A pressure sensitive adhesive composition comprising a...

A - Human Necessities – 61 – L

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A61L 24/08 (2006.01) A61F 5/443 (2006.01) A61L 24/00 (2006.01) A61L 24/06 (2006.01) A61L 28/00 (2006.01)

Patent

CA 2367366

A pressure sensitive adhesive composition suitable for medical purposes comprising a rubbery elastomeric base and two or more water soluble or water swellable hydrocolloids, said adhesive composition comprising a substantially homogeneous mixture of 15-60 % of one or more rubbery components, 10-60 % of a mixture of hydrocolloids comprising one or more hydrocolloids selected from the group of amidated pectins and potato starch, 0-50 % of one or more tackifier resins, 0-15 % cohesive strengthening agent, 0-10 % of a plasticizer and 0-5 % pigment, shows at least as good properties with respect to resistance to biological fluids as well as adhesion to the skin and coherence as state of the art adhesives comprising gelatine.

L'invention concerne une composition adhésive autocollante utilisée à des fins médicales comprenant une base élastomère caoutchouteuse et deux ou plusieurs hydrocolloïdes hydrosolubles ou gonflables à l'eau. Cette composition adhésive comprenant un mélange pratiquement homogène entre 15 et 60 % d'un ou plusieurs composants caoutchouteux, entre 10 et 60 % d'un mélange d'hydrocolloïdes renfermant un ou plusieurs hydrocolloïdes sélectionnés dans le groupe d'amidopectines et dans une fécule de pomme de terre, entre 0 et 50 % d'une ou plusieurs résines gluantes, entre 0 et 15 % d'un agent de renforcement cohésif, entre 0 et 10 % d'un plastifiant et entre 0 et 5 % d'un pigment. Cette composition fait preuve d'une bonne résistance aux liquides biologiques ainsi que d'une bonne adhérence à la peau et d'une cohérence, notamment pour les adhésifs commercialisés comprenant de la gélatine.

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