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Abstract

A surfactant composition comprising alkylarylsulfonate molecules wherein more than 30 wt. % of the alkylarylsulfonate molecules of the surfactant composition are species of the formula:

description='In-line Formulae' end='lead'[R—X—Ar(SO₃)⁻]_a[Mⁿ⁺]_b description='In-line Formulae' end='tail'

wherein:

X is a linear acyclic aliphatic hydrocarbyl chain;R is bound to a non-terminal carbon atom of X and is selected from H and C1 to C3 alkyl groups;X and R together have 10 or less carbon atoms, preferably 9 or 10 carbon atoms, most preferably 10 carbon atoms;Ar is an aromatic group;M is a cation or cation mixture,n is selected from 1, 2 and 3; anda and b are selected such that the alkylarylsulfonate molecule is electroneutral.

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First Claim