Aqueous polyurethane dispersions comprising polyurethane polymer and
methods for making and using same are disclosed herein. In one aspect of
the present invention, aqueous polyurethane dispersions, comprising a
polyurethane polymer having a weight average molecular weight ranging
from 20,000 to 80,000, are prepared by controlling the weight average
molecular weight of the polymer by reacting the isocyanate terminated
prepolymer with at least one chain terminating agent; and/or maintaining
a N/COOH molar ratio of amine in the neutralizing agent to acid
functional group in the isocyanate reactive compound to from about 0.5:1
to about 1:1.