Maria D Ellul, Donald R Hazelton, Periagaram S Ravishankar: Thermoplastic elastomers having improved cure. Exxon Chemical Patents, Douglas W Miller, August 12, 1997: US05656693 (41 worldwide citation)

Thermoplastic elastomers containing ethylene, alpha-olefin, vinyl norbornene elastomeric polymers provide superior cure levels to thermoplastic elastomers containing ethylene, alpha-olefin, diene monomer elastomeric polymers with other dienes than vinyl norbornene. The elastomeric polymers, along wi ...

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 ...

Robert E Medsker, Donald R Hazelton, Gary W Gilbertson, Sabet Abdou Sabet, Kuo Shein Shen, Ronald L Hazelton, Periagaram S Ravishankar: Hydrosilylation crosslinking of thermoplastic elastomer. Advanced Elastomer Systems, Exxon Chemical Patents, William A Skinner, June 26, 2001: US06251998 (20 worldwide citation)

In the preparation of thermoplastic elastomers by hydrosilylation crosslinking of the elastomeric component, the use of an elastomer containing a non-conjugated diene and having a Mooney viscosity within the MST range of 45 to 100 provides products with a high level of crosslinking and an improved c ...

Guy Joseph Wouters, Periagaram S Ravishankar, Kent L Chasey, Eric P Jourdain: Multimodal ethylene, alpha-olefin and diene polymers, processes for making and devices comprising such compositions. ExxonMobil Chemical Patents, February 3, 2004: US06686419 (12 worldwide citation)

This invention relates generally to synthetic polymers, generally with improved balance of processability, resilience and durability. These polymers are generally of the ethylene, alpha-olefin, diene terpolymer type.

Narayanaswami Raja Dharmarajan, Periagaram S Ravishankar: Electrical devices including ethylene, a-olefin, vinyl norbornene elastomeric polymers. Exxon Chemical Patents, Douglas W Miller, October 7, 1997: US05674613 (12 worldwide citation)

Elastomeric polymers including ethylene, alpha-olefin and vinyl norbornene are shown to have improved extrusion characteristics, improved electrical properties, improved cure characteristics compared to ethylene, alpha-olefin, non-conjugated diene elastomeric polymers containing non-conjugated diene ...

Periagaram S Ravishankar, Narayanaswami Raja Dharmarajan: Ethylene &agr;-olefin elastomeric polymer compositions having improved extrusion processibility. Exxon Mobil Chemical Patents, Frank E Reid, Stephen D Prodnuk, August 7, 2001: US06271311 (10 worldwide citation)

Extruded shapes, profiles and parts in general based on an ethylene, alpha-olefin elastomeric polymer are manufactured utilizing a tailored approach to polymerization, leading to a polymer that delivers all of the benefits of metallocene based polymers, but without the drawbacks. Additionally, the e ...

Eric P Jourdain, Periagaram S Ravishankar: Elastomeric vehicle vibration damping devices. Exxon Chemical Patents, Douglas W Miller, November 5, 1996: US05571883 (10 worldwide citation)

Motor vehicle vibration damping parts based on an ethylene, alpha-olefin, vinyl norbornene elastomeric polymer are manufactured with more efficiency due to vibration damping part compounds having lower viscosity, easier processing than ethylene, alpha-olefins, diene monomer compounds, where the dien ...

Sudhin Datta, Rul Zhao, Srivatsan Srinivas, Majia Y Amin, Periagaram S Ravishankar: Propylene-based elastomers and uses thereof. ExxonMobil Chemical Patents, June 24, 2008: US07390866 (7 worldwide citation)

The present invention provides curable and cured propylene-based elastomers, optionally including a diene, and having isotactic polypropylene crystallinity, a melting point by DSC equal to or less than 110° C., and a heat of fusion of from 5 J/g to 50 J/g. The present invention also provides blend c ...

Maria D Ellul, Periagaram S Ravishankar, Jianya Cheng, Paul E McDaniel: Thermoplastic vulcanizate composition. ExxonMobil Chemical Patents, May 15, 2012: US08178625 (7 worldwide citation)

The instant disclosure is directed to a thermoplastic vulcanizate composition comprising a dynamically-cured rubber; from about 20 to about 300 parts by weight of a thermoplastic resin per 100 parts by weight rubber and from about 30 to about 250 parts by weight additional oil per 100 parts by weigh ...

Eric Paul Jourdain, Periagaram S Ravishankar: Vehicle parts comprising ethylene/2-olefin/vinylnorbornene elastomeric polymers. Exxon Chemical Patents, Douglas W Miller, September 15, 1998: US05807946 (7 worldwide citation)

Motor vehicle brake parts based on an ethylene, alpha-olefin, vinyl norbornene elastomeric polymer are manufactured with more efficiency due to brake part compounds having lower viscosity, faster and fuller cures than ethylene, alpha-olefins, diene monomer compounds, where the diene monomer is other ...