The amount of {HEAD ~ the metal} contained in {TAIL ~ the flexible thermosetting resin} and the thermosetting resin containing the boron is preferably present in excess of the amount stoichiometrically necessary to combine with the boron present 
contained in
The amount of { HEAD ~ the metal } contained in { TAIL ~ the flexible thermosetting resin } and the thermosetting resin containing the boron is preferably present in excess of the amount stoichiometrically necessary to combine with the boron present
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL 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