I-HP550J ilayisensi ngabakwa-Lyondell Basell'Ubuchwepheshe beSpheripol. I-propylene yempahla eluhlaza ikhiqizwa ngenqubo ye-PDH, futhi okuqukethwe kwesibabule se-propylene monomer kuphansi kakhulu. Umkhiqizo unezici zamandla aphezulu, ukuqina okuphezulu, i-ductility enhle, ukucubungula okulula, iphunga eliphansi nokunye.