Ultrahigh-refraction polyurethane blue light protection optical material and preparation method thereof

Abstract

The invention relates to an ultrahigh-refraction polyurethane blue light protection optical material and a preparation method thereof. The polyurethane blue light protection optical material is technically characterized in that the polyurethane blue light protection optical material is composed of a four-component system of isocyanate, a hexa-sulfur heterocyclic trithiol compound, a light absorber and an auxiliary functional aid, and the composition of the polyurethane blue light protection optical material has excellent light filtering performance while maintaining an ultrahigh refractive index, can effectively filter ultraviolet rays, and has a good application prospect. According to the present invention, the blue light with different wavelengths can be accurately controlled and protected, the ultraviolet ray transmittance of 280-380 nm of the ultra-high refraction polyurethane blue light prevention lens prepared from the blue light prevention material is less than 0.01%, the blue light transmittance of 385-445 nm short wave is less than 23.7%, the blue light transmittance of 475-500 nm long wave is more than 80.4%, the visible light transmittance of 550-780 nm is more than 90%, the refractive index is more than 1.76, and the wide material selection range is provided for the application of the high-end blue light prevention optical component.

Description

Technical Field

[0001] The present invention belongs to the technical field of polythiocarbamate optical materials, and in particular relates to a polyurethane blue light protection optical material and a preparation method thereof. Background Art

[0002] 1. Blue light hazards and protection needs

[0003] With the prevalence of electronic devices, the harmful effects of blue light on the eyes are gaining increasing attention. Studies have shown that high-energy blue light with a wavelength of 400-440nm can penetrate the lens directly to the retina, generating free radicals that cause retinal pigment epithelial cell death and, in turn, vision impairment. However, blue light above 460nm has a positive effect on regulating the human circadian rhythm. Therefore, blue light protection materials need to block harmful blue light while retaining the transmittance of beneficial blue light to achieve precise protection.

[0004] Currently, blue light protection technologies are mainly divided into absorption and reflection methods. The absorption method achieves blue light blocking by adding blue light absorbers (such as benzotriazole compounds) to the material, but there are problems such as difficult dosage control, easy migration, and yellowing of the lens. The reflection method achieves blue light reflection through optical coating technology, but it can cause secondary glare damage, and the process is complex and costly.

[0005] 2. Advantages and limitations of polyurethane materials

[0006] Trithiol compounds, as intermediates with a unique structure in polyurethane optical materials, offer significant advantages in terms of refractive index, transparency, stability, and environmental friendliness. In recent years, the application of polyurethane optical resins in fields such as eyeglass lenses and optical films has steadily increased, becoming a key development direction for blue light protection materials. However, the market lacks ultra-high refractive index optical materials. Addressing the shortcomings of existing technologies, the development of a new ultra-high refractive index polyurethane blue light protection optical material is crucial for promoting the further application and development of polyurethane optical materials in the field of high-end optical protection. Summary of the Invention

[0007] In response to the above-mentioned problems in the prior art, the present invention provides a polyurethane polymer blue light protection optical material and a preparation method thereof. The polyurethane blue light protection optical material is formed by the polymerization of an isocyanate, a new hexasulfide heterocyclic trithiol compound, and a new light absorber mixture. While maintaining an ultra-high refractive index, the material also has excellent filtering performance, can effectively filter out ultraviolet rays, and accurately regulate and protect blue light of different wavelengths from 385 to 500 nm. The ultra-high refractive polyurethane blue light protection lens made of the material has an ultraviolet transmittance of less than 0.01% at 280 to 380 nm, a short-wave blue light transmittance of less than 23.7% at 385 to 445 nm, a long-wave blue light transmittance of more than 80.4% at 475 to 500 nm, a visible light transmittance of more than 90% at 550 to 780 nm, and a refractive index of more than 1.76, providing a wider range of material selection for the application of high-end blue light protection optical components.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] In one aspect, the present invention provides an ultra-high refractive polyurethane blue light protection optical material, which is polymerized from the following components as raw materials:

[0010] Component A: isocyanate, 30-50 parts by weight;

[0011] Component B: 20 ​​to 50 parts by weight of a hexasulfide heterocyclic trithiol compound represented by formula I;

[0012] Component C: light absorber mixture, 0.5 to 5 parts by weight;

[0013] The light absorber mixture is composed of N-vinyl-5-vinyluracil represented by formula A, a UV absorber, a solvent and an acrylate compound, and the weight ratio of the four is (1-3): (1-3): (7-15): (15-50);

[0014]

[0015] The ultra-high refractive polyurethane blue light protection optical material as described above, preferably, the raw materials further include: 0.2 to 1.5 parts by weight of component D: auxiliary function additive.

[0016] As described above, the ultra-high refractive polyurethane blue light protection optical material, preferably, the isocyanate is selected from at least one of toluene diisocyanate (TDI), triphenylmethane triisocyanate, cyclohexane diisocyanate, diphenylmethane diisocyanate (MDI), diphenyl ether diisocyanate, di-4,4'-diisocyanate dicyclohexylmethane, toluene diisocyanate (XDI), diethylene diisocyanate, tetramethylene diisocyanate, xylene diisocyanate, metaxylene diisocyanate, isophorone diisocyanate (IPDI), hexamethylene diisocyanate, dithiodipropyl diisocyanate, trimethylhexamethylene diisocyanate, thiodihexyl diisocyanate, dithiodiethyl diisocyanate, thiodipropyl diisocyanate, lysine triisocyanate, and o-tolidine diisocyanate.

[0017] In the ultra-high refractive polyurethane blue light protection optical material as described above, preferably, the ultraviolet absorber is at least one of UV-9, UV-21, UV-326, UV-327, UV-328, UV-329, UV-360 and UV-928.

[0018] As described above, the ultra-high refractive polyurethane blue light protection optical material, preferably, the solvent is selected from at least one of acetonitrile, chloroform, petroleum ether, n-hexane, dichloromethane, ethyl acetate, tetrahydrofuran, dimethyl sulfoxide, dimethylformamide, dimethylacetamide and methyl pyrrolidone.

[0019] As described above, the ultra-high refractive polyurethane blue light protection optical material, preferably, the acrylate compound is selected from at least one of methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate, hydroxymethyl methacrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, polyethylene glycol methacrylate, polyethylene glycol dimethacrylate, pentaerythritol tetraacrylate, ethoxylated nonylphenol acrylate, epoxy acrylate, bisphenol A epoxy acrylate and ethoxylated bisphenol A diacrylate.

[0020] As described above, for the ultra-high refractive polyurethane blue light protection optical material, preferably, the auxiliary functional agent is at least one of a colorant, a release agent, a catalyst, a defoaming agent, an initiator and a diluent.

[0021] As described above, for the ultra-high refractive polyurethane blue light protection optical material, preferably, the release agent is stearyl alcohol polyether-2 phosphate or isooctyl phosphate, and the amount of the release agent is 0.1 to 0.5% by weight of the isocyanate.

[0022] The catalyst is selected from one of stannous octoate, dibutyltin dilaurate, dibutyltin dichloride and dibutyltin oxide, and the amount of the catalyst is 0.1-0.5% of the weight of the isocyanate.

[0023] On the other hand, the present invention provides a method for preparing the ultra-high refractive polyurethane blue light protection optical material as described above, the method comprising the following steps:

[0024] I. Stir and mix the raw materials of components A, B and C in proportion;

[0025] II. Prepolymerize at 35-60°C for 30-60 minutes while removing air bubbles under vacuum, and then inject into a tempered filter lens mold;

[0026] III. Place the mold containing the prepolymer at 50-80°C for 3-12 hours, then raise the temperature to 80-100°C at a rate of 10°C / 30min, continue to place it for 2-5 hours, and finally cool it to room temperature and demold to obtain the ultra-high refractive polyurethane blue light protection optical material.

[0027] In another aspect, the present invention provides a method for preparing the ultra-high refractive polyurethane blue light protection optical material as described above, the method comprising the following steps:

[0028] I. Stir and mix the raw materials of components A, B and C in proportion;

[0029] II. Component D is added to the mixture obtained in step I above, prepolymerized at 35 to 60 ° C for 30 to 60 min, while vacuuming to remove bubbles, and injected into a toughened optical material mold;

[0030] III. Place the mold containing the prepolymer at 50-80°C for 3-12 hours, then raise the temperature to 80-100°C at a rate of (5-15)°C / 30min, continue to place it for 2-5 hours, and finally cool it to room temperature and demold to obtain an ultra-high refractive polyurethane blue light protection optical material.

[0031] The hexasulfide heterocyclic trithiol compound of the present invention can be prepared by the following method:

[0032] I. Sulfurization reaction: 2-mercapto-1,3-propanediol and a solvent are added to a reaction vessel equipped with an agitator, a vent pipe, and a temperature control device. Stirring is started and nitrogen is continuously introduced. Disulfur dichloride reagent is added with stirring. The temperature is controlled at 0-10°C and stirred for 2-5 hours. The alkaline catalyst is added dropwise within 1-20 minutes. The temperature is stirred and raised to 15-50°C. The reaction is continued for 2-5 hours. The organic phase is separated and eluted, and the solvent is removed by distillation under reduced pressure to obtain a thiotriol.

[0033] II. Cyclization reaction: Sodium tetrathiocarbonate is completely dissolved in a mixed solvent, the temperature is raised to 25-45°C, and then a thiotriol is added with stirring. A pyridine solution containing 4-dimethylaminopyridine as a catalyst is added dropwise over 1-20 minutes. The reaction is allowed to proceed for about 50-150 minutes. The reaction solution is extracted with chloroform. The resulting organic phase is dried and distilled to remove chloroform to obtain an oily hexasulfide heterocyclic trihydroxy alcohol.

[0034] III. Substitution reaction: To a reaction vessel equipped with a stirrer and a temperature controller, hexasulfide heterocyclic trihydroxy alcohol, thiourea and hydrochloric acid were added in a weight ratio of (1-2): (1-3): (1-4), stirred evenly and heated to 70-110 ° C., kept warm for 6-9 hours, and the mixture was naturally cooled. After the mixture was cooled to 40-55 ° C, an alkaline hydrolyzing agent was added dropwise to neutralize and adjust the pH of the solution. When the pH value of the solution was ≥7.5, the addition was stopped, and the hydrolysis was continued under nitrogen protection for 50-120 minutes. The system was allowed to stand until the system was separated. The organic phase was decolorized by adsorption with attapulgite, filtered, and the organic solvent was evaporated under reduced pressure to obtain a light yellow hexasulfide heterocyclic trithiol compound.

[0035] The beneficial effects of the present invention are as follows:

[0036] 1. The raw materials for synthesizing polyurethane of the present invention include a novel hexasulfide heterocyclic trithiol compound (Formula I), which can produce a polyurethane optical material with high transmittance and refractive index, with a visible light transmittance of 550-780 nm ≥88% and a refractive index >1.76.

[0037] 2. Add a light absorber mixture containing N-vinyl-5-vinyluracil (Formula A) and a UV absorber to the optical material. The uracil compound shown in Formula A has a stable NC bond in the molecule, a stable molecular structure, can remain stable in the polyurethane polymerization reaction, and has good high temperature resistance and UV resistance. At the same time, the π-π conjugated structure in the uracil ring enables it to absorb light of a specific wavelength. The presence of the vinyl group enhances the conjugation effect of the molecule and synergizes with conventional UV absorbers. The resulting lens product can differentially absorb blue light of different wavelengths from 385 to 500 nm, has high absorption of short-wave harmful blue light (385 to 445 nm), with a transmittance of less than 23.7%, and has low absorption of long-wave beneficial blue light (475 to 500 nm), with a transmittance of more than 80.4%, thereby achieving precise regulation and protection of blue light, which helps protect human vision and avoid color cast and visual fatigue. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a spectrum of the ultra-high refractive polyurethane anti-blue light lens prepared in Example 1. DETAILED DESCRIPTION

[0039] The present invention will be further described below with reference to specific examples, which are not intended to limit the scope of protection of the present invention.

[0040] Preparation Example 1 Preparation of hexathioheterocyclic trithiol compounds

[0041] To a reaction vessel equipped with an agitator, a vent pipe and a temperature control device, 450 g of 2-mercapto-1,3-propanediol, 150 g of methanol and 2000 g of petroleum ether were added respectively. Under N2 protection, 140 g of disulfur dichloride was slowly added with stirring over 10 minutes. The reaction was stirred at 1°C with ice water for 2.5 hours. 43 g of 25 wt% sodium hydroxide alkaline solution was added dropwise over 3 minutes. The temperature was raised to 33°C with stirring and the reaction was continued for 3.5 hours. The organic phase was separated and eluted, and the solvent was distilled to obtain 194 g of thiotriol (Formula II).

[0042]

[0043] Dissolve 185g of sodium tetrathiocarbonate in 1250g of tetrahydrofuran and 2800g of water, heat to 32°C, and add 185g of thiotriol with stirring to obtain a mixed solution. Add 9.5g of a pyridine solution containing 0.3g of 4-dimethylaminopyridine dropwise over 2 minutes. After reacting for 110 minutes, elute and extract the reaction solution with chloroform. The resulting organic phase is dried and distilled to remove chloroform to obtain 150g of a hexasulfide heterocyclic trihydroxy alcohol (Formula III).

[0044]

[0045] To a reaction vessel containing 145 g of hexasulfide trihydric alcohol, 240 g of thiourea and 380 g of 35 wt % hydrochloric acid were added with stirring. After uniform stirring, the mixture was heated to 90°C for 6.0 h, cooled naturally to 55°C, and a 38 wt % aqueous potassium carbonate solution was added dropwise. The addition was stopped when the solution reached a pH of 7.5. Hydrolysis was continued under nitrogen for 90 min, and the mixture was allowed to stand until demixing occurred. The organic phase was decolorized by adsorption with attapulgite, filtered, and the organic solvent was evaporated to obtain 151 g of a light yellow, transparent hexasulfide trithiol compound (Formula I). ​​The yield was 78.1%.

[0046]

[0047] Infrared spectrum FT-IR test: The prepared product was tested by Fourier transform infrared spectroscopy (FT-IR), and the results are as follows: 2957~2893cm -1 The absorption peaks of methine (-CH-) and carbon-hydrogen (CH) stretching vibration peaks are at 2538 cm -1 The absorption peak at 785-732 cm is the characteristic peak of thiol. -1 The bending vibration absorption peak of SH group is at 601~692cm -1The characteristic absorption peak of carbon-sulfur bond is 462 cm -1 The absorption peak of SS vibration is shown as a weak absorption peak.

[0048] 1HNMR (8) analysis: 4.30 (s, 3H), the compound has a single peak at δ = 4.30 ppm, indicating that the three CHs are in the same chemical environment, indicating that the compound has a symmetrical structure; δ = 1.78 ~ 1.82 ppm (m, 3H) has a characteristic SH triplet peak, and the hydrogen signal in the hydrogen spectrum is affected by the coverage, which also indicates the high symmetry of the compound.

[0049] Preparation Example 2 Preparation of N-vinyl-5-vinyluracil

[0050] 100g of 5-vinyluracil was added to a reaction vessel containing 25,000g of dimethylformamide solvent. After stirring until completely dissolved, 36wt% NaOH solution was added dropwise, and the pH was adjusted to ≥8.0. Vinyl chloride gas was introduced into the solution, and the reaction was heated to 85°C. 0.2g of dibenzylideneacetone dipalladium catalyst was added dropwise over 50 minutes. The reaction was continued for 8 hours, after which ventilation was stopped. Water was added and the mixture was extracted with dichloromethane. The organic phases were combined, dried over anhydrous sodium sulfate, and the crude product was subjected to dichloromethane / methanol column chromatography to obtain 112.3g of white N-vinyl-5-vinyluracil (Formula A) powder. The yield was 88.2%.

[0051] Infrared spectrum FT-IR test: The obtained product was tested by Fourier transform infrared spectrum (FT-IR). From the curve analysis, it can be seen that the 3240~3397cm -1 The NH stretching vibration peak (broad peak) is at 2852~3100cm -1 The C-H bond stretching vibration absorption peak is at 1705-1752 cm -1 It is the stretching vibration absorption peak of the carbonyl group (C=O) on the uracil ring; 1623~1682cm -1 The region is the C=C stretching vibration absorption peak; 1523~1601cm -1 The absorption peak is the vibration absorption peak of the pyrimidine ring skeleton; 1260~1365cm -1 The CN stretching vibration absorption peak is at .

[0052] H NMR nuclear magnetic resonance hydrogen spectrum analysis: δ = 10.71-10.13 (br s, 1H, NH); 7.82 (s, 1H, CH); 5.12-5.74 (d, 3H, CH2=CH); 5.89-6.46 (dd, 3H, CH2=CH).

[0053] Preparation Example 3: Preparation of Light Absorber Mixture

[0054] 2.75 g of N-vinyl-5-vinyluracil and 2.6 g of UV-326 ultraviolet absorber were added to 7.25 g of dichloromethane solvent, and then 20 g of methyl acrylate was added thereto, and stirred uniformly to obtain 32.6 g of a light absorber mixture.

[0055] The hexathiacyclic trithiol compound and the light absorber mixture used in the following examples are all obtained from Preparation Example 1 and Preparation Example 3.

[0056] Example 1

[0057] Mix 55g of diphenylmethane diisocyanate (MDI), 45g of hexasulfide heterocyclic trithiol compound and 1.2g of light absorber mixture evenly, add 0.15g of stearyl alcohol polyether-2 phosphate and 0.16g of dibutyltin dilaurate; prepolymerize at 45°C for 40min, remove bubbles in vacuo, and inject into a lens mold; place the mold containing the prepolymer at 60°C for 8h, then raise it to 90°C at a rate of 10°C / 30min, continue to place it for 2.5 hours, and finally cool to room temperature for demolding to obtain an ultra-high refractive polyurethane anti-blue light lens.

[0058] Example 2

[0059] Mix 60g of diphenylmethane diisocyanate, 45g of hexasulfide trithiol compound and 1.8g of light absorber mixture evenly, add 0.2g of stearyl alcohol polyether-2 phosphate and 0.15g of dibutyltin dilaurate; prepolymerize at 45°C for 40min, remove bubbles in vacuum, and inject into lens mold; place the mold containing the prepolymer at 60°C for 8h, then raise it to 90°C at a rate of 10°C / 30min, continue to place it for 2.5 hours, and finally cool to room temperature for demolding to obtain ultra-high refractive polyurethane anti-blue light lens.

[0060] Example 3

[0061] Mix 65g of diphenylmethane diisocyanate, 45g of hexasulfide trithiol compound and 1.2g of light absorber mixture evenly, add 0.2g of stearyl alcohol polyether-2 phosphate and 0.16g of dibutyltin dilaurate; prepolymerize at 45°C for 40min, remove bubbles in vacuo, and inject into a lens mold; place the mold containing the prepolymer at 60°C for 8h, then raise it to 90°C at a rate of 10°C / 30min, continue to place it for 2.5 hours, and finally cool to room temperature for demolding to obtain an ultra-high refractive polyurethane anti-blue light lens.

[0062] Example 4

[0063] Mix 70g of diphenylmethane diisocyanate, 45g of hexasulfide trithiol compound and 1.2g of light absorber mixture evenly, add 0.2g of stearyl alcohol polyether-2 phosphate and 0.2g of dibutyltin dilaurate; prepolymerize at 45°C for 40min, remove bubbles in vacuo, and inject into a lens mold; place the mold containing the prepolymer at 60°C for 8h, then raise it to 90°C at a rate of 10°C / 30min, continue to place it for 2.5 hours, and finally cool to room temperature for demolding to obtain an ultra-high refractive polyurethane anti-blue light lens.

[0064] Example 5

[0065] Mix 75g of diphenylmethane diisocyanate, 45g of hexasulfide trithiol compound and 1.2g of light absorber mixture evenly, add 0.2g of stearyl alcohol polyether-2 phosphate and 0.22g of dibutyltin dilaurate; prepolymerize at 45°C for 40 minutes, remove bubbles in vacuum, and inject into a lens mold; place the mold containing the prepolymer at 60°C for 8 hours, then raise it to 90°C at a rate of 10°C / 30min, continue to place it for 2.5 hours, and finally cool to room temperature for demolding to obtain an ultra-high refractive polyurethane anti-blue light lens.

[0066] Example 6

[0067] 80g of diphenylmethane diisocyanate, 45g of hexasulfide heterocyclic trithiol compound and 1.2g of light absorber mixture are mixed evenly, and 0.2g of stearyl alcohol polyether-2 phosphate and 0.25g of dibutyltin dilaurate are added; prepolymerization is carried out at 45°C for 40 minutes, bubbles are removed by vacuum, and the lens is injected into a lens mold; the mold containing the prepolymer is placed at 60°C for 8 hours, then raised to 90°C at a rate of 10°C / 30min, and continued to be placed for 2.5 hours. Finally, it is cooled to room temperature and demolded to obtain an ultra-high refractive polyurethane anti-blue light lens.

[0068] Comparative Example 1 Polyurethane lens without light absorber mixture

[0069] 80 g of diphenylmethane diisocyanate and 45 g of a hexathiocyclic trithiol compound (prepared in Example 1) were mixed uniformly, and 0.2 g of steareth-2 phosphate and 0.25 g of dibutyltin dilaurate were added. The mixture was prepolymerized at 45° C. for 40 min, and air bubbles were removed under vacuum before injection into a lens mold. The mold containing the prepolymer was placed at 60° C. for 8 h, then heated to 90° C. at a rate of 10° C. / 30 min, and continued to be placed for 2.5 hours. Finally, it was cooled to room temperature and demolded to obtain an ultra-high refractive polyurethane lens.

[0070] Example 7: Optical performance test of anti-blue light lenses

[0071] The optical properties of the samples prepared in Preparation Example 1, Examples 1-6, and Comparative Example 1 were tested. The transmittance test was performed using a UV-8000 UV-visible photometer from Shanghai Yuanxi Instrument Co., Ltd. The test method was to directly apply the compound monomer to the prism of the UV-visible photometer or place it on the prism to measure the transmittance. The refractive index test was performed using a WZS1 refractometer from Shanghai Optical Instrument Equipment Co., Ltd. The test method was to directly place the lens on the prism of the refractometer or apply it on the prism to measure the refractive index. The test results are shown in Tables 1 and Figure 1 .

[0072] Table 1 Optical performance test results of sample lenses

[0073]

[0074]

[0075] Conclusion: From the detection spectrum curve, it can be seen that the polyurethane anti-blue light lens prepared by the present invention can differentially absorb different blue light spectra of 385-500nm, among which the short-wave blue light transmittance of 385-445nm is less than 23.7%, the long-wave blue light transmittance of 475-500nm is greater than 80.4%, the visible light transmittance of 550-780nm is ≥90%, the ultraviolet light transmittance of 280-380nm is less than 0.01%, and the refractive index is ≥1.76. While maintaining ultra-high refractive index and high transmittance, it has the performance of precisely regulating and protecting blue light of different wavelengths.

Claims

1. An ultra-high refractive polyurethane blue light protection optical material, characterized in that: The material is polymerized from the following components: Component A: isocyanate, 30-50 parts by weight; Component B: 20 ​​to 50 parts by weight of a hexasulfide heterocyclic trithiol compound represented by formula I; and Component C: light absorber mixture, 0.5 to 5 parts by weight; The light absorber mixture is composed of N-vinyl-5-vinyluracil represented by formula A, a UV absorber, a solvent and an acrylate compound, and the weight ratio of the four is (1-3): (1-3): (7-15): (15-50); 2. The ultra-high refractive polyurethane blue light protection optical material according to claim 1, characterized in that: The raw materials further include: 0.2 to 1.5 parts by weight of component D: auxiliary functional additive.

3. The ultra-high refractive polyurethane blue light protection optical material according to claim 1 or 2, characterized in that: The isocyanate is selected from at least one of toluene diisocyanate, triphenylmethane triisocyanate, cyclohexane diisocyanate, diphenylmethane diisocyanate, diphenyl ether diisocyanate, di-4,4'-diisocyanate dicyclohexylmethane, toluene diisocyanate, diethylene diisocyanate, tetramethylene diisocyanate, xylylene diisocyanate, m-xylylene diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, dithiopropyl diisocyanate, trimethylhexamethylene diisocyanate, thiodihexyl diisocyanate, dithiodiethyl diisocyanate, thiodipropyl diisocyanate, lysine triisocyanate, and o-tolidine diisocyanate.

4. The ultra-high refractive polyurethane blue light protection optical material according to claim 1 or 2, characterized in that: The ultraviolet absorber is at least one of UV-9, UV-21, UV-326, UV-327, UV-328, UV-329, UV-360 and UV-928.

5. The ultra-high refractive polyurethane blue light protection optical material according to claim 1 or 2, characterized in that: The solvent is selected from at least one of acetonitrile, chloroform, petroleum ether, n-hexane, dichloromethane, ethyl acetate, tetrahydrofuran, dimethyl sulfoxide, dimethylformamide, dimethylacetamide and methyl pyrrolidone.

6. The ultra-high refractive polyurethane blue light protection optical material according to claim 1 or 2, characterized in that: The acrylic acid ester compound is selected from at least one of methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate, hydroxymethyl methacrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, polyethylene glycol methacrylate, polyethylene glycol dimethacrylate, pentaerythritol tetraacrylate, ethoxylated nonylphenol acrylate, epoxy acrylate, bisphenol A epoxy acrylate and ethoxylated bisphenol A diacrylate.

7. The ultra-high refractive polyurethane blue light protection optical material according to claim 2, wherein: The auxiliary functional agent is at least one of a toner, a release agent, a catalyst, a defoaming agent, an initiator and a diluent.

8. The ultra-high refractive polyurethane blue light protection optical material according to claim 7, characterized in that: The release agent is stearyl alcohol polyether-2 phosphate or isooctyl phosphate, and the amount of the release agent is 0.1 to 0.5% by weight of the isocyanate; The catalyst is selected from one of stannous octoate, dibutyltin dilaurate, dibutyltin dichloride and dibutyltin oxide, and the amount of the catalyst is 0.1-0.5% of the weight of the isocyanate.

9. The method for preparing the ultra-high refractive polyurethane blue light protection optical material according to claim 1, wherein: The method comprises the following steps: I. Stir and mix the raw materials of components A, B and C in proportion; II. Prepolymerize at 35-60°C for 30-60 minutes while removing air bubbles under vacuum, and then inject into a tempered filter lens mold; III. Place the mold containing the prepolymer at 50-80°C for 3-12 hours, then raise the temperature to 80-100°C at a rate of 10°C / 30min, continue to place it for 2-5 hours, and finally cool it to room temperature and demold to obtain the ultra-high refractive polyurethane blue light protection optical material.

10. The method for preparing the ultra-high refractive polyurethane blue light protection optical material according to any one of claims 2 to 8, characterized in that: The method comprises the following steps: I. Stir and mix the raw materials of components A, B and C in proportion; II. Component D is added to the mixture obtained in step I above, prepolymerized at 35 to 60 ° C for 30 to 60 min, while vacuuming to remove bubbles, and injected into a toughened optical material mold; III. Place the mold containing the prepolymer at 50-80°C for 3-12 hours, then raise the temperature to 80-100°C at a rate of (5-15)°C / 30min, continue to place it for 2-5 hours, and finally cool it to room temperature and demold to obtain an ultra-high refractive polyurethane blue light protection optical material.

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