Method of preparing powdered, free-flowing tocopheryl succinate
US4870196A · kind A · utility
8Cited by
3References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1988 |
| Grant date | Sep 26, 1989 |
| Priority date | — |
| Expiry date | Feb 24, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P3/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method of preparing powdered, free-flowing tocopheryl succinate having a high bulk density comprising melting a mixture of tocopheryl succinate and wax, spraying the melt in a spraying zone containing a cloud of a powdering agent consisting of fine tocopheryl succinate and an additional powdering agent, and maintaining the product formed in a fluidized state by introducing cooling air until the tocopheryl succinate particles have hardened, and separating the product formed into a product fraction and a fine fraction, and recyclying the fine fraction to the spraying zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.