1
Weiqing Weng, Eric J Markel, Armenag H Dekmezian, Palanisamy Arjunan: Branched polypropylene compositions. Exxon Chemical Patents, William G Muller, Douglas W Miller, Charles E Ronyan, May 1, 2001: US06225432 (87 worldwide citation)

Branched polypropylene compositions which have improved melt strength and good processability are provided. The branched polypropylene compositions of the present invention have a polydispersity of less than 4.0 and a melt point greater than 90° C. Further, the weight average branching index g of th ...


2
Maria D Ellul, Paul E McDaniel, Thomas L Peltier, Jianya Cheng, Patrick Brant, Armenag H Dekmezian: Thermoplastic elastomers having improved processing and physical property balance. Advanced Elastomer Systems, ExxonMobil Chemical Patents, Arthur M Reginelli, William A Skinner, September 17, 2002: US06451915 (45 worldwide citation)

A thermoplastic elastomer formed by a process comprising the steps of dynamically vulcanizing a rubber within a mixture that includes the rubber, from about 10 to about 80 percent by weight of a thermoplastic resin based upon the total weight of the rubber and the thermoplastic combined, and from ab ...


3
Eric J Markel, Weiqing Weng, Armenag H Dekmezian: Branched semi-crystalline high-C3 ethylene-propylene compositions. ExxonMobil Chemical Patents, Charles E Runyan, Mandi Milbank, June 3, 2003: US06573350 (38 worldwide citation)

Branched ethylene-propylene compositions which have improved melt strength and shear thinning are provided. The weight average branching index g′ for the higher molecular weight region of the ethylene-propylene composition is less than 0.95. Additionally, a novel process is provided for efficiently ...


4
Eric J Markel, Weiqing Weng, Armenag H Dekmezian: Branched semi-crystalline high-C3 ethylene-propylene polymer compositions. ExxonMobil Chemical Patents, Charles E Runyan, May 27, 2003: US06569965 (25 worldwide citation)

Branched ethylene-propylene compositions which have improved melt strength and shear thinning are provided. The weight average branching index g′ for the higher molecular weight region of the ethylene-propylene composition is less than 0.95. Additionally, a novel process is provided for efficiently ...


5
Pawan K Agarwal, Armenag H Dekmezian: Blends of polyethylene and polypropylene. Exxon Chemical Patents, Frank E Reid, Charles Edwin Bunyon Jr, June 18, 2002: US06407171 (22 worldwide citation)

Disclosed are compositions comprising: a) an ethylene polymer component having a melting temperature greater than or equal to about 75° C., an ethylene crystallinity level of 5 weight percent or more, and a narrow compositional distribution; and b) a propylene polymer component having a melt flow ra ...


6
Peijun Jiang, Armenag H Dekmezian, Kevin R Squire, Cesar A Garcia Franco: Thermoplastic elastomer polyolefin in-reactor blends and molded articles therefrom. ExxonMobil Chemical Patents, Darryl M Tyus, January 24, 2012: US08101685 (19 worldwide citation)

This invention relates to an in-reactor polymer blend comprising: (a) a first ethylene-containing polymer having a density of greater than 0.90 g/cm3 and a Mw of more than 20,000 g/mol and (b) a second ethylene-containing polymer having a density of less than 0.90 g/cm3, wherein the polymer blend ha ...


7
Pawan Kumar Agarwal, Weiqing Weng, Aspy K Mehta, Armenag H Dekmezian, Main Chang, Rajan K Chudgar, Olivier Jean Georjon, Chon Yie Lin, Michael C Chen, Galen C Richeson, Palanisamy Arjunan: Articles formed from propylene diene copolymers. ExxonMobil Chemical Patents, Catherine Bell, Leandro Arechederra, October 26, 2004: US06809168 (17 worldwide citation)

The co-polymerization reaction of one or more olefin monomers, such as propylene, with &agr;,&ohgr;-diene units and the resulting copolymers are provided. More specifically, the copolymer may have from 90 to 99.999 weight percent of olefins and from 0.001 to 2.000 weight percent of &agr;,&ohgr;-dien ...


8
Weiqing Weng, Eric J Markel, Main Chang, Armenag H Dekmezian, Palanisamy Arjunan, Olivier J Georjon: Propylene diene copolymerized polymers. ExxonMobil Chemical Patents, Paige Schmidt, February 28, 2006: US07005491 (14 worldwide citation)

A method of lowering MFR response of a high melt flow rate polymer producing metallocene catalyst is provided. The method includes contacting the metallocene catalyst with a sufficient quantity of α,ω-diene monomer such that when the catalyst composition is contacted with polymerizable reactants und ...


9
Pawan Kumar Agarwal, Weiqing Weng, Aspy K Mehta, Armenag H Dekmezian, Main Chang, Rajan K Chudgar, Christopher R Davey, Chon Yie Lin, Galen C Richeson, Palanisamy Arjunan, Olivier Jean Georjon: Propylene diene copolymers. ExxonMobil Chemical Patents, December 20, 2005: US06977287 (14 worldwide citation)

The co-polymerization reaction of one or more olefin monomers, such as propylene, with α,ω-diene units and the resulting copolymers are provided. More specifically, the copolymer may have from 90 to 99.999 weight percent of olefins and from 0.001 to 2.000 weight percent of α,ω-dienes. The copolymer ...


10
Peijun Jiang, Armenag H Dekmezian, Kevin R Squire, Carlos U de Gracia, Keith Edward Jolibois, Cesar A Garcia Franco, Ronald Raymond Thackston: Thermoplastic olefin compositions. ExxonMobil Chemical Patents, Darryl M Tyus, September 20, 2011: US08022142 (12 worldwide citation)

An in-reactor polymer blend including (a) a propylene-containing first polymer; and (b) propylene-containing second polymer having a different crystallinity from the first polymer. The polymer blend has a melting temperature, Tm, of at least 135° C., a melt flow rate of at least 70 dg/min, a tensile ...