Absorbent composition

C - Chemistry – Metallurgy – 08 – J

Patent

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Details

C08J 3/075 (2006.01) A61L 15/60 (2006.01) C08L 101/14 (2006.01)

Patent

CA 2269673

Disclosed is an absorbent composition comprising each of an acidic and a basic material, wherein the absorbent composition exhibits desirable absorbent properties. Specifically, the present invention relates to an absorbent composition comprising either an acidic water-swellable, water-insoluble polymer having a pKa between about 2 to about 12 or a basic water-swellable, water-insoluble polymer having a pKb between about 2 to about 12 and either a basic or an acidic second material. The absorbent composition has the ability to slowly absorb a large quantity of liquid, particularly while under an external pressure. The absorbent composition is useful in disposable absorbent products, such as those disposable absorbent products that are used to absorb bodily liquids.

Composition absorbante constituée d'une matière acide et d'une matière basique, cette composition absorbante se caractérisant par des propriétés absorbantes désirables. De manière plus spécifique, cette invention concerne une composition absorbante comprenant soit un polymère acide insoluble dans l'eau et gonflant dans l'eau dont la valeur pK¿a? se situe entre environ 2 et environ 12 soit un polymère basique insoluble dans l'eau et gonflant dans l'eau dont la valeur pK¿b? se situe entre environ 2 et environ 12, et une deuxième matière soit basique soit acide. Cette composition absorbante est capable d'absorber lentement une grande quantité de liquide particulièrement lorsqu'elle est soumise à une pression extérieure; elle est utile dans des produits absorbants jetables tels que ceux qu'on utilise pour absorber des liquides corporels.

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