CN112726236B

CN112726236B - Neutralization soaping agent

Info

Publication number: CN112726236B
Application number: CN202011581370.0A
Authority: CN
Inventors: 沈建亮; 施可可; 张金龙
Original assignee: Shaoxing Haicheng Chemical Co ltd
Current assignee: Shaoxing Haicheng Chemical Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2022-06-17
Anticipated expiration: 2040-12-28
Also published as: CN112726236A

Abstract

The application relates to the field of textile printing and dyeing auxiliaries, and particularly discloses a neutralization soaping agent which comprises the following components in parts by mass: 15-20 parts of an acrylic polymer; 5-10 parts of polyethyleneimine ethoxy compound; 3-6 parts of polyacrylic acid; 5-10 parts of polymaleic anhydride; 2-5 parts of an anti-coagulation auxiliary agent; make up to 100 parts with water. The soaping agent in the application has good effects of removing floating color and preventing rewetting.

Description

Neutralization soaping agent

Technical Field

The application relates to the field of textile printing and dyeing auxiliaries, in particular to a neutralization soaping agent.

Background

During the dyeing process, a plurality of undyed and fixed dyes, hydrolyzed dyes and other chemical auxiliary agents exist in the dye liquor, and after the dyeing is finished, the impurities must be eluted to improve the color fastness and the brilliance of the fabrics. The general washing process comprises water washing and soaping, wherein the soaping is a processing technology for cleaning dye which is not fixed on the surface of the fabric, used dyeing assistant, printing paste and the like under certain conditions by using a soaping agent. In the soaping process, the problems of incomplete washing, back sticking and the like exist, so that multiple washing and soaping processes are required to achieve the required washing effect.

The acrylic polymer which is common in soaping agent is widely applied to various dye factories, and the synthesis methods of the product are roughly divided into the following methods:

the polymerization of acrylic acid and monomers such as maleic anhydride, hydroxymethyl acrylic acid, hydroxyethyl acrylic acid, acrylamide and the like is generally carried out by uniformly mixing the monomers in a water phase and then dropping or adding an initiator at one time for polymerization, or dropping acrylic acid and the initiator respectively into a system containing a monomer solution for polymerization.

For example, the chinese patent with the publication number CN1148391C discloses an acrylic acid-maleic acid copolymer, its preparation method and use.

The monomer is easy to polymerize by itself or copolymerize with acrylic acid monomer, which results in different structures and sizes of prepared polymers, and poor batch due to water quality or dropping speed, and finally causes poor batch in dye factory application.

Secondly, the polymerization of acrylic acid and monomers such as butyl acrylate, styrene, vinyl acetate and the like, for example, the Chinese patent with the publication number of CN104086697B discloses an acrylic polymer prepared under the low temperature condition and a preparation method thereof. The polymerization of the monomer and acrylic acid is generally carried out by adopting a solvent method, and the polymerization effect is achieved by dripping an initiator in a solvent system, but the solvent always has great pollution to the environment.

Emulsifying and homogenizing the ester monomer into microemulsion through a surfactant, and then dripping an initiator and an acrylic monomer simultaneously for polymerization.

For example, chinese patent publication No. CN104448107B discloses an alkali soluble acrylate polymer composition and a method for preparing the same.

Although the structure and molecular weight of the polymer prepared by the method can be relatively effectively controlled, most reports of the polymer are presented in a functional finishing agent, the reports in pretreatment and dyeing auxiliary agents are very few, and most of the polymer prepared by the method is in a white emulsion state.

In view of the above-mentioned related technologies, the inventors believe that the above-mentioned functional monomers are mostly reported for functional finishing, and if used as a soaping agent, the ability of removing floating color and preventing back staining still needs to be improved.

Disclosure of Invention

To improve the ability of a soaping agent to remove bloom and prevent backstaining, the present application provides a neutralizing soaping agent.

A neutralization soaping agent comprises the following components in parts by mass:

make up to 100 parts with water.

By adopting the technical scheme, the acrylic polymer has better chelating and dispersing capacity, and the polyethyleneimine ethoxylate also has good dispersing effect, but the inventor finds that the acrylic polymer and the polyethyleneimine ethoxylate can generate additional synergistic effect when mixed for use, and further highlights the effect of suspension and dispersion so as to remove floating color, impurities and the like on the fabric. And the anticoagulant additive is matched in a certain proportion, so that impurities adhered to the fabric are almost completely dispersed in the washing liquor and hardly re-stained on the surface of the fabric, and unexpected effects of removing floating color and re-staining are achieved through compounding of various substances. The polymaleic anhydride and the polyacrylic acid react under certain conditions to generate substances with good chelation, so that the influence of calcium and magnesium ions in hard water on the soaping effect is greatly reduced.

The inventor finds that the soaping agent has excellent effects of removing floating color and returning stain, so that the soaping agent has excellent effects after one-time soaping, does not need to carry out multiple soaping and water washing, reduces resource waste and pollution discharge caused by multiple soaping and water washing processes, and achieves the effects of saving energy and reducing emission.

In addition, the acidic polyacrylic acid and polymaleic anhydride are not only excellent chelating agents and dispersing agents, but also can replace the acid-neutralized alkaline acrylic polymer, so that the pH value of the finally prepared soaping agent is controlled within the application requirement, and the pH value of the soaping agent has larger influence on the chelating effect and the dispersing effect.

When the soaping agent is used for soaping the fabric, not only can loose colors, impurities and the like on the surface of the fabric be washed, but also the pH value of the fabric can be neutralized, so that the pH value can also reach the relevant standard when the fabric is subjected to soaping and cropping. That is, the neutralized soaping agent in the present application also has the effect of a pH neutralizer.

Optionally, the acrylic polymer is prepared from the following components in parts by mass:

by adopting the technical scheme, the components of the acrylic ester polymer are specifically selected and limited, so that the prepared acrylic ester polymer has better chelating property and dispersing property.

Optionally, the dispersing aid comprises the following components in percentage by mass:

1-2% of an emulsifier;

3-4% of slightly soluble magnesium salt or insoluble magnesium salt;

the balance of water.

By adopting the technical scheme, the acrylic polymer needs to be subjected to high-speed shearing, dispersion and emulsification in the preparation process, and a large amount of collision is generated in the dispersion process by adding the slightly soluble magnesium salt or the insoluble magnesium salt, so that the defoaming effect can be achieved, and emulsion particles can be further refined through collision, so that a more uniformly dispersed dispersion system can be obtained.

Further, as the reaction proceeds, an acrylic polymer is gradually generated, and the acrylic polymer can chelate a slightly soluble magnesium salt or an insoluble magnesium salt as a good chelating agent. The appearance of the reaction system becomes more and more transparent along with the reaction, and blue light gradually appears, and when the blue light disappears, the reaction can be considered to reach the end point. Therefore, the addition of the slightly soluble magnesium salt or the insoluble magnesium salt can not only assist the dispersion and emulsification, but also indicate the reaction progress.

Optionally, the emulsifier is sodium cumenesulfonate and isomeric dodecyl alcohol polyoxyethylene ether in a mass ratio of 1: the mixture of (1-2).

By adopting the technical scheme, compared with common emulsifiers of sodium alkyl benzene sulfonate and sodium fatty alcohol polyether sulfate, the sodium cumene sulfonate and the isomeric dodecyl alcohol polyoxyethylene ether belong to low-foam emulsifiers, and are cooperated with slightly soluble magnesium salts or insoluble magnesium salts, so that a polymer semi-finished product in the soaping agent preparation process is low-foam or even non-foam, and the influence of foam on the synthesis process is greatly reduced. In addition, the low-foam synthesis process can reduce the interference on the determination of the reaction endpoint of the acrylic polymer.

Optionally, the sparingly soluble magnesium salt or the insoluble magnesium salt is one or more of magnesium carbonate, magnesium hydroxide, magnesium phosphate and magnesium sulfite.

By adopting the technical scheme, the end point of the synthesis process can be observed more clearly by adding the slightly soluble magnesium salt or the insoluble magnesium salt, so that the end point of the reaction has a more uniform standard, and the controllable end point of the reaction means that the molecular weight reproducibility of the polymer is high, and a certain narrow distribution is realized, thereby improving the reproducibility and the stability of the acrylic polymer.

Optionally, the acrylate monomer is one or more of n-butyl acrylate, isobutyl acrylate, tert-butyl acrylate, 2-ethylhexyl acrylate, n-octyl acrylate and decyl acrylate.

Optionally, the anticoagulant polymer additive is polyvinylpyrrolidone and fatty alcohol-polyoxyethylene ether silane according to a mass ratio of 1: (0.5-1).

By adopting the technical scheme, the polyvinylpyrrolidone and the fatty alcohol-polyoxyethylene ether silane both have good dispersion effects, so that the floating color and impurities eluted during soaping are better dispersed in the washing liquor, and the problem of back staining is not easy to occur.

In addition, the fatty alcohol-polyoxyethylene ether silane and the isomeric dodecyl alcohol polyoxyethylene ether added in the emulsifier can form a coating on the dye, so that a dye aggregate containing a micelle structure is formed, and the polyvinylpyrrolidone has the functions of protecting colloid and complexing the dye, so that the solubility of the dye in water is greatly improved. And the aggregated dye has large particle size and slow diffusion speed and is more difficult to be re-stained on fabrics. That is, the two components of the anti-coagulant aid not only have the effect of synergistically reducing the rewet by themselves, but also have the effect of synergistically reducing the rewet with the components of the emulsifier.

Optionally, the preparation process of the acrylic polymer comprises the following process steps:

s1: adding water into an emulsifier and a slightly soluble magnesium salt or an insoluble magnesium salt according to the mass ratio, and stirring and dispersing to obtain a dispersion;

s2: and (2) according to the mass parts, putting the acrylate monomer and the maleic anhydride into the dispersion obtained in the step S1, stirring and dispersing, heating to 80-90 ℃, dropwise adding an acrylate aqueous solution and hydrogen peroxide at the temperature, keeping the temperature for 2 hours after dropwise adding is finished, and cooling to room temperature to obtain the acrylic polymer.

By adopting the technical scheme, the process is specially selected, and the slightly soluble magnesium salt or the insoluble magnesium salt is added, so that the synthesis process can be monitored, and the reaction end point can be conveniently judged. And the molecular weight distribution of the acrylic polymer can be more effectively controlled in a narrower range due to the observable and monitorable reaction endpoint, so that the stability and the reproducibility of the finished product are greatly improved.

Optionally, in step S2, the temperature increase rate is 4-5 ℃/min.

By adopting the technical scheme, the temperature rising speed in the step S2 is very critical, and if the temperature rising speed is too low, the whole reaction time is too long; if the temperature rise rate is too fast, the problem of non-uniform temperature rise is easily caused because the thermal conductivity of the dispersion is not high. The temperature rise speed is controlled within the range of 4-5 ℃/min, so that the problem that the subsequent polymer uniformity is poor due to accelerated movement caused by nonuniform temperature rise due to excessively high temperature rise speed of the dispersion before polymerization can be effectively reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by specifically selecting and limiting the composition and the proportion of the soaping agent, a prominent suspension dispersion effect can be additionally obtained through the synergistic effect of the acrylic polymer and the polyethyleneimine ethoxy compound so as to improve the problem of rewetting; the added polymaleic anhydride and polyacrylic acid cooperate to soften the hardness of the washing liquid and adjust the pH value of the acrylic polymer so as to further improve the soaping effect;

2. by adding a slightly soluble magnesium salt or an insoluble magnesium salt and cooperating with a low-foaming emulsifier, emulsion particles are refined by physical collision in the preparation process, and the defoaming effect is further improved; furthermore, the slightly soluble magnesium salt or the insoluble magnesium salt is chelated and dissolved by the reaction product with chelating ability along with the reaction, so as to indicate the reaction progress and enable the reaction end point to be more uniform and controllable;

3. by selecting the specific anti-coagulation auxiliary agent, the effect of reducing back staining can be generated in a synergistic manner, and the effect of reducing back staining can be further generated in a synergistic manner with the emulsifier, so that the single washing effect is greatly improved.

Detailed Description

The raw materials of the components in the application are all normally sold in the market except for special labels.

Preparation of acrylic ester Polymer

Preparation example 1

The acrylic ester polymer is prepared from the following components in parts by mass:

the aqueous acrylate solution is an aqueous sodium acrylate solution, and the preparation method is to neutralize acrylic acid with an aqueous sodium hydroxide (32%) solution to a pH of 8. Phenylpropionic acid is 3-phenylpropionic acid and is purchased from Nantong Tianxiang bioengineering, Inc.

The dispersing auxiliary agent is JFC-2 dispersing agent of Jiangsu Haian petrochemical engineering.

The acrylate monomer is n-butyl acrylate and is purchased from Nantong Runfeng petrochemical company Limited.

Maleic anhydride was purchased from southbound runfeng petrochemical company, ltd.

The preparation process of the acrylic polymer specifically comprises the following steps:

according to the mass parts, the acrylate monomer and the maleic anhydride are put into a dispersing auxiliary agent to be stirred and dispersed, the temperature of the system is raised to 80 ℃ at the temperature raising speed of 4 ℃/min, the sodium acrylate solution and the hydrogen peroxide are dripped at the temperature, the temperature is kept for 2 hours after the dripping is finished, and the acrylic polymer is obtained after the temperature is reduced to the room temperature.

Preparation example 2

The difference between the preparation example 2 and the preparation example 1 is that a dispersing aid is not a conventional commercially available JFC-2 dispersant, and the dispersing aid comprises the following components in parts by mass:

2kg of emulsifier;

5kg of slightly soluble magnesium salt or insoluble magnesium salt;

133kg of water.

Wherein the emulsifier is sodium cumenesulfonate and is purchased from Chuangen chemical technology Co., Ltd, Guangzhou city; and the slightly soluble magnesium salt or the insoluble magnesium salt is magnesium hydroxide.

s2: and (2) according to the mass parts, putting the acrylate monomer and maleic anhydride into the dispersion obtained in the step S1, stirring and dispersing, heating the system to 80 ℃ at the heating rate of 4 ℃/min, dropwise adding a sodium acrylate solution and hydrogen peroxide at the temperature, preserving heat for 2 hours after dropwise adding is finished, and cooling to room temperature to obtain the acrylic polymer.

Preparation example 3

The difference between the preparation example 3 and the preparation example 2 is that in the dispersing aid, the emulsifier is a mixture of sodium cumenesulfonate and isomeric dodecyl polyoxyethylene ether in equal mass ratio. Isomeric dodecyl alcohol polyoxyethylene ether is purchased from Jiangsu Haian petrochemical.

Preparation example 4

The difference between the preparation example 4 and the preparation example 2 is that in the dispersing auxiliary agent, the emulsifier is composed of sodium cumenesulfonate and isomeric dodecyl polyoxyethylene ether according to the mass ratio of 1: 2, or a mixture thereof.

Preparation example 5

The difference between preparation example 5 and preparation example 3 is that the slightly soluble magnesium salt or the insoluble magnesium salt is magnesium carbonate and magnesium phosphate at an equal mass ratio.

Preparation example 6

Preparation example 6 differs from preparation example 3 in that the sparingly soluble magnesium salt or insoluble magnesium salt is a mixture of magnesium carbonate and magnesium sulfite in an equal mass ratio.

Preparation example 7

Preparation example 7 is different from preparation example 3 in that the acrylate-based monomer is a mixture of 2-ethylhexyl acrylate and decyl acrylate in an equal mass ratio. 2-ethylhexyl acrylate was purchased from jinan condemned new materials, inc; decyl acrylate was purchased from the Shanghai Michell chemical technology, Inc.

Preparation example 8

Preparation 8 differs from preparation 3 in that the acrylate-based monomer is a mixture of t-butyl acrylate, isobutyl acrylate and n-octyl acrylate in equal mass ratios. Isobutyl acrylate was purchased from southern Tongheng petrochemical company, ltd; n-octyl acrylate and t-butyl acrylate were purchased from Jinan Polales chemical Limited.

The difference between the preparation examples 9-13 and the preparation example 3 is that the ratio of each substance in the acrylic polymer and the preparation process are as follows:

preparation example 14

Preparation example 14 is different from preparation example 3 in that the addition amount of the dispersion aid is 130kg, and the amounts of the respective components in the dispersion aid are adaptively adjusted in terms of mass percentage.

Preparation example 15

Preparation example 15 differs from preparation example 3 in that the addition amount of the dispersion aid was 150kg, and the amount of each component in the dispersion aid was adaptively adjusted in terms of mass percentage.

Examples

The embodiment of the application discloses a neutralization soaping agent.

Example 1

The neutralization soaping agent is prepared by compounding the following components in parts by mass:

wherein the acrylate polymer is available from Dow, USA and is Aculyn 33.

Wherein the polyethyleneimine ethoxylate is Sokalan HP 20 from Basff.

Wherein the polyacrylic acid is available from Shandongtai and Water treatment science and technology Co., Ltd and has a model number of TH-1100.

Wherein the polymaleic anhydride is available from Shandongtai and Water treatment science and technology Co., Ltd and has a relative molecular weight of 600.

Wherein the anticoagulant polymer auxiliary agent is fatty alcohol-polyoxyethylene ether silane and is purchased from Shanghai Tiantan auxiliary agent Co., Ltd, and the type is WA.

Example 2 differs from example 1 in that the acrylic ester polymer prepared in preparation example 1 was used.

Example 3 is different from example 1 in that the acrylic polymer prepared in preparation example 2 is used as the acrylic polymer.

Example 4 is different from example 1 in that the acrylic polymer prepared in preparation example 3 is used as the acrylic polymer.

Example 5 is different from example 1 in that the acrylic polymer prepared in preparation example 4 is used as the acrylic polymer.

Example 6 is different from example 1 in that the acrylic polymer prepared in preparation example 7 is used as the acrylic polymer.

Example 7 is different from example 1 in that the acrylic polymer prepared in preparation example 9 is used as the acrylic polymer.

Example 8 is different from example 1 in that the acrylic polymer prepared in production example 14 is used as the acrylic polymer.

Example 9 differs from example 4 in that the anticoagulation agent is a mixture of polyvinylpyrrolidone and fatty alcohol-polyoxyethylene ether silane in the same mass ratio. The polyvinylpyrrolidone is K17 model produced by Shanghai Limited company of Bike New Material science and technology; the fatty alcohol-polyoxyethylene ether silane is WA type of Shanghai Tiantan auxiliary agent.

Example 10 differs from example 9 in that the anticoagulation polymerization auxiliary agent is polyvinylpyrrolidone and fatty alcohol-polyoxyethylene ether silane in a mass ratio of 1: 0.5 mixing the resulting mixture.

Examples 11 to 14 differ from example 9 in that the components are in the following table in parts by weight:

comparative example

Comparative example 1

Comparative example 1 is different from example 1 in that acrylic acid-maleic anhydride copolymer was prepared as a soaping agent using an equal mass of water instead of acrylic acid ester polymer.

Comparative example 2

Comparative example 2 differs from example 1 in that an equal mass of water was used instead of the anti-coagulation aid to prepare a soaping agent.

Comparative example 3

Comparative example 3 is a low-foam soaping agent type WQ-20 from shaxing duffing textile auxiliaries ltd.

Performance testing

1. Soaping color change stage number test method

1.1 prepare 200mL of 20g/L soaping working solution.

1.2 taking 10G of 5 pieces of cotton fabric dyed by reactive turquoise blue KN-G, soaking the cotton fabric in soaping working solution at 50 ℃ for 10s, and then carrying out liquor mangling on a padder, wherein the mangle residual rate is 80%.

1.3 washing the padded fabric with water at a bath ratio of 1: washing with hot water at 30 and 80 deg.C for 5 min. Washing with water at room temperature for 5 min. Dehydrating, and oven drying at 100 deg.C for 5 min. Cooling, humidifying for 4h under the condition specified by GB/T65292008, and observing the fabric color change conditions before and after soaping, wherein the minimum color change is selected as grade 1, and the maximum color change is selected as grade 5.

1.4 carrying out repeated soaping tests on the same cotton fabric for different times, judging the soaping effect of the soaping agent, and judging the influence of the soaping times on the soaping performance. The ability to remove the floating color was judged according to the depth of the foot water after each soaping, with the foot water being the lightest grade 1 and the foot water being the darkest grade 5.

The test results are given in the following table:

2. staining resistance test

2.1 preparing 10g/L soaping agent solution for standby.

2.2 preparation of reactive hydrolytic dye: weighing 10G of reactive turquoise blue KN-G, placing the reactive turquoise blue KN-G in a dyeing cup, adding 185G of water, adding 3G of caustic soda, preserving the heat for 60min at 100 ℃, cooling, neutralizing with 0.1mol/L of dilute hydrochloric acid until the pH value is 7, and then fixing the volume to 500mL for later use.

2.3 adding 20g of soaping agent solution prepared in the step 2.1 into 5 dyeing cups respectively, then adding hydrolyzed dye solution prepared in the step 2.2 to enable the dye concentration to be 0.5% (owf), and finally adding water to 100g to prepare 2.0g/L soaping agent staining prevention test working solution.

2.4 taking 10G of the cotton fabric dyed by the reactive turquoise blue KN-G and fully and cleanly washed without flooding, and respectively putting the cotton fabric into dyeing cups filled with the soaping agent staining-proof test working solution to ensure that the bath ratio is 1: 10.

2.5 heating the working solution to 95 ℃ at the heating rate of 3.0 ℃/min, and preserving the heat at the temperature for 20min to carry out the anti-staining performance test.

2.6 fabrics after the anti-staining performance test were treated in a ratio of 1: washing with 30 bath at room temperature for 3 times, each time for 5min, dehydrating, and oven drying at 100 deg.C for 5 min. After cooling, the fabric was subjected to humidity conditioning for 4 hours under the conditions specified in GB/T65292008, and then the fabric color change conditions before and after soaping were observed and judged, wherein the minimum color change was rated as 1, and the maximum color change was rated as 5.

The test results are given in the following table

Conclusion

As can be seen by comparing the data of examples 1-4 and comparative examples 1-3 in the table above, the soaping agent prepared according to the scheme of the application has good one-time soaping effect and good back-staining effect.

Analysis of the data from examples 1-4 can yield:

1. the color difference of the fabric before and after one-time soaping is large, which indicates that a large amount of loose color is washed out by one-time soaping.

2. The color depth of the foot water after 1 time of soaping is large, the color depth of the foot water after 2 times of soaping is sharply reduced, and the color depth of the foot water after 5 times of soaping is not changed greatly, which shows that the loose color is basically cleaned when 1 time of soaping, the loose color which can be eluted when the subsequent soaping is naturally reduced, and the color of the foot water is lighter when the subsequent soaping is carried out.

3. The staining resistance test is mainly used for simulating whether the fully cleaned fabric can be back stained when placed in dye liquor with higher concentration, the more serious the back staining is, the larger the color difference before and after the fabric is, and the staining resistance test is used for inspecting the back staining capability of the soaping agent. It is clear that the rewet effect is not severe in any of examples 1-4.

Analysis of the data for comparative examples 1-3 can yield:

1. the color difference of the fabric before and after one-time soaping is larger, which shows that the soaping effect is also better.

2. The color depth of the foot water after 1 time of soaping is large, the color depth of the foot water after 2 times of soaping is still large, the color depth of the foot water after 5 times of soaping is obviously reduced, and whether the washing effect is poor or the anti-rewet effect is poor, the soaping agent in the comparative examples 1-3 needs to be subjected to multiple times of soaping to achieve the required cleanliness.

3. After the rewetting performance test in comparative examples 1-3, the color difference before and after the fabric is larger, which indicates that more dyes are rewetted on the fabric, and indicates that the anti-rewetting effect of the soaping agent in comparative examples 1-3 is more general.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A neutralizing soaping agent characterized by: the composition comprises the following components in parts by mass: 15-20 parts of an acrylic polymer; 5-10 parts of polyethyleneimine ethoxy compound; 3-6 parts of polyacrylic acid; 5-10 parts of polymaleic anhydride; 2-5 parts of an anti-coagulation auxiliary agent; supplementing 100 parts of water; the acrylic ester polymer is prepared from the following components in parts by mass: 450 portions of acrylic acid salt aqueous solution and 550 portions; 150 portions of dispersing auxiliary agent 130; 35-45 parts of hydrogen peroxide; 10-20 parts of acrylate monomers; 30-40 parts of maleic anhydride; the dispersing aid consists of the following components in percentage by mass: 1-2% of an emulsifier; 3-4% of slightly soluble magnesium salt or insoluble magnesium salt; the balance of water.

2. The neutralizing soaping agent according to claim 1, characterized in that: the emulsifier is sodium cumenesulfonate and isomeric dodecyl alcohol polyoxyethylene ether according to a mass ratio of 1: the mixture of (1-2).

3. The neutralizing soaping agent according to claim 1, characterized in that: the slightly soluble magnesium salt or the insoluble magnesium salt is one or more of magnesium carbonate, magnesium hydroxide, magnesium phosphate and magnesium sulfite.

4. The neutralizing soaping agent according to claim 1, characterized in that: the acrylate monomer is one or more of n-butyl acrylate, isobutyl acrylate, tert-butyl acrylate, 2-ethylhexyl acrylate, n-octyl acrylate and decyl acrylate.

5. The neutralizing soaping agent according to claim 1, characterized in that: the anticoagulant polymer auxiliary agent is prepared from polyvinylpyrrolidone and fatty alcohol-polyoxyethylene ether silane according to the mass ratio of 1: (0.5-1).

6. A neutralising soaping agent according to any one of claims 1-5, characterised in that: the preparation process of the acrylic polymer comprises the following process steps:

s2: and (2) according to the mass parts, putting the acrylate monomer and the maleic anhydride into the dispersion obtained in the step S1, stirring and dispersing, heating to 80-90 ℃, dropwise adding a sodium acrylate solution and hydrogen peroxide at the temperature, preserving heat for 2 hours after dropwise adding is completed, and cooling to room temperature to obtain the acrylic polymer.

7. The neutralizing soaping agent according to claim 6, characterized in that: in the step S2, the temperature rise speed is 4-5 ℃/min.