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Pymetrozine formulations

A substance and polymer technology, applied in animal repellents, plant growth regulators, botanical equipment and methods, etc., can solve the problems of dust pollution, dusty, difficult to prepare and store suspension concentrate formulations, etc.

Inactive Publication Date: 2016-08-03
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, wettable powders have serious drawbacks: they can be rather dusty and can cause dust contamination and an acute inhalation hazard to the operator (especially problematic is the carcinogenic potential of pymetrozine)
However, it can be difficult to prepare storage-stable suspension concentrate formulations, especially for active ingredients with high water solubility such as pymetrozine, e.g. with regard to thickening and particle agglomeration

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example

[0084] The following examples are provided to illustrate embodiments of the invention and are not intended to be limitations on the scope of the embodiments of the invention, which is defined in the appended claims.

[0085] according to figure 1 Three pymetrozine concentrate formulations were prepared as described above. Table 2 provides the compositions of Example 1, Example 2 and Example 3.

[0086] Table 2

[0087] Element

Example 1

Example 2

Example 3

Pymetrozine Powder

25％

25％

16％

Etoproxil

5％

Sodium dodecyl benzene sulfonate

2％

2％

2％

Second polymer dispersant

6％

8％

6％

first polymer dispersant

2％

1％

2％

Silicone defoamer (DK1247)

0.1％

0.1％

0.1％

Xanthan Gum (2%)

5％

5％

5％

Propylene Glycol

5％

5％

5％

antimicrobial agent

0.1％

0.1％

0.1％

water

Add to 100%

Add to 100%...

example 2

[0093] The prepared samples clumped after heated storage at 54°C for 14 days, indicating that the mixing ratio of the first polymeric dispersant to the second polymeric dispersant may be important for the fluidity of the formulation after storage.

[0094] Table 4 - Example 3

[0095]

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PUM

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Abstract

The invention discloses pymetrozine formulations. The present disclosure relates generally to insecticide formulations. The present disclosure relates more particularly to aqueous pymetrozine formulations that can be provided in concentrate form and methods for making them. In one aspect, the disclosure provides a composition including pymetrozine in particulate form; a first polymeric dispersing agent, the first polymeric dispersing agent being a copolymer of (a) a maleic acid monomer and (b) a hydrophobic monomer; and a second polymeric dispersing agent, the second polymeric dispersing agent being a copolymer of (a) a (meth)acrylic acid monomer, an ethylenically unsaturated dicarboxylic acid monomer or a combination thereof, (b) a (meth)acrylamido alkyl or aryl sulfonate monomer; and (c) a third monomer selected from one or more of vinylic compounds, (meth)acrylic esters, vinyl acetate, and substituted (meth)acrylamides.

Description

technical field [0001] The present disclosure generally relates to pesticide formulations. The present disclosure relates more particularly to aqueous pymetrozine formulations, which may be provided in concentrate form, and methods for their manufacture. Background technique [0002] Pymetrozine is an azomethine insecticide commonly used in integrated crop management to control aphids, whiteflies, and other pests. Pymetrozine is plant systemic, being readily absorbed by leaves and roots and transported throughout the plant body. Plants were protected immediately after pymetrozine application because insects stopped feeding shortly after ingesting pymetrozine. Although pymetrozine is generally considered safe for use on food crops, there is evidence of carcinogenic effects at high doses. [0003] A customary formulation of pymetrozine is the so-called "wettable powder", in which pymetrozine is provided as a finely ground powder in combination with wetting agents and someti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N43/707C08L35/00C08L33/02
CPCA01N43/707C08L35/00A01N31/14A01N25/04A01N25/30C08L33/26
Inventor J·纪L·钟J·穆
Owner DOW GLOBAL TECH LLC
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