| http://www.w3.org/ns/prov#value | - rs, of the present invention can be reacted with alcohols, e g to form esters The alcohols may be aliphatic compounds such as monohydnc and polyhydric alcohols or aromatic compounds such as phenols and naphthois The esters may be prepared, for example, by reacting a suitable alcohol or phenol with the acid or anhydride (i e , functionalized polymer succinic anhydride) Ester derivatives likewise ma
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