Use-dependent indicator system for absorbent articles

Details Use-dependent indicator system for absorbent articles Use-dependent indicator system for absorbent articles

G - Physics

01

N

G01N 21/78 (2006.01) A47L 13/17 (2006.01) A61L 2/16 (2006.01) A61L 2/26 (2006.01) D06M 23/16 (2006.01) D06P 1/00 (2006.01)

Patent

CA 2393542

A use-dependent indicator system for detecting the exhaustion of an active chemical within an absorbent article is provided. The indicator system includes at least one dye component and a polymer mixture. The dye component(s) can be non-reactive and/or reactive dyes. The polymer mixture can contain a polymer, such as a latex adhesive, to facilitate control over the dissolution rate of the dye component(s). By controlling the dissolution rate of the dye component(s), an indicator system of the present invention can impart a change in color to signal the exhaustion of an active chemical incorporated within the absorbent article, such as an anti-microbial agent.

L'invention concerne un système indicateur dépendant de l'utilisation permettant de détecter l'épuisement d'un produit chimique actif dans un article absorbant. Ce système indicateur comprend au moins un composant colorant et un mélange de polymères. Le(s) composant(s) colorant(s) peut/peuvent être un/des colorant(s) non réactif(s) et/ou réactif(s). Le mélange de polymères peut contenir un polymère, comme un adhésif de latex, pour assurer le contrôle du taux de dissolution des composants colorants. En contrôlant le taux de dissolution des composants colorants, un système indicateur selon la présente invention peut conférer un changement de couleur pour signaler l'épuisement d'un produit chimique actif incorporé dans l'article absorbant, tel qu'un agent anti-microbien.

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