Surfactant products of poly(hydroxyalkanecarboxylic acid) phosphate esters
US5300255A · kind A · utility
17Cited by
12References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1987 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Jul 6, 2007 |
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.