Antiperspirant materials and compositions
US5593663A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1994 |
| Grant date | Jan 14, 1997 |
| Priority date | — |
| Expiry date | Nov 14, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/1274
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Novel antiperspirant actives are amphiphilic materials which form, upon contact with perspiration, a water-insoluble liquid crystal phase of greater than one-dimensional periodicity, e.g. a cubic (three-dimensional periodicity) or hexagonal (two-dimensional periodicity) liquid crystal structure. Examples of such actives include lipids, surfactants, emulsifiers, polymer amphiphilic complexes and block copolymer surfactants which form the required liquid crystal phase upon contact with sweat. Preferably, antiperspirant compositions comprising the novel active(s) are free of conventional antiperspirant actives, especially aluminum and/or zirconium salts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.