Cosmetic compositions with agglomerated substrates
US6309627A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2000 |
| Grant date | Oct 30, 2001 |
| Priority date | — |
| Expiry date | Jan 31, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/43
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to cosmetic compositions containing agglomerates with particular particle sizes. The compositions are characterized in that they contain spherical non-porous SiO2 particles with a particle size of 0.05-1.5 .mu.m, and other inorganic particle-shaped materials with spherical structure. The spherical SiO.sub.2 and other inorganic materials form defined agglomerates with a particle size of 0.06 .mu.m to 5 .mu.m. The proportion of agglomerates in the cosmetic composition is between 0.1 and 30% wt. The aggregate-containing dispersions are produced by introducing the spherical SiO.sub.2 step by step and in special conditions. Formulations produced with these aggregates are characterized by particularly stable and high sunscreen factors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.