Process for the preparation of a pulverulent composition and product as obtained
US9101897B2 · kind B2 · utility
1Cited by
6References
19Claims
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Key dates
| Filing date | Mar 16, 2007 |
| Grant date | Aug 11, 2015 |
| Priority date | — |
| Expiry date | Aug 23, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H3/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Method of preparing a non-hygroscopic pulverulent composition, includes a step for the spray drying, without an atomization support, of an aqueous solution containing at least one initially hygroscopic product, having a glass transition temperature ranging from 10° C. to 110° C., and a cryogenic fluid, especially a food-grade cryogenic fluid, or a mixture of cryogenic fluids, particularly chosen from liquid air, nitrogen and carbon dioxide, the aqueous solution being obtained by dissolving the cryogenic fluid in an initial aqueous solution containing the initially hygroscopic product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.