| prov:value
| - Non-limiting examples of suitable diols are 2,2???-bi-7-naphtol, 1,4-dihydroxybenzene, 1,3-dihydroxybenzene, 10,10-bis(4-hydroxyphenyl)anthrone, 4,4???-sulfonyldiphenol, bisphenol, 4,4???-(9-fluorenylidene)diphenol, 1,10-decanediol, 1,5-pentanediol, diethylene glycol, 4,4???-(9-fluorenylidene)-bis(2-phenoxyethanol), bis(2-hydroxyethyl)terephthalate, bis[4-(2-hydroxyethoxy)phenyl] sulfone, hydroqui
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