| http://www.w3.org/ns/prov#value | - The compositions of the present invention may contain one or more synthetic oils and esters of formula R1COOR2 in which R1 is chosen from linear and branched higher fatty acid groups comprising from 1 to 40 carbon atoms, such as from 7 to 19 carbon atoms; and R2 is chosen from branched hydrocarbon-based groups comprising from 1 to 40 carbon atoms, such as from 3 to 20 carbon atoms, with the provis
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