Preservative mixtures
US5352693A · kind A · utility
4Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 25, 1992 |
| Grant date | Oct 4, 1994 |
| Priority date | — |
| Expiry date | Sep 25, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q17/005
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A solid composition comprising a dispersion of at least one alkyl ester of p-hydroxybenzoic acid in a hydroxymethyl-substituted dimethylhydantoin, its method of preparation, and its use as a preservative in shampoos, lotions, and cosmetics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.