Water dispersible granulates comprising an active hydrophobic substance
US6465414B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2000 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Oct 30, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L89/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention concerns water dispersible granulates comprising at least a hydrophobic organic active substance (MA) solid or with melting point less than 100° C., in the form of particles, finely divided inside and encapsulated by a solid matrix and a water soluble or water dispersible polypeptide (PP) synthetic or of plant origin and at least an ionic or amphoteric dispersing agent (D) at the active substance/matrix interface. The invention also concerns the method for preparing said granulates in two steps, the first step consisting in preparing a dispersion in water comprising at least a hydrophobic active substance, at least an ionic or amphoteric dispersing agent (D) and at least a water soluble or water dispersible polypeptide (PP) synthetic or of plant origin, and the second step consisting in drying the dispersion until a granulate is formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.