Isoprene → HCID 19842620, compound

Participants

Reaction Steps

As analyzed by proton nuclear magnetic resonance spectroscopy (nmr), the SIS triblock elastomer contained 85.0 wt. % isoprene and 15.0 wt. % styrene. The microstructure of the polyisoprene centerblock was 10.0% 3,4-addition and 90.0% 1,4-addition. The weight average molecular weight, Mw, was 148,000 and the molecular weight distribution, Mw/Mn was 1.07 as determined by gel permeation chromatography (GPC). Properties of molded samples included a tensile strength at rupture of 2510 psi (17,300 KPa) and an ultimate elongation of 1280%.

Provenance & Evidence