A multifunctional enoate ester monomer based on bisphenol a bis(2,3-dihydroxypropyl) ether and a method for preparing the same

Abstract

This invention discloses a polyfunctional acrylate monomer based on bisphenol A di(2,3-dihydroxypropyl) ether and its preparation method, belonging to the field of fine chemical and polymer materials technology. The method uses bisphenol A di(2,3-dihydroxypropyl) ether as a raw material and reacts it with an acrylate via transesterification in the presence of a catalyst to obtain a polyfunctional acrylate monomer with an average degree of substitution of 2-4. The catalyst is selected from organometallic catalysts, metal salt catalysts, basic catalysts, acidic catalysts, or ionic catalysts. The reaction temperature is 80-140 °C, and the reaction time is 4-40 hours. This invention uses a tetrafunctional precursor containing four hydroxyl groups to replace traditional bisphenol A diglycidyl ether, significantly improving the double bond functionality of the product through a multi-step transesterification reaction. The process is simple and controllable, and the degree of substitution of the product is flexibly adjustable, making it suitable for fields such as photocurable coatings, adhesives, and high-performance composite materials.

Description

Technical Field

[0001] This invention belongs to the field of fine chemical and polymer materials technology, specifically relating to a multifunctional acrylate monomer based on bisphenol A di(2,3-dihydroxypropyl) ether and its preparation method. Background Technology

[0002] Bisphenol A-based acrylate monomers are core matrix resins widely used in the field of photocurable resins, with typical examples being bisphenol A dimethicone glycidyl ether (Bis-GMA) and its acrylate analogs. These monomers are typically synthesized by ring-opening esterification of bisphenol A diglycidyl ether (DGEBA) with methacrylic acid or acrylic acid, resulting in a product containing two acrylate double bonds and two secondary hydroxyl groups per molecule. Due to their rigid molecular skeleton, high strength, and low curing volume shrinkage, these monomers are widely used in high-end coatings, adhesives, and composite materials.

[0003] However, existing bisphenol A-based dienoate monomers share the following common problems: First, their functionality is fixed at 2. Each molecule contains only two polymerizable double bonds, limiting the crosslinking network density after curing and thus restricting the potential for improving the material's mechanical properties and swelling resistance. Second, the presence of two hydroxyl groups in the molecule results in extremely high system viscosity, requiring the addition of large amounts of diluent monomers, which increases polymerization shrinkage. Third, the product structure has poor tunability. The fixed bifunctional structure makes it difficult to meet the differentiated requirements for crosslinking density in different applications.

[0004] In the relevant prior art, patent CN107216453A discloses bisphenol A bis(2,3-dihydroxypropyl) ether. The preparation method described above involves a compound containing four hydroxyl groups, primarily used as a structural unit in polyurethanes and polyesters, but does not involve the preparation of polyfunctional acrylate monomers via transesterification. Furthermore, existing transesterification methods for preparing acrylates are mostly limited to small-molecule monohydric or dihydric alcohol systems, and there is a lack of research on controlling the degree of substitution in acrylates from polyhydroxy aromatic compounds. Therefore, there is an urgent need to develop novel polyfunctional acrylate monomers with higher functionality, lower viscosity, and tunable product structures. Summary of the Invention

[0005] To address the problems of fixed and low functionality (only 2 double bonds), high system viscosity, and poor product structure tunability of existing bisphenol A-based acrylate monomers, this invention provides a multifunctional acrylate monomer based on bisphenol A di(2,3-dihydroxypropyl) ether. It is an acrylate exchange product of bisphenol A di(2,3-dihydroxypropyl) ether, prepared by partially or completely replacing the hydroxyl groups on the bisphenol A di(2,3-dihydroxypropyl) ether molecule with acrylate groups, with an average degree of substitution of 2 to 4, wherein the molecule contains 0 to 2 hydroxyl groups.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: This invention provides a polyfunctional acrylate monomer based on bisphenol A di(2,3-dihydroxypropyl) ether, which is a polyfunctional acrylate monomer with an average degree of substitution adjustable in the range of 2 to 4, and has the following general structural formula:

[0007] The four R groups are each independently H or -CO-C(R՛)=C(R՛՛)(R՛՛՛), where R՛, R՛՛, and R՛՛՛ are each independently hydrogen or C1-C6 alkyl. The values ​​of R՛, R՛՛, and R՛՛՛ depend on the selected unsaturated acrylate structure, with an average degree of substitution of 2-4. That is, on average, 2-4 of the four R groups are -CO-C(R՛)=C(R՛՛)(R՛՛՛), and the remainder are H.

[0008] Another aspect of the present invention provides a method for preparing a polyfunctional acrylate monomer based on bisphenol A di(2,3-dihydroxypropyl) ether as described above, comprising the following steps: using bisphenol A di(2,3-dihydroxypropyl) ether as a raw material, and carrying out an ester exchange reaction with an acrylate in the presence of a catalyst to obtain a polyfunctional acrylate monomer with an average degree of substitution of 2 to 4.

[0009] In an optional embodiment of the present invention, the acrylate is a compound containing an α,β-unsaturated carboxylic acid ester structure that is capable of undergoing transesterification with a hydroxyl group, and is selected from one or more of methyl acrylate, ethyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, ethyl methyl acrylate, and ethyl ethyl acrylate.

[0010] In one optional embodiment of the present invention, the catalyst is one or more of the following: organometallic catalyst, metal salt catalyst, basic catalyst, acidic catalyst, or ionic liquid catalyst.

[0011] Further, the organometallic catalyst is one or more of organotin oxides, organotin carboxylates, organotin halides, or organotin complexes; even further, the organometallic catalyst is one or more of dibutyltin oxide, dioctyltin oxide, monobutyltin oxide, dibutyltin dilaurate, dibutyltin diacetate, dibutyltin chloride, and organotin β-diketone complexes.

[0012] Further, the metal salt catalyst is one or more of alkali metal salts, alkaline earth metal salts, or transition metal salts; even further, the metal salt catalyst is one or more of metal carboxylates, metal β-diketones, metal alkoxides, metal halides, and metal oxides; still further, the metal salt catalyst is one or more of zinc acetate, manganese acetate, cobalt acetate, magnesium acetate, zinc chloride, aluminum chloride, zinc oxide, calcium oxide, tetrabutyl titanate, and tetraisopropyl titanate.

[0013] Further, the alkaline catalyst is one or more of inorganic bases, organic bases, or alkaline salts; even further, the alkaline catalyst is one or more of alkali metal hydroxides, alkaline salts, alkoxides, and organic bases; still further, the alkaline catalyst is one or more of lithium hydroxide, sodium hydroxide, potassium hydroxide, lithium carbonate, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, potassium methoxide, sodium ethoxide, potassium ethoxide, triethylamine, DBU, DBN, imidazole and its derivatives, and pyridines.

[0014] Further, the acidic catalyst is one or more of organic sulfonic acid, inorganic protic acid, or solid acid; even further, the acidic catalyst is one or more of p-toluenesulfonic acid, methanesulfonic acid, trifluoromethanesulfonic acid, dodecylbenzenesulfonic acid, sulfuric acid, phosphoric acid, hydrochloric acid, nitric acid, molecular sieve, acidic ion exchange resin, phosphotungstic acid, and silicotungstic acid.

[0015] Further, the ionic liquid catalyst is an acidic or basic ionic liquid; even further, the ionic liquid catalyst is one or more of imidazole ionic liquids, pyridine ionic liquids, quaternary ammonium salt ionic liquids, and quaternary phosphine salt ionic liquids, wherein the anion is selected from: Cl⁻, Br⁻, BF⁴⁻, PF⁶. - Or organic acid radicals (such as sulfonates).

[0016] In an optional embodiment of the present invention, the molar ratio of the hydroxyl groups in the acrylate to the bisphenol A di(2,3-dihydroxypropyl) ether is 1:1 to 20:1. Below this range, the degree of substitution is too low; above this range, it results in raw material waste and increases the load on subsequent separation processes.

[0017] Furthermore, the molar ratio of the hydroxyl groups in the acrylate to the bisphenol A di(2,3-dihydroxypropyl) ether is 3:1 to 10:1. In one optional embodiment of the present invention, the amount of catalyst used is 0.5% to 30% of the mass of bisphenol A di(2,3-dihydroxypropyl) ether. If the amount of catalyst is too small, the reaction rate will be low and the degree of substitution will be difficult to achieve the target value; if the amount is too large, it will increase the cost and make the product purification more difficult.

[0018] Furthermore, the amount of the catalyst used is 5% to 20% of the mass of bisphenol A di(2,3-dihydroxypropyl) ether.

[0019] In one optional embodiment of the present invention, the transesterification reaction is carried out at a temperature of 80 °C to 140 °C for a duration of 4 to 40 h. If the reaction temperature is too low, the transesterification activity will be insufficient; if the temperature is too high, it will easily trigger the thermal polymerization of the monomer as a side reaction.

[0020] Furthermore, the transesterification reaction is carried out at a temperature of 100 ℃ to 130 ℃ for a time of 10 to 30 h.

[0021] In an optional embodiment of the present invention, the catalytic reaction system further includes a solvent, wherein the solvent is toluene or xylene.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The functionality is greatly enhanced and adjustable.

[0023] By replacing the traditional bisphenol A diglycidyl ether (containing only two epoxy groups) used in bisphenol A-based dienoate monomers with bisphenol A di(2,3-dihydroxypropyl) ether containing four hydroxyl groups, acrylate groups are introduced in a one-step transesterification process. The average degree of substitution of the product can be controlled between 2 and 4, significantly higher than the fixed two double bonds in traditional bisphenol A-based dienoate monomers (such as Bis-GMA). The increased double bond density directly leads to a higher degree of crosslinking, resulting in a significant improvement in the strength and abrasion resistance of the cured product.

[0024] 2. Effectively reduces dependence on dilution monomers.

[0025] The reduced number of hydroxyl groups in the product's molecular structure lowers the system viscosity. In practical formulations, this can significantly reduce or even eliminate the addition of low-viscosity diluent monomers (such as triethylene glycol diacrylate, triethylene glycol dimethacrylate, etc.), thereby effectively reducing polymerization shrinkage and improving material dimensional stability.

[0026] 3. The product has a wide range of applications.

[0027] The resulting polyfunctional acrylic ester monomers can meet different application requirements according to different degrees of substitution: low degree of substitution products are suitable for coatings and adhesives with high requirements for flexibility and adhesion; high degree of substitution products are suitable for high-performance composite materials and photocurable resins with high requirements for hardness and wear resistance. Attached Figure Description

[0028] Figure 1 The infrared spectrum of the product of Example 6 is shown below.

[0029] Figure 2 The image shows the hydrogen nuclear magnetic resonance spectrum of the product from Example 6.

[0030] Figure 3 The image shows the hydrogen nuclear magnetic resonance spectrum of the product from Example 8.

[0031] Figure 4 The image shows the 1H NMR spectrum of the raw material bisphenol A di(2,3-dihydroxypropyl) ether. Detailed Implementation

[0032] To facilitate understanding of the present invention, a more comprehensive description will be given below. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the present invention. Example 1

[0033] 1.2 g of bisphenol A di(2,3-dihydroxypropyl) ether, 6 mL of methyl methacrylate (MMA) (the molar ratio of hydroxyl groups in MMA to bisphenol A di(2,3-dihydroxypropyl) ether was approximately 4.4:1), and 50 mg of concentrated sulfuric acid (98%) were added. The mixture was stirred at 100 °C for 40 h. During the reaction, the color of the system gradually deepened to dark brown. After the reaction was completed, the mixture was cooled, neutralized by alkali washing, washed with water, and subjected to reduced pressure to remove unreacted monomers, yielding 1.14 g of a dark brown viscous product. ¹H NMR analysis showed that the average degree of substitution of the product was approximately 2.01. Example 2

[0034] 1.2 g of bisphenol A di(2,3-dihydroxypropyl) ether, 6 mL of methyl methacrylate (the molar ratio of methyl methacrylate to the hydroxyl groups in bisphenol A di(2,3-dihydroxypropyl) ether was approximately 4.4:1), and 40 mg of sodium hydroxide were reacted at 100 °C with stirring for 30 h. During the reaction, the system gradually deepened in color to reddish-brown, accompanied by the formation of a small amount of insoluble matter. After the reaction was completed, an appropriate amount of deionized water was added to dilute the system, followed by extraction with chloroform. The mixture was allowed to stand and separate into layers. The organic phase was separated and washed with water until neutral. The organic phase was dried over anhydrous sodium sulfate and then distilled under reduced pressure to remove unreacted monomers and solvent, yielding 1.22 g of a dark brown viscous product. ¹H NMR analysis showed that the average degree of substitution of the product was approximately 2.20. Example 3

[0035] 1.2 g of bisphenol A di(2,3-dihydroxypropyl) ether, 6 mL of methyl methacrylate (the molar ratio of methyl methacrylate to the hydroxyl groups in bisphenol A di(2,3-dihydroxypropyl) ether was approximately 4.4:1), and 60 mg of zinc acetate dihydrate were reacted at 100 °C for 20 h with stirring. After the reaction was completed, the mixture was cooled, filtered, and subjected to reduced pressure to remove unreacted monomers, yielding 1.60 g of a pale yellow viscous product. ¹H NMR analysis showed that the average degree of substitution of the product was approximately 2.45. Example 4

[0036] 1.2 g of bisphenol A di(2,3-dihydroxypropyl) ether, 6 mL of methyl methacrylate (the molar ratio of methyl methacrylate to the hydroxyl groups in bisphenol A di(2,3-dihydroxypropyl) ether was approximately 4.4:1), 60 mg of zinc acetate dihydrate, and 10 mL of toluene were added and stirred at 110 °C for 20 h. After the reaction was complete, the mixture was cooled, filtered, and subjected to reduced pressure to remove unreacted monomers, yielding 1.75 g of a pale yellow viscous product. ¹H NMR analysis showed that the average degree of substitution of the product was approximately 2.70. Example 5

[0037] 1.2 g of bisphenol A di(2,3-dihydroxypropyl) ether, 3 mL of methyl methacrylate (the molar ratio of methyl methacrylate to the hydroxyl groups in bisphenol A di(2,3-dihydroxypropyl) ether was approximately 2.2:1), 20 mg of dibutyltin oxide, and 8 mL of toluene were added and stirred at 110 °C for 25 h. After the reaction was complete, the mixture was cooled, filtered, and subjected to reduced pressure to remove unreacted monomers, yielding 1.50 g of a pale yellow viscous product. ¹H NMR analysis showed that the average degree of substitution of the product was approximately 2.01. Example 6

[0038] 1.2 g of bisphenol A di(2,3-dihydroxypropyl) ether, 6 mL of methyl methacrylate (the molar ratio of methyl methacrylate to the hydroxyl groups in bisphenol A di(2,3-dihydroxypropyl) ether was approximately 4.4:1), and 50 mg of dibutyltin oxide were reacted at 100 °C for 25 h. After the reaction was completed, the mixture was cooled, filtered, and subjected to reduced pressure to remove unreacted monomers, yielding 1.89 g of a pale yellow viscous product. ¹H NMR analysis showed that the average degree of substitution of the product was approximately 3.31. Example 7

[0039] 1.2 g of bisphenol A di(2,3-dihydroxypropyl) ether, 6 mL of ethyl acrylate (the molar ratio of hydroxyl groups in ethyl acrylate to bisphenol A di(2,3-dihydroxypropyl) ether was approximately 4.3:1), 50 mg of dibutyltin oxide, and 10 mL of xylene were reacted at 115 °C for 30 h with stirring. After the reaction was completed, the mixture was cooled, filtered, and unreacted monomers were removed under reduced pressure to obtain 1.67 g of a pale yellow viscous product. ¹H NMR analysis showed that the average degree of substitution of the product was approximately 3.15. Example 8

[0040] 1.2 g of bisphenol A di(2,3-dihydroxypropyl) ether, 6 mL of methyl methacrylate (the molar ratio of methyl methacrylate to the hydroxyl groups in bisphenol A di(2,3-dihydroxypropyl) ether was approximately 4.4:1), and 60 mg of dibutyltin oxide were reacted at 80 °C for 40 h with stirring. After the reaction was completed, the mixture was cooled, filtered, and unreacted monomers were removed under reduced pressure to obtain 1.43 g of a pale yellow viscous product. ¹H NMR analysis showed that the average degree of substitution of the product was approximately 2.08. Example 9

[0041] 1.2 g of bisphenol A di(2,3-dihydroxypropyl) ether, 6 mL of methyl methacrylate (the molar ratio of methyl methacrylate to the hydroxyl groups in bisphenol A di(2,3-dihydroxypropyl) ether was approximately 4.4:1), 60 mg of dibutyltin oxide, and 10 mL of xylene were reacted at 130 °C with stirring for 30 h. After the reaction was completed, the mixture was cooled, filtered, and unreacted monomers were removed under reduced pressure to obtain 1.98 g of a pale yellow viscous product. ¹H NMR analysis showed that the average degree of substitution of the product was approximately 3.58. Example 10

[0042] 1.2 g of bisphenol A di(2,3-dihydroxypropyl) ether, 6 mL of methyl methacrylate (the molar ratio of hydroxyl groups in methyl methacrylate to bisphenol A di(2,3-dihydroxypropyl) ether was approximately 4.4:1), and 80 mg of 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF4) were reacted at 100 °C for 36 h with stirring. After the reaction was completed, the mixture was cooled to room temperature, and an appropriate amount of deionized water was added for extraction. Ethyl acetate was added to promote phase separation. After separation of the organic phase, the mixture was washed 2–3 times with water to remove residual ionic liquid. The ionic liquid mainly partitioned into the aqueous phase. The organic phase was dried over anhydrous sodium sulfate and then distilled under reduced pressure to remove unreacted monomers and solvent, yielding 1.30 g of a light brown viscous product. ¹H NMR analysis showed that the average degree of substitution of the product was approximately 2.10.

[0043] Examples 11-18 In accordance with the claims of the present invention, the following embodiments are further supplemented to cover various catalysts, acrylates, solvents and boundary conditions.

[0044] The preparation steps of Examples 11 to 18 can be carried out in accordance with the foregoing examples. The main differences are in the type and amount of catalyst, type and amount of acrylate, type and amount of solvent, reaction temperature and reaction time. The specific reaction conditions and results are shown in Table 1.

[0045] Examples 11, 12, 14, 16, and 17 used organotin or metal salt catalysts and toluene or xylene as solvents. After the reaction was completed, the mixture was cooled to room temperature, filtered to remove the catalyst or insoluble matter, and the filtrate was distilled under reduced pressure to remove unreacted acrylates and solvents, yielding the corresponding viscous products.

[0046] Examples 13 and 18 used tetrabutyl titanate as a catalyst and no additional solvent was added. After the reaction was completed, the mixture was cooled to room temperature, and unreacted acrylate and low-boiling substances were removed by direct vacuum distillation. Then, a small amount of ethyl acetate was added for dilution and the mixture was filtered to remove any possible titanium-based hydrolysis or condensation residues. Finally, vacuum distillation was performed to obtain the corresponding viscous product.

[0047] Example 15 used zinc chloride as a catalyst. After the reaction was completed, the mixture was cooled to room temperature, diluted with toluene or ethyl acetate, and washed successively with water to remove residual zinc chloride. The washing continued until the aqueous layer was neutral. The organic phase was dried over anhydrous sodium sulfate, and unreacted methyl methacrylate and solvent were removed under reduced pressure to obtain the corresponding viscous product.

[0048] Table 1. Reaction conditions and results of Examples 11-18

[0049] The above description is only for better explaining the embodiments of the present invention and is not intended to limit them. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are within the scope of the present invention.

Claims

1. A multifunctional acrylate monomer based on bisphenol A di(2,3-dihydroxypropyl) ether, characterized in that: It is a polyfunctional acrylate monomer with an average degree of substitution adjustable in the range of 2 to 4, and has the following general structural formula: ； The four R groups are each independently H or -CO-C(R՛)=C(R՛՛)(R՛՛՛), where R՛, R՛՛, and R՛՛՛ are each independently hydrogen or C1-C6 alkyl. The values ​​of R՛, R՛՛, and R՛՛՛ depend on the selected unsaturated acrylate structure, with an average degree of substitution of 2-4. That is, on average, 2-4 of the four R groups are -CO-C(R՛)=C(R՛՛)(R՛՛՛), and the remainder are H.

2. A method for preparing a polyfunctional acrylate monomer based on bisphenol A di(2,3-dihydroxypropyl) ether as described in claim 1, characterized in that: The process includes the following steps: mixing bisphenol A di(2,3-dihydroxypropyl) ether, acrylate and catalyst to form a catalytic reaction system, and carrying out transesterification to obtain a polyfunctional acrylate monomer with an average degree of substitution of 2 to 4.

3. The method for preparing a polyfunctional acrylate monomer based on bisphenol A di(2,3-dihydroxypropyl) ether according to claim 2, characterized in that: The acrylate is one or more of methyl acrylate, ethyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, ethyl methyl acrylate, and ethyl ethyl acrylate.

4. The method for preparing a polyfunctional acrylate monomer based on bisphenol A di(2,3-dihydroxypropyl) ether according to claim 2, characterized in that: The catalyst is one or more of the following: organometallic catalyst, metal salt catalyst, basic catalyst, acidic catalyst, or ionic liquid catalyst; the organometallic catalyst is one or more of the following: organotin oxide, organotin carboxylate, organotin halide, or organotin complex; the metal salt catalyst is one or more of the following: alkali metal salt, alkaline earth metal salt, or transition metal salt; the basic catalyst is one or more of the following: inorganic base, organic base, or basic salt; the acidic catalyst is one or more of the following: organic sulfonic acid, inorganic protic acid, or solid acid; the ionic liquid catalyst is an ionic liquid with acidic or basic properties.

5. The method for preparing a polyfunctional acrylate monomer based on bisphenol A di(2,3-dihydroxypropyl) ether according to claim 4, characterized in that: The organometallic catalyst is one or more of dibutyltin oxide, dioctyltin oxide, monobutyltin oxide, dibutyltin dilaurate, dibutyltin diacetate, dibutyltin chloride, and organotin β-diketone complexes; the metal salt catalyst is one or more of metal carboxylates, metal β-diketones, metal alkoxides, metal halides, and metal oxides; the basic catalyst is one or more of alkali metal hydroxides, basic salts, alkoxides, and organic bases; the acidic catalyst is one or more of p-toluenesulfonic acid, methanesulfonic acid, trifluoromethanesulfonic acid, dodecylbenzenesulfonic acid, sulfuric acid, phosphoric acid, hydrochloric acid, nitric acid, molecular sieves, acidic ion exchange resins, phosphotungstic acid, and silicotungstic acid; the ionic liquid catalyst is one or more of imidazole ionic liquids, pyridine ionic liquids, quaternary ammonium salt ionic liquids, and quaternary phosphonium salt ionic liquids, wherein the anion is selected from Cl⁻, Br⁻, and BF₄. - PF6 - Or organic acid radicals.

6. The method for preparing a polyfunctional acrylate monomer based on bisphenol A di(2,3-dihydroxypropyl) ether according to claim 5, characterized in that: The metal salt catalyst is one or more of the following: zinc acetate, manganese acetate, cobalt acetate, magnesium acetate, zinc chloride, aluminum chloride, zinc oxide, calcium oxide, tetrabutyl titanate, and tetraisopropyl titanate.

7. The method for preparing a polyfunctional acrylate monomer based on bisphenol A di(2,3-dihydroxypropyl) ether according to claim 5, characterized in that: The alkaline catalyst is one or more of the following: lithium hydroxide, sodium hydroxide, potassium hydroxide, lithium carbonate, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, potassium methoxide, sodium ethoxide, potassium ethoxide, triethylamine, DBU, DBN, imidazole and its derivatives, and pyridines.

8. The method for preparing a polyfunctional acrylate monomer based on bisphenol A di(2,3-dihydroxypropyl) ether according to claim 2, characterized in that: The molar ratio of the hydroxyl group in the acrylate to the hydroxyl group in bisphenol A di(2,3-dihydroxypropyl) ether is 1:1 to 20:

1.

9. The method for preparing the polyfunctional acrylate monomer based on bisphenol A di(2,3-dihydroxypropyl) ether according to claim 2, characterized in that: The amount of catalyst used is 0.5% to 30% of the mass of bisphenol A di(2,3-dihydroxypropyl) ether; the temperature of the transesterification reaction is 80 to 140 °C, and the time is 4 to 40 h.

10. The method for preparing a polyfunctional acrylate monomer based on bisphenol A di(2,3-dihydroxypropyl) ether according to claim 2, characterized in that: The catalytic reaction system also includes a solvent, which is toluene or xylene.

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