Non-foaming and low surface tension surfactant and preparation method and application thereof

A technology of low surface tension and surfactant, applied in the field of preparation and application of fine chemicals, can solve the problem of high surface tension, and achieve the effects of convenient operation, simple production process and simple process

Inactive Publication Date: 2019-06-07
祺农化工科技(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although Pluronic 17R4 has made progress in foaming power, the surface tension is still high, which is higher than the surface tension of traditional hydrocarbon surfactants with strong foaming power of 27-41mN / m

Method used

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  • Non-foaming and low surface tension surfactant and preparation method and application thereof
  • Non-foaming and low surface tension surfactant and preparation method and application thereof
  • Non-foaming and low surface tension surfactant and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] A kind of non-foaming, low surface tension surfactant, calculated by mass percentage, its raw material composition and content are as follows:

[0060] Active Ingredient A 60%

[0061] Active ingredient B 40%;

[0062] The active component A is PEG400MO, and the PEG400MO is polyethylene glycol monooleate with an average molecular weight of 400;

[0063] The active component B is NP-4, and the NP-4 is nonylphenol polyoxyethylene ether with an average EO number of 4.

[0064] The preparation method of above-mentioned a kind of foam-free, low surface tension surfactant, specifically comprises the steps:

[0065] Add active component A and active component B into the reaction kettle in sequence, control the rotation speed to 80-100r / min and stir evenly to obtain a surfactant with no foam and low surface tension.

Embodiment 2

[0067] A kind of non-foaming, low surface tension surfactant, calculated by mass percentage, its raw material composition and content are as follows:

[0068] Active Ingredient A 57%

[0069] Active ingredient B 43%;

[0070] The active component A is PEG400MO, and the PEG400MO is polyethylene glycol monooleate with an average molecular weight of 400:

[0071] The active component B is NP-4, and the NP-4 is nonylphenol polyoxyethylene ether with an average EO number of 4.

[0072] The above-mentioned preparation method of a foam-free, low surface tension surfactant, the preparation process is the same as in Example 1.

Embodiment 3

[0074] A kind of non-foaming, low surface tension surfactant, calculated by mass percentage, its raw material composition and content are as follows:

[0075] Active Ingredient A 48%

[0076] Active ingredient B 52%;

[0077] The active component A is PEG400MO, and the PEG400MO is polyethylene glycol monooleate with an average molecular weight of 400:

[0078] The active component B is NP-4, and the NP-4 is nonylphenol polyoxyethylene ether with an average EO number of 4.

[0079] The above-mentioned preparation method of a foam-free, low surface tension surfactant, its preparation process is the same as in Example 1.

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Abstract

The invention discloses a non-foaming and low surface tension surfactant and a preparation method and application. The non-foaming and low surface tension surfactant is prepared by simple stirring andeven mixing of 40-60% of PEG400MO and 40-60% of NP-4 calculated according to the mass percentage, the foaming power of the surfactant is 0 mL after 1000 time dilution, and the surface tension is 30-33 mN/m. After applying the surfactant, an oil suspension herbicide containing nicosulfuron and atrazine is obtained, the foaming power of the oil suspension herbicide is 0 mL in 1 min after 250 time dilution, and the surface tension of the oil suspension herbicide is 27-30 mN/m after 1000 time dilution. Therefore, after using the oil suspension herbicide, nicosulfuron and atrazine can more easilypenetrate into the leaf surface and the stem root of weeds, so that the weeding rate of crops per unit area is increased, and the weeding cost of crops per unit area is reduced.

Description

technical field [0001] The invention relates to a non-foaming, low surface tension surfactant and its preparation method and application, belonging to the field of preparation and application of fine chemicals in new material technology. Background technique [0002] Surfactant is a kind of substance that can significantly reduce surface (interface) surface tension when added in a small amount. Its molecule has a unique structure: one end is a hydrophilic polar group, and the other end is a lipophilic non-polar group. Sexual groups, also known as amphiphiles. In the solution, stable and ordered association structures such as micelles, lyotropic liquid crystals, microemulsions, vesicles, worm-like micelles, and microemulsion gels can be formed spontaneously. Widely used in all aspects of human production and life, commonly known as "industrial monosodium glutamate". [0003] However, surfactants usually have foaming properties, which contribute to their application in the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/30A01N25/04A01N47/36A01N43/70A01P13/00
Inventor 王红霞富天颖富光有
Owner 祺农化工科技(上海)有限公司
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