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Mark G Goode, Daniel M Hasenberg, Thomas J McNeil, Thomas E Spriggs: Method for reducing sheeting during polymerization of alpha-olefins. Union Carbide Corporation, Clement J Vicari, February 7, 1989: US04803251 (120 worldwide citation)

A method for reducing sheeting during polymerization of alpha-olefins by feeding either a positive charge generating or negative charge generating chemical additive to the reactor responsive to particular static levels in the reactor. The chemical additive is added in amounts which neutralize the ch ...


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Simon Mawson, Mark G Goode: Mixed catalyst system. Univation Technologies, Jaimes Sher, Lisa Kimes Jones, July 10, 2001: US06258903 (52 worldwide citation)

This invention relates to a process to polymerize olefins comprising reacting olefins with a combined catalyst system comprising a hydrogen generating olefin polymerization catalyst and from 10 ppm to 10 weight % of at least one hydrogen consuming olefin polymerization catalyst system, based upon th ...


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Mark G Goode, Thomas E Spriggs, Isaac J Levine, Wayne R Wilder, Calvin L Edwards: Process for the simultaneous trimerization and copolymerization of ethylene. Union Carbide Chemicals & Plastics Technology Corporation, Saul R Bresch, August 11, 1992: US05137994 (40 worldwide citation)

A process for the simultaneous trimerization of ethylene and the copolymerization of the trimer with ethylene comprising continuously contacting ethylene, the 1-hexene which is formed, and, optionally, hydrogen in a reaction zone, under trimerization and polymerization conditions, with the supported ...


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John R Parrish, William H Sachs, Mark G Goode, Jeffrey Drabish: Method for online estimation of reactor split for multimodal polyolefins. Univation Technologies, January 17, 2006: US06988022 (13 worldwide citation)

The present method is directed to techniques for estimating and periodically controlling the reactor split of alpha-olefin polymerizations using multiple catalysts that selectively incorporate monomers and other reactants into polymer compositions. The method provides for the rapid determination of ...


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Ronald S Eisinger, Mark G Goode, Daniel M Hasenberg, Kiu H Lee: Process for reducing sheeting during polymerization of alpha-olefins. Union Carbide Chemicals and Plastics Technology Corporation, Clement J Vicari, July 23, 1991: US05034479 (12 worldwide citation)

A process for reducing sheeting during gas phase polymerization of alpha-olefins utilizing catalysts prone to cause sheeting wherein the gaseous feed stream containing monomer comonomer hydrogen and inert gas is introduced into the reactor through the recycle stream to the reactor at a point prior t ...


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Sun Chueh Kao, Kevin J Cann, Frederick J Karol, Arthur E Marcinkowsky, Mark G Goode, Eugene H Theobald: Catalyst for regulating the molecular weight distribution of ethylene polymers. Union Carbide Corporation, John S Piscitello, July 4, 1989: US04845067 (11 worldwide citation)

A vanadium-based catalyst is treated with certain oxygen-containing compounds as a means of narrowing and effectively regulating the molecular weight distribution of the polymers produced with the catalyst.


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Mark G Goode, Rainer Kolb, Chi I Kuo, Tae Hoon Kwalk, Dongming Li, Ching Tai Lue, Francis C Rix, Daniel P Zilker Jr: Polyethylene compositions having improved properties. Univation Technologies, Jennifer A Schmidt, Kristina Leavitt, December 11, 2012: US08329835 (7 worldwide citation)

Polyethylene compositions having improved properties are provided. In one aspect, a polyethylene composition having a long chain branching index (g′avg) of 0.5 to 0.9; a Melt Flow Rate (MFR) of greater than (49.011×MI(−0.4304)), where MI is Melt Index; and a weight average molecular weight to number ...