The amount of {HEAD ~ viscosity} reducing {TAIL ~ agent} often ranges from about 1 percent to about 10 percent, preferably about 2 percent to about 6 percent, based on the total weight of the formulation 
reducing
The amount of { HEAD ~ viscosity } reducing { TAIL ~ agent } often ranges from about 1 percent to about 10 percent , preferably about 2 percent to about 6 percent , based on the total weight of the formulation
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH