Ethylene-propylene rubber

{
  "id": "MLC-T-ENV-010161",
  "term": "Ethylene-propylene rubber",
  "field": "Environment",
  "term_source": "Ethylene-Propylene Rubber",
  "definition": "Ethylene-propylene copolymer or an ethylene-propylene terpolymer. Ethylene-propylene copolymers (EPM) result from the polymerization of ethylene and propylene and contain a saturated chain of the polymethylene type. Ethylene-propylene terpolymers (EPDM) are produced in a similar manner as EPM, except that a third monomer is added to the reaction sequence. Typical third monomers include ethylidene norbornene, 1,4-hexadiene, or dicyclopentadiene. Ethylidene norbornene is the most commonly used. The production process includes, but is not limited to, polymerization, recycle, recovery, and packaging operations. The polymerization reaction may occur in either a solution process or a suspension process.",
  "subject": "Chemical substances",
  "references": [
    "40 CFR 63.482 (CFR 2018)"
  ],
  "url": "https://mlchart.com/terminology/environment/ethylene-propylene-rubber/"
}