| http://www.w3.org/ns/prov#value | - 9## wherein R and R1 are members of the group consisting of hydrogen and methyl; R2 is a member of the group consisting of methyl, ethyl, propyl and butyl; R3 is a member of the group consisting of methyl and ethyl; n represents from 3 to 12 weight percent based on the combined weight of n, x, y and z; x represents from 8 to 25 percent based on the combined weight of n, x, y and z; y represents fr
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