Detergent compositions containing liposomes and process therefor
US5328628A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1992 |
| Grant date | Jul 12, 1994 |
| Priority date | — |
| Expiry date | Aug 26, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2984
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
This invention relates to a method of stabilizing liposomes contained in aqueous compositions against lysis by anionic surfactants otherwise known to disrupt and lyse such liposomes by using certain surfactants as stabilizing agents and to the stabilized compositions obtained thereby as well as to a method of making detergent compositions containing such stabilized liposomes and anionic surfactants as well as to the compositions themselves. The compositions can be used as shower gels and shampoos. The liposomes are preferably vesicles derived from natural phospholipids or from synthetic nonionic amphiphilic compounds which are sometimes referred to as "niosomes" and may contain water soluble humectants or vitamins. From about 0.1% to 40%, and more preferably, from 2% to 10%, by weight of at least one surfactant such as fatty alkyl sulfosuccinates (fatty alkyl group contains from 8 to 22 carbons atoms), fatty acylamino polyglycol ether sulfates (fatty acyl group contains from 8 to 22 carbon atoms), fatty alkyl amine oxides (fatty alkyl group contains from 7 to 26 carbon atoms), fatty alkyl phosphate esters (fatty alkyl group contains from 8 to 22 carbon atoms), and N-acyl amino acid…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.