Organosilicon modified emulsifier as well as preparation method and application thereof

Abstract

The invention provides an organic silicon modified emulsifier as well as a preparation method and application thereof. The organic silicon modified emulsifier is prepared from the following raw materials: an alkenyl-containing non-hydrophilic monomer, alkenyl-containing organopolysiloxane and an alkenyl-containing hydrophilic monomer, the mass ratio of the alkenyl-containing non-hydrophilic monomer to the alkenyl-containing organopolysiloxane to the alkenyl-containing hydrophilic monomer is (70 to 94): (1 to 10): (5 to 25). The organic silicon modified emulsifier not only can be used for independently emulsifying octadecyl and long-carbon-chain alkyl modified organic silicon polymers, but also can be used for independently emulsifying long-carbon-chain alkane modified organic silicon polymers with C30 and above alkyl groups, and silicon wax emulsion obtained by adopting the organic silicon modified emulsifier is small in particle size and good in stability.

Description

Technical Field

[0001] The present invention belongs to the technical field of organic silicon, and in particular relates to an organic silicon modified emulsifier and a preparation method and application thereof. Background Art

[0002] Wax emulsion is an aqueous emulsion obtained by emulsifying and dispersing natural wax or synthetic wax. It has the characteristics of good hand feel, waterproof and antifouling properties, etc., and has been widely used in textile finishing, leather, flooring, papermaking, construction, coatings, inks and other fields. Silicone wax emulsion is one of the most widely used wax emulsions. It is obtained by mechanically stirring and emulsifying and dispersing long-chain alkyl-modified polysiloxane with an emulsifier. It has good moisturizing, lubricity, skin affinity and softness, and is widely used in personal care products, leather finishing, fabric finishing and other fields. Due to the hydrophobicity of silicone wax, an emulsifier is needed to obtain a stable silicone wax emulsion.

[0003] The patent with publication number CN110283336A discloses the preparation and application of a silicone wax emulsion for moisturizing cosmetics. It discloses a method for preparing a silicone wax emulsion for moisturizing cosmetics, and specifically discloses that the emulsifier used is a cetearyl olive oil ester / sorbitan olive oil ester composite emulsifier, the mass of which accounts for 20% of the mass of the oil phase, and the oil phase is silicone wax and the composite emulsifier.

[0004] The patent with publication number CN107216458A discloses an octadecyl silicone wax and its preparation method and application. It also discloses an silicone wax emulsion, which includes the following components by mass percentage: 7.5-15% emulsifier; 42-55% water; 100% octadecyl silicone wax; the emulsifier is glyceryl monostearate.

[0005] The patent with publication number CN113461970A discloses a silicone wax emulsion and a preparation method thereof, and specifically discloses that the silicone wax emulsion is obtained by the synergistic effect of a surfactant and a wetting agent, the surfactant is a cationic surfactant or an anionic surfactant; the cationic surfactant is selected from one or more of fatty amine salts, ethanolamine salts, stearic acid amide salts and polyethylene polyamine salts; the anionic surfactant is selected from one or more of anionic polyacrylamide, fatty acid salts, sulfonates, sulfate esters and phosphate esters.

[0006] The emulsifiers disclosed in the above prior art can usually only emulsify long-chain alkyl polysiloxanes with less than 18 carbon atoms, or need to be compounded with other surfactants to obtain a better emulsification effect, and there are problems such as low emulsification efficiency.

[0007] Therefore, developing an efficient emulsifier for wax emulsion is a technical problem that needs to be solved in this field. Summary of the invention

[0008] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an organosilicon-modified emulsifier and its preparation method and application. The organosilicon-modified emulsifier provided by the present invention has a special structure, which gives it a high-efficiency silicone wax emulsification ability. It can emulsify various waxes alone, especially long-chain silicone waxes, to obtain a stable wax emulsion.

[0009] To achieve this object, the present invention adopts the following technical solutions: In a first aspect, the present invention provides an organosilicon-modified emulsifier, wherein the raw materials for preparing the organosilicon-modified emulsifier include: an alkenyl-containing non-hydrophilic monomer, an alkenyl-containing organopolysiloxane, and an alkenyl-containing hydrophilic monomer; The mass ratio of the alkenyl-containing non-hydrophilic monomer, the alkenyl-containing organopolysiloxane and the alkenyl-containing hydrophilic monomer is (70-94): (1-10): (5-25).

[0010] More preferably, the mass ratio of the alkenyl-containing non-hydrophilic monomer, the alkenyl-containing organopolysiloxane and the alkenyl-containing hydrophilic monomer is (70-94): (5-10): (5-20).

[0011] Among them, (70~94) can be 72, 75, 78, 80, 82, 85, 88, 90, 92, etc.; (1~10) can take values ​​of 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, etc.; (5~25) can take values ​​of 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 23, 25, etc.

[0012] Preferably, the alkenyl-containing non-hydrophilic monomers include C15-C21 long carbon chain acrylate monomers, C4-C14 soft monomers and C4-C14 hard monomers.

[0013] Preferably, the mass ratio of the C15-C21 long carbon chain acrylate monomer, the C4-C14 soft monomer and the C4-C14 hard monomer is (8-15): (23-35): (35-45).

[0014] Among them, (8~15) can take values ​​of 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14, 14.5, etc.; (23~35) can be 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, etc. (35~46) can take values ​​of 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, etc.

[0015] Preferably, the alkenyl-containing hydrophilic monomer includes one or more of a double-bond carboxylic acid monomer, a double-bond sulfonic acid monomer, a double-bond polyether monomer, a double-bond phosphoric acid monomer, and a double-bond quaternary ammonium salt monomer.

[0016] Preferably, the double bond-containing carboxylic acid monomer includes one or more of acrylic acid, methacrylic acid, maleic anhydride, itaconic acid, and crotonic acid.

[0017] Preferably, the double bond-containing sulfonic acid monomer includes one or more of 2-acrylamido-2-methyl-1-propane sulfonic acid, styrene sulfonic acid, and vinyl sulfonic acid.

[0018] Preferably, the double bond-containing polyether monomer includes one or more of allyl polyoxyethylene ether, methyl allyl polyoxyethylene ether, polyethylene glycol divinyl ether, and polypropylene glycol monomethacrylate.

[0019] Preferably, the double-bond-containing phosphoric acid includes one or more of vinyl phosphoric acid, vinyl phenyl phosphoric acid, di(methacryloyloxyethyl) phosphate, dibutyl-2-methacryloyloxyethyl phosphate, diphenyl-2-methacryloyloxyethyl phosphate, dibutyl-2-acryloyloxyethyl phosphate, and dioctyl-2-(meth)acryloyloxyethyl phosphate.

[0020] Preferably, the double bond-containing quaternary ammonium salt monomer includes methacryloyloxyethyltrimethylammonium chloride, N,N,N-trimethyl-N-methacryloyloxy (2-hydroxypropyl) ammonium chloride, and N,N,N-trimethyl-N-methacryloyloxy (2-hydroxypropyl) ammonium chloride.

[0021] Preferably, the C15-C21 long carbon chain acrylate monomer includes one or more of dodecyl acrylate, dodecyl methacrylate, octadecyl acrylate, pentadecyl methacrylate, and octadecyl 2-methyl-2-acrylate.

[0022] In the present invention, the soft monomer refers to an olefinic monomer whose homopolymer has a glass transition temperature lower than 0°C, and the hard monomer refers to an olefinic monomer whose homopolymer has a glass transition temperature higher than 0°C.

[0023] For example, the C4~C14 soft monomers may include ethyl acrylate, butyl acrylate, isooctyl acrylate, etc.; the C4~C14 hard monomers may include methyl methacrylate, styrene, acrylonitrile, ethyl methacrylate, isopropyl methacrylate, butyl methacrylate, isobutyl methacrylate, isobornyl acrylate, etc.

[0024] Preferably, the alkenyl non-hydrophilic monomer includes one or more of methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, propyl acrylate, propyl methacrylate, butyl acrylate, butyl methacrylate, pentyl acrylate, pentyl methacrylate, hexyl acrylate, hexyl methacrylate, heptyl acrylate, heptyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, octyl acrylate, octyl methacrylate, tert-octyl acrylate, tert-octyl methacrylate, nonyl acrylate, nonyl methacrylate, decyl acrylate, decyl methacrylate, isobornyl acrylate, and isobornyl methacrylate.

[0025] In a second aspect, the present invention provides a method for preparing the above-mentioned organosilicon-modified emulsifier, the preparation method comprising the following steps: The reaction system consisting of the alkenyl-containing organopolysiloxane, the alkenyl-containing hydrophilic monomer and the alkenyl-containing non-hydrophilic monomer is subjected to free radical polymerization to obtain the organosilicon-modified emulsifier.

[0026] Specifically, the free radical polymerization reaction can be selected from emulsion polymerization reaction or solution polymerization reaction. Both emulsion polymerization reaction and solution polymerization reaction are well known in the art and will not be described in detail here.

[0027] Furthermore, the preparation method comprises the following steps: subjecting a reaction system composed of an alkenyl-containing organopolysiloxane, an alkenyl-containing hydrophilic monomer and an alkenyl non-hydrophilic monomer to solution polymerization to obtain the organosilicon-modified emulsifier.

[0028] Preferably, the reaction system further comprises an initiator and a solution; Preferably, the initiator includes any one of an azo initiator, an organic peroxide initiator, and a redox initiator; Preferably, the reaction temperature is 60-90° C., and the reaction time is 3-10 h.

[0029] Specifically, the azo initiator includes azobisisobutyronitrile and / or azobisisoheptanenitrile.

[0030] Specifically, the organic peroxide initiator includes any one of benzoyl peroxide, lauroyl peroxide, cumene hydroperoxide, tert-butyl hydroperoxide, diisopropyl peroxydicarbonate, dicyclohexyl peroxydicarbonate, methyl ethyl ketone peroxide, and cyclohexanone peroxide.

[0031] Preferably, the redox initiator is tert-butyl hydroperoxide / sodium metabisulfite.

[0032] Preferably, the solvent includes one or more of toluene, xylene, ethyl acetate, butyl acetate, propylene glycol methyl ether acetate, acetone, butanone, and methyl isobutyl ketone.

[0033] In a third aspect, the present invention provides a use of the above-mentioned organosilicon-modified emulsifier or the organosilicon-modified emulsifier obtained according to the above-mentioned preparation method in a wax emulsion.

[0034] In a fourth aspect, the present invention provides a wax emulsion comprising 5-20% emulsifier and 80-95% wax; the emulsifier is the above-mentioned organosilicon-modified emulsifier or the organosilicon-modified emulsifier prepared according to the above-mentioned preparation method.

[0035] In a fifth aspect, the present invention provides the use of the wax emulsion in leather finishing, building products, and personal care products.

[0036] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses alkenyl-containing organopolysiloxane, alkenyl-containing hydrophilic monomer and alkenyl-containing non-hydrophilic monomer as preparation raw materials to obtain an organosilicon-modified emulsifier. The special structure of the organosilicon-modified emulsifier gives it a highly efficient silicone wax emulsification ability. It can not only emulsify octadecyl and below long carbon chain alkyl-modified organosilicon polymers alone, but also emulsify C30 and above long carbon chain alkane-modified organosilicon polymers alone. The silicone wax emulsion obtained by using the organosilicon-modified emulsifier has a small particle size and good stability. At the same time, the organosilicon-modified emulsifier is also suitable for other wax substances, such as paraffin wax. DETAILED DESCRIPTION

[0038] The technical solution of the present invention is further described below by specific implementation methods. It should be understood by those skilled in the art that the embodiments are only to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0039] The following monoacrylate-terminated polysiloxane is sourced from Guangzhou Silok New Materials Co., Ltd.

[0040] Example 1 This embodiment provides a silicone modified emulsifier, and the raw materials for its preparation include: 5g monoacrylate-terminated polysiloxane (Silok 3821F3, Guangzhou), 15g 2-acrylamido-2-methyl-1-propane sulfonic acid, 40g methyl methacrylate, 30g butyl acrylate, 10g octadecyl methacrylate, 120g isopropanol and 10g azobisisobutyronitrile solution (1g azobisisobutyronitrile + 9g isopropanol).

[0041] The preparation method of the above-mentioned organosilicon modified emulsifier comprises the following steps: The monoacrylate-terminated polysiloxane (Silok 3821F3, Guangzhou), 2-acrylamido-2-methyl-1-propane sulfonic acid, methyl methacrylate, butyl acrylate, octadecyl methacrylate and isopropanol were uniformly mixed to obtain a reaction solution, and the reaction solution was added dropwise into a reactor. Stirring was started, nitrogen was introduced, and the temperature was raised to 60°C. Azobisisobutyronitrile (1g azobisisobutyronitrile + 9g isopropanol) was simultaneously added dropwise into the reactor, and the addition was completed in about 3.5 hours. After the addition was completed, the temperature was raised to 65°C and the reaction was kept warm for 5 hours. After the reaction was completed, the solvent was removed to obtain a silicone modified emulsifier.

[0042] Example 2 This embodiment provides a silicone modified emulsifier, and the raw materials for its preparation include: 10g monoacrylate-terminated polysiloxane (Silok 3821F8, Guangzhou), 10g methacryloyloxyethyltrimethylammonium chloride, 45g methyl methacrylate, 23g butyl acrylate, 12g dodecyl methacrylate and 10g dibenzoyl peroxide solution (0.7g dibenzoyl peroxide + 9.3g acetone).

[0043] The preparation method of the above-mentioned organosilicon modified emulsifier comprises: The monoacrylate-terminated polysiloxane (Silok 3821F8, Guangzhou City), methacryloyloxyethyltrimethylammonium chloride, methyl methacrylate, butyl acrylate, dodecyl methacrylate and 150g of isopropanol were uniformly mixed to obtain a reaction solution, and the reaction solution was added dropwise to a reactor. Stirring was started, nitrogen was introduced, and the temperature was raised to 70°C. 10g of dibenzoyl peroxide solution (1g dibenzoyl peroxide + 9g acetone) was simultaneously added dropwise to the reactor, and the addition was completed in about 3.5h. After the addition was completed, the temperature was raised to 85°C and the reaction was kept warm for 5h. After the reaction was completed, the solvent was removed to obtain a silicone modified emulsifier.

[0044] Example 3 This embodiment provides a silicone modified emulsifier, and the raw materials for its preparation include: 7g monoacrylate-terminated polysiloxane (Silok 3821F3, Guangzhou), 12g allyl polyoxyethylene ether, 35g methyl methacrylate, 35g butyl acrylate, 15g octadecyl acrylate, 120g isopropanol and 10g azobisisobutyronitrile solution (0.8g azobisisoheptanenitrile + 9.2g isopropanol).

[0045] The preparation method of the above-mentioned organosilicon modified emulsifier comprises: The monoacrylate-terminated polysiloxane (Silok 3821F3, Guangzhou), allyl polyoxyethylene ether, methyl methacrylate, butyl acrylate, octadecyl acrylate and 150g of isopropanol were uniformly mixed to obtain a reaction solution, and the reaction solution was added dropwise into the reactor. Stirring was started, nitrogen was introduced, and the temperature was raised to 75°C. 10g of azobisisoheptanitrile solution (1g azobisisoheptanitrile + 9g isopropanol) was simultaneously added dropwise into the reactor, and the addition was completed in about 3.5h. After the addition was completed, the temperature was raised to 85°C and the reaction was kept warm for 6h. After the reaction was completed, the solvent was removed to obtain a silicone modified emulsifier.

[0046] Example 4 The difference between this embodiment and embodiment 1 is that: in this embodiment, the amount of 2-acrylamido-2-methyl-1-propane sulfonic acid added is 5 g, the amount of monoacrylate-terminated polysiloxane (Silok 3821F3, Guangzhou) remains unchanged, the total weight of other components is changed to 90 g, and the mass ratio is kept unchanged. The specific mass of each preparation raw material is as follows: 5g monoacrylate-terminated polysiloxane (Silok 3821F3, Guangzhou), 5g 2-acrylamido-2-methyl-1-propane sulfonic acid, 45g methyl methacrylate, 33.8g butyl acrylate, 11.2g octadecyl methacrylate, 120g isopropanol and 10g azobisisobutyronitrile solution (1g azobisisobutyronitrile + 9g isopropanol).

[0047] Example 5 The difference between this embodiment and embodiment 1 is that: in this embodiment, the amount of 2-acrylamido-2-methyl-1-propane sulfonic acid added is 20 g, the amount of acrylate-terminated polysiloxane (Silok 3821F3, Guangzhou) remains unchanged, the total weight of other components is changed to 75 g, and the mass ratio between other components remains unchanged. The specific mass of each preparation raw material is as follows: 5g monoacrylate-terminated polysiloxane (Silok 3821F3, Guangzhou), 20g 2-acrylamido-2-methyl-1-propane sulfonic acid, 37.5g methyl methacrylate, 28.1g butyl acrylate, 9.4g octadecyl methacrylate, 120g isopropanol and 10g azobisisobutyronitrile solution (1g azobisisobutyronitrile + 9g isopropanol).

[0048] Example 6 The difference between this embodiment and embodiment 1 is that: in this embodiment, the amount of 2-acrylamido-2-methyl-1-propane sulfonic acid added is 25 g, the amount of acrylate-terminated polysiloxane (Silok 3821F3, Guangzhou) remains unchanged, the total weight of other components is changed to 70 g, and the mass ratio between other components is kept unchanged. The specific mass of each preparation raw material is as follows: 5g monoacrylate-terminated polysiloxane (Silok 3821F3, Guangzhou), 25g 2-acrylamido-2-methyl-1-propane sulfonic acid, 35g methyl methacrylate, 26.3g butyl acrylate, 8.7g octadecyl methacrylate, 120g isopropanol and 10g azobisisobutyronitrile solution (1g azobisisobutyronitrile + 9g isopropanol).

[0049] Example 7 The difference between this embodiment and embodiment 1 is that: in this embodiment, octadecyl methacrylate is not added, wherein the amount of 2-acrylamido-2-methyl-1-propane sulfonic acid and acrylate-terminated polysiloxane (Silok 3821F3, Guangzhou) remains unchanged, the total weight of other components becomes 80 g, and the mass ratio between other components remains unchanged. The specific mass of each preparation raw material is as follows: 5g monoacrylate-terminated polysiloxane (Silok 3821F3, Guangzhou), 15g 2-acrylamido-2-methyl-1-propane sulfonic acid, 45.7g methyl methacrylate, 34.3g butyl acrylate, 120g isopropanol and 10g azobisisobutyronitrile solution (1g azobisisobutyronitrile + 9g isopropanol).

[0050] Example 8 The difference between this embodiment and embodiment 1 is that: in this embodiment, the amount of acrylate-terminated polysiloxane (Silok 3821F3, Guangzhou) added is 1 g, the amount of 2-acrylamido-2-methyl-1-propane sulfonic acid remains unchanged, the total weight of other components becomes 84 g, and the mass ratio between other components remains unchanged. The specific mass of each preparation raw material is as follows: 1g monoacrylate-terminated polysiloxane (Silok 3821F3, Guangzhou), 15g 2-acrylamido-2-methyl-1-propane sulfonic acid, 42g methyl methacrylate, 31.5g butyl acrylate, 10.5g octadecyl methacrylate, 120g isopropanol and 10g azobisisobutyronitrile solution (1g azobisisobutyronitrile + 9g isopropanol).

[0051] Comparative Example 1 The only difference between this comparative example and Example 1 is that the monoacrylate-terminated polysiloxane is replaced with allyltriethylsilane of the same mass.

[0052] Comparative Example 2 The difference between this comparative example and Example 1 is that: monoacrylate-terminated polysiloxane is not added, wherein the amount of 2-acrylamido-2-methyl-1-propane sulfonic acid remains unchanged, the total weight of other components is changed to 85 g, and the mass ratio between other components remains unchanged. The specific mass of each preparation raw material is as follows: 15 g of 2-acrylamido-2-methyl-1-propanesulfonic acid, 42.5 g of methyl methacrylate, 31.9 g of butyl acrylate, 10.6 g of octadecyl methacrylate, 120 g of isopropanol and 10 g of azobisisobutyronitrile solution (1 g of azobisisobutyronitrile + 9 g of isopropanol).

[0053] Application Examples 1~8, Comparative Application Examples 1~2 A silicone wax emulsion, wherein the raw materials for preparing the emulsion include: 8g of an emulsifier, 40g of C30-45 alkyl polydimethylsiloxane (Sicare 264-70, Hunan Siluoke) and 52g of deionized water; the emulsifier is the silicone-modified emulsifier obtained in the above-mentioned Examples 1-8 and Comparative Examples 1-2.

[0054] The preparation method of the above-mentioned silicone wax emulsion is as follows: after mixing the above-mentioned raw materials, heat to 70° C., add a pH regulator to adjust the pH to 7-7.5, shear and disperse, and obtain the silicone wax emulsion.

[0055] Performance Testing The organosilicon wax emulsions obtained in Application Examples 1 to 8 and Comparative Examples 1 to 2 were subjected to stability tests. The specific test method is as follows. The results obtained are shown in Table 1.

[0056] Stability test: Add the silicone wax emulsion into a centrifuge tube with a scale, place it in a centrifuge, and centrifuge it at 4000r / min for 15 minutes. Observe the stratification of the silicone wax emulsion and divide it into 3 levels according to the stratification. Level 3 represents the best stability with no stratification; Level 2 represents average stability with slight stratification; Level 1 represents poor stability with obvious stratification.

[0057] Dispersibility test: drop the silicone wax emulsion into water, observe the dispersion, and divide it into 1 to 5 levels according to the dispersion, among which level 5: after the silicone wax emulsion is dropped into water, it can quickly disperse into a blue fluorescent mist dispersion, and after a little stirring, it becomes a blue or pale transparent solution; level 4: after the silicone wax emulsion is dropped into water, it can quickly and automatically disperse into a blue-white mist dispersion with fluorescence, and after a little stirring, it becomes a blue translucent solution; level 3: after the silicone wax emulsion is dropped into water, it appears as a white mist or strip dispersion, and after stirring, a milky white slightly fluorescent opaque emulsion is obtained; level 2: after the silicone wax emulsion is dropped into water, it appears as white particles floating on the water surface, and after stirring, it can still become a milky white opaque emulsion; after the level 1 silicone wax emulsion is dropped into water, it appears as large particles floating on the water surface, and although it can be emulsified after stirring, it will immediately stratify and the silicone wax will float up.

[0058] Table 1

[0059] From the data in Table 1, we can see that: The organosilicon-modified emulsifiers obtained in Examples 1 to 8 of the present invention have good emulsification properties and can emulsify long-chain silicone waxes to obtain stable organosilicon wax emulsions with good dispersibility.

[0060] From the comparison between Comparative Examples 1 and 2 and Example 1, it can be seen that when the obtained organosilicon-modified emulsifier does not have a long-chain siloxane segment, the emulsification ability is significantly reduced.

[0061] The applicant declares that the present invention is illustrated by the above embodiments, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of various raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. A silicone modified emulsifier, characterized in that: The raw materials for preparing the organosilicon-modified emulsifier include: alkenyl-containing non-hydrophilic monomer, alkenyl-containing organopolysiloxane and alkenyl-containing hydrophilic monomer; The mass ratio of the alkenyl-containing non-hydrophilic monomer, the alkenyl-containing organopolysiloxane and the alkenyl-containing hydrophilic monomer is (70-94): (1-10): (5-25).

2. The organosilicon-modified emulsifier according to claim 1, characterized in that: The alkenyl-containing non-hydrophilic monomers include C15-C21 long carbon chain acrylate monomers, C4-C14 soft monomers and C4-C14 hard monomers; Preferably, the mass ratio of the C15-C21 long carbon chain acrylate monomer, the C4-C14 soft monomer and the C4-C14 hard monomer is (8-15): (23-35): (35-46).

3. The organosilicon-modified emulsifier according to claim 1, characterized in that: The alkenyl-containing hydrophilic monomer includes one or more of a double-bond carboxylic acid monomer, a double-bond sulfonic acid monomer, a double-bond polyether monomer, a double-bond phosphoric acid monomer, and a double-bond quaternary ammonium salt monomer.

4. The organosilicon-modified emulsifier according to claim 3, characterized in that: The double-bond carboxylic acid monomer includes one or more of acrylic acid, methacrylic acid, maleic anhydride, itaconic acid, and crotonic acid; Preferably, the double bond-containing sulfonic acid monomer includes one or more of 2-acrylamido-2-methyl-1-propane sulfonic acid, styrene sulfonic acid, and vinyl sulfonic acid; Preferably, the double bond-containing polyether monomer includes one or more of allyl polyoxyethylene ether, methyl allyl polyoxyethylene ether, polyethylene glycol divinyl ether, and polypropylene glycol monomethacrylate; Preferably, the double-bond-containing phosphoric acid includes one or more of vinyl phosphoric acid, vinyl phenyl phosphoric acid, di(methacryloyloxyethyl) phosphate, dibutyl-2-methacryloyloxyethyl phosphate, diphenyl-2-methacryloyloxyethyl phosphate, dibutyl-2-acryloyloxyethyl phosphate, and dioctyl-2-(meth)acryloyloxyethyl phosphate; Preferably, the double bond-containing quaternary ammonium salt monomer includes one or more of methacryloyloxyethyltrimethylammonium chloride, N,N,N-trimethyl-N-methacryloyloxy (2-hydroxypropyl) ammonium chloride, and N,N,N-trimethyl-N-methacryloyloxy (2-hydroxypropyl) ammonium chloride.

5. The organosilicon-modified emulsifier according to claim 2, characterized in that: The C15-C21 long carbon chain acrylic acid ester monomer includes one or more of dodecyl acrylate, dodecyl methacrylate, octadecyl acrylate, pentadecyl methacrylate, and octadecyl 2-methyl-2-acrylate.

6. The organosilicon-modified emulsifier according to claim 1, characterized in that: The alkenyl non-hydrophilic monomer includes one or more of methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, propyl acrylate, propyl methacrylate, butyl acrylate, butyl methacrylate, pentyl acrylate, pentyl methacrylate, hexyl acrylate, hexyl methacrylate, heptyl acrylate, heptyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, octyl acrylate, octyl methacrylate, tert-octyl acrylate, tert-octyl methacrylate, nonyl acrylate, nonyl methacrylate, decyl acrylate, decyl methacrylate, isobornyl acrylate, and isobornyl methacrylate.

7. The method for preparing the organosilicon-modified emulsifier according to any one of claims 1 to 6, characterized in that: The preparation method comprises the following steps: The reaction system consisting of an alkenyl-containing organopolysiloxane, an alkenyl-containing hydrophilic monomer and an alkenyl-containing non-hydrophilic monomer is subjected to a free radical polymerization reaction to obtain the organosilicon-modified emulsifier; Preferably, the reaction system further comprises an initiator and a solution; Preferably, the initiator includes any one of an azo initiator, an organic peroxide initiator, and a redox initiator; Preferably, the reaction temperature is 60-90° C., and the reaction time is 3-10 h.

8. Use of the organosilicon-modified emulsifier according to any one of claims 1 to 6 or the organosilicon-modified emulsifier prepared by the preparation method according to claim 7 in wax emulsion.

9. A wax emulsion, characterized in that: It comprises 5-20% emulsifier and 80-95% wax; the emulsifier is the organosilicon-modified emulsifier according to any one of claims 1 to 6 or the organosilicon-modified emulsifier prepared according to the preparation method of claim 7.

10. Use of the wax emulsion as claimed in claim 9 in leather finishing, building products and personal care products.

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