Surfactant/solvent systems
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United States of America Patent
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Sep 30, 2003
Grant Date -
Jan 17, 2002
app pub date -
Dec 21, 2000
filing date -
Dec 28, 1999
priority date (Note) -
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Abstract
The present invention relates to surfactant/solvent systems for liquid formulations comprising .alpha.) one or more nonaromatic-based surfactants, .beta.) as solvent, one or more triester(s) of phosphoric acid with alcohols, preferably from the group consisting of 1 ) 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 (C.sub.1 -C.sub.4)alkylene oxides, and 5) 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.
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