| http://www.w3.org/ns/prov#value | - ##STR130## Typical diester and diacid chloride reactants are of the general formulae ##STR131## wherein R, R1, and R2 are each, independently from the others, alkyl groups, including cyclic and substituted alkyl groups, preferably with from 1 to about 30 carbon atoms, aryl groups, including substituted aryl groups, preferably with from 6 to about 30 carbon atoms, or arylalkyl groups, including sub
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