| http://www.w3.org/ns/prov#value | - m, a group having 1-20 carbon atoms, R are identical or different and are each hydrogen, an alkyl group or an aromatic group and n and m are each an integer greater than orequal to 10, ##STR00009## wherein R' are identical or different and are each an alkyl group or an aromatic group and n is an integer greater than or equal to 10.16.
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