a curing agent comprising a plurality of groups that are reactive with {HEAD ~ the functional groups} on {TAIL ~ compound}  
on
a curing agent comprising a plurality of groups that are reactive with { HEAD ~ the functional groups } on { TAIL ~ compound }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH