1
Turner Howard William, Hlatky Gregory George: Catalysts, method of preparing these catalysts, and polymerization processes wherein these catalysts are used.. Exxon Chemical Patents, August 3, 1988: EP0277003-A1 (238 worldwide citation)

A catalyst is prepared by combining a bis(cyclopentadienyl)zirconium compound which may be represented by one of the following general formulae: (A-Cp)MX1X2 (A-Cp)MX'1X'2 (A-Cp)ML; and (Cp*)(CpR)MX1 wherein: M is a metal selected from the Group consisting of titanium (Ti), zirconium (Zr) and hafnium ...


2
Turner Howard William, Hlatky Gregory George: Catalysts, method of preparing these catalysts and method of using said catalysts.. Exxon Chemical Patents, January 29, 1992: EP0468537-A1 (66 worldwide citation)

A catalyst is prepared by combining a first compound consisting of a bis(cyclopentadienyl)metal compound having one of the following general formulae: Wherein: M is a metal selected from the Group consisting of titanium, zirconium and hafnium; (A-Cp) is either (Cp)(Cp*) or Cp-A'-Cp* and Cp and Cp* a ...


3
Turner Howard William, Hlatky Gregory George: Polymeric product produced with catalyst comprising an ion pair. Exxon Chemical Patents, October 13, 1999: EP0949278-A2 (46 worldwide citation)

A catalyst is prepared by combining a first compound consisting of a bis(cyclopentadienyl)zirconium compound having one of the following general formulae: Wherein: (A-Cp) is either (Cp)(Cp*) or Cp-A'-Cp* and Cp and Cp* are the same or different substitinted or unsubstituted cyclopentadienyl radicals ...


4
Turner Howard William, Hlatky Gregory George: Process for the preparation of a polymeric product with a catalyst consisting of an ion pair. Exxon Chemical Patents, October 13, 1999: EP0949279-A2 (45 worldwide citation)

A catalyst is prepared by combining a first compound consisting of a bis(cyclopentadienyl)metal compound having one of the following general formulae: 1. (A-Cp)MX1X2 2. (A-Cp)M @@@@'2 3. (A-Cp)ML 4. (Cp*)(Cp @@@X1 Wherein: M is a metal selected from the Group consisting of titanium, zirconium and ha ...


5
Turner Howard William, Hlatky Gregory George: Catalysts, method of preparing these catalysts and method of using said catalysts.. Exxon Chemical Patents, September 22, 1993: EP0561479-A1 (33 worldwide citation)

A catalyst is prepared by combining a first compound consisting of a bis(cyclopentadienyl)metal compound having one of the following general formulae: 1. (A-Cp)MX1X2 3. (A-Cp)ML Wherein: M is a metal selected from the Group consisting of titanium, zirconium and hafnium; (A-Cp) is either (Cp)(Cp*) or ...


6
Canich Joann Marie, Hlatky Gregory George, Turner Howard William: Aluminum-free monocyclopentadienyl metallocene catalysts for olefin polymerization.. Exxon Chemical Patents, July 21, 1993: EP0551277-A1 (12 worldwide citation)

The invention is a catalyst system including a Group IV-B transition metal component and an activator component which may be employed to polymerize olefins to produce a high molecular weight polymer. The Group IV-B transition metal component contains a single cyclopentadienyl ligand and a single het ...


7
Turner Howard William, Hlatky Gregory George: Catalysts, method of preparing these catalysts and method of using said catalysts.. Exxon Chemical Patents, September 1, 1993: EP0558158-A1 (11 worldwide citation)

A catalyst is prepared by combining a first compound consisting of a bis(cyclopentadienyl)metal compound having one of the following general formulae: 1. (A-Cp)MX1X2 3. (A-Cp)ML Wherein: M is a metal selected from the Group consisting of titanium, zirconium and hafnium; (A-Cp) is either (Cp)(Cp*) or ...


8
Burkhardt Terry John, Brinen Jeffrey Lawrence, Hlatky Gregory George, Spaleck Walter, Winter Andreas: Supported metallocene catalyst systems for the polymerization of olefins, preparation and use thereof. Exxon Chemical Patents, Hoechst, April 10, 1996: EP0705281-A1 (10 worldwide citation)

The invention relates to supported metallocene catalyst systems, optionally prepolymerized with olefinic monomer, preferably ethylene or propylene, useful in the polymerization of propylene to isotactic polyproylene. The isotactic polypropylene obtained generally has a molecular weight of about 1000 ...


9
Hlatky Gregory George, Upton David Jonathan, Turner Howard William: Supported ionic metallocene catalysts for olefin polymerization.. Exxon Chemical Patents, October 14, 1992: EP0507876-A1 (8 worldwide citation)

A supported catalyst for olefin polymerization comprising a Group IV-B metallocene component and an ionic activator component comprising a cation capable of donating a proton and a labile bulky anion having a plurality of lipophilic radicals so that the anion is sterically hindered from covalently b ...


10
Turner Howard William, Hlatky Gregory George: Ionic catalyst for the production of poly--g(a)-olefins of controlled tacticity.. Exxon Chemical Patents, June 30, 1993: EP0548274-A1 (7 worldwide citation)

Syndiotactic poly- alpha -olefins are produced by polymerization of alpha-olefin monomers in the presence of a catalyst system comprising an ionic reaction product of a bis(cyclopentadienyl) group IVB metal compound (''metallocene'') of specific structure and an activator compound comprising a catio ...