Plastic Pipe expert

 Associate Consultant
Dr. Kalyan Sehanobish

Picture
Plastic Pipe Inspection Expert - Dr. Kalyan Sehanobish
PROFESSIONAL EXPERIENCE 

Materials & Adhesives Research (MARS)
Director, 3/2019
I lead a boutique consulting organization that helps companies to accelerate business growth through product development, innovation and intellectual property enhancement. Over 40 years of experience in the thermoplastics industry, I have a proven track record in Research & Development driving profitable, sustainable business growth and delivering breakthrough innovation. I have spent a considerable amount of time in failure analysis of plastic pipes, currently offering artificial intelligence technology for inspection.

I had a long and distinguished career at The Dow Chemical R&D reaching one of the highest ranks of senior Fellow within the company. I am recognized for my innovations in R&D with several internal awards and internationally recognized awards such as SPE Fellow, ASME award and R&D 100 award for my innovations. I was recently nominated with a few others for the Plastics Hall of Fame. I am very passionate in creating value added solutions for my clients in their growth journey.


Dow Chemical Company
Corporate Fellow, Dow R&D, 3/2012 - 12/2018

Core R&D (TDCC)
Sr. Research Fellow, 1/2009 - 2/2012.

Dow Automotive R&D (TDCC)
Sr. Scientist, 11/2004 - 1/2009

Polyolefin R&D (TDCC)
Research Scientist, 3/1999 - 11/2004

Polyethylene and Insite Research (TDCC)
Technical Leader, 7/1996 - 3/1999

Materials Science Group (TDCC)
Research Associate, 10/1995 - 7/1996

Materials Science Group (TDCC)
Research Leader, 4/1993 - 10/1995

Materials Science Group (TDCC)
Project Leader, 4/1990 - 5/1993

Materials Science Group (TDCC)
Sr. Research Engineer, 4/1986 - 4/1990

Macromolecular Science (CWRU)
Research Associate, 7/1985 - 10/1986
Pipe failure analysis for acetal and Polybutylene pipe. Application of microscopic, DSC, IR and other analytical techniques such as “True Stress-strain curve” to find the root cause in PB pipe failure.

Macromolecular Science (CWRU)
PhD Research Assistant, 1/1982 - 7/1985
He is a leading expert in the area of Materials Science with particular emphasis on fracture behavior. In his 25+ year’s career in Dow, he had been responsible for doing the pioneering work in life time prediction modeling for polyolefin pipes, structure property relationships, thermoplastic polymer blends, engineering materials science aspects of metals, ceramics and hybrids. His fracture mechanism map forms the foundation of engineering design with bis-A polycarbonate systems. He is also one of the early pioneers of developing applications for metallocene catalyzed polyethylene resins, known as polyolefins plastomers and elastomers, starting from 1990. He was instrumental in developing structure-properties relationships and broad variety of applications of the metallocene catalyzed polyethylene resins. He helped develop a variety of applications of metallocene and post-metallocene catalyzed resins such as impact modifiers for thermoplastic olefins (TPO), cast stretch film, Gas pipes and hot water pipes, blown film etc. His series of publications and patents in the area of tie-chain concentration, blown and cast film processing-structure-properties, specialty films, elastomers document the pioneering research. The research has resulted in INSITETM technology and new resin families such as ENGAGETM, AFFINITYTM, NORDELTM IP, ELITETM and VERSIFYTM. These efforts have resulted in currently over 2 billion pounds per year of sales of metallocene catalyzed polyethylene resins by the Dow chemical company.

He also worked in Dow Automotive market facing business for 5 years. His assignment was to steer the automotive business into new business growth through R&D. During his commission, more solution oriented products for automotive customers in safety, light weighting, acoustics, fuel efficiency and emission areas were introduced in the market. He was a member of the steering team responsible for chartering new business development initiatives within Dow Transportation business. Under his leadership Dow Automotive has focused on several key platforms such as (a) Safety and Energy Absorbing Foams, (b) Alternative Energy, (c) Fuel Efficiency and (d) Emission for new solution oriented business development. It has also initiated a new commercial transportation platform to further extend and customize the solutions available for the automotive segment.


MAIN ACHIEVEMENTS 

  1. He began PhD in Case Western Reserve University and had the opportunity to work with some of the renowned names in the world of Plastics. At a very early career, he had been exposed to the field of lifetime prediction and durability of Plastics while attending the group meetings of Prof. Eric Baer, Late Prof. Ann Hiltner, Prof. Hugh Brown, Prof. Alexander Chudnovsky and Prof. Moet. We had continuous exchanges and debates on polymer deformation and yielding within this team and with others in the field like Prof. Ed Kramer, Prof. JG Williams, Prof. Edgar Andrews and Prof. Broutman. While it shaped through dialogues and debates with so many thinkers in the field of Polymer Materials Science, he always had a close alliance with Prof. Chudnovsky. Today the research on this field is fully matured in Prof. Alexander Chudnovsky’s group led to a robust Physics based model for lifetime prediction of polymers combining the thermodynamic aspects of material ageing and corresponding slow crack propagation. Teaching from this work has been absorbed into many accelerated testing of polymers and composites used in many laboratories across the world. For applications like plastic pipes, one can even use these models to quantitatively predict the lifetime of pipes in a specific environment or rating of pipe performance.
  2. On entering the industry in 1987, he switched attention to developing plastic products in engineering applications that will survive the test of time. The first opportunity came when Dow and GM Saturn got together to develop all plastic door panels. This project not only helped us develop some unique polymer blend formulation with partnership with Mr. David Bank, Fellow at Dow. These were the first all-plastic door panels of the industry. Today, PC/ABS blends have stood the test of time in several automotive interior applications such as IP skins. Saturn continued to build their door panels from plastics for almost 20 years. This effort also developed two most fundamental works in the field of thermoplastics (i) Effect of part geometry on toughness of Polycarbonate (PC) and (ii) prediction of critical defect size. This was a debated topic during the early introduction of PC into the world of engineering Plastics. For metal trained engineers, this was quite an eye opener. It taught the world that using thickness to enhance safety of a part design is unavailable for certain engineering thermoplastics. In Dow production plants the intrinsic defect size was used to screen gels in final polymer pellets. Several publications were contributed to the open literature on “Fracture Mechanism maps” to help guide engineering design with certain thermoplastics.
  3. Structure-properties of metallocene catalyzed polyethylenes.   His research work has led to new structure-properties models in metallocene catalyzed polyethylene enabling rapid application developments of metallocene catalyzed polyethylene resins.  The new models include a quantitative tie-chain concentration model to predict optimum tie-chain concentration to design resins with optimum toughness. My esteemed co-workers in this field are two past winners of SPE Fellow (Dr. Rajen Patel and Dr. Steve Chum – Member of Plastics Hall of Fame). This model was further extended to explain the behavior of metallocene based elastomers by combining tie-chains and concepts from rubber elasticity, assuming the crystals as pseudo-crosslinks. This work was presented as an invited paper by me in the American Physical Society meetings. This also led to one of the most critical patents for application of metallocene based ethylene-a-olefins. This work has been further completed by pioneering work describing true stress-strain behavior associated with necking in semicrystalline polymers. This description is the basis for lifetime prediction of articles like polyethylene pipe. These structure-properties models were extensively utilized for resin designs and application development, especially using metallocene catalyzed polyethylene resins which has resulted in currently over 2 billion pound per year in sales of metallocene catalyzed polyethylene resins by the Dow Chemical company.  His pioneering research in the structure-properties relationships in metallocene single-site catalyzed polyethylene is captured in a series of peer-reviewed journals, conference proceedings and in the invited chapter in the encyclopedia of chemical processing.
  4. Fundamentals behind metallocene catalyzed elastomers.   His research work in the area of fundamentals of elastomer modified Thermoplastics Polyolefin sits at the foundation of impact modified PP. Several patents have been written related to the commercialized ENGAGETM family of products that is a key ingredient for the majority of the bumper fascia in the automotive market.
  5. Thermoplastic Polyolefins (TPO).  He was a pioneer of modern versions of TPO and a co-author to some of the early patents in this field. In the early 90’s he was active in introducing ethylene-alpha olefin based elastomers as an impact modifier for TPO for applications in automotive. He participated in both polymer formulation fundamentals and commercialization aspects of TPO based products. Today TPOs are a major ingredient in automotive applications. Some of his fundamental work has been documented in a publication in the honor of Dr. Walter Kaminsky (father of metallocene catalyst) highlighting the advances in metallocene technology. 
  6. Dual reactor resins for durable pipes. He was responsible for developing predictive models for polyolefin based pipes and relating it to polymer molecular architecture.  This effort gave rise to a family of dual reactor resins. Kalyan Sehanobish is a co-author in several of these commercial resin formulations.  His work was extended into resins for hot water pipes with various levels of chlorine content.  First commercialization effort of non-crosslinked hot water pipes began with this work.  He developed collaborations in this field for both crosslinked and non-crosslinked PE. Two notable joint collaborations that resulted in unique publications (leveraging the strength of these academic and industrial labs) were between U. of Illinois and Jana Laboratories Inc., Canada and the other one is between U. of Illinois and U. of Leoben, Austria.) He developed a technique to monitor intrinsic defects in Polyethylene resin during plant production and subsequent pelletization. This was implemented as a part of quality control. Fractographic technique for identifying the sources of defect in a field failed pipe was developed and was further adopted in the analytical laboratory.
  7. Polycarbonate blends. His first contribution in this field was on effect of geometry on toughness of Polycarbonate (PC) and prediction of critical defect size.  This technique was considered for adopting in the Freeport production plant in the initial stages of development to bring down intrinsic defects.  Later, this work was extended to “Fracture Mechanism Maps”, a very useful thing for engineers to design with PC.  Basic understanding of toughening mechanisms in PC was developed in partnership with University colleagues.  This was the guiding principle behind PC – Acrylonitrile Butadiene Styrene (ABS) blends.  First commercial PC blend to be considered as door panel resulted from his early efforts of filled PC/ABS blends.
  8. Thermal energy management systems. As Dow Automotive works to transform itself into a solutions provider to the automotive industry, new business development R&D has begun to consider opportunities outside our current business portfolio.  This project is an example of this approach.  Industry in general is actively seeking a novel approach to capture waste heat efficiently such that it can be utilized later for heating coolants, air, oil etc., with the ultimate goal of enhancing fuel efficiency.  A team was led by Kalyan Sehanobish for initial analysis that considered (i) sensible heat, (ii) reversible chemical reaction and (iii) phase change materials (PCM) as possible approaches to reaching the maximum amount of heat storage density at reasonable triggering temperatures available in the car.  Thorough analyses of literature and thermodynamic modeling led to eutectic mixtures of nitrates and nitrites of light alkaline metals.  Next hurdle was to encapsulate these highly oxidizing salt mixtures so that we can effectively integrate them into the heat exchange devices of the OEMs. This is an ongoing project with tremendous potential. Automotive manufacturer VW has internalized this concept and proven it in an experimental car in 2012.
  9. In Automotive assignment, he also put attention on developing  safety and crash energy absorbing foams and also e-coatable sound energy absorbing foams for reducing noise in modern cars. The sound absorbing foams had the best in class performance but still struggling with entering the market that has other low cost engineered solutions with slightly less performance. This series of work was not simply a development of foam product, several publications were written around the unique structure of the energy absorbing foam explaining their crash performance through structure-property models. It was presented in several automotive meetings around the world on request from the session organizers.
  10. In 2011, he was involved in several sustainability initiatives within the plastics that resulted in current Dow platform of in circular economy of plastics from cradle to grave. Several bio-based and bio-degradable plastics initiatives were assessed during this period including plastic packaging initiatives to extend shelf life of food products. This resulted in a post reactor platform for polyolefin to add functionalities like adhesion, barrier and enhanced shrinkage.
  11. Starting 2015, his participation in Dow adhesives initiatives resulted in new platforms like SYMBIEX, PACACEL etc. to essentially add attributes to environmentally friendly solvent free and water based adhesives. Further Dow’s gap in the barrier polymer offering was addressed by bringing barrier functionality to solvent based and water based adhesives.

AWARDS, HONORS AND OTHER CONTRIBUTIONS
  1. Member of Society of Plastics Engineers since 1989.
  2. Founding member of the Failure Analysis and Prevention SIG in SPE, 1989
  3. Dow’s excellence in science award in 1990 in recognition of scientific accomplishments for “Prediction of structure–property relationships in polymers derived from Constraint geometry Catalysts”.
  4. INSITE technology received R&D-100 award in 1994.
  5. Development Scientists Org’s Award for Excellence…, form CEO/R&D VP, 1997.
  6. ASME Best paper award in Pressure Vessels and Piping Division, “Methodology for Durability analysis of HDPE Pipe”, 1999.
  7. ELITE enhanced polyethylenes nominated R&D-100 award in 1999.
  8. Dow’s Technology Center Award, 2000 for introducing a novel blown film product in Argentina to compete favorably in the market place.
  9. LESA adhesives nominated for R&D-100 award 2005.
  10. IMPAXX foam received R&D-100 award in 2007.
  11. Prestigious AUTOMOTIVE PACE award for IMPAXX foam in 2008.
  12. Dow’s face in the The Atlantic and The Week magazine for the “Human Element” campaign.
  13. Fellow of Society of Plastics Engineers in 2011.
  14. Dow’s Technology Center Award, 2012
  15. 6-Sigma (DFSS) certified local champion.
  16. 6-Sigma (MAIC) certified local champion.
  17. 6-sigma certified Green Belt.
  18. Symbiex one-shot adhesive nominated for R&D-100 award jointly with NordMeccanica, 2017
  19. Adcote HP adhesive nominated for R&D-100 award, 2017

UNIVERSITY EDUCATION

B.S. in Chemical Engineering
Jadavpur University, Calcutta India, October 1979
  • Graduated with First Class Honors (National Merit Scholar)

Ph.D. in Macromolecular Science
Case Western Reserve University, Cleveland OH, October 1985
  • Dissertation: “Application of Crack layer theory to cracking in Polystyrene”

PUBLICATIONS & INVITED LECTURES
  1. Crack Propagation in Polystyrene under Fixed Elongation, J. mater. Sci., 20, 1934, 1985.
  2. Fractographic Analysis of Field Failure in Polyethylene Pipe, J. Mater. Sci. Lett., 4, 890, 1985.
  3. An analysis of Crack Layer Stability, Int. J. Fract., 32, 21, 1986.
  4. Application of Crack Layer Theory to Fatigue Crack Propagation in PMMA, J. Macromolecular Sci. Phys., B26, 307, 1987.
  5. Crack Layer Analysis of Nonmonotonic Fatigue Crack Propagation in HDPE, Polymer, 28, 1315, 1987.
  6. Crack Tip Damage Analysis in Fatigue Fracture of Epoxy Resin, Polymer Composites, 4, 596, 1987.
  7. Effect of Geometric Constraints on the Fracture Toughness of Polycarbonate, Proceedings of the 7th International Conference on Fracture, 4, 2879, 1989.
  8. The effects of SCBD and Morphology on the Fracture Toughness of LLDPE resins, preprints of ACS meeting, Florida, September 1989.
  9. Residual Stresses in Injection Molded Polycarbonate Rectangular Bars, SPE 49th Annual Technical Conference in Montreal, Canada, Proceedings, Vol XXXVII, 1703, 1991.
  10. Failure Analysis in PC/ABS blends, SPE 49th Annual Technical Conference in Montreal, Canada, Proceedings, Vol XXXVII, 2185, 1991. 
  11. Measurement of Fracture Toughness from Fatigue Fracture Studies, proceedings of SPE ANTEC, May 1991.
  12. Micromechanisms of Failure in Polycarbonate/Polyethylene Terephthalate Blends, ACS Polymer Preprints, 33, No. 2, 624, 1992. 
  13. Fatigue and Fracture Toughness Evaluation of Mineral Filled Polycarbonate/Polyethylene Terephthalate Blends, Journal of Applied Polymer Science, 47, pp. 785-793, 1993.
  14. Stress Relaxation Due to Crack-Craze Interactions, Polymer, 34, No. 6, 1212, 1993.
  15. Effect of Thickness on Fatigue Crack Propagation in Polycarbonate, J. Mater. Sci., 28, 1360, 1993.
  16. Finite Element Model and Experimental Analysis of Crack-Inclusion Interaction, J. Appl. Polym., Sci., 50 , 7, pp. 1233-1238, 1993.
  17. Residual Stresses in Injection Molded Polycarbonate Rectangular Bars, Journal of Polymer Engineering & Science, 33(24), pp. 1634-1643, 1993. 
  18. On the Applicability of Metals Based Fracture Toughness, J1c and J-R Curve Tests to Polymers, MD-Vol. 46, Use of Plastics and Plastic Composites, ASME, Ed. V.K. Stokes, 1993. 
  19. An Experimental Technique for Investigation of Crack Path in Heterogeneous Media, AMD-Vol. 176, Novel Experimental Techniques in Fracture Mechanics, ASME, Ed. A. Shukla, 1993.
  20. Effect of Chain Microstructure on Modulus of Ethylene-a-Olefin Copolymers, J. Appl. Polym. Sci., 51, 887-894, 1994. 
  21. Comparative Analysis of the Mechanical Behavior and Fatigue Crack Growth Resistance of Polyurethane Elastomers, proceedings of SPE ANTEC’94, San Francisco, 1994.
  22. The Effect of Impact modifier on the Fatigue Behavior of Rigid Thermoplastic Polyurethane systems, proceedings of SPE ANTEC’94, San Francisco, 1994.
  23. The Effect of UV Radiation on Fatigue Behavior of Polymers", proceedings of SPE ANTEC, Boston, 1995.
  24. A New Method of Reliability Assessment for Thermoplastic Structural Components", proceedings of SPE ANTEC’95, Boston, 1995.
  25. Cold Drawing in Semicrystalline Polymers above their Glass Transition, proceedings of SPE ANTEC’95, Boston, 1995.
  26. Theoretical Prediction of Tie-chain Concentration and Its Characterization Using Post-Yield Response, J. Appl. Polym. Sci., 60, 749, 1995.
  27. Intrinsic Tear Strengths and Their Correlation with Properties of Polymers Made Using INSITE Technology, J. Plastic Film &Sheeting, 11, pp. 269-278, 21, 1995.
  28. Consideration of the Cold Drawing (Necking) Behavior in Polycarbonate as a Double Glass Transition, Polym. Eng. Sci., 35, 304, 1995.    
  29. Lifetime, Toughness and Reliability of Engineering Thermoplastics, proceedings of SPE ANTEC’96, Indianapolis, 1996.
  30. Interfacial Property Determination for Immiscible Polymer Blends: A Model System of Polycarbonate / Polyethylene terephthalate, Polym. Eng. Sci., 36, 20, pp. 2509-2517, 1996.
  31. Viscoelastic Deformation and Lifetime Assessment for Polyethylene Piping, Proceedings IGRC 98, 1998 International Gas Research Conference, San Diego, CA, Nov. 8-11, 47, 1998.
  32. The Time Dependency of the Necking Process in Polyethylene, Proceedings SPE/ANTEC’99, III, pp. 3399-3402, New York City, May 2-6, 1999.
  33. On Modeling of Slow Crack Growth in Polyethylene, Proceedings SPE/ANTEC’99, III, pp. 3458-3462, New York City, May 2-6, 1999.
  34. Kinematics and Driving Forces of Crack Layer Evolution, ASME Mechanics & Materials Conference 1999, PP. 65, Blacksburg, Virginia, June 27-30, 1999.
  35. Application of crack layer theory to modeling of slow crack growth in polyethylene, International J. of Fracture, 97, pp. 83 - 102, 1999.
  36. Application of the Crack Layer Model for Understanding of the Correlation between Lifetime and Creep Behavior in Polyethylene, Conference Proceedings SPE/ANTEC’2000, III, pp. 3138-3142, Orlando, Florida, May 7-11, 2000.
  37. Ductile Failure and Delayed Necking in Polyethylene, Conference Proceedings SPE/ANTEC’2000, III, pp. 3148-3152, Orlando, Florida, May 7-11, 2000.
  38. Notch Sensitivity of Pipe Grade Polyethylene and Polybutylene, Conference Proceedings SPE/ANTEC’2000, III, pp. 3158-3161, Orlando, Florida, May 7-11, 2000.
  39. An Anomaly in the Lifetime-Temperature Relation of A Polybutylene for Pipe Applications, Conference Proceedings SPE/ANTEC’2000, III, pp. 3162-3166, Orlando, Florida, May 7-11, 2000.
  40. True-Stress-Strain-Temperature Diagrams of Polyolefins and Their Application in Acceleration Tests for Life Time Predication, Conference Proceedings SPE/ANTEC’2000, III, pp. 3189-3193, Orlando, Florida, May 7-11, 2000.
  41. The Effect of Chemical Degradation on Physical Properties and Fracture Behavior of Poly (Ethylene-Co-Carbon Monoxide) and Poly (1-Butene), Conference Proceedings SPE/ANTEC’2000, III, pp. 3228-3232, Orlando, Florida, May 7-11, 2000.
  42. Methodology for Durability analysis of HDPE Pipe, J. of Pressure Vessel Technology, 122, No. 2, pp. 152-155, May 2000.
  43. An Anomaly in the Lifetime-Temperature Relation of Polyolefins, Proceedings of the Fourth International symposium on Risk, Economy and safety, Failure Minimization and Analysis, Failures 2000, pp. 57, Umhlanga rocks, South Africa, July 24-28, 2000.
  44. Chlorine Resistance Testing of Plastic Piping Material, Conference Proceedings SPE/ANTEC’2001, III, pp. 2833-2839, Dallas, Texas, May 6-10, 2001.
  45. Failure Analysis of High Density Polyethylene in Engineering Applications, Conference Proceedings SPE/ANTEC’2001, III, pp. 2853-2855, Dallas, Texas, May 6-10, 2001.
  46. Geometrical Modeling of Cold Drawing (Necking) in Engineering thermoplastics, 2001 Mechanics and Materials Summer Conference, MMC2001, pp. 72, San Diego, CA, June 27 – 29, 2001.
  47. Ductile Failure and Delayed Necking in Polyethylene, In Conference: Plastics Pipes XI, Munich Germany, Sep. 3 – 6, 2001.
  48. Assessing Material Performance in Chlorinated Potable Water Applications, In Conference: Plastics Pipes XI, Munich Germany, Sep. 3 – 6, 2001.
  49. Configuration Mechanics of Necking Phenomena in Engineering Thermoplastics, Mechanics research Communication, 29, 465, 2002.
  50. Review of plastic pipe lifetime evaluation methods: predictive capability and limitations, Conference Proceedings SPE/ANTEC’2002, III, pp. 3134, San Francisco, CA, May 6-10, 2002.
  51. Accelerated testing for slow crack growth in HDPE, ANTEC 2003, proceeding of 61st Annual Technical Conference & Exhibition, vol. XLIX, Nashville, TN, May 4-8, Society of Plastics Engineering, pp. 2952-2956, 2003.
  52. Characterization of polyethylene resistance to slow crack growth, ANTEC 2003, Proceeding of 61st Annual Technical Conference & Exhibition, vol. XLIX, Nashville, TN, May 4-8, Society of Plastics Engineering, pp. 2976-2981, 2003.
  53. Fracture Initiation Associated with Chemical Degradation: Observation and Modelling, Int. J. of Solids and Structures, 42, 2, pp. 681-696, 2005.
  54. Crack Initiation in Engineering Thermoplastics Resulting from Chemical, Proceedings of ICF XI, Turin, Italy, 2005.
  55. Observation and Modeling of Stress Corrosion Cracking In Plastic Pipes, Proceedings of ANTEC 2005, Boston, MA, U.S.A.
  56. Stress Corrosion Crack Growth in Engineering Plastics, Proceedings of ICF XI, Turin, Italy, 2005.
  57. Formation of Micro-crack Network in Engineering Thermoplastic Resulting from Chemical Degradation, International Journal of Solids and Structures, 42, pp. 681-695, 2005.
  58. Crack Initiation in Pipe Grade Polyethylene, Proceedings of ANTEC 2006, Charlotte, U.S.A, 2006.
  59. Stress Corrosion Cracking in Plastic Pipes: Observation and Modeling, Int. J. Fracture, 145, 20, pp. 81-88, 2007.
  60. Effect of Inclusion Size and Location on PE Pipe Lifetime, Proceedings of ANTEC 2007, Cincinnati, OH, U.S.A, 2007.
  61. Modeling the Compressive Fracture Behavior of Foams for Energy Absorption, Journal of Cellular Plastics, vol.47, No. 4, July 2011.
  62. FTIR studies of factors affecting the diffusivity of oligo (oxyethylene) fatty acid ester in PE films : Effect of temperature, ethylene oxide chain length and base resin type, Polymer, 130, 150, 2017.
  63. Utilizing Statistical Analyses of Compliance Test Results to Define Market Trends in Headliner Countermeasure Applications, Proceedings of the 2009 Automotive Symposium India (ASI), February 4th and 5th, Mumbai, India, 2009.
  64. Thermal energy storage with high energy density and power density using macro-encapsulated phase change material, Poster, ACS, CERMACS, Cleveland, OH, March, 2009.
  65. Computational Fluid Dynamics Modeling of Latent Heat Discharge in a Macr-Encapsulated Phase Change material Device, presentation, ASME/SAE/IECEC joint symposium on thermal energy modeling, Denver, CO, May, 2009.
  66. Novel Applications of Phase Change Materials, Invited key note speech, May, Denver, CO, 2009.
  67. 2030 Vision for CFC in automotive, Invited Key note speech in SPE Automotive Composite Conference (ACCE), Troy, MI, July, 2009.
  68. Vision for CFC in automotive, Invited Plenary speech, Asian Polymer Association, Delhi, India, Dec., 2009.
  69. Accelerated Testing and Lifetime Prediction for Plastic Pipes, Proceedings of ANTEC 2012, Orlando, FL, U.S.A, 2012.
  70. Continuing Studies of Ductile-Brittle Transition of the Second Kind, Proceedings of ANTEC 2012, Orlando, FL, U.S.A, 2012.
  71. Lifetime assessment of engineering thermoplastics, International Journal of Engineering Science vol.59, p. 108-39, 2012.
  72. Dow R&D Overview and emphasis, Invited talk to GM Scientists & Engineers forum, 2011. 
  73. Dow Outlook of Bio-based Polymers – what makes sense for the industry, invited talk in a symposium organized by National Research Council & the National Academy of Sciences, 2012.
  74. Future Directions in Sustainable Packaging, Invited Lecture in EPSDIV of SPE ANTEC, 2017.

PATENTS GRANTED
25.    “Glycolide based Polyesters”; US9624341B1; Dow Global Technologies Inc., April (2017)
24    “FDCA based Polyesters made with isosorbide”; US9580542B1; Dow Global Technologies Inc., Feb. (2017)
23. “FDCA based Polyesters”; US9580594B1; Dow Global Technologies Inc., Feb. (2017)
22.    “Glycolide based Polyesters made with isosorbide”; US9394402B1; Dow Global Technologies Inc., July (2016)
21. “Thermal management of an electrochemical cell by a combination of heat transfer fluid and phase change material”; US9151545B1; Dow Global Technologies Inc., Oct (2015)
20.    “Thermal energy storage materials”; US9038709B1; Dow Global Technologies Inc., May (2015)
19. “Stabilized polyethylene material”; US8163226B2; Dow Global Technologies Inc., April (2012)

18. “Thermal Energy Storage”; US8091613B2; Dow Global Technologies Inc., June (2012)

17. “Bimodal polyethylene composition and articles made therefrom”; US8338538B2; Dow Global Technologies Inc., Dec (2012)

16. “Stabilized polyethylene material”; US7744972B2; Dow Global Technologies Inc., June (2010)

15. “Films with superior impact resistance and improved catastrophic failure resistance under high strain rate”; US7754341B2; Dow Global Technologies Inc., July (2010).

14. “Method for joining substrates and objects”; US7638007B2; Dow Global Technologies Inc., Dec. (2009).  

13. “Method for joining piping systems and piping equipment, fixtures, devices, structures and appliances”; US7510623B2; Dow Global Technologies, Inc., March (2009).

12. “Bimodal polyethylene composition and articles made therefrom”; US7345113B2; Dow Global Technologies Inc., March (2008).

11. “Bimodal polyethylene pipe composition and articles made therefrom”; US7129296B2; The Dow Chemical Company, Oct. (2006)

10.  “Bimodal polyethylene composition and articles made therefrom”; US6787608B2; The Dow Chemical Company, Sept. (2004). 

9.   “Cast stretch film of interpolymer compositions”; US6812289B2; The Dow Chemical Company, Nov. (2004).

8.   “Broad MWD, compositionally uniform ethylene interpolymer compositions, process for making the same and article made therefrom”; US6451916B1; Tmhe Dow Chemical Company. Sept. (2002)

7.   “Broad MWD, compositionally uniform ethylene interpolymer compositions, process for making the same and article made therefrom”; US6319989B1; The Dow Chemical Company. Nov. (2001).

6.   “Propylene polymer composition”; US 6300419B1; The Dow Chemical Company. Oct. (2001).

5.   “Polymer compositions having improved elongation”; US6300398B1; The Dow Chemical Company, Oct. (2001)

4.  “Molding composition containing syndiotactic vinylaromatic polymer”; US6239217, The Dow Chemical Company, May (2001).

3.  “Disposable articles having a continuous thermoplastic coating comprising a metallocene polyolefin”; US6120887, H. B. Fuller Licensing & Financing, Inc., Sept. (2000)  

2.  “Impact-modified thermoplastic polyolefins and articles fabricated therefrom”; US6140420A; Dow Global Technologies Inc., Oct. (2000)

1.  “Impact-modified thermoplastic polyolefins and articles fabricated therefrom”; US5861463A; Dow Global Technologies Inc., Jan. (1999).

About 52 filed patent applications are still under evaluation at the US patent office