Coated water-swellable material

Details Coated water-swellable material Coated water-swellable material

C - Chemistry, Metallurgy

08

J

C08J 3/12 (2006.01) C08J 7/04 (2006.01) C08L 101/14 (2006.01)

Patent

CA 2534285

This invention is directed to coated water-swellable materials, typically solid, particulate, water-swellable materials, i.e. materials that comprise hydrogel-forming polymers, whereof at least a part is coated with a coating, which substantially does not break when the polymers swell, as set out in the method herein. Said coating is present at a level of at least 1% by weight of the water-swellable material. The coating comprises preferably an elastomeric polymeric material. The invention also relates products, e.g. disposable absorbent articles, comprising such coated water-swellable material.

La présente invention concerne des matières gonflables dans l'eau revêtues, des matières gonflables dans l'eau, particulaires, généralement solides, à savoir, des matières qui contiennent des polymères formant des hydrogels. Au moins une partie des matières est recouverte d'un revêtement qui ne se rompt pratiquement pas lorsque les polymères se dilatent, comme cela est mentionné dans le procédé. Ce revêtement est présent à un niveau d'au moins 1 % en poids de la matière gonflable dans l'eau. Ce revêtement contient, de préférence, une matière polymère élastomère. Ladite invention a aussi trait à des produits, par exemple, des articles absorbants jetables renfermant une telle matière gonflable dans l'eau revêtue.

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