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Application of a star-shaped polycation-based compound as a fungicide

A multi-cation and compound technology, which is applied in the field of application of star-shaped multi-cation-based compounds as fungicides, can solve the problems of large dosage, large foam, and short effective duration of agents, etc., and achieve the effect of strong bactericidal ability

Active Publication Date: 2020-06-02
KENTE CATALYSTS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of bactericide has many shortcomings in the oilfield water injection system, mainly manifested in the short effective duration of the agent, the microorganisms are easy to develop resistance to it, the dosage is large, the cost is high, and there are many foams when used, and it is not easy to remove.

Method used

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  • Application of a star-shaped polycation-based compound as a fungicide
  • Application of a star-shaped polycation-based compound as a fungicide
  • Application of a star-shaped polycation-based compound as a fungicide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Be that 20% methylamine aqueous solution (23.25g, wherein contain methylamine 4.65g, 0.15mol) and acidic catalyst (85%H 3 PO 4 , 0.30g), warming up to 40 ° C, dropwise added a mass fraction of 70% trimethylolpropane - three (3- aziridinyl propionate) aqueous solution (35.42g, which contains trimethylolpropane - three (3-Aziridinyl propionate) 21.25 g, 0.05 mol), the dropping time is 40 min. After the dropwise addition, the temperature was raised to 70° C. for 5 h.

[0033] (2) The above reaction solution was mixed with K 2 CO 3 Adjust to weakly alkaline (pH=9~10), under the protection of nitrogen, add dropwise a 60% mass fraction of methyl chloride ethanol solution (25.25g, which contains 15.15g of methyl chloride, 0.30mol), and react at 50°C for 10h ; After the reaction, the insoluble matter was removed, the reaction solution was concentrated, the product was purified by toluene column chromatography, and the product was vacuum-dried to constant weight to obtai...

Embodiment 2

[0039] (1) It is 70% ethylamine aqueous solution (9.54g, wherein containing ethylamine 6.75g, 0.15mol) and acidic catalyst (85%H 3 PO 4 , 0.30g), warming up to 50 ° C, dropwise adding a mass fraction of 70% trimethylolpropane-three (3- aziridinyl propionate) aqueous solution (35.42g, which contains trimethylolpropane-three (3-Aziridinyl propionate) 21.25 g, 0.05 mol), the dropping time is 40 min. After the dropwise addition was completed, the temperature was raised to 70° C. for 7 h.

[0040] (2) The above reaction solution was mixed with K 2 CO 3Adjust to weakly alkaline (pH = 9 ~ 10), under the protection of nitrogen, dropwise add benzyl chloride ethanol solution (47.48g, containing 37.98g, 0.30mol) of benzyl chloride with a mass fraction of 80%, at 70°C React for 16 hours; remove the insoluble matter after the reaction, concentrate the reaction solution, purify and isolate the product by toluene column chromatography, and vacuum dry to constant weight to obtain the prod...

Embodiment 3

[0054] (1) Be that 80% dodecyl primary amine ethanol solution (34.69g, wherein contain dodecyl primary amine 27.75g, 0.15mol) and acidic catalyst (85%H 3 PO 4 , 0.50g), be warming up to 50 ℃, dropwise add the trimethylolpropane-three (3- aziridinyl propionate) ethanol solution (35.42g, containing trimethylolpropane- Tris(3-aziridinyl propionate) 21.25 g, 0.05 mol), and the dropping time is 40 min. After the dropwise addition was completed, the temperature was raised to 70° C. for 6 h.

[0055] (2) The above reaction solution was mixed with K 2 CO 3 Adjust to weakly alkaline (pH=9~10), under the protection of nitrogen, add dropwise a 60% mass fraction of methyl chloride ethanol solution (25.25g, which contains 15.15g of methyl chloride, 0.30mol), and react at 50°C for 10h ; After the reaction, the insoluble matter was removed, the reaction solution was concentrated, the product was purified by toluene column chromatography, and the product was vacuum-dried to constant weigh...

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Abstract

The invention discloses an application of a star type polycation based compound as bactericide. A high performance star type poly-quaternary ammonium salt bactericide is synthesized. The bactericide can effectively inhibit hydration, swelling, dispersion and migration of clay even if the using amount of the bactericide is very low. The molecules of the cation bactericide comprise 18 quaternary ammonium salt groups, thus the bactericide can act on the clay particles with negative charges through multiple sites, the adsorption degree is high, the using amount is low, and the swelling inhibitingperformance is excellent. The cation bactericide can be widely used to process oil containing sewage in an oil field.

Description

technical field [0001] The invention relates to the technical field of preparation of polyquaternary ammonium salt cationic surfactants, in particular to the application of a star-shaped polycation-based compound as a fungicide. Background technique [0002] Oilfield water injection systems often contain a large number of bacteria, such as sulfate reducing bacteria, iron bacteria, saprophytic bacteria, etc. These bacteria widely exist in anaerobic mud, freshwater sediments, saltwater and seawater habitats, metal pipelines and other environments , They can corrode metal equipment, lead to increased sludge in the circulating water system, block pipes, affect heat transfer efficiency, deteriorate water quality, reduce the treatment effect of water treatment chemicals, and bring a lot of inconvenience to production. At present, the method used to control bacteria in oil fields is mainly to put quaternary ammonium salt fungicides, such as dodecyldimethylbenzyl ammonium chloride (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N37/44A01P1/00C07C227/18C07C229/16
CPCA01N37/44C07C227/18C07C229/16
Inventor 王晨王霞辛燕杨晓武费贵强
Owner KENTE CATALYSTS INC
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