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