Patent ID: 11938204
Assignee: CAPSUM
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 15:
16. A composition in the form of an oil-in-water emulsion, comprising a continuous aqueous phase and a dispersed oil phase in the form of drops (G1) and (G2),
wherein the drops (G1) comprise an oil phase and a shell formed of at least one anionic polymer (PA1) and at least one cationic polymer (PC1), wherein the size of the drops (G1) is less than 500 μm,
wherein the drops (G2) comprise an oil phase and a shell, said shell being formed of at least one anionic polymer (PA2), identical to or different from (PA1), and at least one cationic polymer (PC2), identical or different from (PC1), wherein the size of the drops (G2) is greater than 500 μm, and
wherein the drops (G1) and (G2) are different in nature, in regard to the nature of the anionic and cationic polymers, or oils and/or additional compounds and/or active agents,
wherein the anionic polymers (PA1) and (PA2) are hydrophilic, and the cationic polymers (PC1) and (PC2) are lipophilic or liposoluble,
wherein the anionic polymer (PA1) is selected from the group consisting of carbomers and copolymers of acrylic acid or maleic acid and other monomers, said other monomers being selected from the group consisting of: acrylamide, alkyl acrylates, C5-C8 alkyl acrylates, C10-C30 alkyl acrylates, C12-C22 alkyl methacrylates, methoxy-polyethylene glycol methacrylates, hydroxyester acrylates, crosspolymer acrylates, and mixtures thereof, and
the composition does not include a surfactant.