Solubilization of low 2-phenyl alkylbenzene sulfonates

C - Chemistry – Metallurgy – 11 – D

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C11D 1/83 (2006.01) C11D 1/22 (2006.01) C11D 1/722 (2006.01)

Patent

CA 2340400

Methods and compositions relating to solubilization of alkylbenzene sulfonate surfactants in detergent formulations. Addition of one or more ethylene oxide/propylene oxide block copolymers to detergents including alkylbenzene sulfonate surfactants may be used to increase solubility of the alkylbenzene sulfonate surfactants. Increased solubility of the alkyl benzene sulfonate surfactants serves to lower the cloud point of the detergents permitting, for example, the formulation of liquid detergent compositions containing greater concentrations of low 2-phenyl linear alkylbenzene sulfonate surfactants.

L'invention concerne des procédés et des compositions ayant trait à la solubilisation de tensioactifs de sulfonate d'alkylbenzène dans des formulations de détergent. On peut ajouter un ou plusieurs copolymères séquencés d'oxyde d'éthylène/oxyde de propylène à des détergents renfermant des tensioactifs de sulfonate d'alkylbenzène pour accroître la solubilité des tensioactifs de sulfonate d'alkylbenzène. Une solubilité accrue des tensioactifs de sulfonate d'alkylbenzène sert à abaisser le point de trouble des détergents, ce qui permet, par exemple, d'obtenir une formulation de compositions de détergent liquide contenant des concentrations plus élevées de tensioactifs de sulfonate d'alkylbenzène linéaires 2-phényle inférieurs.

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