Ethylene propylene rabara (makamaka binary ethylene propylene rabara) amagwiritsidwa ntchito mochuluka ngati viscosity index modifier (OVI kapena VII) kwa mafuta ambiri a hydrocarbon kuti azitha kuyamwa bwino pamafuta okwera komanso otsika komanso kuti mafutawo azigwira ntchito bwino pazikhalidwe zosasunthika komanso zosinthika.
Ethylene propylene rabara imafuna mphamvu yokhuthala kwambiri, malo otsika otsika komanso cholozera chokhazikika cha shear ikagwiritsidwa ntchito ngati chowonjezera chamafuta, petulo ndi dizilo.

Maupangiri:
EPDM:CO 033;CO 034;CO 043;CO 054;