1
Howard W Turner, Gregory G Hlatky, Richard R Eckman: Ionic metallocene catalyst compositions. Exxon Chemical Patents, M Susan Spiering, Myron B Kurtzman, Ben C Cadenhead, March 30, 1993: US05198401 (428 worldwide citation)

Ionic catalyst compositions can be prepared by combining two components. The first component is a bis(cyclopentadienyl) Group IV-B metal complex containing at least one ligand which will combine irreversibly with the second component or at least a portion thereof such as a cation portion thereof. Th ...


2
Howard C Welborn Jr, John A Ewen: Process and catalyst for polyolefin density and molecular weight control. Exxon Chemical Patents, Myron B Kurtzman, Charles M Cox, Ben C Cadenhead, June 28, 1994: US05324800 (420 worldwide citation)

Catalysts comprising (a) derivatives of mono, bi and tricyclopentadienyl coordination complexes with a transition metal and (b) and an alumoxane are employed in a process of producing polyolefins of controlled molecular weight.


3
Jo Ann M Canich, Gary F Licciardi: Mono-Cp heteroatom containing group IVB transition metal complexes with MAO: supported catalyst for olefin polymerization. Exxon Chemical Patents, Myron B Kurtzman, October 15, 1991: US05057475 (312 worldwide citation)

The invention is a supported catalyst system including an inert support material, a Group IV B transition metal component and an alumoxane component which may be employed to polymerize olefins to produce a high molecular weight polymer.


4
Jo Ann M Canich: Monocyclopentadienyl transition metal olefin polymerization catalysts. Exxon Chemical Patents, Jaimes Sher, Myron B Kurtzman, March 17, 1992: US05096867 (277 worldwide citation)

The invention is a catalyst system including a Group IV B transition metal component and an alumoxane component which may be employed to polymerize olefins to produce a high molecular weight polymer.


5
Gregory G Hlatky, Howard W Turner: Catalyst system of enhanced productivity. Exxon Chemical Patents, M Susan Spiering, Myron B Kurtzman, August 31, 1993: US05241025 (182 worldwide citation)

This invention relates to catalyst systems, and a method for using such system, for the enhanced production of homo and copolymer products of olefin, diolefin and/or acetylenically unsaturated monomers. This invention catalyst system comprises a Group III-A element compound for improving the product ...


6
Lawrence Spenadel, Monica L Hendewerk, Aspy K Mehta: Electrical devices comprising polymeric insulating or semiconducting members. Exxon Chemical Patents, Myron B Kurtzman, Jaimes Sher, September 21, 1993: US05246783 (182 worldwide citation)

Disclosed are electrically conductive and semiconductive devices utilizing polymers having resistance to water treeing and good dielectric properties. The polymer comprises ethylene polymerized with at least one C.sub.3 to C.sub.20 alpha-olefin and optionally at least one C.sub.3 to C.sub.20 polyene ...


7
Howard W Turner, Gregory G Hlatky: Catalysts, method of preparing these catalysts, and polymerization processes wherein these catalysts are used. Exxon Chemical Patents, M Susan Spiering, Myron B Kurtzman, January 11, 1994: US05278119 (166 worldwide citation)

The present invention relates to catalysts, to a method for preparing such catalysts, to a method of using such catalysts and to polymeric products produced with such catalysts. The catalysts are particularly useful in the polymerization of - olefins, diolefins and acetylenically unsaturated monomer ...


8
Ferdinand C Stehling, Charles S Speed, Curtis H Welborn Jr: Linear ethylene interpolymer blends of interpolymers having narrow molecular weight and composition distribution. Exxon Chemical Patents, Jaimes Sher, Myron B Kurtzman, January 17, 1995: US05382630 (147 worldwide citation)

Linear ethylene interpolymer blends are disclosed. The blends are made from components having a narrow molecular weight distribution (e.g. M.sub.w /M.sub.n .ltoreq.3) and a narrow composition distribution (e.g. CDBI>50%). The blend components in a blend can all have the same molecular weight but dif ...


9
Terry J Burkhardt, Masahide Murata, William B Brandley: Method for making and using a supported metallocene catalyst system. Exxon Chemical Patents, M Susan Spiering, Myron B Kurtzman, August 31, 1993: US05240894 (128 worldwide citation)

The invention relates to a novel process for producing a supported metallocene catalyst system useful for the polymerization and/or copolymerization of olefins, alpha-olefins, and/or diolefins which results in a catalyst product which during polymerization, produces minimal to no reactor fouling and ...


10
Howard W Turner: Ionic metallocene catalyst compositions. Exxon Chemical Patents, Myron B Kurtzman, William G Muller, February 4, 1997: US05599761 (110 worldwide citation)

An ionic catalyst system component comprising a water-stable anion having a plurality of lipophilic radicals covalently coordinated to and shielding a central, formal charge bearing metal or metalloid atom, in which the lipophilic radicals of the anion include substituted aromatic radicals useful fo ...