Compositions comprising pH-sensitive microcapsules
US11166889B2 · kind B2 · utility
0Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2017 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Jun 29, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/412
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Disclosed herein is a composition comprising a pH-sensitive microcapsule comprising (1) a shell wall comprising at least one polymer chosen from cellulose derivatives and acrylate derivatives, and at least one structuring agent chosen from shellac, ethyl cellulose, and fumed silica, and (2) at least one functional ingredient encapsulated inside the shell wall; and a carrier having a pH of less than about 7. Further disclosed herein are methods of making a composition comprising a pH-sensitive microcapsule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.