Surfactant and dispersible or emulsifiable compositions employing surfactant
US5536445A · kind A · utility
18Cited by
10References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1993 |
| Grant date | Jul 16, 1996 |
| Priority date | — |
| Expiry date | Dec 14, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/912
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A surfactant comprising a carboxylic acid ester or amide carrying a terminal strong acid group selected from carboxymethyl, sulphate, sulphonate, phosphate and phosphonate, suitable for stabilising dispersions of solids in organic liquids and oil/water emulsions, processes for the preparation of the surfactant and dispersions and emulsions containing the surfactant. A preferred species of the surfactant is a poly(hydroxyalkanecarboxylic acid) having the strong acid group attached, either directly or through a linking group, to a terminal hydroxy or carboxylic acid group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.