Sunscreen compositions comprising a mixture of titanium and/or zinc oxide particles, method of preparing the same and use thereof
US5939054A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1997 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Sep 15, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/59
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A sunscreen composition containing a synergic mixture of titanium and/or zinc oxide particles, characterized in that said particles are incorporated in paste-forming oils and/or esters and/or fatty alcohols and/or ethers selected so as to provide a wetting point of the incorporated titanium oxide particles and of the incorporated zinc oxide particles lower than about 5 and a flow point of said incorporatedparticles lower than about 30. The invention also provides a method for preparing said composition and the use thereof for protecting the skin against ultraviolet radiation and for maintaining the monocrystalline dispersion of minerals in the formulation and on the skin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.