TW202124021A - Antifoaming composition including a defoaming agent, a froth preventing agent, a dispersing wetting agent and a penetrant - Google Patents

Abstract

An antifoaming composition includes 5 wt% ~ 40 wt% defoaming agent, 20 wt% ~ 80 wt% froth preventing agent, 0 wt% ~ 25 wt% dispersing wetting agent, and 5 wt% ~ 30 wt% penetrant. The present invention also provides a method for preparing an antifoaming composition, comprising the steps of mixing a defoaming agent and a penetrant to form a mixture, and mixing the froth preventing agent with the mixture. The mixing is carried out by stirring, and the stirring speed is 100 rpm ~ 3000 rpm. The defoaming agent includes at least one material selected from the group consisting of fatty acid ester non-ionic surfactant, water-insoluble polyether, white oil, horse oil, vegetable oil, wax, petrolatum, mineral oil, and an isomer or modified substance of the above-described component. The froth preventing agent is a saturated alkanol polyether with a total carbon number of 10 or more, or HO-(C2H4O)x-(C3H6O)y-(C2H4O)z-H, where x+y+z is equal to 10 and its molecular weight is greater than 500. The dispersing wetting agent is a non-ionic surfactant with a hydrophilic-lipophilic balance value ranging from 1 to 9, wherein the non-ionic surfactant includes at least one material selected from the group consisting of glycol monooleate, polyoxypropylene stearate, sorbitan laurate, sorbitol monooleate polyester, sorbitan monooleate, sorbitan trioleate, polyoxyethylene polyoxypropylene oleate, polyoxypropylene mannitol oleate, polyoxyethylene lanolin, polyoxyethylene fatty acid ester, polyoxyethylene polyoxypropylene block copolymer, and oil-modified nonionic surfactant. The penetrant includes an ester nonionic surfactant, wherein the ester nonionic surfactant is R1-C(O)O-R2, where R1 and R2 are alkyl, alkanol ether, -X2-C6H5 or phenyl and their total carbon number is ranged from 3 to 30. Thus, the antifoaming composition of the present invention can inhibit or reduce the foam formation, reduce the foam volume, increase the foam disappearance speed, and increase the stability (no stratification or no precipitation) when it is used to form polyvinyl alcohol aqueous solution at 80~90 °C.

Description

Anti-foam composition and preparation method of anti-foam composition

The present invention relates to a composition that reduces the formation of foam or reduces the generated foam, and particularly refers to an anti-foam composition comprising a foam suppressant, a dispersed wetting agent and a penetrating agent.

Polyvinyl alcohol (PVA) is an important raw material in the chemical industry, and it is widely used in the fields of textiles, papermaking, coatings, chemistry, construction, ceramics, adhesives, electronics or cosmetics. In various fields, the polyvinyl alcohol particles are generally dispersed in water and heated to 80°C to 90°C. Under stirring, the polyvinyl alcohol particles are gradually dissolved in the water to form an aqueous solution of polyvinyl alcohol before use. However, In the dissolution process under such temperature conditions, a large amount of difficult-to-eliminate foam will be produced with stirring, especially polyvinyl alcohol with an alcoholysis degree of 80-90 mol%, which causes considerable inconvenience in subsequent applications.

In order to improve the above problems, defoamers are generally added. Although defoamers can reduce the amount of foam, there are still problems such as excessive foam volume and overflow on the edge of the container or slow foam disappearance, which reduces production efficiency.

Therefore, an object of the present invention is to provide an anti-foaming composition that can overcome at least one of the disadvantages of the prior art.

Therefore, the anti-foam composition of the present invention comprises 5wt% to 40wt% of defoaming and defoaming agent, 20wt% to 80wt% of foam suppressor, 0wt% to 25wt% of dispersing wetting agent, and 5wt% to 30wt% of penetrant .

Another object of the present invention is to provide a method for preparing the anti-foam composition.

The preparation method of the anti-foam composition of the present invention includes mixing the anti-foaming and defoaming agent and the penetrating agent to form a mixture; mixing the anti-foaming agent with the mixture.

The effect of the present invention is that the anti-foam composition of the present invention can inhibit (reduce) the formation of foam, eliminate (reduce) the generated foam, reduce the volume of foam, Improve the foam disappearing speed, and increase the stability (for example, no delamination or no precipitation, etc.).

The content of the present invention will be described in detail below.

>Defoaming and defoaming agent>

Based on the total amount of the anti-foam composition being 100 wt%, the content of the defoaming and defoaming agent is 5 wt% to 40 wt%. The defoaming and defoaming agent can be selected according to the characteristics of the polyvinyl alcohol (such as the degree of alcoholysis), the characteristics of the polyvinyl alcohol aqueous solution (such as surface tension), or the characteristics of the foam (such as viscoelasticity). The defoaming and defoaming agent can be used singly or in combination of multiple types, and the defoaming and defoaming agent is for example, but not limited to, fatty acid ester non-ionic surfactants, non-water-soluble polyethers, white oil, horse oil, vegetable oil, Wax, petrolatum, mineral oil, isomers of the above-mentioned components, or modified products of the above-mentioned components. The modified substance refers to a substance formed by a modification treatment such as hydrogenation, esterification, or amination. The fatty acid ester type nonionic surfactants such as triglycerol monostearate, hexaglycerol distearate, decaglycerol hexastearate, triglycerol monooleate, triglycerol di Laurate, ethylene glycol distearate, propylene glycol monostearate, propylene glycol monooleate, propylene glycol monolaurate, glyceryl monolaurate, glyceryl dilaurate, glyceryl monostearate , Glyceryl distearate, glyceryl monooleate, pentaerythritol monostearate, pentaerythritol distearate, pentaerythritol tristearate, pentaerythritol tetraisostearate, pentaerythritol oleate, pentaerythritol double Oleate, pentaerythritol trioleate, pentaerythritol tetraoleate, isononyl isononanoate, octyldodecyl myristate, tetradecyl myristate, hexadecyl hexadecanoate, block laurel Acid esters, block stearic acid esters, block oleic acid esters, comb-shaped grafted fatty acid esters, star-shaped grafted fatty acids, etc. The block laurate is, for example, polyol polyether laurate. The polyol polyether laurate is, for example, glycerol polyoxyethylene polyoxypropylene ether laurate. The block stearate is, for example, polyol polyether stearate. The polyol polyether stearate is, for example, glycerol polyoxyethylene polyoxypropylene ether stearate. The block oleate is, for example, polyol polyether oleate. The polyol polyether oleate is, for example, glycerol polyoxyethylene polyoxypropylene ether oleate. The comb-shaped graft fatty acid ester is, for example, acrylic acid fatty acid ester. The star-shaped grafted fatty acid is, for example, cyclodextrin fatty acid ester or pentaerythritol tetraricinoleate. The non-water-soluble polyether is, for example, but not limited to, polyoxypropylene with a molecular weight greater than 1000 or polyoxyethylene polyoxypropylene random polyether with a molecular weight greater than 2000. The vegetable oil is for example, but not limited to, hard palm oil, castor oil, or shea butter.

>Foam suppressor>

Based on the total amount of the anti-foam composition being 100% by weight, the content of the antifoaming agent is 20% by weight to 80% by weight. The anti-foaming agent is, for example, a non-ionic surface active substance that has anti-foaming and anti-foaming effects on aqueous solutions at a temperature above 80°C. The suds suppressor has at least one condition consisting of the following groups: the cloud point range is below 80°C, is saturated alkanol polyether including saturated alkanol groups with a total carbon number of 10 or more, or is HO-(C ₂ H ₄ O) _x -(C ₃ H ₆ O) _y -(C ₂ H ₄ O) _z -H and x+y+z is 10 or more and the molecular weight is more than 500. The saturated alkanol group is X ¹ -O-, where X ¹ is an alkyl group. The suds suppressor can be used alone or in combination of multiple, and the suds suppressor is for example but not limited to fatty alcohol polyoxyethylene ether, fatty alcohol polyoxyethylene polyoxypropylene block polyether, water-soluble polyoxyethylene polyoxypropylene Block polyethers, or isomers of the above-mentioned components, etc. The fatty alcohol polyoxyethylene ether is for example laureth polyoxyethylene ether, isomeric deca alcohol polyoxyethylene ether, isoterdecanol polyoxyethylene ether, tridecanol polyoxyethylene ether, tetradecanol polyoxyethylene ether, Oleyl alcohol polyoxyethylene ether, or cetearyl alcohol polyoxyethylene ether, etc. The ethylene oxide (EO) number of the isotridecyl alcohol polyoxyethylene ether is 3 to 5. The fatty alcohol polyoxyethylene polyoxypropylene block polyether is, for example, isomeric tridecanol polyoxyethylene polyoxypropylene block polyether, lauryl polyoxyethylene polyoxypropylene block polyether, tridecanol polyoxyethylene Polyoxypropylene block polyether, tetradecanol polyoxyethylene polyoxypropylene block polyether, oleyl alcohol polyoxyethylene polyoxypropylene block polyether, or cetearate polyoxyethylene polyoxypropylene block polyether Ether and so on.

>Dispersing wetting agent>

Based on the total amount of the anti-foam composition being 100% by weight, the content of the dispersed wetting agent is 0% to 25% by weight. The dispersive wetting agent helps the anti-foam composition to increase the stability when used to form a polyvinyl alcohol aqueous solution at 80°C to 90°C, so as to reduce the problem of precipitates on the surface. The dispersive wetting agent is a non-ionic surfactant with a hydrophilic lipophilic balance (HBL) in the range of 1-9. The dispersive wetting agent can be used alone or in a mixture of multiple, and the dispersing wetting agent is for example, but not limited to, ethylene glycol monooleate, polyoxypropylene stearate, sorbitan laurate, sorbitol mono Oleate, sorbitan monooleate, sorbitan trioleate, polyoxyethylene polyoxypropylene oleate, polyoxypropylene mannitol oleate, polyoxyethylene lanolin, polyoxyethylene lanolin Oxyethylene fatty acid esters, polyoxyethylene polyoxypropylene block copolymers, or non-ionic surfactants modified by fats and oils. Polyoxyethylene fatty acid esters such as polyoxyethylene oleate. The nonionic surface active agent for the modification of fats and oils is, for example, castor oil polyoxyethylene ether.

>Penetrant>

Based on the total amount of the anti-foam composition being 100 wt%, the content of the penetrant is 5 wt% to 30 wt%. The penetrating agent can be used alone or in a mixture of multiple types, and the penetrating agent is for example, but not limited to, ester nonionic surfactants. When the anti-foam composition of the present invention is used to form an aqueous solution of polyvinyl alcohol (containing polyvinyl alcohol with a degree of alcoholysis of 80 to 90 mol%), the ester nonionic surfactant can interact with the vinyl acetate segment of polyvinyl alcohol. There is better affinity between. The ester nonionic surfactant is R ¹ -C(O)OR ² , wherein R ¹ and R ² are alkyl groups, alkanol ether groups, -X ² -C ₆ H ₅ , phenyl groups or phenol groups, And the total carbon number ranges from 3 to 30, where X ² represents an alkylene group. The alkyl group (i.e., saturated hydrocarbon group) is a straight-chain alkyl group or a branched-chain alkyl group. The alkanol ether group (that is, the saturated alcohol ether group) is -X ³ -(OX ⁴ ) _n -H, where X ³ and X ⁴ represent an alkylene group, and n represents 1 or more. In order to make the anti-foam composition have better stability and more effectively discharge the air in the foam, preferably, ^{at least one of R 1} and R ² has a carbon number of 4 or less. The penetrant can be used alone or in a mixture of multiple types, and the penetrant is for example, but not limited to, ethyl acetate, propyl acetate, butyl acetate, pentyl acetate, benzyl acetate, ethylene glycol ethyl ether acetate, diethylene two Alcohol ethyl ether acetate, ethylene glycol butyl ether acetate, propylene glycol methyl ether acetate, dipropylene glycol methyl ether acetate, laureth methyl ether, laureth propyl, methyl myristate, propyl myristate, Isopropyl myristate, methyl palmitate, propyl palmitate, propyl octadecanoate, butyl octadecanoate, or isomers of the aforementioned ingredients, etc.

The anti-foaming composition of the present invention also contains water. Based on the total amount of the anti-foam composition being 100 wt%, the content of the water is greater than 0 wt% and less than 5 wt%.

>Preparation method of anti-foam composition>

The preparation method of the anti-foam composition comprises mixing the anti-foaming and defoaming agent and the penetrating agent to form a mixture; mixing the anti-foaming agent with the mixture. The mixing method is carried out under stirring. The stirring speed is not particularly limited, as long as the resulting mixture can be in a uniform state and the foam inhibitor can be uniformly mixed with the mixture. In some embodiments of the present invention, the stirring speed is 100 rpm to 3000 rpm.

Since the viscosity of the anti-foaming agent is higher than that of other components, in order to avoid the inconvenience in operation due to the high viscosity during the process of preparing the anti-foam composition, in the preparation method of the anti-foam composition of the present invention, The timing of adding the foaming agent is added after the other ingredients are mixed, so that the preparation method of the anti-foaming composition of the present invention has the advantage of convenient operation. Further, it also includes adding a dispersing wetting agent to form the mixture.

When the anti-foam composition of the present invention is used to form an aqueous solution of polyvinyl alcohol at 80°C to 90°C, the amount of the anti-foam composition of the present invention ranges from 0.05 parts by weight to 100 parts by weight based on the total amount of polyvinyl alcohol. 3 parts by weight.

The present invention will be further described with the following examples, but it should be understood that these examples are for illustrative purposes only and should not be construed as limitations to the implementation of the present invention.

Example 1

Heat 10 kg of hard palm oil (as a defoaming and defoaming agent) at 70°C to dissolve, then pour it into a container with a high-speed mixer, and add 5 kg of dispersing wetting agent in sequence [brand: Croda; Model: Span™ 85; Ingredients: sorbitan trioleate] and 5 kg of diethylene glycol ethyl ether acetate (as penetrant), then at a temperature of about 25°C and a rotation speed of 1000 Stir and disperse for 5 minutes under the condition of rpm to form a mixture. Then, 80 kg of isotridecyl alcohol polyoxyethylene ether [Ethylene oxide (EO) number is 3, as a foam inhibitor] is added to the mixture And stir and disperse for 15 minutes at a temperature of about 25°C and a rotation speed of 1000 rpm.

Examples 2 to 21

The methods of Examples 2 to 21 are similar to the method of Example 1, except that the types of defoaming and defoaming agents, dispersing wetting agents, penetrants and antifoaming agents are changed. Refer to Table 1 and Table 2.

Comparative examples 1 to 10

The method of Comparative Examples 1 to 10 is similar to that of Example 1, except that the types of defoaming and defoaming agents, dispersing wetting agents, penetrating agents and foam suppressing agents are changed, see Table 3.

Application example 1

Pour 0.024 kg of the anti-foam composition of Example 1, 96 kg of water and 4 kg of polyvinyl alcohol (purchased from Changchun Chemical Industry; model: PVA-BP17) into a dissolving kettle in a heating device, and rotate Stir at 60 rpm and heat to 85° C., maintain the temperature and continue stirring until the polyvinyl alcohol is completely dissolved, and then maintain the temperature and perform stirring at a rotation speed of 30 rpm for 30 minutes.

Application examples 2 to 21

The application examples 2 to 21 are similar to the application example 1, except that the anti-foam composition is changed, see Table 4.

Comparative application example 1

Pour 96 kg of water and 4 kg of polyvinyl alcohol (brand: Changchun Chemical; model: PVA-BP17) into a dissolving kettle in a heating device, stir at 60 rpm and heat to 85 The temperature was maintained at this temperature and stirring was continued until the polyvinyl alcohol was completely dissolved, and then the temperature was maintained at this temperature and stirring was performed for 30 minutes at a rotation speed of 30 rpm.

Comparative application examples 2 to 11

The comparative application examples 2 to 11 are similar to the application example 1, except that the anti-foam composition is changed, see Table 4.

Evaluation item

Foam volume (unit: cm ³ ): Put 100 grams of application examples 1 to 21 and comparative application examples 1 to 11 at 85°C in a glass cup with a diameter of 6 cm and maintain it at 85°C, then measure the foam Height and calculate the initial foam volume (ie 3×3×π×foam height), then use a 300 mesh screen to perform up and down disturbances, one up and down, a total of 30 times, and then let stand for 3 minutes and 5 minutes Then, measure the foam height and calculate the standing foam volume (ie 3×3×π×foam height).

Stability: Visually observe the appearance of application examples 1 to 21 and comparative application examples 1 to 11. ○: indicates that there is no delamination and no precipitate; ×: delamination; △: there is a precipitate.

Table 1 Unit: kg Example 1 2 3 4 5 6 7 8 9 10 Anti-foam composition Defoaming and defoaming agent Hard palm oil 10 10 18 10 0 0 0 0 0 0 Vaseline 0 0 0 0 15 20 20 0 0 0 Polyoxyethylene polyoxypropylene random polyether (molecular weight 3000) 0 0 0 0 0 0 0 40 40 40 White oil 0 0 0 0 0 0 0 0 0 0 mineral oil 0 0 0 0 0 0 0 0 0 0 Pentaerythritol tetraisostearate 0 0 0 0 0 0 0 0 0 0 Suds suppressor Isomerized tridecanol polyoxyethylene ether (EO number is 3, cloud point is 40℃) 80 0 0 0 60 0 0 40 0 0 Isomerized tridecanol polyoxyethylene ether (EO number is 5, cloud point is 62℃) 0 80 0 0 0 0 0 0 0 0 Polyoxyethylene polyoxypropylene block polyether (molecular weight is 2500, cloud point is 23℃) 0 0 50 0 0 55 0 0 40 0 Tetradecyl alcohol polyoxyethylene polyoxypropylene block polyether (molecular weight is 1000, cloud point is 37℃) 0 0 0 70 0 0 60 0 0 40 Dispersing wetting agent Sorbitan trioleate (HBL is 1.8) 5 5 10 5 5 5 5 5 5 5 Penetrant Diethylene glycol ethyl ether acetate 5 5 0 15 0 0 15 0 0 0 Isopropyl myristate 0 0 twenty two 0 0 0 0 15 15 15 Ethylene glycol butyl ether acetate 0 0 0 0 20 20 0 0 0 0 Butyl octadecanoate 0 0 0 0 0 0 0 0 0 0

Table 2 Unit: kg Example 11 12 13 14 15 16 17 18 19 20 twenty one Anti-foam composition Defoaming and defoaming agent Hard palm oil 0 0 0 0 0 0 0 0 0 0 0 Vaseline 0 0 0 0 0 0 0 0 0 0 0 Polyoxyethylene polyoxypropylene random polyether (molecular weight 3000) 0 0 0 0 0 0 0 0 20 40 0 White oil 10 20 25 40 5 20 8 5 0 0 0 mineral oil 0 0 0 0 0 0 12 5 0 0 0 Pentaerythritol tetraisostearate 0 0 0 0 0 0 0 0 0 0 15 Suds suppressor Isomerized tridecanol polyoxyethylene ether (EO number is 3, cloud point is 40℃) 80 0 0 0 0 0 0 0 0 0 0 Isomerized tridecanol polyoxyethylene ether (EO number is 5, cloud point is 62℃) 0 45 0 0 0 0 0 0 0 0 0 Polyoxyethylene polyoxypropylene block polyether (molecular weight is 2500, cloud point is 23℃) 0 0 55 40 0 0 60 80 0 0 0 Tetradecyl alcohol polyoxyethylene polyoxypropylene block polyether (molecular weight is 1000, cloud point is 37℃) 0 0 0 0 70 55 0 0 50 20 65 Dispersing wetting agent Sorbitan trioleate (HBL is 1.8) 5 25 5 5 5 5 0 5 15 10 5 Penetrant Diethylene glycol ethyl ether acetate 5 0 0 0 0 0 0 0 0 0 0 Isopropyl myristate 0 10 15 15 0 0 0 0 0 0 15 Ethylene glycol butyl ether acetate 0 0 0 0 20 20 20 0 0 0 0 Butyl octadecanoate 0 0 0 0 0 0 0 5 15 30 0

table 3 Unit: kg Comparative example 1 2 3 4 5 6 7 8 9 10 Anti-foam composition Defoaming and defoaming agent Pentaerythritol tetraisostearate 100 40 40 1 50 40 5 30 40 30 Suds suppressor Tetradecyl alcohol polyoxyethylene polyoxypropylene block polyether (molecular weight is 1000, cloud point is 37℃) 0 60 40 74 40 5 85 30 40 30 Dispersing wetting agent Sorbitan trioleate (HBL is 1.8) 0 0 20 5 5 25 5 30 19 5 Penetrant Isopropyl myristate 0 0 0 20 5 30 5 10 1 35

Table 4 Example Comparative example Foam volume stability initial Let stand for 3 minutes Let stand for 5 minutes Application example 1 1 - 48.0 39.6 33.9 ○ 2 2 - 84.8 79.1 70.7 ○ 3 3 - 113.0 101.7 70.7 ○ 4 4 - 65.0 42.4 33.9 ○ 5 5 - 50.9 42.4 36.7 ○ 6 6 - 56.5 50.9 36.7 ○ 7 7 - 42.4 33.9 22.6 ○ 8 8 - 28.3 17.0 14.1 ○ 9 9 - 39.6 36.7 28.3 ○ 10 10 - 33.9 28.3 19.8 ○ 11 11 - 33.9 28.3 25.4 ○ 12 12 - 50.9 50.9 48.0 ○ 13 13 - 39.6 36.7 25.4 ○ 14 14 - 70.7 59.3 31.1 ○ 15 15 - 28.3 22.6 5.7 ○ 16 16 - 25.4 17.0 5.7 ○ 17 17 - 31.1 22.6 17.0 ○ 18 18 - 39.6 19.8 14.1 ○ 19 19 - 28.3 25.4 8.5 ○ 20 20 - 39.6 22.6 14.1 ○ twenty one twenty one - 59.3 36.7 14.1 ○ Comparative application example 1 - - 339.1 254.3 197.8 ○ 2 - 1 325.0 243.0 183.7 ○ 3 - 2 67.8 42.4 17.0 X 4 - 3 79.1 50.9 22.6 X 5 - 4 56.5 39.6 22.6 ○ 6 - 5 70.7 42.4 17.0 X 7 - 6 149.8 101.7 59.3 X 8 - 7 56.5 36.7 22.6 ○ 9 - 8 84.8 59.3 31.1 X 10 - 9 79.1 48.0 22.6 X 11 - 10 84.8 39.6 11.3 ○

From the experimental results of Application Examples 1 to 21, Comparative Application Examples 1 to 2 and Comparative Application Example 11 in Table 4, it can be seen that the anti-foam composition of the present invention can indeed be used to form a polyvinyl alcohol aqueous solution at 80°C to 90°C. Has the effect of reducing foam volume. Furthermore, from the experimental results of the application example 21 and the comparative application examples 3, 4, 6, 7, 9 and 10, it can be seen that the anti-foam composition of the present invention is used to form an aqueous solution of polyvinyl alcohol at a temperature of 80°C to 90°C. In addition to the effect of reducing foam volume, there will be no problems of delamination or precipitation and stability. In addition, from the experimental results of the application example 21 and the comparative application examples 5 and 8, although the initial foam volume of the anti-foam composition of the present invention is slightly larger than the anti-foam composition of the comparative application examples 5 and 8, it is As the storage time increases, the foam disappearing speed of the anti-foam composition of the present invention is superior to that of the anti-foam compositions of Comparative Application Examples 5 and 8.

In summary, the anti-foam composition of the present invention can inhibit (reduce) foam formation, eliminate (reduce) the generated foam, reduce foam volume, and increase The foam disappears speed, and the effect of increasing the stability under storage (for example, no delamination or no precipitation, etc.), so it can indeed achieve the purpose of the invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to Within the scope covered by the patent of the present invention.

none.

Claims (10)

An anti-foaming composition comprising: 5wt% to 40wt% defoaming and defoaming agent; 20wt% to 80wt% foam inhibitor; 0wt% to 25wt% dispersive wetting agent; and 5wt% to 30wt% penetrant. The anti-foaming composition according to claim 1, wherein the anti-foaming and defoaming agent includes at least one substance composed of the following groups: fatty acid ester non-ionic surfactant, non-water-soluble polyether, white oil , Horse oil, vegetable oil, wax, petrolatum, mineral oil, isomers of the above components, and modified products of the above components. The anti-foam composition according to claim 2, wherein the fatty acid ester nonionic surfactant includes at least one substance composed of the following groups: triglyceryl monostearate, hexaglyceryl distearate Fatty acid ester, ten polyglycerol hexastearate, triglycerol monooleate, triglyceride dilaurate, ethylene glycol distearate, propylene glycol monostearate, propylene glycol monooleate , Propylene glycol monolaurate, glyceryl monolaurate, glyceryl dilaurate, glyceryl monostearate, glyceryl distearate, glyceryl monooleate, pentaerythritol monostearate, pentaerythritol distearate Esters, pentaerythritol tristearate, pentaerythritol tetraisostearate, pentaerythritol oleate, pentaerythritol dioleate, pentaerythritol trioleate, pentaerythritol tetraoleate, isononyl isononanoate, octyl Dodecyl myristate, tetradecyl myristate, hexadecyl hexadecanoate, block laurate, block stearate, block oleate, comb graft fatty acid ester, and Star-shaped grafted fatty acid esters. The anti-foam composition according to claim 1, wherein the anti-foaming agent has at least one condition consisting of the following group: the cloud point range is below 80°C, including saturated alkanols with a total carbon number of 10 or more Saturated alkanol polyether of the group, or HO-(C ₂ H ₄ O) _x -(C ₃ H ₆ O) _y -(C ₂ H ₄ O) _z -H and x+y+z is 10 or more and The molecular weight is greater than 500. The anti-foam composition according to claim 4, wherein the foam suppressor comprises at least one substance consisting of the following groups: fatty alcohol polyoxyethylene ether, fatty alcohol polyoxyethylene polyoxypropylene block polyether, Water-soluble polyoxyethylene polyoxypropylene block polyether, and isomers of the above components. The anti-foam composition according to claim 1, wherein the dispersive wetting agent is a nonionic surfactant with a hydrophilic-lipophilic balance value ranging from 1 to 9, and the non-ionic surfactant includes at least one of the following groups The group consists of substances: ethylene glycol monooleate, polyoxypropylene stearate, sorbitan laurate, sorbitol monooleate poly, sorbitan monooleate, loss Sorbitan trioleate, polyoxyethylene polyoxypropylene oleate, polyoxypropylene mannitol oleate, polyoxyethylene lanolin, polyoxyethylene fatty acid ester, polyoxyethylene polyoxypropylene block copolymer It is a non-ionic surfactant for modifying oil and fat. The anti-foam composition according to claim 1, wherein the penetrant includes an ester nonionic surfactant, and the ester nonionic surfactant is R ¹ -C(O)OR ² , wherein R ¹ And R ² is an alkyl group, an alkanol ether group, -X ² -C ₆ H ₅ , a phenyl group or a phenol group, and the total carbon number ranges from 3 to 30, where X ² represents an alkylene group. The anti-foam composition according to claim 7, wherein the penetrant includes at least one substance composed of the following group: ethyl acetate, propyl acetate, butyl acetate, pentyl acetate, benzyl acetate, ethyl acetate Glycol ethyl ether acetate, diethylene glycol ethyl ether acetate, ethylene glycol butyl ether acetate, propylene glycol methyl ether acetate, laureth methyl ester, laureth propyl ester, methyl myristate, propyl myristate Esters, isopropyl myristate, methyl palmitate, propyl palmitate, propyl octadecanoate, butyl octadecanoate, and isomers of the above components. A preparation method of an anti-foam composition comprises: mixing a defoaming and defoaming agent and a penetrating agent to form a mixture; and mixing the foam suppressing agent with the mixture. The preparation method of the anti-foam composition according to claim 9, wherein the mixing is performed by stirring, and the stirring speed is 100 rpm to 3000 rpm.