{HEAD ~ The composition} may alternatively or in addition contain a “viscosity improver” such as an elastomeric polymer with {TAIL ~ a low glass transition point}, which by increasing the viscosity of the solution improves its performance as a filling material 
{ HEAD ~ The composition } may alternatively or in addition contain a “ viscosity improver ” such as an elastomeric polymer with { TAIL ~ a low glass transition point } , which by increasing the viscosity of the solution improves its performance as a filling material
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH