| http://www.w3.org/ns/prov#value | - R is independently selected from monovalent hydrocarbyl groups, with the proviso that at least about 60 mole %, and preferably at least about 80 mole %, of the R groups contain from 6 to 18 carbon atoms, more preferably 6 to 12 carbon atoms; and n is an integer in the range of from about 80 to about 50,000.
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