Surfactant/solvent systems
US6627595B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2000 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Dec 21, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01N47/22
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to surfactant/solvent systems for liquid formulations comprising&agr;) one or more nonaromatic-based surfactants,&bgr;) as solvent, one or more triester(s) of phosphoric acid with alcohols, preferably from the group consisting of1 ) monohydric alkanols having 5 to 22 carbon atoms, for example with n-, i- or neo-pentanol, n-hexanol, n-octanol, 2-ethylhexanol,2) diols or polyols, such as ethylene glycol, propylene glycol or glycerol,3) aryl, alkylaryl, poly(alkyl)aryl and poly(arylalkyl)aryl alcohols, for example with phenol and/or cresol, octylphenol, nonylphenol, triisobutylphenol, tristyrylphenol,4) alkoxylated alcohols obtained by reacting the alcohols mentioned above under 1), 2) or 3) with alkylene oxides, preferably (C1-C4)alkylene oxides, and5) alkoxylated alcohols obtained by reacting monohydric alkanols having 1 to 4 carbon atoms and alkylene oxides.The surfactant/solvent system according to the invention is suitable for the preparation of liquid active substance formulations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.