Microcapsules containing an oxidizable active, and a process for preparing the same
US10111857B2 · kind B2 · utility
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7References
16Claims
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Assignee
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Key dates
| Filing date | Mar 8, 2016 |
| Grant date | Oct 30, 2018 |
| Priority date | — |
| Expiry date | Mar 8, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D1/22
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Disclosed is a microcapsule including a core having an oxidizable active (OA), the outer part of said core being in a solid form, and a water insoluble coating obtained from an encapsulating agent (EA), with the coating surrounding said core. In particular, the EA can be water soluble or organic solvent soluble, in particular in ethanol. The microcapsule can also include an EA in which the water solubility is pH-dependent. Also, the core does not contain a metal oxide, and the coating does not include a disintegrant, such as sodium starch glycolate. Also disclosed is a process for preparing the microcapsules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.