Lipid based composition containing diacylglycerol, phospholipid, polar liquid and biologically active material
US5807573A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1996 |
| Grant date | Sep 15, 1998 |
| Priority date | — |
| Expiry date | Nov 27, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P31/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A biologically active composition containing (a) a diacyl glycerol, (b) a phospholipid and, optionally, (c) a polar liquid in such proportions that they together form an L2-phase or a cubic liquid crystalline phase, in which a biologically active material is dissolved or dispersed. A method for preparing the composition by mixing (a), (b) and, optionally, (c) for forming an L2-phase or a cubic liquid crystalline phase, the biologically active material being added before, during or after the formation of said phase. Use of the L2-phase or the cubic liquid crystalline phase for encapsulating a biologically active material for obtaining a preparation is provided, which yields a controlled release of the biologically active material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.