INVERSE LATICES SELF-INVERTIBLE WITH RESPECT TO WHITE MINERAL OILS, SQUALANE, HYDROGENATED POLYISOBUTENE, ISOHEXADECANE OR ISODODECANE AND COSMETIC, DEMOCOSMETIC, DERMOPHARMACEUTICAL OR PHARMACEUTICAL COMPOSITIONS COMPRISING THEM
US6673861B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 7, 2001 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Jan 31, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q19/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Composition comprising an oil phase, an aqueous phase, at least one emulsifying agent of water-in-oil (W/O) type and at least one emulsifying agent of oil-in-water (O/W) type in the form of a self-invertible inverse latex comprising from 20% to 70% by weight, and preferably from 25% to 50% by weight of a branched or crosslinked polyelectrolyte, characterized in that the said polyelectrolyte is either a homopolymer based on a monomer having a partially or completely salified strong acid functional group or a copolymer based on at least one monomer having a partially or completely salified strong acid functional group copolymerized with acrylamide and characterized in that the constituent solvent of the oil phase is chosen from white mineral oils, squalane, hydrogenated polyisobutene, isohexadecane or isododecane. Cosmetic, dermocosmetic, dermopharmaceutical or pharmaceutical composition comprising them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.