I-HTPB, eyaziwa nangokuthi i-hydroxyl-terminated polybutadiene, iyi-polymer ethandwa kakhulu ezimbonini ezihlukahlukene ngenxa yezakhiwo zayo eziyingqayizivele kanye nokuhlukahluka. Kulesi sihloko, sizohlola izinhlelo ezahlukene kanye nokusetshenziswa kwe-HTPB. I-HTPB iyirabha yokwenziwa eyenziwe nge-polymerized kusuka ku-butadiene kanye nenani elincane le-divinylbenzene. Impahla ewumphumela ibonakala nge-hydroxyl (-OH) termini yayo, edlulisela izinto eziningi ezifiselekayo ku-polymer.