I-HTPB, eyaziwa ngokuba yi-hydroxyl-terminated polybutadiene, i-polymer ethandwayo kumashishini ahlukeneyo ngenxa yeempawu zayo ezizodwa kunye nokuguquguquka. Kweli nqaku, siza kuphonononga izicelo ezahlukeneyo kunye nokusetyenziswa HTPB. I-HTPB yirabha eyenziwe eyenziwe ngepholymerized esuka kwibutadiene kunye nexabiso elincinci le-divinylbenzene. Izinto ezibangelwayo zibonakaliswa yi-hydroxyl (-OH) yayo termini, enika ezininzi izinto ezifunwayo kwipolymer.