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Self-emulsifying antifoaming agent and preparation method thereof

A self-emulsifying, defoamer technology, applied in chemical instruments and methods, separation methods, foam dispersion/prevention, etc. The problem is to eliminate the high temperature demulsification and stratification, reduce the production cost, and the method is simple and easy to implement.

Inactive Publication Date: 2018-04-13
乌鲁木齐市华泰隆化学助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the compound defoamers reported in the literature have good effects, they are all emulsified by adding an emulsifier. The disadvantage of this method is that the emulsifier has high temperature demulsibility, and the emulsification is not necessarily complete. After high temperature sterilization, demulsification, floating oil, and even stratification are prone to occur, which seriously affects its appearance and use effect; moreover, most emulsifiers have foaming properties, and when they are used in large amounts, the effect of defoamers will be reduced instead.

Method used

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  • Self-emulsifying antifoaming agent and preparation method thereof
  • Self-emulsifying antifoaming agent and preparation method thereof

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preparation example Construction

[0026] The embodiment of the present invention also provides a preparation method of a self-emulsifying defoamer, comprising: stirring and mixing the mixed raw materials; the mixed raw materials include 8-40 parts of polyether-modified silicon, 10-50 parts of polyether and 30-100 parts Parts of water. When the raw materials only include polyether-modified silicon, polyether and water, the three can be mixed. During the mixing process, measures such as mechanical stirring are used to mix the components evenly and obtain a stable emulsion.

[0027] When the mixed raw materials also include 0.1-5 parts of thickener and 0.1-5 parts of white carbon black, the preparation method of self-emulsifying defoamer adopts a three-step method for mixing, and the emulsion is gradually transformed from a water-in-oil phase by a phase inversion method It forms an oil-in-water phase, which enhances the emulsification effect and makes the performance of the obtained defoamer product uniform and s...

Embodiment 1

[0040] This embodiment provides a self-emulsifying defoamer, which includes 8 parts of JS-R201 polyether-modified silicon, 5 parts of polyether and 30 parts of water in parts by weight.

[0041] Present embodiment also provides a kind of preparation method of self-emulsifying type defoamer, it comprises the following steps:

[0042] 8 parts of polyether-modified silicon, 5 parts of polyether and 30 parts of water were mixed and stirred for 100 min.

Embodiment 2

[0044] This embodiment provides a self-emulsifying defoamer, which includes 40 parts of JS-R201 polyether-modified silicon, 50 parts of polyether, 100 parts of water, 3 parts of cellulose and 5 parts of particle size in parts by weight. Hydrophobic silica of 5 μm.

[0045] Present embodiment also provides a kind of preparation method of self-emulsifying type defoamer, it comprises the following steps:

[0046] First, 40 parts of JS-R201 polyether-modified silicon, 50 parts of polyether and 5 parts of white carbon black were mixed and stirred for 60 minutes at a temperature of 40°C to obtain an oil phase mixture;

[0047] Next, slowly add 3 parts of cellulose to 100 parts of water in three times, and stir at a temperature of 40°C until the cellulose is fully dissolved to obtain an aqueous phase mixture;

[0048] Finally, the water phase mixture was added into the oil phase mixture in three batches, stirred at 60° C. for 60 min, and then sheared with a high-speed shear emulsifi...

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Abstract

The invention discloses a self-emulsifying antifoaming agent and a preparation method thereof, and relates to the technical field of fine chemical engineering products. The self-emulsifying antifoaming agent comprises, by weight, 8-40 parts of polyether-modified silicon, 10-50 parts of polyether and 30-100 parts of water. The polyether-modified silicon is compounded with the polyether to achieve excellent synergistic effects, and an antifoaming agent emulsion can be obtained without adding an emulsifier, so the production cost is reduced, and the antifoaming agent emulsion is suitable for being used in the fermentation industry system as an antifoaming agent. The method for preparing the self-emulsifying antifoaming agent is simple and is easy to implement. The prepared antifoaming agent has excellent high temperature resistance, excellent stability and excellent defoaming performance, prevents a high-temperature demulsification layering phenomenon caused by the emulsifier, and also avoids the pollution of the emulsifier to a filter ceramic film in the fermentation extraction process.

Description

technical field [0001] The invention relates to the technical field of fine chemical products, and in particular to a self-emulsifying defoamer and a preparation method thereof. Background technique [0002] In the fermentation production process of fermentation systems such as amino acids, drugs, beer, etc., due to stirring, ventilation, microbial metabolism and other reasons, a large amount of foam will inevitably be produced during the fermentation production process. If defoaming is not carried out in time, part of the fermentation liquid will overflow, which will increase the loss of materials and the chance of bacterial contamination. Therefore, it is often necessary to add defoaming agents to suppress the generation of foam in the industrial production process. In particular, the food fermentation industry is an industry that has high requirements for defoamers. The defoamers used must be non-toxic and harmless, not affect the normal growth of bacteria, and must be re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/04
CPCB01D19/0409
Inventor 满小林王刚霞姜雪闫世友
Owner 乌鲁木齐市华泰隆化学助剂有限公司