1
Sudhin Datta, Bruce A Harrington, Weiguo Hu, Periagaram S Ravishankar, George Rodriguez: Propylene ethylene polymers and production process. ExxonMobil Chemical Patents, June 19, 2007: US07232871 (27 worldwide citation)

Ethylene propylene copolymers, substantially free of diene, are described. The copolymers will have a uniform distribution of both tacticity and comonomer between copolymer chains. Further, the copolymers will exhibit a statistically insignificant intramolecular difference of tacticity. The copolyme ...


2
George Rodriguez, Bruce Allan Harrington: Process for producing propylene copolymers. ExxonMobil Chemical Patents, Stephen Timmins, Kevin M Faulkner, Hsin Lin, July 17, 2012: US08222358 (15 worldwide citation)

In a process for producing a propylene copolymer, propylene and at least one olefin monomer selected from ethylene and alpha olefins having 4 to 20 carbon atoms are contacted with a catalyst system comprising (a) a catalyst precursor comprising an organometallic compound and (b) an activator compris ...


3
George Rodriguez, Donna J Crowther: Olefin copolymerization process with bridged hafnocenes. ExxonMobil Chemical Patents, William G Muller, Charles E Runyan, October 9, 2001: US06300433 (10 worldwide citation)

The invention is directed to olefin polymerization processes using bridged hafnocene catalyst complexes that are surprisingly stable under high temperature olefin polymerization processes such that olefin copolymers can be prepared with high molecular weights and catalyst activities. More specifical ...


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George Rodriguez: Fluorophenylborates and their use as activators in catalyst systems for olefin polymerization. ExxonMobil Chemical Patents, Catherine L Bell, November 20, 2007: US07297653 (7 worldwide citation)

A fluorophenylborate useful as an activator for an olefin polymerization catalyst is represented by the formula: Ct+[B—(ArfRn)4]− where Ct+ is a cation capable of extracting an alkyl group from, or breaking a carbon-metal bond of, an organo metallic compound; Arf is a fluorophenyl group; n is 1 or 2 ...


6
Jean M Tancrede, Christopher L Curry, David R Johnsrud, George Rodriguez, Fran A Shipley: Polyolefin adhesive compositions and articles made therefrom. Exxonmobil Chemical Patents, April 30, 2013: US08431642 (6 worldwide citation)

Provided are adhesive compositions composed of a polyolefin composition comprising at least about 50 wt. % polypropylene and at least one wax. The polymer compositions have a Dot T-Peel of about 1 Newton or more, a branching index (g′) of 0.95 or less measured at the Mz of the polymer, a molecular w ...


7
Donna J Crowther, Matthew W Holtcamp, John R Hagadorn, Charles J Ruff, George Rodriguez, Patrick Brant: Vinyl terminated higher olefin copolymers and methods to produce thereof. ExxonMobil Chemical Patents, March 19, 2013: US08399724 (5 worldwide citation)

This invention relates to a vinyl terminated higher olefin copolymer having an Mn of 300 g/mol or more (measured by 1H NMR) comprising: (i) from about 20 to about 99.9 mol % of at least one C5 to C40 higher olefin monomer; and (ii) from about 0.1 to about 80 mol % of propylene; wherein the higher ol ...


8
George James Pehlert, Bruce A Harrington, George Rodriguez: Polyolefins made by catalyst comprising a noncoordinating anion and articles comprising them. ExxonMobil Chemical Patents, March 31, 2009: US07511104 (4 worldwide citation)

Polymers made by transition metal catalyst systems comprising a bulky noncoordinating anion (NCA) as cocatalyst component. In comparison to polymers containing a conventional NCA, these polymers show a considerably lower dielectric loss, making them suitable for insulation applications such as for p ...


9
Donna J Crowther, Peijun Jiang, George Rodriguez: Catalyst system and process for olefin polymerization. ExxonMobil Chemical Patents, Catherine L Bell, September 21, 2010: US07799879 (4 worldwide citation)

The present application relates to a new catalyst system for the polymerization of olefins, comprising a new ionic activator having the formula: [R1R2R3AH]+[Y]−, wherein [Y]− is a non-coordinating anion (NCA), A is nitrogen or phosphorus, R1 and R2 are hydrocarbyl groups or heteroatom-containing hyd ...


10
Peijun Jiang, George Rodriguez, Fran A Shipley, Aspy K Mehta: Polyolefin adhesive compositions. ExxonMobil Chemical Patents, August 14, 2012: US08242198 (3 worldwide citation)

An adhesive and method for hot melt application. The adhesive comprises polyolefin base polymer, from 1 to 10 wt % of at least one functionalized polyolefin, and from 1 to 15 wt % of a wax, based on the total weight of the polyolefin base polymer, functionalized polyolefin and wax, wherein the wax h ...