Aqueous flowable concentrate compositions of a microencapsulated dinitroaniline herbicide
AssigneeBASF SE
InventorsTerrance M. Cannan, Paul Ch. Kierkus
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Abstract
The present invention relates to aqueous flowable concentrate compositions of a microencapsulated dinitroanline herbicide, in particular pendimethalin, which are flowable and have improved storage stability. The compositions contain: i. 50 to 400 g/l of a dinitroaniline herbicide in the form of microcapsules comprising a core material containing the dinitroaniline herbicide, in particular pendimethalin, and a polymeric wall material, the microcapsules being dispersed in an aqueous phase; ii. 100 to 500 g/l of a glyphosate salt which is dissolved in the aqueous phase and iii. at least one anionic surface-active substance.
Claims21
A stable flowable aqueous concentrate composition containing
- i. about 100 to 400 g/l of pendimethalin in the form of microcapsules comprising a core material, which contains the pendimethalin, and a polymeric wall material, the microcapsules being dispersed in an aqueous phase;
- ii. 100 to 500 g/l of a glyphosate salt which is dissolved in the aqueous phase and
- iii. at least one anionic oligomer or polymer, wherein the anionic oligomer or polymer is selected from oxidized alkali-lignin, lignosulfonates, ligninsulfates, and the salts of arylsulfonic acid formaldehyde condensates and of arylsulfonic acid formaldehyde urea condensates and mixtures thereof.
A method for increasing the storage stability of a flowable, aqueous concentrate composition comprising dispersing microcapsules containing 50 to 400 g/l of microcapsules comprising
- i. about 100 to 400 g/l of pendimethalin in the form of microcapsules comprising a core material, which contains the pendimethalin, and a polymeric wall material, the microcapsules being dispersed in an aqueous phase;
- ii. 100 to 500 g/l of a glyphosate salt which is dissolved in the aqueous phase and
- iii. at least one anionic oligomer or polymer, wherein the anionic oligomer or polymer is selected from oxidized alkali-lignin, lignosulfonates, ligninsulfates, and the salts of arylsulfonic acid formaldehyde condensates and of arylsulfonic acid formaldehyde urea condensates and mixtures thereof.
Dependencies are inferred from the claim text.