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Spreading agent for agrochemicals, and agrochemical spray liquid

A spreading agent and pesticide technology, applied in application, biocide, insecticide, etc., can solve the problems of pesticide residues and initial adhesion, etc.

Active Publication Date: 2020-10-20
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when using the spreading agent composition described in Patent Document 3, since the film formed on the plant surface is insoluble in water, there is a problem that the pesticide components remain on the plant surface.
Therefore, there has not yet been obtained an agrochemical dispersion liquid that is excellent in initial adhesion to the plant surface and reduces the risk of residues such that the agrochemical component does not remain on the plant surface after a lapse of a certain period of time.

Method used

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  • Spreading agent for agrochemicals, and agrochemical spray liquid
  • Spreading agent for agrochemicals, and agrochemical spray liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] (PVA-1: Manufacture of carboxyl-modified PVA(A))

[0088] 1300 g of vinyl acetate, 500 g of methanol, and 11 mL of a 10% by mass methanol solution of itaconic acid were charged into a separable flask equipped with a reflux condenser, a stirrer, a thermometer, a nitrogen gas introduction tube, a feed port for a post-addition liquid, and a pump. While stirring the polymerization solution, replace the system with nitrogen, heat it with a constant temperature bath, and add 0.5 g of 2,2'-azobis(isobutyronitrile) (AIBN) when the constant temperature reaches 60°C to start polymerization . The solid content concentration of the polymerization system was analyzed from the start of the polymerization, and a 10% by mass methanol solution of itaconic acid was added dropwise to carry out polymerization. After 96.6 mL of a 10% by mass methanol solution of itaconic acid was dropped substantially uniformly from the start of the polymerization to 2.3 hours, 1000 g of methanol was added...

Embodiment 2~8

[0093] (Manufacture of PVA-2~PVA-7, preparation of pesticide dispersion liquid)

[0094] In addition to changing the amount of monomers having carboxyl groups, vinyl acetate, methanol, and polymerization initiators, polymerization temperature, polymerization time, and polymerization rate, and the concentration of PVAc solution during saponification and the amount of saponification catalyst as shown in Table 1, saponification Except for the temperature, various PVAs (PVA-2 to PVA-7) were produced in the same manner as in Example 1. Table 2 shows the physical properties of PVA-2 to PVA-7. Instead of PVA-1, PVA-2 to PVA-7 were used respectively, and the type and amount of the polyvalent metal ionic compound (B) were changed as shown in Table 2, except that it was performed in the same manner as in Example 1 to prepare Pesticide dispersion liquid. In addition, the polyvalent metal ionic compound (B) was added to the 1 mass % aqueous solution of various PVA prepared by the method...

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Abstract

The present invention provides: a spreading agent for agrochemicals, the spreading agent having particularly exceptional adhesion to plant surfaces; and an agrochemical spray liquid in which the riskthat residue of the spreading agent for agrochemicals will remain on the plant surfaces is reduced. The present invention pertains to a spreading agent for agrochemicals, the spreading agent containing a carboxy-group-modified vinyl alcohol polymer (A) in which the content amount of monomer units having carboxy groups is 0.1-10 mol%, the viscosity-average polymerization degree is 200-5000, and thesaponification degree is 65-99.9 mol%.

Description

technical field [0001] The present invention relates to an agrochemical spreading agent containing a carboxyl-modified vinyl alcohol polymer and particularly excellent in adhesion to plant surfaces, and an agrochemical spreading liquid in which the risk of the agrochemical spreading agent remaining on the plant surface is reduced. Background technique [0002] In the field of agriculture, a spray liquid obtained by diluting an agricultural chemical with water is generally used. However, if this spreading liquid is directly spread to the plant surface, the spreading liquid will not simply adhere due to the presence of water-repelling wax and filamentous substances on the surface of plants and pests, resulting in the pesticide active ingredients contained in the spreading liquid It is lost due to rainfall, etc., or peeled off due to wind, and the durability of the effect is often impaired. [0003] Therefore, for the purpose of improving the adherence, ie, adhesiveness, of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/24A01P7/04C08K3/105C08L29/04A01N57/28
CPCA01N25/24A01N57/28A01N25/06C08K2003/282C08K3/28C08F8/12C08F218/08C08F216/06C08K2003/166C08K3/16A01N57/14C08L29/04C08F220/14C08F222/02C08F222/16C08K3/105A01N37/36
Inventor 香春多江子森川圭介
Owner KURARAY CO LTD