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Preparation method for low-temperature-resistant seed coating agent material

A technology of low temperature resistance and preparation steps is applied in the field of preparation of low temperature resistant seed coating materials, which can solve the problems of destroying the surface layer of plant cells, disorder of plant cell metabolism, poor low temperature resistance performance, etc., so as to reduce the damage and improve the phase transition temperature. , Improve the effect of low temperature resistance

Inactive Publication Date: 2018-06-22
俞小峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problem that the existing seed coating agent has poor low temperature resistance, destroys the surface layer of plant cells and causes the metabolism of plant cells to be disordered, a method for preparing a low temperature resistant seed coating material is provided

Method used

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  • Preparation method for low-temperature-resistant seed coating agent material

Examples

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Comparison scheme
Effect test

example 1

[0019] Take paraffin and heat to melt, collect molten paraffin and count parts by weight, weigh 45 parts of deionized water, 3 parts of Span-80 and 10 parts of molten paraffin respectively and place them in a high-speed shear emulsifier, at 1200r / min Cut down for 25 minutes, and adjust the pH to 4.0 with glacial acetic acid to obtain a dispersed emulsion. Then, in parts by weight, weigh 45 parts of ether, 6 parts of lecithin, 10 parts of dispersed emulsion and 10 parts of cholesterol in a Erlenmeyer flask. Heated in an oil bath at 125°C for 25 minutes, then stood to cool to room temperature, filtered and collected the filter cake, vacuum freeze-dried to obtain a dry filter cake and washed 3 times with a pH of 7.0 disodium hydrogen phosphate-sodium dihydrogen phosphate buffer solution to obtain a modified granules; by weight, weigh 45 parts of xanthan gum, 3 parts of peach gum, 6 parts of lecithin, 3 parts of sodium dodecylsulfonate and 10 parts of modified particles in a mixer,...

example 2

[0021] Take the paraffin and heat to melt, collect the molten paraffin and count by weight parts, weigh 47 parts of deionized water, 4 parts of Span-80 and 12 parts of molten paraffin respectively and place them in a high-speed shear emulsifier, at 1450r / min Cut down for 27 minutes, and adjust the pH to 4.0 with glacial acetic acid to obtain a dispersed emulsion. Then, in parts by weight, weigh 47 parts of ether, 7 parts of lecithin, 12 parts of dispersed emulsion and 12 parts of cholesterol in a Erlenmeyer flask. Heated in an oil bath at 145°C for 27 minutes, then stood to cool to room temperature, filtered and collected the filter cake, vacuum freeze-dried to obtain a dry filter cake and washed 4 times with a pH of 7.0 disodium hydrogen phosphate-sodium dihydrogen phosphate buffer solution to obtain a modified 4 parts of xanthan gum, 4 parts of peach gum, 7 parts of lecithin, 4 parts of sodium dodecylsulfonate and 15 parts of modified granules were weighed in parts by weight ...

example 3

[0023] Take paraffin and heat to melt, collect molten paraffin and count parts by weight, weigh 50 parts of deionized water, 5 parts of Span-80 and 15 parts of molten paraffin respectively and place them in a high-speed shear emulsifier, at 1500r / min Cut down for 30 minutes, and adjust the pH to 4.0 with glacial acetic acid to obtain a dispersed emulsion. Then, in parts by weight, weigh 50 parts of ether, 8 parts of lecithin, 15 parts of dispersed emulsion and 15 parts of cholesterol in a Erlenmeyer flask. Heated in an oil bath at 160°C for 30 minutes, then stood to cool to room temperature, filtered and collected the filter cake, vacuum freeze-dried to obtain a dry filter cake and washed 5 times with a pH of 7.0 disodium hydrogen phosphate-sodium dihydrogen phosphate buffer solution to obtain a modified Parts by weight, respectively weigh 50 parts of xanthan gum, 5 parts of peach gum, 8 parts of lecithin, 5 parts of sodium dodecylsulfonate and 18 parts of modified particles in...

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Abstract

The invention relates to a preparation method for a low-temperature-resistant seed coating agent material, belonging to the technical field of agricultural materials. According to the invention, cholesterol and lecithin are used as wall materials for wrapping of a paraffin material, so a microcapsule particle is prepared; prepared paraffin condenses and releases a great amount of heat when encountering with cold, so the low-temperature resistance of the seed coating agent material is effectively improved; meanwhile, since the surface layer of a prepared seed coating agent has a gel with a hydrophilic structure, the seed coating agent can effectively bond with interior moisture in the epidermal cells of seeds, so partial dehydration of the cells before freezing of the seeds is avoided, thephase transition temperature of cell membranes is improved, and the low-temperature resistance of the seed coating agent material is effectively improved; and an internal structure with the hydrophobic structure is adopted to effectively prevent water from sufficiently penetrating the surface of the seed coating agent, so the internal structure serves as a protective layer to effectively protect internal seed coats from damage by ice crystals formed by freezing and reduce damage to seed coats caused by a low temperature environment, and thus, the low-temperature resistance of the seed coatingagent is effectively improved.

Description

technical field [0001] The invention relates to a preparation method of a low-temperature-resistant seed coating material, which belongs to the technical field of agricultural materials. Background technique [0002] Seed coating technology refers to the manual application of non-seed materials such as insecticides, fungicides, micro-fertilizers, plant growth regulators, colorants, fillers, etc., using selected seeds as carriers through coating agents or film-forming agents. Or the mechanical way is evenly wrapped on the outside of the seeds, so that the active ingredients are released slowly and orderly, so as to enhance the stress resistance and growth characteristics of the seed organisms, and achieve a new method of seed treatment that saves costs and increases efficiency. To put it figuratively, it is to properly put on a functional coat for the seed. Seed coating forms a protective barrier for seeds, which can not only prevent and control pests and diseases, regulate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D105/08C09D7/62C09D7/65A01C1/06
CPCA01C1/06C08L2205/02C08L2205/03C09D105/08C08L5/00C08K13/06C08K9/10C08K5/05C08K5/5205
Inventor 李华蒋益
Owner 俞小峰
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