| http://www.w3.org/ns/prov#value | - The phenolic reactant is preferably a di- or polyhydroxy compound of the formula ##STR1## in which each a and b is independently 0, 1, 2 or 3 and at least one a is not 0; n is within the range of 0 to about 8, preferably 0-3; each R is independently selected from non-interfering alkyl, aryl, alkaryl, heteroatomic, heterocyclic, carbonyloxy, carboxy, and the like ring substituents, such as hydrogen
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