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