The present invention relates to {TAIL ~ a process} for purifying {HEAD ~ a polar vinyl compound} such as N vinylcarboxamides 
The present invention relates to { TAIL ~ a process } for purifying { HEAD ~ a polar vinyl compound } such as N vinylcarboxamides
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH