.4)-alkyl or chlorine, R.sup.3, with the proviso that at least one of the r ...


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Andreas Winter, Juergen Rohrmann, Martin Antberg, Walter Spaleck, Wolfgang Anton Herrmann, Herbert Riepl: Process for the preparation of an olefin polymer using specific metallocenes. Targor, Connolly & Hutz, June 9, 1998: US05763542 (19 worldwide citation)

A highly effective catalyst system for the polymerization of olefins comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I ##STR1## where M.sup.1 =Zr or Hf, R.sup.1 and R.sup.2 =(C.sub.1 -C.sub.3)-alkyl or chlorine, R.sup.3, with the proviso that at least one of the r ...


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