| http://www.w3.org/ns/prov#value | - Examples of polynuclear dihydric phenols are those having the formula: wherein Ar is an aromatic hydrocarbon such as naphthylene and, preferably, phenylene: A and A1 can be the same or different are alkyl radicals, preferably including from 1 to 4 carbon atoms, halogen atoms, i.e., fluorine, chlorine, bromine, and iodine, or alkoxy radicals, preferably having from 1 to 4 carbon atoms; x and y are
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