| http://www.w3.org/ns/prov#value | - is 1 or 2, x is 1 to 150, y is 0 to 15 and z is 0 to 4; iv) 0 to 90 mol % of at least one component of the formula 6a, 6b, or 6c: wherein M is a hydrogen atom, a mono- or divalent metal cation, an ammonium ion or an organic amine residue, a is 1, or when M is a divalent metal cation a is ???; wherein X is ???OMa, ???O???(CmH2mO)n???R in which R1 is a hydrogen atom, an aliphatic hydrocarbon radical
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