Agent for salting out active principles in dressings containing at least one of fatty substance
AssigneeUrgo Recherche Innovation Et Developpement
InventorChristelle Laurensou
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Abstract
The present invention relates to the use, as an agent for salting out an active substance in a composition for a dressing, of a copolymer of a salt of 2-methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulphonic acid and the 2-hydroxyethyl ester of propenoic acid. It also relates to dressings of the type comprising at least one fatty substance and/or an elastomeric matrix and at least one active substance, which incorporate the aforementioned copolymer.
Claims23
A dressing comprising a mass, wherein the mass comprises a hydrocolloid in an amount of between 2 and 20% by weight of the mass, at least one selected from the group consisting of a fatty substance and an elastomeric matrix, at least one active substance, and a copolymer of a salt of 2-methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid and of 2-hydroxyethylpropenoate ester,
- wherein the copolymer is included in an amount sufficient for increasing an amount of the active substance that is released from the dressing as compared to that of a corresponding dressing that does not comprise the copolymer,
- wherein the amount of the copolymer included in the dressing is between 1% to 20% by weight, and
- wherein the amount of the active substance included in the dressing is between 0.01% and 15% by weight.
A method for releasing an active substance from a dressing composition that comprises a mass, wherein the mass comprises a hydrocolloid in an amount of between 2 and 20% by weight of the mass and, at least one selected from the group consisting of a fatty substance and an elastomeric matrix and at least one active substance, the method comprising incorporating a copolymer of a salt of 2-methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid and of 2-hydroxyethylpropenoate ester in said dressing composition in an amount sufficient for increasing an amount of the active substance that is released from the dressing as compared to that of a corresponding dressing that does not comprise the copolymer,
- wherein the amount of the copolymer incorporated in the dressing is between 1% to 20% by weight, and
- wherein the amount of the active substance included in the dressing is between 0.01% and 15% by weight.
Dependencies are inferred from the claim text.