| http://www.w3.org/ns/prov#value | - lue of from 1 to 3, preferably 1 to 2, and the sum of w and x has a maximum value of5, preferably a maximum value of 3; wherein each R' is hydrogen or an alkyl group containing from 1 to 5 carbon atoms, R is an alkylene group containing from 3 to 8 carbon atoms, the total number of carbon atoms in R and R does not exceed 12, preferably it does not exceed 8, y and y each have a value of from O
|
