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Foamless surfactant with low surface tension and preparing method and application thereof

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

Inactive Publication Date: 2019-05-21
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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  • Foamless surfactant with low surface tension and preparing method and application thereof
  • Foamless surfactant with low surface tension and preparing method and application thereof
  • Foamless surfactant with low surface tension and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A kind of non-foaming, low surface tension surfactant, calculated by mass percentage, its raw material composition and content are as follows:

[0059] Active Ingredient A 40%

[0060] Active ingredient B 50%

[0061] Active ingredient C 10%;

[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 active component C is RM2020, and the RM2020 is a block copolymer of C16-C22 fatty alcohol ether EO and PO.

[0065] The preparation method of above-mentioned a kind of foam-free, low surface tension surfactant, specifically comprises the steps:

[0066] First, add the active component C into the reaction kettle, heat it to 60-70°C, make the active component C, namely RM2020, become a transparent flowing liquid, then add the active component A and active compo...

Embodiment 2

[0068] A kind of non-foaming, low surface tension surfactant, calculated by mass percentage, its raw material composition and content are as follows:

[0069] Active Ingredient A 48%

[0070] Active ingredient B 44%

[0071] Active ingredient C 8%;

[0072] The active component A is PEG400MO, and the PEG400MO is polyethylene glycol monooleate with an average molecular weight of 400:

[0073] The active component B is NP-4, and the NP-4 is nonylphenol polyoxyethylene ether with an average EO number of 4;

[0074] The active component C is RM2020, and the RM2020 is a block copolymer of C16-C22 fatty alcohol ether EO and PO.

[0075] 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

[0077] A kind of non-foaming, low surface tension surfactant, calculated by mass percentage, its raw material composition and content are as follows:

[0078] Active Ingredient A 60%

[0079] Active ingredient B 35%

[0080] Active ingredient C 5%;

[0081] The active component A is PEG400MO, and the PEG400MO is polyethylene glycol monooleate with an average molecular weight of 400:

[0082] The active component B is NP-4, and the NP-4 is nonylphenol polyoxyethylene ether with an average EO number of 4;

[0083] The active component C is RM2020, and the RM2020 is a block copolymer of C16-C22 fatty alcohol ether EO and PO.

[0084] 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 foamless surfactant with low surface tension, a preparing method and application. The foamless surfactant with low surface tension is prepared by simply heating and uniformlymixing, by mass, 40-60% of PEG400MO, 35-50% of NP-4 and 5-15% of RM2020, wherein the RM2020 serves as segmented copolymers of C16-C22 fatty alcohol ether EO and PO, and after being diluted to 1,000 folds, the surfactant has the foaming power of 0 mL and the surface tension of 31-32 mN / m. After the surfactant is applied, an obtained oil suspending agent herbicide containing nicosulfuron and atrazine has the 1-min-foamability of 0 mL after being diluted to 250 folds, and has the surface tension of 27-29 mN / m after being diluted to 1,000 folds. Therefore, after the herbicide is utilized, the nicosulfuron and atrazine can more easily permeate into leaf surfaces and stem and root parts of weeds, thus the weeding rate of crops per unit area by the foamless surfactant is increased, and the weeding cost of the crops per unit area is lowered.

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): A01N25/30A01N47/36A01N43/70A01N25/04A01P13/00
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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