Detergent composition containing amine oxide and sulfonate...

C - Chemistry – Metallurgy – 11 – D

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C11D 1/83 (2006.01) C11D 1/86 (2006.01) C11D 17/06 (2006.01) C11D 1/14 (2006.01) C11D 1/29 (2006.01) C11D 1/52 (2006.01) C11D 1/75 (2006.01)

Patent

CA 2173103

A detergent composition in form of agglomerates is provided. The detergent composition contains from about 1 % to 50 % by weight of a detersive surfactant system. The surfactant system itself includes, by weight of the surfactant system, (i) at least about 30 % of a sulfated surfactant selected from alkyl sulfates, alkyl ethoxy sulfates, secondary alkyl sulfates and mixtures thereof, (ii) from about 0,1 % to about 10 % of an amine oxide surfactant, and (iii) from about 2 % to about 60 % of a linear alkylbenzene sulfonate surfactant. Also, the detergent composition includes at least about 1 % by weight of a detergency builder to enhance cleaning. The surfactant system and the builder are agglomerated to form detergent agglomerates which are substantially free of phosphates. The anionic surfactants in the detergent composition have significantly improved dissolution in aqueous laundering solutions, especially those kept at cold temperatures, i.e. 5 °C to 30 °C.

L'invention concerne une composition détergente sous la forme de granulés. La composition détergente contient entre environ 1 % et 50 % en poids de tensioactif à pouvoir détergent. Le système de tensioactifs contient, en pourcentage du poids du système total (i) au moins 30 % environ d'un détergent sulfaté choisi parmi les alkyle sulfates, les alkyléther sulfates, les alkyle sulfates secondaires et leurs mélanges, (ii) de 0,1 % environ à 10 % environ d'un tensioactif du type oxyde d'amine et (iii) de 2 % environ à 60 % environ d'un tensioactif du type alkylbenzène sulfonate linéaire. Egalement, la composition détergente contient au moins 1 % environ en poids d'un adjuvant de détergence pour améliorer le nettoyage. Le système de tensioactifs et d'adjuvants est aggloméré pour former un détergent granulé qui est sensiblement exempt de phosphates. Les tensioactifs anioniques de la composition détergente ont une solubilité nettement améliorée dans les solutions de lavage aqueuses, en particulier celles dont la température est basse, c'est-à-dire dans la plage de 5 ~C à 30 ~C.

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