1
Howard W Turner, Jo Ann M Canich, Bernard J Folie: High temperature polymerization process using ionic catalysts to produce polyolefins. Exxon Chemical Patents, M S Spiering, W G Muller, April 18, 1995: US05408017 (113 worldwide citation)

This invention relates to a process for polymerizing olefins at high pressures in a polymerization medium at high temperature utilizing an ionic olefin polymerization catalyst derived from the reaction of a cyclopentadienyl-containing transition metal compound having a hydrolyzable alkyl or hydride ...


2
Howard W Turner: Polyionic transition metal catalyst composition. Exxon Chemical Patents, W G Muller, June 27, 1995: US05427991 (103 worldwide citation)

Ionically activated metallocene catalyst compositions which are useful in the polymerization of olefins comprise transition metal cationic components associated with and stabilized by a polyanionic moleties constituted of non-coordinating anionic groups chemically bonded to core components. The tran ...


3
John B Gardiner, Martyn N Dick: Viscosity index improver--dispersant additive useful in oil compositions. Exxon Chemical Patents, F T Johmann, W G Muller, M B Kapustij, October 25, 1988: US04780228 (101 worldwide citation)

Hydrocarbon polymers such as ethylene copolymers may be reacted with unsaturated nitrogen-containing monomers or unsaturated carboxylic acids in the presence of a free radical catalyst such as a peroxide or azo free radical initiator and a chain stopping agent, e.g. a mercaptan to inhibit excessive ...


4
John Flexer Walzer Jr: Supported ionic catalyst composition. Exxon Chemical Patents, W G Muller, July 1, 1997: US05643847 (99 worldwide citation)

The invention is directed to a catalyst composition suitable for addition reactions of ethylenically and acetylenically unsaturated monomers comprising a metal oxide support having covalently bound to the surface thereof directly through the oxygen atom of the metal oxide an activator anion that is ...


5
Weiqing Weng, Armen Dekmezian, Eric J Markel, Avinash Gadkari, David L Peters: Vinyl-containing stereospecific polypropylene macromers. Exxon Chemical Patents, Brent M Peebles, W G Muller, September 12, 2000: US06117962 (90 worldwide citation)

Stereospecific polypropylene macromers having a high percentage of vinyl terminal bonds and a method for preparing them are provided. The stereospecific polypropylene macromers have number average molecular weights (M.sub.n) of about 2,000 Daltons to about 50,000 Daltons, and the total number of vin ...


6
Vijaya K Varma, Esther D Winans, Rosemary O Halloran, Phillip W Brewster: Multifunctional viscosity index improver. Exxon Chemical Patents, F T Johmann, W G Muller, September 15, 1987: US04693838 (72 worldwide citation)

Hydrocarbon polymers such as ethylene copolymers may be reacted with unsaturated nitrogen-containing monomers or unsaturated carboxylic acids in a synthetic hydrocarbon lubricating oil in the presence of a free radical initiator such as a peroxide. The copolymer grafted directly with the nitrogen-co ...


7
Howard William Turner, George Alan Vaughan, Richard Allen Fisher, John Flexer Walzer Jr, Charles Stanley Speed, Bernard Jean Folie, Donna Jean Crowther: High temperature olefin polymerization process. Exxon Chemical Patents, W G Muller, June 16, 1998: US05767208 (69 worldwide citation)

A polymerization process for olefinically or acetylenically unsaturated monomers is disclosed. The process comprises contacting the one or more of the monomers with a suitable ionic catalyst system in the presence of a long-chain, linear alkyl ligand-containing organo aluminum compound. Preferred io ...


8
Howard William Turner, Charles Stanley Speed, Bernard Jean Folie, Donna Jean Crowther, George Alan Vaughan, Richard Allen Fisher, John Flexer Walzer Jr: High temperature olefin polymerization process. Exxon Chemical Patents, W G Muller, May 25, 1999: US05907021 (68 worldwide citation)

A polymerization process for olefinically or acetylenically unsaturated monomers is disclosed. The process comprises contacting the one or more of the monomers with a suitable ionic catalyst system in the presence of a long-chain, linear alkyl ligand-containing organo aluminum compound. Preferred io ...


9
Dekoninck Jean Marc: Graft polymers for use in engineering thermoplastic blends. Exxon Chemical Patents, W G Muller, J E Schneider, September 14, 1993: US05244971 (67 worldwide citation)

Graft polymers for use as compatibilizers and/or modifiers for engineering thermoplastic compositions are provided comprising the reaction product of functionalized thermoplastic polymers with styrene-maleic anhydride copolymer. The functionalized thermoplastic polymers are based typically on polyol ...


10
Howard W Turner, Gregory G Hlatky, Richard R Eckman: Ionic metallocene catalyst compositions. Exxon Chemical Patents, M Susan Spiering, W G Muller, January 24, 1995: US05384299 (66 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 ...