{HEAD ~ 65.00 wt %} of an oligomer prepared by reaction of: 57.47 wt % of polypropylene glycol, MW=4200, 0.1 wt % of 2,6 di tert butyl 4 methylphenol, 5.25 wt % of isophorone diisocyanate, 0.03 wt % of dibutyl tin dilaurate, and 2.15 wt % of {TAIL ~ 2 hydroxyethyl acrylate} 
{ HEAD ~ 65.00 wt % } of an oligomer prepared by reaction of : 57.47 wt % of polypropylene glycol , MW=4200 , 0.1 wt % of 2,6 di tert butyl 4 methylphenol , 5.25 wt % of isophorone diisocyanate , 0.03 wt % of dibutyl tin dilaurate , and 2.15 wt % of { TAIL ~ 2 hydroxyethyl acrylate }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL