It is contemplated to employ two or more different dihydric phenols or {HEAD ~ a copolymers} of a dihydric phenol with a glycol or with hydroxy or acid terminated polyester, or with {TAIL ~ a dibasic acid} in the event that a carbonate copolymer or interpolymer rather than a homopolymer is desired for use as component  
It is contemplated to employ two or more different dihydric phenols or { HEAD ~ a copolymers } of a dihydric phenol with a glycol or with hydroxy or acid terminated polyester , or with { TAIL ~ a dibasic acid } in the event that a carbonate copolymer or interpolymer rather than a homopolymer is desired for use as component
OTH OTH 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 OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH