1
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 ...


2
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 ...


3
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 ...


4
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.


5
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 ...


6
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 ...


7
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 ...


8
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 ...


9
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 ...


10
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 ...