Dyeable anti-blue-ray lens and preparation method thereof

Abstract

Compared with the prior art, the dyeable anti-blue-ray lens adopts the optimal formula: 87.40% of a resin monomer with the refractive index of 1.56, 3.90% of a resin monomer with the refractive index of 1.49, 0.5% of an ultraviolet blocking agent and 8.20% of an initiator, an allyl monomer is selected as a main raw material, new UV powder (the ultraviolet blocking agent Ant i-Bl ue Light Absorber YX410) is added, and the dyeable anti-blue-ray lens is prepared through the steps of preparing the dyeable anti-blue-ray lens with the refractive index of 1.56, the refractive index of 1.49, the refractive index of 1.56, the refractive index of 1.49, the ultraviolet blocking agent and the initiator. On the premise of improving the anti-blue-light performance, the ground color requirement of the lens can be met, meanwhile, the lens also has excellent dyeable performance, and different from the conventional dyeable performance improvement, the lens manufactured according to the formula and the preparation method achieves the dyeable effect.

Description

Technical Field

[0001] The invention relates to the field of resin lens preparation, and in particular to a dyeable blue light protection lens and a preparation method thereof. Background Art

[0002] The current mainstream dyeing processes include direct dyeing of substrates, dyeing after hardening, hard dyeing and coating dyeing processes. Direct dyeing of substrates has the advantages of fast dyeing speed, good dyeing stability, many dyeable colors, slow fading speed and low dyeing cost, and has become the current mainstream dyeing process.

[0003] For example, a Chinese patent with publication number CN115755232A discloses a dyed resin lens, wherein the raw materials of the dyed resin lens are made of the following raw materials in mass fraction: 85-90% of 1.56 refractive index resin monomer, 0-4% of 1.49 refractive index resin monomer, 0.15-0.2% of ultraviolet blocker, 0.05-1% of pigment B, 0.05-1% of pigment R and 8-14% of initiator. The present invention also provides a process for reducing the dyeing defects of the above-mentioned lenses. By adjusting the prepolymerization temperature and the curing procedure, the obtained lenses have excellent dyeing properties, which can greatly reduce the dyeing defects of the blank lenses after processing and improve the qualified rate of dyed lenses.

[0004] Another example is a Chinese patent with publication number CN117761915A, which discloses a resin lens and a preparation process that can effectively improve the anti-aging performance of a 1.56 refractive index resin lens. The 1.56 refractive index resin lens produced by this process has excellent anti-aging performance and can significantly improve the anti-yellowing performance of a 1.56 refractive index resin lens.

[0005] Another example is a Chinese patent with publication number CN117706807A, which discloses a production process for a high-refractive light-based anti-blue light resin lens. The 1.60 refractive index resin lens produced by this process has excellent anti-blue light performance and a relatively low yellow index, which can improve the problem of reduced visual contrast caused by traditional dark-based anti-blue light lenses.

[0006] In summary, there are many disadvantages, which are summarized as follows:

[0007] ① The current mainstream 1.56 blue light protection lenses in the market are made of acrylic materials as the main raw materials. The lenses polymerized from these materials have poor dyeing performance, uneven dyeing, and uncontrollable dyeing depth;

[0008] ② The formula used in the anti-blue light lenses disclosed in the above-mentioned documents can only improve the dyeing performance, but cannot fully achieve the dyeing effect. Summary of the invention

[0009] In view of the deficiencies in the prior art, the present invention provides a tintable anti-blue light lens and a preparation method to solve the above problems.

[0010] To achieve the above objectives, the present invention is implemented through the following technical solutions.

[0011] A dyeable anti-blue light lens, wherein the raw materials of the dyeable anti-blue light lens are made of the following raw materials according to mass fraction: 87.40% of a 1.56 refractive index resin monomer, 3.90% of a 1.49 refractive index resin monomer, 0.5% of an ultraviolet blocker, and 8.20% of an initiator.

[0012] Preferably, the 1.56 refractive index resin monomer is a 1.56CW-55 allyl monomer.

[0013] Preferably, the 1.49 refractive index resin monomer is CR-39 monomer.

[0014] Preferably, the UV blocker is Anti-Blue Light Absorber YX410.

[0015] Preferably, the initiator is diisopropyl peroxydicarbonate (ie, IPP-27(CR)) pre-doped with CR-39 resin monomer at a mass fraction of 27%.

[0016] Preferably, the UV cutoff wavelength of the tintable anti-blue light lens is 398 nm.

[0017] Preferably, the yellow index YI of the tintable blue light blocking lens is 4.8.

[0018] A method for preparing a dyeable blue light blocking lens comprises the following steps:

[0019] S1 monomer preparation: add 1.56 refractive index resin monomer and 1.49 refractive index resin monomer according to the above formula into a vacuum batching tank with stirring and temperature control, then add UV blocker according to the above formula, stir and heat to 40-55°C, stir at constant temperature for 30-60 minutes, then cool to below 35°C, add initiator according to the above formula, continue to cool to below 28°C, stir at constant temperature for 30-90 minutes, then stir for 30-60 minutes under a vacuum degree of less than 1000Pa, degas for 10-30 minutes, complete monomer preparation to obtain a monomer mixture, wherein the stirring rate is 80-100r / min;

[0020] S2 pouring and curing once: the pouring tank is pressurized to 0.1-0.3Mpa with clean compressed air, and a filter of 1.0-3.0μm is connected with a PVC pipe, and then the monomer mixture is injected into a glass module with a center thickness of 6-18mm sealed with a rubber ring or tape through a pouring needle, and then sealed with tape and placed flat with the convex surface facing downward in a curing tray, and placed in a curing furnace, and cured once under a polymerization procedure of 18-42 hours, a heating rate of 1-10℃ / hour, and a maximum temperature of 70-110℃ to form a base resin lens;

[0021] S3 secondary curing: After the lens and the mold are separated, the lens is cut and cleaned according to the specified diameter, and then sent to the curing furnace to complete the secondary curing of the lens under a polymerization program of 2 to 6 hours and a maximum temperature of 100 to 120°C to obtain a standard parameter resin lens;

[0022] S4 lens dyeing: soak the standard parameter resin lens prepared in S3 in a dyeing aqueous solution at a temperature of 85-95°C for 10-20 minutes. When the lens transmittance reaches 20%-30%, stop soaking to obtain a dyed lens, wherein the mass fraction of the dye in the dyeing aqueous solution is 1-3%.

[0023] The invention discloses a dyeable anti-blue light lens and a preparation method. Compared with the prior art, the dyeable anti-blue light lens adopts the best formula: 87.40% of 1.56 refractive index resin monomer, 3.90% of 1.49 refractive index resin monomer, 0.5% of ultraviolet blocker, 8.20% of initiator, and allyl monomer is selected as the main raw material. By adding new UV powder (ultraviolet blocker Anti-Blue Light Absorber YX410), the base color requirements of the lens can be met while improving the anti-blue light performance. At the same time, the lens also has excellent dyeability. Different from the usual improvement of dyeability, the lens produced according to the formula and preparation method achieves a dyeable effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention is a flow chart of the preparation method of the dyeable blue light blocking lens. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Example 1

[0027] A dyeable anti-blue light lens is made of the following raw materials according to mass fraction: 87.40% of a 1.56 refractive index resin monomer, 3.90% of a 1.49 refractive index resin monomer, 0.5% of an ultraviolet blocker, and 8.20% of an initiator.

[0028] The 1.56 refractive index resin monomer is 1.56CW-55 monomer provided by Korea Changyou Company.

[0029] The 1.49 refractive index resin monomer is CR-39 monomer provided by PPG Company of the United States.

[0030] The UV blocker is Anti-Blue Light Absorber YX410 provided by Danyang Changyou International Trading Company.

[0031] The initiator is 27% pre-doped diisopropyl peroxydicarbonate (ie IPP-27(CR)) with CR-39 resin monomer, and is 27% pre-mixed IPP provided by Changshu Nissin Chemical Co., Ltd.

[0032] The UV cut-off wavelength of the tintable anti-blue light lens is 398nm.

[0033] The yellow index YI of the tintable blue light protection lens is 4.8.

[0034] A method for preparing a dyeable blue light blocking lens comprises the following steps:

[0035] S1 monomer preparation: add 1.56 refractive index resin monomer and 1.49 refractive index resin monomer according to the above formula into a vacuum batching tank with stirring and temperature control, then add UV blocker according to the above formula, stir and heat to 40-55°C, stir at constant temperature for 30-60 minutes, then cool to below 35°C, add initiator according to the above formula, continue to cool to below 28°C, stir at constant temperature for 30-90 minutes, then stir for 30-60 minutes under a vacuum degree of less than 1000Pa, degas for 10-30 minutes, complete monomer preparation to obtain a monomer mixture, wherein the stirring rate is 80-100r / min;

[0036] S2 pouring and curing once: the pouring tank is pressurized to 0.1-0.3Mpa with clean compressed air, and a filter of 1.0-3.0μm is connected with a PVC pipe, and then the monomer mixture is injected into a glass module with a center thickness of 6-18mm sealed with a rubber ring or tape through a pouring needle, and then sealed with tape and placed flat with the convex surface facing downward in a curing tray, and placed in a curing furnace, and cured once under a polymerization procedure of 18-42 hours, a heating rate of 1-10℃ / hour, and a maximum temperature of 70-110℃ to form a base resin lens;

[0037] S3 secondary curing: After the lens and the mold are separated, the lens is cut and cleaned according to the specified diameter, and then sent to the curing furnace to complete the secondary curing of the lens under a polymerization program of 2 to 6 hours and a maximum temperature of 100 to 120°C to obtain a standard parameter resin lens;

[0038] S4 lens dyeing: soak the standard parameter resin lens prepared in S3 in a dyeing aqueous solution at a temperature of 85-95°C for 10-20 minutes. When the lens transmittance reaches 20%-30%, stop soaking to obtain a dyed lens, wherein the mass fraction of the dye in the dyeing aqueous solution is 1-3%.

[0039] The above formula is shown in Table 1-1 below:

[0040] Table 1-1

[0041]

[0042] Comparative Example 1

[0043] Based on the assumption that other technical features remain unchanged, the raw materials for the tintable blue light protection lenses are made of the following raw materials in mass fractions: 87.50% of 1.56 refractive index resin monomer, 4.30% of 1.49 refractive index resin monomer, 0.2% of UV blocker, and 8.00% of initiator.

[0044] The above formula is shown in Table 1-2 below:

[0045] Table 1-2

[0046]

[0047] Comparative Example 2

[0048] Based on the assumption that other technical features remain unchanged, the raw materials for the tintable anti-blue light lenses are made of the following raw materials in mass fractions: 86.00% of 1.56 refractive index resin monomer, 4.00% of 1.49 refractive index resin monomer, 1% of UV blocker, and 9.00% of initiator.

[0049] The above formula is shown in Table 1-3 below:

[0050] Table 1-3

[0051]

[0052] Comparative Example 3

[0053] Based on the assumption that other technical features remain unchanged, the raw materials for the tintable anti-blue light lenses are made of the following raw materials in mass fractions: 86.00% of 1.56 refractive index resin monomer, 4.00% of 1.49 refractive index resin monomer, 1% of UV blocker, and 9.00% of initiator.

[0054] The above formula is shown in Table 1-4 below:

[0055] Table 1-4

[0056]

[0057] Comparative Example 4

[0058] Based on the assumption that other technical features remain unchanged, the raw materials for the tinted blue light blocking lenses are made of the following raw materials in mass fractions: 86.00% M-41, a 1.56 refractive index resin monomer, 3.00% UB-60, a release agent, 3%, a polymerizer, and 9.00% V65, an initiator.

[0059] The above formula is shown in Table 1-5 below:

[0060] Table 1-5

[0061] 1.56 monomer Release agent Polymerization agent Initiator M-41 UB-60 V65 99.2％ 3％ 3‰ 2‰

[0062] The following conclusions were obtained based on the various formula tests of the above-mentioned Example 1 and Comparative Examples 1-4, as shown in Tables 1-6 below. Overall, the best formula is Example 1, with a UV cutoff wavelength of 398 nm and a yellowness index YI of 4.8:

[0063] Table 1-6

[0064] project Initiator UV Blocker YI <![CDATA[UVCut / nm ]]> Dyeing performance Example 1 8.20％ 0.5％ 4.8 398 Uniform colorless flower, good stability Comparative Example 1 8.00％ 0.2％ 3.3 385 Uniform colorless flower, good stability Comparative Example 2 9.00％ 1.0％ 8.6 402 Uniform colorless flower, good stability Comparative Example 3 8.50％ 0.8％ 6.2 400 Uniform colorless flower, good stability Comparative Example 4 3.7 397 Color spots, unstable depth

[0065] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0066] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tintable blue light blocking lens, characterized in that: The raw materials of the dyeable anti-blue light lens are made of the following raw materials according to mass fraction: 87.40% of 1.56 refractive index resin monomer, 3.90% of 1.49 refractive index resin monomer, 0.5% of ultraviolet blocker, and 8.20% of initiator.

2. The tintable blue light blocking lens according to claim 1, characterized in that: The 1.56 refractive index resin monomer is a 1.56CW-55 allyl monomer.

3. The tintable blue light blocking lens according to claim 1, characterized in that: The 1.49 refractive index resin monomer is CR-39 monomer.

4. The tintable blue light blocking lens according to claim 1, characterized in that: The ultraviolet blocking agent is Anti-BlueLight Absorber YX410.

5. The tintable blue light blocking lens according to claim 1, characterized in that: The initiator is diisopropyl peroxydicarbonate (ie IPP-27 (CR)) pre-doped with CR-39 resin monomer with a mass fraction of 27%.

6. The tintable blue light blocking lens according to claim 1, characterized in that: The UV cut-off wavelength of the tintable anti-blue light lens is 398nm.

7. The tintable blue light blocking lens according to claim 1, characterized in that: The yellow index YI of the tintable blue light protection lens is 4.

8.

8. A method for preparing the dyeable blue light blocking lens according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1 monomer preparation: add 1.56 refractive index resin monomer and 1.49 refractive index resin monomer according to the above formula into a vacuum batching tank with stirring and temperature control, then add UV blocker according to the above formula, stir and heat to 40-55°C, stir at constant temperature for 30-60 minutes, then cool to below 35°C, add initiator according to the above formula, continue to cool to below 28°C, stir at constant temperature for 30-90 minutes, then stir for 30-60 minutes under a vacuum degree of less than 1000Pa, degas for 10-30 minutes, complete monomer preparation to obtain a monomer mixture, wherein the stirring rate is 80-100r / min; S2 pouring and curing once: the pouring tank is pressurized to 0.1-0.3Mpa with clean compressed air, and a filter of 1.0-3.0μm is connected with a PVC pipe, and then the monomer mixture is injected into a glass module with a center thickness of 6-18mm sealed with a rubber ring or tape through a pouring needle, and then sealed with tape and placed flat with the convex surface facing downward in a curing tray, and placed in a curing furnace, and cured once under a polymerization procedure of 18-42 hours, a heating rate of 1-10℃ / hour, and a maximum temperature of 70-110℃ to form a base resin lens; S3 secondary curing: After the lens and the mold are separated, the lens is cut and cleaned according to the specified diameter, and then sent to the curing furnace to complete the secondary curing of the lens under a polymerization program of 2 to 6 hours and a maximum temperature of 100 to 120°C to obtain a standard parameter resin lens; S4 lens dyeing: soak the standard parameter resin lens prepared in S3 in a dyeing aqueous solution at a temperature of 85-95°C for 10-20 minutes. When the lens transmittance reaches 20%-30%, stop soaking to obtain a dyed lens, wherein the mass fraction of the dye in the dyeing aqueous solution is 1-3%.

Images