This invention relates to fluorochemical compounds and compositions for {HEAD ~ use} in providing repellent properties to {TAIL ~ a substrate material} 
This invention relates to fluorochemical compounds and compositions for { HEAD ~ use } in providing repellent properties to { TAIL ~ a substrate material }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL