In the polymerization of ethylene to produce crystalline polyethylene wax using the homogeneous titanium-based catalyst, the effects of various parameters such as catalyst, temperature, pressure, comonomer and time on the performance of catalyst and the properties of polyethylene wax were investigated. The properties of polyethylene wax obtained were characterized in terms of molecular weight, molecular weight distribution, crystallinity, density and morphology. Among the polymerization features with a series of mixed cocatalyst systems of (C₂H₅)₃Al, (i-C₄H₉)₃Al, (C₂H₅)₂AlCl and (C₂H₅)₃Al₂Cl₃, it turned out that the combination of (C₂H₅)₃Al and (C₂H₅)₃Al₂Cl₃ was more effective than any other combination. It was noted that the activity of catalyst and the properties of polyethylene wax were affected by the polymerization parameters, i.e. time, temperature and hydrogen partial pressure. The various kinds of crystalline polyethylene wax could be obtained by careful control of these parameters. Also we could obtain low density down to 0.91 g/cc by use of 1-butene as a comonomer.