Especially preferred dihydric phenols are {HEAD ~ bisphenol A} and {TAIL ~ 2,2 bispropane} 
Especially preferred dihydric phenols are { HEAD ~ bisphenol A } and { TAIL ~ 2,2 bispropane }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL