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1980
Development of the slurry stabilization process.
Halobutyl improved by production of bromobutyl by direct bromination of butyl cement, which provided small but important improvements in compatibility and adhesion for tire-related applications, especially in demanding areas, such as truck innerliners.
1984-86
Development of Star-Branched Butyl and Halobutyl polymers. Processing benefits included improved green strength, faster stress relaxation and improved mixing, calendering and extrusion.
1985
Vistalon Elastomer Rubber business start-up of a semi-works unit at Notre Dame de Gravenchon, France.
1987
Invention of a new generation of isobutylene-based elastomers via copolymers of p-methyl styrene and isobutylene which are subsequently brominated (later named Exxpro Specialty Elastomers).
Exxpro elastomers demonstrate excellent ozone, heat and age resistance with versatile cure compatibility with GPR rubbers and are also capable of a variety of chemical modifications.
ExxonMobil Chemical brings on-stream its commercial capability to tailor compositional distribution of EPDM (ethylene propylene diene monomer).
1988
ExxonMobil Chemical commercializes tailored molecular weight distributions Vistalon EPDM at its Notre Dame de Gravenchon plant.
ExxonMobil Chemical starts production of EPDM ethylene propylene rubber in South Korea via joint venture plant.
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