Particulate composition comprising a core of matrix polymer with active ingredient distributed therein
US5460817A · kind A · utility
91Cited by
17References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1993 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Mar 12, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J13/125
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A particulate composition comprises particles having a substantially anhydrous core comprising an active ingredient. Generally the core comprises a matrix polymer with the active ingredient distributed throughout this. Generally there is an outer protection shell of polymer, generally formed by coacervation. The invention is a value for the production of powders, dispersions in non-aqueous liquids (for instance when the active ingredient is a detergent enzyme) and dispersions in water (for instance when the active ingredient is an agrochemical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.