Ultra-high-molecular-weight polyethylene (UHMWPE) with an elevated melting point Tm of up to 144°C has been successfully fabricated by suspension polymerization initiated by Ziegler–Natta catalysts in a 1H,4H-octafluorobutane medium. This method allows one to efficiently perform the polymerization at a near-ambient temperature and a near-atmospheric ethylene pressure. The obtained polyethylenes have been characterized by IR spectroscopy, elemental analysis, and thermal analysis, and the melting points and degrees of crystallinity of the synthesized polymers have been found.