Microcapsules having a combined atelocollagen/polyholoside wall coagulated by a divalent cation and method for manufacturing these microcapsules and cosmetic or pharmaceutical or food compositions containing them
US5525359A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1993 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Feb 9, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2984
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to microcapsules having a combined atelocollagen/polyholoside coagulated wall as well as to a method for producing them. According to the invention, the microcapsules are characterized in that they include a combined atelocollagen/polyholoside wall coagulated by a coagulant, preferably a divalent cation. These microcapsules are preferably prepared by a method which includes laminar-flow extrusion dislocated by individual droplet vibrations falling into a coagulation bath. The presence of the atelocollagen renders the microcapsules biocompatible. They are particularly suitable for the production of cosmetic, pharmaceutical or food compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.