Surfactant mixtures
US5164120A · kind A · utility
18Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1991 |
| Grant date | Nov 17, 1992 |
| Priority date | — |
| Expiry date | Nov 7, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/07
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Surfactant mixtures which have foamability performance and/or cost advantages over the individual components consist of 5-85% by weight of an amine oxide corresponding to the formula RR'R"NO in which R is a primary alkyl group containing 6-24 carbons and R' and R" are independently selected from methyl, ethyl, and 2-hydroxyethyl and 95-15% by weight of an alkylamidopropyldimethylbetaine in which the alkyl group contains 8-18 carbons. Preferred mixtures are those in which the amine oxide is N-tetradecyldimethylamine oxide and the betaine is cocoamidopropyldimethylbetaine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.