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Vegetable oil modified defoaming agent and preparation method thereof

A technology of vegetable oil modification and defoaming agent, applied in the direction of foam dispersion/prevention, etc., can solve the problems of poor hydrophilicity, easy deterioration and difficult dispersion, etc., and achieve the effects of improving dispersibility, reducing dosage and saving costs.

Active Publication Date: 2015-01-28
JIANGSU STERRIC CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the long carbon chain structure, its hydrophilicity is poor, and it is difficult to quickly and effectively disperse in water. In addition, because the vegetable oil molecule contains double bonds, it is easy to deteriorate and difficult to store, thus limiting its use.

Method used

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  • Vegetable oil modified defoaming agent and preparation method thereof
  • Vegetable oil modified defoaming agent and preparation method thereof
  • Vegetable oil modified defoaming agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: Prepare vegetable oil modified defoamer according to the following steps

[0025] (1) Add a mixture of 5 kg epoxy soybean oil and isopropanol (the molar ratio of epoxy group to isopropanol in soybean oil is 1.1:5), 10 g fluoroboric acid into the reactor, and stir under nitrogen protection Heating to 100°C, reacting for 2 hours, cooling to room temperature, extracting the reaction mixture with ethyl acetate, then washing the organic layer three times with saturated sodium chloride solution, after liquid separation, the organic layer was distilled under reduced pressure to remove the solvent to obtain soybean oil multi-component alcohol;

[0026] (2) 2 kg soybean oil polyol and 0.26 g Zn 3 [Co(CN) 6 ] 2 0.08ZnCl 2 1.0H 2 Add O 1.5DME into the high-pressure reactor, keep 120°C for dehydration under reduced pressure for 30 min, replace with nitrogen three times during this period, and then put 100 g of propylene oxide to induce the reaction, the ind...

Embodiment 2

[0027] Embodiment 2: prepare vegetable oil modified defoamer according to the following steps

[0028] (1) Add a mixture of 5 kg epoxy soybean oil and isopropanol (the molar ratio of epoxy group to isopropanol in soybean oil is 1:1), 5 g of fluoroboric acid into the reactor, stir and heat under nitrogen protection After reacting for 2 hours at 100°C, cool to room temperature, extract the reaction mixture with ethyl acetate, then wash the organic layer three times with saturated sodium chloride solution, and after separation, the organic layer is distilled under reduced pressure to remove the solvent to obtain soybean oil polyol ;

[0029] (2) 2 kg soybean oil polyol and 0.34 g Zn 3 [Co(CN) 6 ] 2 0.08ZnCl 2 1.0H 2 Add O 1.5DME into the high-pressure reactor, keep 130°C for dehydration under reduced pressure for 30 min, replace with nitrogen three times during this period, and then put 100 g of propylene oxide to induce the reaction. When the pressure drops obviously ...

Embodiment 3

[0030] Embodiment 3: prepare vegetable oil modified defoamer according to the following steps

[0031] (1) Add a mixture of 5 kg epoxy soybean oil and isopropanol (the molar ratio of epoxy group to isopropanol in soybean oil is 1:2) and 8 g fluoroboric acid into the reactor, stir and heat under nitrogen protection After reacting for 2 hours at 100°C, cool to room temperature, extract the reaction mixture with ethyl acetate, then wash the organic layer three times with saturated sodium chloride solution, and after separation, the organic layer is distilled under reduced pressure to remove the solvent to obtain soybean oil polyol ;

[0032] (2) 2 kg soybean oil polyol and 0.52 g Zn 3 [Co(CN) 6 ] 2 0.08ZnCl 2 1.0H 2 Add O·1.5DME into the high-pressure reactor, keep 120°C for dehydration under reduced pressure for 30 min, replace with nitrogen three times during this period, then put in 100 g of propylene oxide to induce the reaction, the induction temperature is control...

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Abstract

The invention discloses a vegetable oil modified defoaming agent and a preparation method thereof. Epoxy vegetable oil, saturated fat monohydric alcohol, ethylene oxide (EO) and propylene oxide (PO) are used as raw materials and subjected to ring-opening polymerization reaction in the presence of a catalyst to obtain the vegetable oil modified defoaming agent. The defoaming agent is prepared by using the vegetable oil as a raw material, so that the dependence on petrochemicals is reduced; EO and PO chains are introduced into molecular chains of the vegetable oil, so that the defects that the vegetable oil is difficult to store, easy to go bad, poor in hydrophilic property and difficult to effectively disperse in water are overcome, and the defoaming agent has good emulsification, dispersion and permeation performance and excellent defoaming performance, is safe and nontoxic and has good biodegradability; and the preparation process is clean and efficient, and emission of waste gas, waste water and waste residue is nearly avoided.

Description

technical field [0001] The invention belongs to the technical field of preparation of nonionic surfactants, and in particular relates to a vegetable oil modified defoamer and a preparation method thereof. Background technique [0002] In many industrial production processes (such as sewage treatment, printing and dyeing, paper production, food processing and natural gas desulfurization, etc.), the existence of a large number of foams often causes inconvenient operation, reduced equipment capacity and waste of raw materials, and even leads to serious product failure. Quality problems cause huge economic losses. Therefore, how to effectively control foam in the production process is of great significance for improving production efficiency and product quality. Since the German physicist Quinck first used ether to eliminate foam, the defoamer has undergone several updates and has developed very rapidly. There are many types of compounds with defoaming agent properties, and cu...

Claims

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Application Information

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IPC IPC(8): B01D19/04C08G65/28
Inventor 侯琳熙易思利龙金林凌坤华范阳海
Owner JIANGSU STERRIC CHEM IND
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