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