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Preparation method of compound fertilizer anti-caking agent

An anti-caking agent and fertilizer technology, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve problems such as poor fluidity, achieve the effects of increasing flow performance, reducing water absorption performance, and improving anti-caking effect

Inactive Publication Date: 2018-03-16
常州市泰英物资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention: Most of the current anti-caking agents are pastes formed by dispersing high melting point substances such as amine flakes and paraffin in vegetable oil or mineral oil. Heating to increase its fluidity can fill the problem. The invention provides a preparation method of a compound fertilizer anti-caking agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] A preparation method of a compound fertilizer anti-caking agent. The preparation method includes the following steps:

[0022] (1) In parts by weight, take 60 to 65 parts of water, 45 to 55 parts of acetone, 35 to 40 parts of polyglutamic acid, 25 to 30 parts of dimethylformamide, 22 to 24 parts of toluene diisocyanate, 17 ~19 parts supplements, 13-15 parts ethylene glycol, 10-15 parts 1,4-butanediol, 4-6 parts catalyst and 2-5 parts additives;

[0023] (2) First put water, acetone, polyglutamic acid, dimethylformamide, 1,4-butanediol and additives into the reactor, preheat at 80~90℃ for 30min, then add toluene diisocyanate , Catalyst and ethylene glycol, raise the temperature to 100~130℃, stir and react for 4~6h;

[0024] (3) After the completion of the reaction, add supplements, use nitrogen to exhaust the gas in the reactor, increase the pressure to 1.0-1.2MPa, react for 3-5h, cool to room temperature, collect the reaction mixture, and filter, and collect the filtrate. Ob...

Embodiment 1

[0028] The supplement is 3-aminopropyltriethoxysilane.

[0029] The catalyst is a mixture of palladium-carbon catalyst (Shaanxi Ruike New Materials Co., Ltd.), platinum catalyst (Tianjin Saifei Chemical Technology Development Co., Ltd.) and titanium dioxide in a mass ratio of 1:1:1.

[0030] The additive is dioctyl sodium dibutyrate sulfonate.

[0031] A preparation method of a compound fertilizer anti-caking agent. The preparation method includes the following steps:

[0032] (1) In parts by weight, take 63 parts of water, 50 parts of acetone, 38 parts of polyglutamic acid, 28 parts of dimethylformamide, 23 parts of toluene diisocyanate, 18 parts of supplements, 14 parts of ethylene glycol, 13 parts 1,4-butanediol, 5 parts catalyst and 4 parts additives;

[0033] (2) First put water, acetone, polyglutamic acid, dimethylformamide, 1,4-butanediol and additives into the reactor, preheat at 85°C for 30 minutes, and then add toluene diisocyanate and catalyst And ethylene glycol, raise the...

Embodiment 2

[0037] The supplement is 3-aminopropyltriethoxysilane.

[0038] The catalyst is a mixture of palladium-carbon catalyst (Shaanxi Ruike New Materials Co., Ltd.), platinum catalyst (Tianjin Saifei Chemical Technology Development Co., Ltd.) and titanium dioxide in a mass ratio of 1:1:1.

[0039] The additive is fatty alcohol polyoxyethylene ether.

[0040] A preparation method of a compound fertilizer anti-caking agent. The preparation method includes the following steps:

[0041] (1) In parts by weight, take 65 parts of water, 55 parts of acetone, 40 parts of polyglutamic acid, 30 parts of dimethylformamide, 24 parts of toluene diisocyanate, 19 parts of supplements, and 13-15 parts of ethylene dichloride Alcohol, 15 parts of 1,4-butanediol, 6 parts of catalyst and 5 parts of additives;

[0042] (2) First put water, acetone, polyglutamic acid, dimethylformamide, 1,4-butanediol and additives into the reactor, preheat at 90°C for 30 minutes, and then add toluene diisocyanate and catalyst An...

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Abstract

The invention relates to the technical field of fertilizer and especially relates to a preparation method of a compound fertilizer anti-caking agent. Polyglutamic acid is taken as the basic material,because polyglutamic acid has an excellent water absorbing performance, dryness in fertilizer can be maintained effectively; at the same time, polyglutamic acid has an excellent film forming performance and is capable of forming a protective film on the fertilizer surface; then dimethyl formamide and toluene diisocyanate are used to modify polyglutamic acid so as to enhance the waterproof performance, at the same time, amido groups are introduced into polyglutamic acid so as to prevent / interfere the formation of a hydrogen bond net like structure, thus the anti-caking effect is enhanced; a supplement is combined with modified polyglutamic acid under the action of a catalyst, silicon-oxygen bonds are introduced into polyglutamic acid, the water absorbing performance is reduced, the combination degree among fertilizer is improved, at the same time, potassium ions are introduced to form same charges on the surface of the anti-caking agent so as to prevent caking; finally modified polyglutamic acid is used to wrap wax and diatomite, the flowing performance is strengthened, and the anti-caking agent does not need to be heated during the filling process.

Description

Technical field [0001] The invention relates to the technical field of fertilizers, in particular to a method for preparing a compound fertilizer anti-caking agent. Background technique [0002] Compound fertilizer refers to a fertilizer made by chemical methods or blending methods that contain at least two of the three nutrients of nitrogen, phosphorus, and potassium. Fertilizers containing any two elements of nitrogen, phosphorus and potassium are called binary compound fertilizers. Compound fertilizer containing nitrogen, phosphorus and potassium at the same time is called ternary compound fertilizer, and uses N-P 2 O 5 -K 2 The formula of 0 represents the corresponding percentage of nitrogen, phosphorus, and potassium. In addition, some fertilizer products add middle and trace elements, organic matter, pesticides or plant growth regulators to traditional binary and ternary compound fertilizers as functional compound fertilizers. In our country, compound fertilizer is a coll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05G3/20
Inventor 刘蓉凤刘芳尹凯欣
Owner 常州市泰英物资有限公司
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