Process for producing W/O/W type multiple emulsion for medicines
US4988456A · kind A · utility
16Cited by
10References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1989 |
| Grant date | Jan 29, 1991 |
| Priority date | — |
| Expiry date | Jul 10, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/925
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a process for producing a W/O/W type multiple emulsion using a polyglycerol polyricinolate (i.e. a polyglycerol ester of a polycondensed fatty acid of caster oil). The use of the polyglycerol polyricinolate is effective in increasing the rate of formation of the W/O/W type multiple emulsion remarkably and giving a W/O/W type multiple emulsion which is stable over a long period of time. The W/O/W type multiple emulsion has also an excellent heat stability and is useful for the production of medicines and cosmetics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.