Solid alkylbenzene sulfonates and cleaning compositions...

Details Solid alkylbenzene sulfonates and cleaning compositions... Solid alkylbenzene sulfonates and cleaning compositions...

C - Chemistry, Metallurgy

11

D

C11D 1/22 (2006.01) C11D 17/00 (2006.01)

Patent

CA 2398494

This invention is directed to detergent compositions which employ sulfonated linear alkylbenzenes as surfactants, wherein the sulfonated linear alkylbenzenes have a higher content of the sulfonated 2-phenyl alkylbenzene isomers than was previously available in sulfonated phenyl alkylbenzene surfactants of the prior art. Cleaning compositions according to the invention are more effective as cleaning agents over their counterparts of prior art which contain sulfonated linear alkylbenzenes having lower contents of the 2- phenyl alkylbenzene isomers, owing to an unexpected increase in tolerance of water hardness minerals normally associated with precipitation of the active detergent agent. Solid sulfonate salts of alkylbenzenes are also provided, including dry formulations containing same.

L'invention concerne des compositions de détergeant employant des alkylbenzènesulfonates linéaires comme surfactants, dans lesquels les alkylbenzènesulfonates linéaires présentent une quantité d'isomères alkylbenzènesulfonates 2-phényl supérieure à celle que l'on trouvait précédemment dans les surfactants alkylbenzènesulfonates phényl connus dans l'art antérieur. Les compositions de nettoyage réalisées grâce à la présente invention sont plus efficaces comme agents de nettoyage que leurs prédécesseurs de l'art antérieur qui contiennent des alkylbenzènesulfonates linéaires possédant des quantités inférieures d'isomères alkylbenzène 2-phényl, ceci étant dû à une augmentation inattendue de la tolérance à la dureté de l'eau des minéraux habituellement associés à la précipitation de l'agent détergeant actif. Les sels sulfonés d'alkylbenzènes solides sont également fournis comportant des préparations sèches contenant les mêmes.

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