Moisture-proof mascara composition
US7537753B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2003 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Sep 24, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q1/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a moisture-resistant mascara composition with increased moisture and wear resistance. The mascara composition contains a complex, comprising 0.1 to 10 wt. % of a water-soluble polymer, selected from polyvinylpyrrolidone, vinyl acetate/vinyl pyrrolidone copolymers and mixtures thereof, 0.5 to 10 wt. % stearic acid and 1 to 40 wt. % of a wax or a wax mixture, whereby the complex exists as an oil phase emulsified in an aqueous phase and is produced by addition of the water-soluble polymer or copolymer to the oil phase, consisting of the molten wax or wax mixture and stearic acid, to form a stable colloidal complex and said complex is emulsified to give a homogeneous form with an aqueous phase. The complex, in which the water-soluble polymer is contained in the oil phase leads to mascaras with an exceptional plasticity and moisture resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.