Inverse latex based on squalane or hydrogenated polyisobutene and cosmetic compositions, dermocosmetics, dermopharmaceuticals or pharmaceutical compositions containing them

摘要

Composition comprising oil and aqueous phase, at least one water/oil emulsifier and at least one oil/water emulsifier, in form of auto-invertible inverse latex comprising 20-70 (preferably 25-50) wt.% of branched or crosslinked polyelectrolyte, and containing solvent component of oil phase in form of squalane, hydrogenated polyisobutene, white mineral oils, isohexadecane or isododecane, is new. In the composition, the solvent component of oil phase is selected either (a) from squalane or hydrogenated polyisobutene, in which case polyelectrolyte is either a homopolymer based on monomer having strong acid group partially or totally salt-converted, or a copolymer based on at least one monomer as above copolymerized with acrylamide; with crosslinking and/or branching agent selected from diallyl-oxyacetic acid or one of its salts, e.g. Na salt, ethylene glycol dimethacrylate or diacrylate, diallyl urea, trimethylol propane triacrylate, methylene bis (acrylamide) and triallyl amine; or (b) from white mineral oils, isohexadecane or isododecane, in which case polyelectrolyte is a copolymer based on at least one monomer with partially or totally salt-converted strong acid group, copolymerized with acrylamide, with crosslinking and/or branching agent being triallyl amine. Independent claims are also included for: (1) cosmetic, dermo-cosmetic, dermo-pharmaceutical, or pharmaceutical preparation, in form of milk, lotion, gel, cream, soap, bath foam, balm, shampoo or conditioner, including 0.1-10 wt.% of composition as claimed; and (2) use of composition as claimed in production of cosmetic, dermo-cosmetic, dermo-pharmaceutical, or pharmaceutical preparations.