| 摘要 |
The use of a composition comprising an oil phase, an aqueous phase, at least one water-in-oil emulsifying agent and at least one oil-in-water emulsifying agent, in the from of inverse latex comprising an anionic polyelectrolyte (20-70, preferably 25-40, wt. %) for the preparation of cosmetic, dermopharmaceutical or pharmaceutical compositions is new. The use of a composition comprising an oil phase, an aqueous phase, at least one water-in-oil emulsifying agent and at least one oil-in-water emulsifying agent, in the from of inverse latex comprising an anionic polyelectrolyte (20-70, preferably 25-40, wt. %) for the preparation of cosmetic, dermopharmaceutical or pharmaceutical compositions is new. The anionic polyelectrolyte comprises acrylic acid units partially neutralized and optionally branched and/or reticulated. Independent claims are also included for: (1) a composition comprising an oil phase, an aqueous phase, at least one water-in-oil emulsifying agent and at least one oil-in-water emulsifying agent, in the from of inverse latex comprising a reticulated anionic polyelectrolyte (20-70, preferably 25-40, wt. %), the reticulating agent being a compound containing at least two allyl radicals such as diallyloxy acetic acid, sodium diallyloxy acetate or tri allylamine; (2) the preparation of the composition comprising: (a) emulsifying an aqueous solution containing monomers and optionally additives in an oil phase in the presence of at least one water-in-oil emulsifying agent; (b) initiating a polymerization reaction in the emulsion by adding a free radical initiator and optionally a co-initiator; and (c) adding at least one oil-in-water emulsifying agent at less than 50 deg C, after the polymerization reaction finished, and optionally after concentration of the mixture; and (3) the preparation of a cosmetic, dermopharmaceutical or pharmaceutical comprising the above described composition (0.1-10 wt. %).
|
