Defoamer for liquid wetting agents and low-foam liquid plant protection agents
AssigneeHoechst Aktiengesellschaft
InventorsKonrad Albrecht, Jean Kocur
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Abstract
The invention relates to defoamed aqueous solutions of surfactants and to low-foam concentrated liquid preparations of plant protection agents, which contain sulfato- or sulfonato-containing surfactants as wetting agents and surfactants from the group comprising the perfluoro(C.sub.6 -C.sub.18)alkylphosphinic acids and/or -alkylphosphonic acids and/or their salts, as defoamer.
Claims17
An aqueous preparation which contains an anionic wetting agent selected from the group consisting of the sulfato- or sulfonato-containing surfactants (wetting agents) in combination with a surfactant (defoamer) selected from the group consisting of salts of perfluoro(C.sub.6 -C.sub.18)alkylphosphinic or -phosphonic acids with C.sub.1 -C.sub.18 -alkylamines, C.sub.1 -C.sub.18 -alkylamino-oxyethylates or ethylene diamine ethoxylates or mixtures of the defoamers.
An aqueous liquid herbicidal preparation comprising:
- a) a herbicidally active substance;
- b) an anionic wetting agent selected from the group consisting of the sulfato- or sulfonato-containing surfactants;
- c) a defoamer which is a surfactant selected from the group consisting of salts of perfluoro(C.sub.6 -C.sub.18)alkylphosphinic or -phosphonic acids with C.sub.1 -C.sub.18 -alkylamines, C.sub.1 -C.sub.18 -alkylamino-oxethylates or ethylene diamine ethoxylates or mixtures of the defoamers;
- and
- d) water.
An aqueous liquid herbicidal preparation comprising:
- a) glufosinate-ammonium;
- b) sodium (C.sub.12 -C.sub.16) alcohol polyglycol ether sulfate;
- c) a surfactant (defoamer) selected from the group consisting of salts of perfluoro(C.sub.6 -C.sub.18)alkylphosphinic or -phosphonic acids with C.sub.1 -C.sub.18 -alkylamines, C.sub.1 -C.sub.18 -alkylamino-oxyethylates or ethylene diamine ethoxylates or mixtures of the defoamers;
- and
- d) water.
Dependencies are inferred from the claim text.