{HEAD ~ 58.50 wt %} of an oligomer prepared by reaction of: 51.68 wt % of {TAIL ~ polypropylene glycol}, MW=4200, 0.09 wt % of 2,6 di tert butyl p cresol, 4.76 wt % of isophorone diisocyanate, 0.03 wt % of dibutyl tin dilaurate, and 1.94 wt % of 2 hydroxyethyl acrylate 
{ HEAD ~ 58.50 wt % } of an oligomer prepared by reaction of : 51.68 wt % of { TAIL ~ polypropylene glycol } , MW=4200 , 0.09 wt % of 2,6 di tert butyl p cresol , 4.76 wt % of isophorone diisocyanate , 0.03 wt % of dibutyl tin dilaurate , and 1.94 wt % of 2 hydroxyethyl acrylate
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH