Agrochemical compositions comprising alkylenediol-modified polysiloxanes

An alkylene glycol, agrochemical technology, applied in the field of agrochemical compositions, can solve the problems of harmful application, no description of the beneficial effects of foam control agents on pesticide compositions, difficulty in foam control, and the like

Inactive Publication Date: 2009-02-25
TH GOLDSCHMIDT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Another common disadvantage of trisiloxane alkoxide surfactants is the difficulty in controlling the foam generated by the application of these products, which is particularly detrimental for use in tank mixes
However, the beneficial effect of foam control agents on the efficacy of pesticide compositions is not described

Method used

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  • Agrochemical compositions comprising alkylenediol-modified polysiloxanes
  • Agrochemical compositions comprising alkylenediol-modified polysiloxanes
  • Agrochemical compositions comprising alkylenediol-modified polysiloxanes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0158] Example 1 - Enhanced efficacy of fungicides obtained by alkylene glycol modified polysiloxane surfactants

[0159] Field trials were carried out in winter wheat, wherein ADS-1 and ADS-2 were mixed with 0.75 l / ha of fungicides (Opus Top from BASF, which contained 84 g / l epoxiconazole and 250 g / l Fenprofur as active substance) was sprayed in a tank mix of 300 l / ha of water. The mixture was sprayed onto the crops with nozzles at wheat growth stage 32-33 and again at growth stage 51-55. 0.25 l / ha of Break-Thru S233 (a non-spreading commercial trisiloxane surfactant manufactured by Goldschmidt) was used as an auxiliary internal standard for comparison. Several assessments were carried out on the diseased leaf area on different days after application. The main disease in this trial was leaf blight (Septoria tritici), which was assessed as % infected leaf area in leaves F-3, F-1 and F. For the grain filling period of wheat, and thus for yield, it is important to protect lea...

Embodiment 2

[0164] Example 2: Enhanced efficacy of fungicides obtained by alkylene glycol modified polysiloxane surfactants

[0165] In order to study the effect of ADS on Amistar (SC, 250g / l azoxystrobin) in controlling powdery mildew in barley, a greenhouse experiment was carried out at University of Giessen, Germany. Barley cv "Ingrid" (3 plants / pot) were grown in "Frustosoil" for three weeks. The plants were sprayed with 250 l / ha of a spray solution containing Amistar (250 g / l SC azoxystrobin) or / and 50 ml / ha of the adjuvant as indicated in the results of the table (see table of results). Two days after application, 8 cm long leaves were clipped from the plants and placed on benzimidazole agar (0.5% agar to which 40 ppm benzimidazole was added after sterilization). The leaves were then inoculated with fresh conidia of Blumeria graminis f. sp. hordei (species A6) using an inoculation tower. Powdery mildew was assessed by estimating the percentage of diseased leaf area after 7 and 14 ...

Embodiment 3

[0169] Example 3 - Hydrolytic stability at extreme pH values

[0170] Hydrolytic stability was determined in 0.1% buffer solution (pH3: 0.1M C 6 h 8 o 7 / NaOH / NaCl, pH 11: 0.1M boric acid / KCl / NaOH).

[0171] Stability was measured by measuring the dynamic surface tension of the solution using a tensiometer model 'SITA pro line f10' at 0.1 Hz and a foam life of 5000 ms. Hydrolysis of siloxanes leads to less surface active fragments and thus increases surface tension.

[0172] Table 3: Changes in dynamic surface tension (at different pH values, in mN / m)

[0173]

[0174]

[0175] These results demonstrate that trisiloxane ethoxylate surfactants begin to degrade almost immediately (indicated by increasing surface tension) at extreme pH values, whereas alkylene glycol derived surfactants are stable and unchanged.

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Abstract

Described are agrochemical compositions which comprise of one or more one agrochemical active ingredient(s) and alkylenediol -modified polysiloxanes of the general formula (I), wherein R<1> are alkyl radicals having 1 to 4 carbon atoms or aryl radicals, wherein at least 80% of the radicals R<1> are methyl radicals, R<2> in the molecule are identical or different and can have the following definitions (a), in which R<3> is a hydrogen or alkyl radical, R<4> is a hydrogen, alkyl or carboxyl radical, c is a number from 1 to 20, d is a number from 0 to 50, e is a number from 0 to 50 or b) correspond to the radical R<1>, with the proviso that in the average molecule at least one radical R<2> has the definition (a), a is a number from 1 to 200; b is a number from 0 to 10; and optionally one or more other agrochemically acceptable ingredients. The agrochemical compositions of the invention have enhanced efficacy, enhanced hydrolytic stability and / or decreased foaming properties.

Description

[0001] Merge as a reference [0002] Any prior application, and all documents cited therein or during the prosecution of its application (“Application Citations”) and all documents cited or referenced in Application Citations, and all documents cited or referenced herein (“Herein Cited Documents"), and all documents cited or referenced in documents cited herein, as well as any manufacturer's teachings, instructions, product brochures, and any product references mentioned herein or in any document incorporated herein by reference together with the product list of , are hereby incorporated by reference and may be used in the practice of the present invention. [0003] Citation or identification of any document in this application is not an admission that such document is available as prior art to the present invention. technical field [0004] The present invention relates to agrochemical compositions comprising an active agrochemical ingredient, at least one polysiloxane alky...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/30A01N57/20A01N59/14A01N53/00A01N47/36A01N43/84A01N43/653A01N43/54C05G3/06A01P3/00A01P7/00A01P13/00C05G3/70
CPCC05G3/02A01N25/10A01N25/30C05G3/60A01N43/54A01N43/653A01N43/84A01N47/36A01N53/00A01N57/20A01N59/14
Inventor J·西姆帕尔凯姆普S·西尔伯I·弗鲁特-施拉赫特尔F·柯尼希E·西弗尔丁D·林赛
Owner TH GOLDSCHMIDT AG
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