Vuba aha, Bridgestone yaciye ifata ingingo yo kugurisha igiterwa c’imipira y’imipira gikozwe n’ishirahamwe ry’ibuye ry’umuriro ry’umuriro ku bahinga b’intare z’intare.
Bivugwa ko uruganda rutanga cane cane styrene-butadiene, kandi umuguzi Lion Elastomers ni umuhinguzi w’imipira y’amaguru{1}}
Iryo soko rimaze kurangira, ama Polymers y’umuriro azokurwa mu bikorwa vy’ugutanga imipira y’imipira y’amaguru.
Ariko rero, Bridgestone iracari n’uruganda rw’imipira y’imipira ya SBR muri Louisiana, muri Leta Zunze Ubumwe za Amerika, no mu laboratwari muri Akron{1}}
Amajambo y'ivy'amahera y'ivyo bikorwa ntiyamenyeshejwe.
Jesse Zeringue, umuyobozi mukuru wa Lion Elastomers, yavuze ko bamaze imyaka mirongo bafitaniye ubucuti bukomeye na Bridgestone mu myaka mirongo. Ivyo bizofasha guhindura ubucuruzi bwabwo .
Biratahurwa ko kuva mu mwaka w’2005, iyo sosiyete yakoze ibintu bitatu vy’agaciro kanini be n’ivyo agura. Ubu, ubu, bahingura ikimenyetso ca Royale EPDM etylene cherlene n’imipira ya SBR mu mahinguriro mu mahinguriro abiri y’Amerika.