Anti-static pressure monomer for resin lens KR54M as well as preparation method and application of anti-static pressure monomer

By introducing perfluorooctyl ethyl ester segments into resin lenses using KR54M antistatic monomers to achieve spontaneous migration and thus enabling non-destructive demolding, and by increasing the high refractive index through cinnamon ester segments, the problem of resin lens demolding was solved, thereby improving production efficiency and lens quality.

CN121426673APending Publication Date: 2026-01-30JIANGSU XINDA FINE CHEM TECH CO LTD
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Patent Information

Application Number
CN202511574229.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-31
Publication Date
2026-01-30

AI Technical Summary

Technical Problem

Existing resin lenses are difficult to demold, resulting in low production efficiency, high scrap rate, and inconsistent surface smoothness, which affects the quality of subsequent coating. Furthermore, uneven application of existing release agents can contaminate the mold and the lens.

Method used

The resin lens uses KR54M antistatic monomer, which spontaneously migrates to the lens-mold interface during the thermal polymerization process to form a stable weak interface layer, achieving non-destructive demolding. At the same time, the cinnamic ester segment is introduced to improve the high refractive index function of the lens.

Benefits of technology

It achieves non-destructive demolding, improves production efficiency, reduces scrap rate, and provides a smooth lens surface, which provides a good coating substrate, enhances film adhesion, and has anti-glare performance with a high refractive index of 1.60.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a resin lens KR54M anti-static pressure monomer as well as a preparation method and application thereof, and belongs to the technical field of resin lenses. The invention relates to a resin lens, which is prepared from the following components in parts by weight: 60 to 100 parts of polyurethane acrylate prepolymer, 35 to 60 parts of diallyl phthalate, 2 to 10 parts of resin lens KR54M anti-static pressure monomer, 1 to 3 parts of photoinitiator and 0.5 to 1 part of ultraviolet light absorber. The problem of difficult demolding is fundamentally solved, the efficiency is improved, the rejection rate is reduced, and green production (without a demolding agent) is realized. The resin lens is excellent in quality, the lens body is free of release agent pollution, a perfect substrate is provided for subsequent coating, and the adhesive force of a film layer is remarkably enhanced. According to the invention, internal demoulding and a high refractive index function are successfully integrated into one molecule, so that multi-functionalization of the material is realized.
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Description

Technical Field

[0001] This invention relates to a resin lens KR54M antistatic monomer, its preparation method and application, belonging to the field of resin lens technology. Background Technology

[0002] Eyeglasses are subjected to various external pressures during wear, including pressure from the head, the weight of the glasses themselves, and vibrations from daily activities. If eyeglasses cannot effectively withstand these static pressures, it can lead to frame deformation, lens displacement, or breakage, thus affecting vision and comfort. Therefore, static pressure resistance is crucial for eyeglasses.

[0003] The primary purpose of static pressure resistance in eyeglasses is to ensure that they can withstand external pressure during use, maintaining their structural and functional stability. Static pressure resistance is a crucial consideration in the design and manufacturing of eyeglasses, aiming to ensure they can withstand various external pressures during use, maintaining their structural and functional stability, thereby providing a better wearing experience and vision protection.

[0004] Currently, MR-8™ lenses are among the best antistatic lenses available. MR-8™ lenses excel in antistatic properties, absorbing external energy and ensuring the wearer's comfort and safety. MR-8™ lenses significantly outperform materials like acrylic in tensile strength, demonstrating superior strength and durability. Notably, they only break when subjected to tensile forces up to 72kg, showcasing exceptional performance.

[0005] The main component of MR-8™ lenses is polyurethane (PU) resin. While PU possesses excellent elasticity, tensile properties, and hydrostatic pressure resistance, its abrasion resistance is relatively poor. Furthermore, PU resin is a thermosetting material, and the manufacturing of thermosetting resin lenses typically employs a casting molding method: a monomer mixture is injected into a cavity consisting of a glass mold and adhesive tape, cured through thermal polymerization, and then demolded. This process presents several problems, including difficulty in demolding and lens damage. The cured resin adheres excessively to the mold surface, requiring significant external force for demolding. This not only reduces production efficiency but also increases the risk of edge chipping, scratches, and even breakage of the lens, resulting in a lower yield. Current technology heavily relies on externally sprayed release agents, but uneven application of these agents leads to inconsistent lens surface smoothness, affecting subsequent coating quality, and their residue can contaminate both the mold and the lens.

[0006] Therefore, there is an urgent need for an antistatic monomer that can achieve internal demolding, solves the problem of difficult demolding, improves efficiency, reduces scrap rate, and is applicable to high refractive index of 1.60, as well as its preparation method and application. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a resin lens KR54M antistatic pressure monomer that can achieve non-destructive demolding, and can enable the resin lens to have anti-glare and high refractive index functions, and can achieve a high refractive index of 1.60.

[0008] Meanwhile, the present invention provides a method for preparing KR54M antistatic monomer for resin lenses.

[0009] Meanwhile, this invention provides the application of KR54M antistatic monomer resin lens in 1.60 high refractive index antistatic easy-release lens.

[0010] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A resin lens KR54M antistatic monomer has the following chemical structural formula:

[0011] Chemical formula: C 23 H 15 F 17 O4; English name: 2-Butenedioic acid (2 E )-, 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl 3-phenyl-2-propenyl ester; Chinese name: (2E)-2-butenedioic acid 3-phenyl-2-propenyl ester 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecyl ester.

[0012] A method for preparing a KR54M antistatic monomer for resin lenses includes the following steps: Step 1: Dissolve 2-perfluorooctylethanol and butenadic acid in a 1:1 molar ratio in THF solvent, where the mass of THF solvent is 50 to 100 times the mass of butenadic acid. Carry out the condensation reaction at 100 to 150°C using concentrated sulfuric acid as a catalyst, where the mass of concentrated sulfuric acid is 0.3 to 0.6 times the mass of butenadic acid. The reaction time is 2 to 5 hours to obtain reaction solution one. Step 2: Add cinnamyl alcohol in a 1:1 molar ratio with butenatic acid to reaction solution 1, and carry out a second condensation at 100~150℃ for 3~6 hours to obtain reaction solution 2. Step 3: After the reaction is completed, the reaction solution 2 is dried by thin-film evaporation. The dried product is ground into a fine powder and then mixed with water in an amount equivalent to 5 to 20 times the mass of the fine powder. After mixing, petroleum ether in an amount equivalent to 1 to 2 times the mass of water is added for extraction at least 3 times, with each extraction lasting at least 5 hours. The petroleum ether extracts are combined, rotary evaporated, and then dried to obtain the KR54M antistatic monomer for resin lenses.

[0013] Preferably, the fine powder in step three is powder that has passed through a sieve of 100-200 mesh.

[0014] (2E)-2-butenedioic acid 3-phenyl-2-propenyl ester 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecyl ester standard (CAS Registration No.: 86716-01-0) was purchased and subjected to TLC and thin-layer chromatography analysis with the resin lens KR54M antistatic monomer of the present invention. The Rf value of the resin lens KR54M antistatic monomer of the present invention is consistent with that of the standard.

[0015] The resin lens composition of the present invention comprises the following components: polyurethane acrylate prepolymer: 60-100 parts by weight, diallyl phthalate: 35-60 parts by weight, resin lens KR54M antistatic monomer: 2-10 parts by weight, photoinitiator Darocur 1173: 1-3 parts by weight, and ultraviolet absorber: 0.5-1 parts by weight.

[0016] The method for preparing the polyurethane acrylate prepolymer of the present invention adopts the method for preparing the polyurethane acrylate prepolymer in the prior art CN 112457768 B - a method for preparing a light-curing spray paint and its preparation method.

[0017] The ultraviolet absorber includes any one of 2-hydroxyphenyltriethyl ketone, 2-hydroxyphenol, and 2,4-dihydroxyphenol.

[0018] The method for preparing the resin lens of the present invention includes the following steps: Step 1, clean the mold; Step 2: Weigh the raw materials according to their weight proportions; Step 3, Raw material mixing: Mix all the above components evenly under light-protected conditions, and then degas under vacuum to obtain a mixture; Step 4, Pouring: Preheat the clean, dry mold to 50-80℃; pour the mixture into the mold cavity, and then seal it with tape; Step 5, Curing: Place the mold in a UV curing oven, first at 100-500mW / cm². 2 Pre-treat under ultraviolet radiation intensity of 2-5 min, followed by treatment under ultraviolet radiation intensity of 2000-3000 mW / cm² for 5-8 min, and finally treatment under ultraviolet radiation intensity of 10-50 mW / cm².2 Treat under ultraviolet radiation intensity for 1~2 minutes; UV curing temperature is 70~100℃; Step 6, Demolding: After curing and cooling, use a mold opener to remove the tape on the mold. Without any external mold release agent, the resin lens can be easily separated from the mold, leaving the resin lens with intact edges and a smooth surface. Step 7, Post-processing: Cleaning and inspection are performed to obtain the finished product.

[0019] The mold is preferably a glass mold.

[0020] Preferably, the cleaning in step 7 is to wash and dry with clean water.

[0021] Application of a resin lens KR54M antistatic monomer in 1.60 high refractive index antistatic easy-release lens.

[0022] Application of a resin lens KR54M antistatic monomer in antistatic eyeglasses, resin lenses, and pressure-resistant optical lenses.

[0023] A resin lens is prepared by the resin lens preparation method of the present invention.

[0024] Compared with the prior art, the beneficial effects of the present invention are: In the KR54M antistatic monomer of this invention, the butadiene ester segment can participate in the thermal polymerization and curing reaction of polyurethane (PU) during the preparation of the resin lens, becoming a component of the lens network. During the thermal polymerization process, the perfluorooctyl ethyl ester segment of the KR54M antistatic monomer, as a surface-active component, is a group with extremely low surface energy. Driven by thermodynamics, it spontaneously accumulates on the surface in contact with the mold during the thermal polymerization process, forming a natural release layer, thereby achieving non-destructive demolding. That is, the perfluorooctyl ethyl ester segment spontaneously migrates to the lens-mold interface, forming a stable, weak interface layer, achieving a self-demolding effect. The cinnamon ester segment of the KR54M antistatic monomer, due to the introduction of a high-refractive-index aromatic ring, gives the final lens body anti-glare and high refractive index functions, achieving a high refractive index of 1.60.

[0025] This invention fundamentally solves the problem of difficult demolding, improves efficiency, reduces scrap rate, and achieves green production (no mold release agent required). The resin lenses produced by this invention are of excellent quality, with no mold release agent contamination on the lens body, providing a perfect substrate for subsequent coating and significantly enhancing film adhesion. This invention successfully integrates internal demolding and high refractive index functions into a single molecule, achieving multifunctionality of the material. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to specific embodiments. The following embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Example 1

[0027] The chemical structure of KR54M antistatic monomer for resin lenses is as follows: .

[0028] The preparation method of KR54M antistatic monomer for resin lenses includes the following steps: Step 1: Dissolve 2-perfluorooctylethanol and butenadic acid in THF solvent at a molar ratio of 1:1. The mass of THF solvent is equivalent to 80 times the mass of butenadic acid. Under 120°C, carry out the condensation reaction with concentrated sulfuric acid as a catalyst. The mass of concentrated sulfuric acid is equivalent to 0.5 times the mass of butenadic acid. The reaction time is 3 hours to obtain reaction solution 1. Step 2: Add cinnamyl alcohol in a 1:1 molar ratio with butenatic acid to reaction solution 1, and carry out a second condensation at 120°C for 4 hours to obtain reaction solution 2. Step 3: After the reaction is completed, the reaction solution 2 is dried by thin-film evaporation. The dried product is ground into a fine powder and then mixed with water in an amount equivalent to 10 times the mass of the fine powder. After mixing, petroleum ether in an amount equivalent to 1 times the mass of water is added for extraction 3 times, with each extraction time being 5 hours. The petroleum ether extracts are combined, rotary evaporated, and then dried to obtain the resin lens KR54M antistatic monomer.

[0029] Preferably, in step three, the fine powder is powder that has passed through a 200-mesh sieve.

[0030] A resin lens comprises the following components: 70 parts by weight of polyurethane acrylate prepolymer, 40 parts by weight of diallyl phthalate, 5 parts by weight of resin lens KR54M antistatic monomer, 3 parts by weight of photoinitiator, and 0.5 parts by weight of ultraviolet absorber.

[0031] Preferably, the photoinitiator is Darocur 1173.

[0032] Preferably, the ultraviolet absorber is 2-hydroxyphenyltriethyl ketone.

[0033] A method for preparing a resin lens includes the following steps: Step 1, clean the mold; Step 2: Weigh the raw materials according to their weight proportions; Step 3, Raw material mixing: Mix all the above raw materials evenly under light-protected conditions, and then degas under vacuum to obtain a mixture; Step 4, Pouring: Preheat the clean, dry mold to 60°C; pour the mixture into the mold cavity, and then seal it with tape; Step 5, Curing: Place the mold in a UV curing oven, first at 300mW / cm². 2 Pre-treated for 3 minutes under ultraviolet radiation intensity of 2500 mW / cm², followed by 6 minutes under ultraviolet radiation intensity of 2500 mW / cm², and finally under 40 mW / cm². 2 Treated under ultraviolet radiation intensity for 1 minute; UV curing temperature was 80℃; Step 6, Demolding: After curing and cooling, use a mold opener to remove the tape on the mold. Without any external mold release agent, the resin lens can be easily separated from the mold, leaving the resin lens with intact edges and a smooth surface. Step 7, Post-processing: Cleaning and inspection are performed to obtain the finished product.

[0034] Preferably, in step 1, the mold is a glass mold.

[0035] Preferably, in step 7, the cleaning is performed by washing with clean water and then drying.

[0036] This embodiment describes the application of KR54M antistatic monomer in 1.60 high refractive index antistatic easy-release resin lenses. Example 2

[0037] The chemical structure of KR54M antistatic monomer for resin lenses is as follows: .

[0038] The preparation method of KR54M antistatic monomer for resin lenses includes the following steps: Step 1: Dissolve 2-perfluorooctylethanol and butenadic acid in THF solvent at a molar ratio of 1:1. The mass of THF solvent is equivalent to 50 times the mass of butenadic acid. Under 100°C, carry out the condensation reaction with concentrated sulfuric acid as a catalyst. The mass of concentrated sulfuric acid is equivalent to 0.3 times the mass of butenadic acid. The reaction time is 2 hours to obtain reaction solution 1. Step 2: Add cinnamyl alcohol with a molar ratio of 1:1 to butenadic acid to reaction solution 1, and carry out a second condensation at 100°C for 3 hours to obtain reaction solution 2. Step 3: After the reaction is completed, the reaction solution 2 is dried by thin-film evaporation. The dried product is ground into a fine powder and then mixed with water in an amount equivalent to 5 times the mass of the fine powder. After mixing, petroleum ether in an amount equivalent to 2 times the mass of water is added for extraction 4 times, with each extraction time being 6 hours. The petroleum ether extracts are combined, rotary evaporated, and then dried to obtain the resin lens KR54M antistatic monomer.

[0039] Preferably, in step three, the fine powder is powder that has passed through a 100-mesh sieve.

[0040] A resin lens comprises the following components: 60 parts by weight of polyurethane acrylate prepolymer, 35 parts by weight of diallyl phthalate, 2 parts by weight of resin lens KR54M antistatic monomer, 2 parts by weight of photoinitiator, and 1 part by weight of ultraviolet absorber.

[0041] Preferably, the photoinitiator is Darocur 1173.

[0042] Preferably, the ultraviolet absorber is 2,4-dihydroxyphenol.

[0043] A method for preparing a resin lens includes the following steps: Step 1, clean the mold; Step 2: Weigh the raw materials according to their weight proportions; Step 3, Raw material mixing: Mix all the above raw materials evenly under light-protected conditions, and then degas under vacuum to obtain a mixture; Step 4, Pouring: Preheat the clean, dry mold to 50°C; pour the mixture into the mold cavity, and then seal it with tape; Step 5, Curing: Place the mold in a UV curing oven, first at 100mW / cm². 2 Pre-treated under ultraviolet radiation intensity of 2000 mW / cm² for 2 min, followed by treatment under ultraviolet radiation intensity of 2000 mW / cm² for 5 min, and finally treated under ultraviolet radiation intensity of 10 mW / cm². 2 Treated under ultraviolet radiation intensity for 2 minutes; UV curing temperature was 70℃; Step 6, Demolding: After curing and cooling, use a mold opener to remove the tape on the mold. Without any external mold release agent, the resin lens can be easily separated from the mold, leaving the resin lens with intact edges and a smooth surface. Step 7, Post-processing: Cleaning and inspection are performed to obtain the finished product.

[0044] Preferably, in step 1, the mold is a glass mold.

[0045] Preferably, in step 7, the cleaning is performed by washing with clean water and then drying.

[0046] This embodiment describes the application of KR54M antistatic monomer in 1.60 high refractive index antistatic easy-release resin lenses. Example 3

[0047] The chemical structure of KR54M antistatic monomer for resin lenses is as follows: .

[0048] The preparation method of KR54M antistatic monomer for resin lenses includes the following steps: Step 1: Dissolve 2-perfluorooctylethanol and butenadic acid in THF solvent at a molar ratio of 1:1. The mass of THF solvent is equivalent to 100 times the mass of butenadic acid. Under conditions of 150°C, carry out the condensation reaction with concentrated sulfuric acid as a catalyst. The mass of concentrated sulfuric acid is equivalent to 0.6 times the mass of butenadic acid. The reaction time is 5 hours to obtain reaction solution 1. Step 2: Add cinnamyl alcohol with a molar ratio of 1:1 to butenadic acid to reaction solution 1, and carry out a second condensation at 150°C for 6 hours to obtain reaction solution 2. Step 3: After the reaction is completed, the reaction solution 2 is dried by thin-film evaporation. The dried product is ground into a fine powder and then mixed with water in an amount equivalent to 20 times the mass of the fine powder. After mixing, petroleum ether in an amount equivalent to 2 times the mass of water is added for extraction 3 times, with each extraction time being 6 hours. The petroleum ether extracts are combined, rotary evaporated, and then dried to obtain the resin lens KR54M antistatic monomer.

[0049] Preferably, in step three, the fine powder is powder that has passed through a 100-mesh sieve.

[0050] A resin lens comprises the following components: 100 parts by weight of polyurethane acrylate prepolymer, 60 parts by weight of diallyl phthalate, 10 parts by weight of resin lens KR54M antistatic monomer, 1 part by weight of photoinitiator, and 0.5 parts by weight of ultraviolet absorber.

[0051] Preferably, the photoinitiator is Darocur 1173.

[0052] Preferably, the ultraviolet absorber is 2-hydroxyphenol.

[0053] A method for preparing a resin lens includes the following steps: Step 1, clean the mold; Step 2: Weigh the raw materials according to their weight proportions; Step 3, Raw material mixing: Mix all the above raw materials evenly under light-protected conditions, and then degas under vacuum to obtain a mixture; Step 4, Pouring: Preheat the clean, dry mold to 80°C; pour the mixture into the mold cavity, and then seal it with tape; Step 5, Curing: Place the mold in a UV curing oven, first at 500mW / cm². 2 Pre-treated under ultraviolet radiation intensity of 5 min, followed by treatment under ultraviolet radiation intensity of 3000 mW / cm² for 8 min, and finally treated under ultraviolet radiation intensity of 50 mW / cm². 2 Treated under ultraviolet radiation intensity for 1.5 min; UV curing temperature was 100℃; Step 6, Demolding: After curing and cooling, use a mold opener to remove the tape on the mold. Without any external mold release agent, the resin lens can be easily separated from the mold, leaving the resin lens with intact edges and a smooth surface. Step 7, Post-processing: Cleaning and inspection are performed to obtain the finished product.

[0054] Preferably, in step 1, the mold is a glass mold.

[0055] Preferably, in step 7, the cleaning is performed by washing with clean water and then drying.

[0056] This embodiment describes the application of KR54M antistatic monomer in 1.60 high refractive index antistatic easy-release resin lenses.

[0057] Comparative Example 1

[0058] MR-8™ lenses.

[0059] Comparative Example 2

[0060] The only difference between this comparative example and Example 1 is that: The only difference between this comparative example and Example 1 is that the resin lens KR54M antistatic monomer in a resin lens is replaced with an existing release agent: polydimethylsiloxane (PDMS).

[0061] Comparative Example 3

[0062] The only difference between this comparative example and Example 1 is that: Step 5, Curing: Place the mold in a UV curing oven, first at 300mW / cm². 2 Pre-treat under UV irradiation intensity for 3 min, then treat under UV irradiation intensity of 2500 mW / cm² for 6 min; UV curing temperature is 80℃.

[0063] Comparative Example 4

[0064] The only difference between this comparative example and Example 1 is that: Step 5, Curing: Place the mold in a UV curing oven, first treat it under UV irradiation intensity of 2500mW / cm² for 6 minutes, and finally treat it under UV irradiation intensity of 40mW / cm². 2 Treat under ultraviolet radiation intensity for 1 minute; UV curing temperature is 80℃.

[0065] Comparative Example 5

[0066] The only difference between this comparative example and Example 1 is that: Step 5, Curing: Place the mold in a UV curing oven, first at 50mW / cm². 2Pre-treated for 3 minutes under ultraviolet radiation intensity of 1500 mW / cm², followed by 6 minutes under ultraviolet radiation intensity of 1500 mW / cm², and finally under 5 mW / cm². 2 Treat under ultraviolet radiation intensity for 1 minute; UV curing temperature is 80℃.

[0067] Comparative Example 6

[0068] The only difference between this comparative example and Example 1 is that: Step 5, Curing: Place the mold in a UV curing oven, first at 800mW / cm². 2 Pre-treated for 3 min under ultraviolet radiation intensity, followed by 6 min under ultraviolet radiation intensity of 3500 mW / cm², and finally treated under 60 mW / cm² ultraviolet radiation intensity. 2 Treat under ultraviolet radiation intensity for 1 minute; UV curing temperature is 80℃.

[0069] The test results of each embodiment and comparative example are shown in Table 1 below.

[0070] Table 1 Test Results Data

[0071] The demolding force is based on Comparative Example 1, which is defined as 100% and requires a relatively large force.

[0072] The refractive index performance was tested according to QB / T 2506-2017 "Optical Resin Lenses for Eyeglasses".

[0073] Hardness testing was conducted according to GB / T 6739-2006 "Paints and Varnishes - Determination of Hardness of Paint Films by Pencil Method".

[0074] It should be understood that, in order to simplify this disclosure and aid in understanding one or more of the various aspects of the invention, features of the invention are sometimes grouped together in a single embodiment or description thereof in the above description of exemplary embodiments of the invention. However, this method of disclosure should not be interpreted as reflecting an intention that the claimed invention requires more features than expressly recited in each claim. Rather, as reflected in the claims, inventive aspects lie in fewer than all the features of the foregoingly disclosed embodiments. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the invention.

[0075] Although the invention has been described with reference to a limited number of embodiments, those skilled in the art will understand from the foregoing description that other embodiments are conceivable within the scope of the invention described herein. Furthermore, it should be noted that the language used in this specification has been chosen primarily for readability and instructional purposes, and not for the purpose of interpreting or limiting the subject matter of the invention. Therefore, many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the appended claims. The disclosure of the invention is illustrative and not restrictive, and the scope of the invention is defined by the appended claims.

[0076] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A resinous ophthalmic lens KR54M anti-static monomer characterized in that, The chemical structural formula is as follows: 。 2. The method for preparing the KR54M antistatic monomer for resin lenses according to claim 1, characterized in that, The method comprises the following steps: Step one: 2-perfluorooctylethanol and butene diacid in a molar ratio of 1:1 are dissolved in THF solvent, the mass of THF solvent is 50-100 times that of butene diacid, condensation reaction is carried out at 100-150 DEG C with concentrated sulfuric acid as a catalyst, the mass of concentrated sulfuric acid is 0.3-0.6 times that of butene diacid, and the reaction time is 2-5 h to obtain reaction liquid one; Step two: cinnamyl alcohol in a molar ratio of 1:1 with butene diacid is added to reaction liquid one, and the second condensation is carried out at 100-150 DEG C for 3-6 h to obtain reaction liquid two; Step three: after the reaction is completed, reaction liquid two is dried by a thin film evaporation method, the dried product is ground into fine powder, and then mixed with water in an amount of 5-20 times that of the fine powder, after mixing, petroleum ether in an amount of 1-2 times that of water is added for extraction for at least 3 times, each time for at least 5 h, the petroleum ether extraction liquid is combined, and then dried after rotary evaporation to obtain the resin lens KR54M anti-static pressure monomer.

3. The preparation method according to claim 2, characterized in that, In step three, the fine powder is a powder passing through a 100-200 mesh sieve.

4. A resin lens characterized by, The resin lens KR54M anti-static pressure monomer comprises the following components in parts by weight: polyurethane acrylate prepolymer: 60-100 parts, diallyl phthalate: 35-60 parts, the resin lens KR54M anti-static pressure monomer as claimed in claim 1: 2-10 parts, photoinitiator: 1-3 parts, and ultraviolet absorber: 0.5-1 part.

5. The resinous ophthalmic lens of claim 4, wherein, The photoinitiator comprises Darocur 1173.

6. The resinous ophthalmic lens of claim 4, wherein, The ultraviolet absorber comprises any one of 2-hydroxyphenyl triethyl ketone, 2-hydroxyphenol, and 2,4-dihydroxyphenol.

7. The method of claim 4, 5 or 6, wherein the lens is a resin lens. The method comprises the following steps: Step 1: cleaning the mold; Step 2: weighing the raw materials according to the parts by weight; Step 3: mixing the raw materials: mixing all the raw materials uniformly under light-proof conditions and vacuum degassing to obtain a mixed liquid; Step 4: pouring: preheating the clean and dry mold to 50-80 DEG C; pouring the mixed liquid into the cavity of the mold, and then sealing with adhesive tape; Step 5, curing: the mold is put into a UV curing oven, first pretreated for 2~5 min under a UV irradiation intensity of 100-500 mW / cm 2 , then treated for 5~8 min under a UV irradiation intensity of 2000~3000 mW / cm², and finally treated for 1~2 min under a UV irradiation intensity of 10-50 mW / cm 2 ; the UV curing temperature is 70~100℃; Step 6: demolding: after curing is completed, after cooling, the adhesive tape on the mold is removed by using a mold opener, and the resin lens can be easily separated from the mold without any external demolding agent, the edge of the resin lens is complete, and the surface is smooth; Step 7: post-processing: cleaning and inspection are performed to obtain the finished product.

8. The preparation method according to claim 7, characterized in that, In step 1, the mold is a glass mold.

9. The preparation method according to claim 7, characterized in that, In step 7, the cleaning is cleaning with clean water and drying.

10. Application of the resin lens KR54M anti-static pressure monomer in claim 1 in a 1.60 high-refractive anti-static pressure easy-to-demold resin lens.

Citation Information

Patent Citations

  • A UV-curable spray paint and its preparation method

    CN112457768B