Polymer-containing wettable powder

A wettable powder, polymer technology, applied in animal repellents, plant growth regulators, biocides, etc., can solve the problems of harming human health, environmental pollution, and high use costs, achieving low environmental pollution and high prevention and control efficiency. , spray uniform effect

Inactive Publication Date: 2013-10-02
GUANGDONG ZHONGXUN AGRI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of environmental pollution, harm to human health and high cost of use in the prior art to develop a high-content, environmentally friendly, high utilization rate, and easy-to-use wettable powder

Method used

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  • Polymer-containing wettable powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: 75% chlorothalonil wettable powder.

[0018] Weigh 75% of chlorothalonil original powder, 2% of wetting agent sodium lauryl sulfate, 3% of dispersing agent polycarboxylate 2700, 2% of sodium lignosulfonate, 2% of PVA, 2% of blue powder, and filler kaolin to 100%, after mixing it evenly, it was pulverized by a jet mill to obtain 75% chlorothalonil wettable powder. After inspection, the active ingredient content is 75.5%, moisture ≤ 2.0%, pH value 8.7, sieving (through 15μm sieve) ≥ 98%, suspension rate ≥ 98%, persistent foaming (1min) ≤ 10mL, wettability ≤ 1min , Accelerated heat storage stability is qualified. It is used to prevent and control apple spot defoliation, and has a good preventive effect, with a control effect of more than 95%.

Embodiment 2

[0019] Example 2: 75% pymetrozine wettable powder.

[0020] Weigh 75% of pymetrozine raw powder, 3% of wetting agent sodium alkylnaphthalene sulfonate, 2% of dispersant polycarboxylate 2700, 3% of sodium lignosulfonate, 0.5% of PVA, 2% of white carbon black , the remainder of kaolin, after mixing it evenly, it was pulverized by a jet mill to obtain 75% pymetrozine wettable powder. After inspection, the active ingredient content is 75.5%, moisture ≤2.0%, pH value 7.5, sieving (passing through a 15μm sieve) ≥98%, suspension rate ≥95%, persistent foaming (1min) ≤10mL, wettability ≤1min ,, Accelerated heat storage stability is qualified. The dosage for controlling wheat aphids is: 45-60 grams (active ingredient) / hm of winter wheat 2 , the control effect is 85%~100%; spring wheat 30~45g (active ingredient) / hm 2 , The control effect is 85% to 95%.

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Abstract

The invention relates to a polymer-containing wettable powder. The wettable powder is composed of, by weight, 0.1%-90% of effective constituent chlorothalonil or pymetrozine, 1%-5% of wetting agents, 1%-10% of dispersants, 0.1%-5% of polymers, 0.1%-10% of photosynthetic promoters, the balance being fillers. The wettable powder overcomes the defects of low suspension rate and no yield increase effect of ordinary high-content wettable powder. The wettable powder can reduce the pollution to the environment, reduce the packaging and transportation cost, raise the cost performance of products, and reduce the usage cost of farmers.

Description

technical field [0001] The invention belongs to the field of pesticide preparations, in particular to a polymer-containing wettable powder. Background technique [0002] PVA (polyvinyl alcohol), molecular formula: [C 2 h 4 O]n. PVA is soluble in water, and the higher the water temperature, the greater the solubility, but it is almost insoluble in organic solvents. PVA solubility varies with degree of alcoholysis and degree of polymerization. PVA with partial alcoholysis and low degree of polymerization dissolves very quickly, while PVA with complete alcoholysis and high degree of polymerization dissolves slowly. As a general rule, on the solubility of PVA, the degree of alcoholysis is greater than the degree of polymerization. The PVA dissolution process is carried out in stages, namely: affinity wetting---swelling---infinite swelling---dissolving. Film-forming PVA is easy to form a film, and its mechanical properties are excellent. The tensile strength of the film in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/14A01N43/707A01N37/34
Inventor 阎工程彭述明杨勇林周斌
Owner GUANGDONG ZHONGXUN AGRI TECH
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