“Partially thickened” means that the coating is in {HEAD ~ a state} between the two forms in which retains a measure of {TAIL ~ malleability} 
“ Partially thickened ” means that the coating is in { HEAD ~ a state } between the two forms in which retains a measure of { TAIL ~ malleability }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL