Cleaning articles treated with a high internal phase inverse...

C - Chemistry – Metallurgy – 11 – D

Patent

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Details

C11D 17/04 (2006.01) A61K 8/06 (2006.01) D21H 19/18 (2006.01) D21H 21/14 (2006.01)

Patent

CA 2253357

The invention relates to articles useful in cleansing, and particularly to wet- like cleansing wipes that are especially useful for hardsurface cleaning, and in personal cleansing such as baby wipes and particularly for removal of perianal soils. These articles comprise: a carrier and an emulsion applied to the carrier. The emulsion comprises: (1) from about 2 to about 60 % of a continuous solidified lipid phase comprising a waxy lipid material having a melting point of about 30 °C of higher; (2) from about 39 to about 97 % of an internal polar (e.g., water) phase dispersed in the lipid phase; (3) an effective amount of a non-silicon containing emulsifier, where the emulsifier has a viscosity at 55 °C of more than about 500 centipoise; and (4) an optional second emulsifier having a viscosity at 55 °C of less than about 400 centipoise. Because the emulsion comprises the waxy external phase, the internal polar phase is retained in the emulsion until in-use shear pressures break the emulsion, thereby providing desired moisture for cleaning. The invention also relates to a process for making the cleaning articles.

La présente invention concerne des articles utiles pour le nettoyage, en particulier des lingettes nettoyantes de type humide qui sont particulièrement utiles pour le nettoyage de surfaces dures, pour les soins personnels sous forme de lingettes pour bébé, et surtout pour l'élimination des souillures périanales. Lesdits articles sont composés d'un support et d'une émulsion appliquée sur le support. L'émulsion est composée (1) d'environ 2 à environ 60 % d'une phase grasse continue solidifiée comprenant une matière grasse cireuse dont le point de fusion est d'environ 30 DEG C ou plus, (2) d'environ 39 à environ 97 % d'une phase polaire (par ex., aqueuse) interne dispersée dans la phase grasse, (3) d'une quantité efficace d'un émulsifiant non siliconique dont la viscosité à 55 DEG C est supérieure à environ 500 centipoises, et (4) d'un deuxième émulsifiant facultatif dont la viscosité à 55 DEG C est inférieure à environ 400 centipoises. Etant donné que ladite émulsion comprend une phase externe cireuse, la phase polaire interne est retenue dans l'émulsion jusqu'à ce que les contraintes de cisaillement au cours de l'utilisation rompent l'émulsion qui libère de la sorte l'humidité désirée pour le nettoyage. La présente invention concerne également un procédé permettant de fabriquer lesdits articles nettoyants.

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