Film-forming agent used for seed coating agent as well as preparation method and application thereof

A film-forming agent and dispersing agent technology, applied in the field of biological pesticide preparation, can solve the problems of unfavorable seed germination, easy to fall off into powder, poor fluidity of preparations, etc. The effect of short film time

Inactive Publication Date: 2018-12-21
LINYI JINQIU DALIANG AGRI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The nature of polymer film-forming agents determines that the film-forming strength of their high-bonding properties is generally low, and the fluidity of the preparation is poor, the film-forming is uneven, the wear resistance of the film is poor, and it is easy to form. powdery exfoliation
The seed coating agents prepared by using these film-forming agents are not only unfavorable for the germination of seeds, but also easily fall off after the seeds are coated, and the use effect is relatively poor.

Method used

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  • Film-forming agent used for seed coating agent as well as preparation method and application thereof
  • Film-forming agent used for seed coating agent as well as preparation method and application thereof
  • Film-forming agent used for seed coating agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation method of polyvinyl alcohol blending modified film-forming agent, the steps are as follows:

[0029] Weigh 10 g of polyvinyl alcohol and mix it with 90 g of distilled water, heat and stir until completely dissolved to obtain 10% polyvinyl alcohol by mass fraction.

[0030] The polyvinyl alcohol used is PVA17-92.

[0031] The VAE emulsion was stirred in warm water at 50°C to prepare an emulsion with a mass fraction of 20% for later use.

[0032] Gum arabic, chitosan, gelatin, alginic acid and sodium carboxymethyl cellulose were respectively formulated into solutions with a mass fraction of 10%.

[0033] Mix 10% polyvinyl alcohol and 20% VAE emulsion (vinyl acetate-ethylene copolymer emulsion) with 10% gum arabic, chitosan, gelatin, alginic acid and sodium carboxymethyl cellulose solution at a ratio of 1:1:1 Specific mixing, colloid grinding for 10 minutes, adding 2% calcium lignosulfonate, and high-speed shearing at 12000r / min for 25 minutes to obtain a...

Embodiment 2

[0049] After mixing 10% polyvinyl alcohol, 20% VAE emulsion and 10% gum arabic solution according to the mass ratio in Table 2, the colloid mill was twisted for 10 minutes, and 2% calcium lignosulfonate was added. High-speed shearing for 25 minutes to obtain polyvinyl alcohol blended modified film-forming agents with different dosage ratios.

[0050] Table 2 The distribution ratio of different components of film-forming agent

[0051] group

[0052] 2. Performance evaluation of polyvinyl alcohol blended modified film-forming agent with different dosage ratios

[0053] According to the method in 1., the storage stability, film-forming property and seed germination rate of the film-forming agent of the polyvinyl alcohol blended modified film-forming agent with different dosage ratios were determined. The results are shown in Table 3.

[0054] Table 3 Properties of polyvinyl alcohol blended modified film formers with different dosage ratios

[0055] group

...

Embodiment 3

[0058] A compound seed coating agent for preventing and treating rice sheath blight, comprising the following components in percentage by weight:

[0059] Thiamethoxam 1.2%, Curculigoside 0.6%, Wuningmycin 0.2%, Forchlorfenuron 0.4%, Film-forming agent 8%, Dispersant 6%, Thickener 0.6%, Basic rhodamine 0.5%, Salicylic acid 0.05%, trace elements 0.07%, water balance.

[0060] The trace element is SiO 2 , CaO, and zinc sulfate in a mass ratio of 1:1:1.

[0061] The preparation method of described composite seed coating agent, the steps are as follows:

[0062] 10% polyvinyl alcohol, 20% VAE and 10% gum arabic were mixed at a mass ratio of 1:2:1, colloid milled for 10 minutes, 2% dispersant was added, high-speed shearing was performed at 12000r / min for 25 minutes, and 0.5 % alkaline rhodamine, dispersed on a high-speed shearing tissue disperser for 25 minutes; weighed liquid medicine, thickener, remaining dispersant, water, mixed at a high speed and sheared evenly, put into a ...

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Abstract

The invention discloses a film-forming agent used for a seed coating agent as well as a preparation method and application thereof, and belongs to the technical field of biopesticide preparation. Thepolyvinyl alcohol blend modified film-forming agent is prepared by mixing 10% polyvinyl alcohol, 20% of vinyl acetate-ethylene copolymer emulsion and 10% of polysaccharide or polysaccharide derivativeaccording to a mass ratio of (1 to 3) to (1 to 3) to (1 to 5). The film-forming agent is short in film-forming time and good in film-forming uniformity; the water and air permeability is good, and the film-forming agent is safe to crops, and does not affect seed germination; by using a seed coating agent prepared from the film-forming agent for coating seeds, the activity of the seeds can be improved, and the emergency rate of the seeds is improved; an effective component in the seed coating agent releases slowly, is long in lasting period, is beneficial for killing soil-borne pathogenic bacteria and insects and protecting the seeds, and is beneficial for sprouting and growing of the seeds.

Description

technical field [0001] The invention belongs to the technical field of biopesticide preparation, and in particular relates to a film-forming agent for seed coating agent, its preparation method and application. Background technique [0002] In agricultural production research, seed pesticide treatment is one of the most economical and convenient methods to control underground pests and crop soil-borne and seed-borne diseases. Seed coating technology is a relatively common new seed treatment technology developed on the basis of traditional seed soaking or seed dressing technology. Seed Coating formulation is a special type of pesticide formulation gradually formed with the development of crop seed coating technology. It is a pesticide formulation with film-forming properties for the treatment of crops or other plant seeds. [0003] Film formers are the most critical functional components in seed coating formulations. The film-forming ductility of the film-forming agent aff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/10A01N51/00A01N43/16A01N43/24A01N47/36A01N37/36A01N57/16A01N43/90A01N43/60A01P3/00
CPCA01N25/10A01N37/36A01N43/16A01N43/24A01N43/60A01N43/90A01N47/36A01N51/00A01N57/16
Inventor 刘伟冯尚宗于晓燕张连光
Owner LINYI JINQIU DALIANG AGRI TECH CO LTD
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