More particularly, it relates to {HEAD ~ materials} in which {TAIL ~ the fire retardant agent} is a water insoluble resin 
More particularly , it relates to { HEAD ~ materials } in which { TAIL ~ the fire retardant agent } is a water insoluble resin
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH