Coprocessed microcrystalline cellulose and calcium carbonate composition and its preparation
US4744987A · kind A · utility
143Cited by
18References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1987 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Aug 3, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/2009
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A particulate coprocessed microcrystalline cellulose and calcium carbonate composition having the respective components present in a weight ratio of from about 75:25 to 35:65. The composition is useful as a pharmaceutical excipient. The coprocessed composition is prepared by forming a well-dispersed aqueous slurry of microcrystalline cellulose and calcium carbonate and then drying the slurry, preferably by spray drying, to yield a particulate product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.