A fusible phenolic resin and a dialkyl N, N bis aminoalkyl phosphonate are condensed to form {HEAD ~ a water insoluble resin} having {TAIL ~ fire retardant properties} 
having
A fusible phenolic resin and a dialkyl N , N bis aminoalkyl phosphonate are condensed to form { HEAD ~ a water insoluble resin } having { TAIL ~ fire retardant properties }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL