Controlled release encapsulation
US7235261B2 · kind B2 · utility
65Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2002 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Jun 27, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q15/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
This invention relates to a controlled release encapsulated dry powder that is formed by an emulsion comprising: A) a fully hydrolyzed polymer, B) a hydrophobic silica, C) a modified corn starch, and D) at least one fragrance oil, which is emulsified in water and spray dried to evaporate the water obtaining the encapsulated dry powder. This invention also relates to a process for the preparation of a controlled release encapsulated dry powder that is formed by an emulsion, which is spray dried. The controlled release encapsulated dry powder is used in deodorant and antiperspirant applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.