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In this study, PU dispersions containing varying amounts of polydimethylsiloxane (PDMS, MW 1400), polytetramethylene glycol (PTMG, MW 2000), and polypropylene glycol (PPG, MW 1000) were synthesized, characterized and applied on fabrics. The purpose of incorporating PDMS in these PU dispersions is to provide permanent hand on fabrics, since it is well known that aminosilicones are the most widely used softerners for fabrics but its flaw is in the inherent poor water-washung resistance. The prepolymer mixing method was used for the synthesis of these dispersions and was found to be very successful. The dispersions thus obtained possess physical properties characteristic of PTMG, PDMS and PPG. Infrared (IR) spectra of the thin cast PUD films were taken on a Nicholet 520 model and the peaks characteristic of -N-CO-O-, -C-O- and -Si-O- bonds provide definitive evidence of the formation of these polyurethane dispersions. Thermal studies by dynamic mechanical analysis (DMA) and differential scanning calorimetry (DSC) showed that the soft segments were phase segregated. However the glass transition temperatures (Tg) of the PDMS (-123 degree C) in the main PU chains were too weak to be observed for the most of the samples due to its weak response to the DSC and DMA. The PU dispersions were applied on fabrics and the result swowed that treated fabric has improved hand, some treated nylon samples even possessed peach-skin property.