Silicone modified phospholipid compositions
US5849313A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1997 |
| Grant date | Dec 15, 1998 |
| Priority date | — |
| Expiry date | Apr 7, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A silicone-containing phospholipid having the general formula: ##STR1## wherein: A is selected from H, M or R.sub.9 --Y--; PA0 A.sub.1 is selected from H, OH, OM or R.sub.9 --Y--O--; PA0 M is a cation; PA0 Y is alkylene; PA0 x is 0 or an integer from 1-5; and PA0 R.sub.9 is a mixture of a organosilicone carboxyl functional moiety of the formula: ##STR2## wherein: R.sub.10 is the silicone backbone chain to which at least one pyrrolidone containing carboxyl functional group is attached; PA0 F is linear or branched alkylene of 1-12 carbon atoms; PA0 X.sup.- is an anion; PA0 n is 0 or 2; PA0 n.sup.1 is 0 or 1; PA0 n.sup.2 is 0 or 1; PA0 B is --NR.sub.11 sulfur or oxygen, wherein R11 hydrogen or lower alkyl (C.sub.1-6); and PA0 d is one or greater; PA0 an organic amidoamine moiety and/or an organic tertiary amine moiety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.