Process for preparing microcapsules in a liquid vehicle
US4460563A · kind A · utility
141Cited by
13References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 2, 1981 |
| Grant date | Jul 17, 1984 |
| Priority date | — |
| Expiry date | Apr 2, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2989
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a process for preparing microcapsules in a liquid vehicle, allowing to microencapsulate both water soluble and water insoluble substances, using either ionic or non-ionic systems, in which the membrane enclosing the core of the microcapsules is formed by a polymer selected from the group of the phthalates, and more particularly by hydroxypropylmethylcellulose phthalate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.