The curing composition 1, wherein {HEAD ~ the component} is {TAIL ~ tin carboxylate} which is a non organotin compound and in which the carbon atom adjacent to the carbonyl group is a quaternary carbon atom 
is
The curing composition 1 , wherein { HEAD ~ the component } is { TAIL ~ tin carboxylate } which is a non organotin compound and in which the carbon atom adjacent to the carbonyl group is a quaternary carbon atom
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL 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