Clump-free liquid dispersible powder compositions and process for making the same
US6361799B1 · kind B1 · utility
8Cited by
7References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 18, 2000 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Oct 18, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/145
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A powder composition which is readily dispersible in a liquid such as water without clumping, comprises a powder the particles of which are uniformly coated with an effective amount of a surfactant, preferably Polysorbate-80, sufficient to enable the powder composition to readily disperse in the liquid. A process for making the powder composition that disperses readily in a liquid without clumping, comprises the step of continuously mixing a powder with an amount of a surfactant for a time sufficient to uniformly coat at least substantially all of the particles of the powder with the surfactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.