A timeline of success

More than 50 years of technological advances have helped us keep up with ethylene propylene diene (EPDM) rubber development.

Technology and investment milestones  

1961Vistalon™ EPDM rubber is born First commercially manufactured ethylene-propylene elastomer at the plant in Baton Rouge, Louisiana.  Quickly found acceptance in high voltage electrical applications because it did not degrade over time, offering long service-life.
1966Dedicated U.S. capacityButyl capacity in Baton Rouge converted to EPDM rubber production.
1972 New plant in EuropeConstruction of new EPDM rubber plant in Notre Dame de Gravenchon, France. 
1981Santoprene™ TPV
EPDM rubber cross-linked within a PP matrix to produce Santoprene TPV, another technological innovation that has become renowned for its proven performance.
1989Tailored molecular weightFirst commercial grades of EPDM rubber manufactured using proprietary tailored molecular weight distribution technology were introduced for molded and extruded goods. 
Late 1990sMetallocene technologyMetallocene catalyst technology for development of new Vistalon EPDM grades
2000sBroadest EPDM rubber portfolioDuring the 2000s advanced technology leads to ExxonMobil Chemical offering one of the broadest portfolios of EPDM and other polyolefin elastomers in the world with Z-N and metallocene catalyst technologies complementing each other.
2003New U.S. plantNew plant added in Baton Rouge, using metallocene catalyst technology, provides greater control of the molecular structure, giving more uniform molecules.
201150th anniversaryCelebrating 50 years of Vistalon EPDM, ExxonMobil Chemical is set to maintain its position among market leaders through continued investment in capacity, new grades, and technical and application support.
New grades that use the attributes of metallocene catalyst deliver improved compression set at low and high temperatures for molded and extruded applications.
2012Vistalon EPDM rubber production increase 50kt/year increased production capacity of Vistalon EPDM in our U.S. metallocene plant. 
2014 Vistalon EPDM rubber capacity increaseProject for a new plant in Al-Jubail, Saudi Arabia which will include a new Vistalon EDPM unit, is at an advanced stage and is expected to be completed in 2015.