Process for the compaction of a powder mixture providing an absorbent or partially friable compact product and the product obtained by this process
US5211892A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 1991 |
| Grant date | May 18, 1993 |
| Priority date | — |
| Expiry date | Jul 19, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/718
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A new process for manufacturing pharmaceutical or cosmetic compacted powders providing an absorbent or partially friable compacted product, in which a quantity of powder mixture is placed at the bottom of a chamber in which a piston is made to slide in order to exert a compaction pressure on the powder mixture, wherein the powder mixture contains from 5 to 80% by weight of at least one thermoplastic product having a particle size of between 5 and 500 .mu., the remainder being composed of at least one non-thermoplastic product containing from 0.5 to 20% by weight of a binder and, that, whilst pressure is being applied, the powder mixture is subjected to ultrasonic force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.