Dyeing solution for optical resin, dyed optical resin and preparation method and application of dyed optical resin

Abstract

The invention provides a dyeing solution for optical resin, dyed optical resin and a preparation method and application thereof, the dyeing solution for optical resin comprises water, a disperse dye, a swelling agent, an emulsifying dispersant, a homogenizing agent and an affinity agent, and through the synergistic cooperation of the components, especially through the addition of the affinity agent to be matched with other components, the dyeing solution for optical resin is obtained. The dyeing solution for the optical resin has an excellent dyeing effect on the optical resin, effective coloring of various optical resins can be realized at a low dyeing temperature, the application range is very wide, the resin obtained through dyeing has a high blackness value, low light transmittance and small vector variation, and the application range is wide. Meanwhile, the physical and chemical properties of the optical resin are not influenced, and the optical resin is very suitable for being applied to high-end lenses with higher extinction requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of dyeing liquid, and in particular relates to a dyeing liquid for optical resin, a dyed optical resin, and a preparation method and application thereof. Background Art

[0002] When the optical lens is assembled into a module, the coated area in the middle is the imaging part, and the uncoated area on the outside is the structural part, which is used to assemble with fixtures and flanges. However, some light will enter this area and enter the imaging light path again after multiple reflections, causing stray light interference and seriously affecting the imaging quality.

[0003] In order to reduce the interference of stray light and improve the imaging quality, the current common improvement method is to sandblast, ink, black plate the uncoated area of ​​the lens; among them, surface sandblasting requires the use of more auxiliary equipment and is costly; ink coating and black plating have harsh process conditions, first of all, it is necessary to dig a groove on the lens, and then ink coating, which requires the improvement of the structure of the fixture and flange, which is often limited by the mechanical structure design, and can only operate on a single lens at a time, which is inefficient.

[0004] Compared with surface sandblasting, ink coating and black plating technology, impregnation is an ideal, low-cost and high-efficiency method. By dyeing the non-effective diameter part of the lens, part of the light entering the non-effective diameter can be absorbed to reduce the reflectivity, thereby eliminating stray light, improving the imaging effect, and enhancing the imaging quality, meeting people's increasing demand for mobile phone camera photography standards. For example, CN118621601A discloses a dyeing liquid for optical resin, the dyeing liquid includes an emulsion and a disperse dye, and the emulsion includes a swelling agent, a dispersant, a homogenizer and water. By limiting the specific composition of the above emulsion, the obtained dyeing liquid can effectively dye the optical resin under low temperature conditions, and is widely applicable to polar and non-polar optical resins, and can ensure that the blackness value of the colored optical resin obtained after dyeing is extremely high, the total light transmittance is low, and thus has an excellent effect of eliminating stray light, and also has the advantage of small vector change, which has met the requirements of most lens manufacturers; however, for some lens manufacturers with higher requirements for extinction, the blackness value of the resin obtained by using the dyeing liquid provided by the invention is still low and cannot meet the requirements.

[0005] Therefore, in view of the shortcomings of the above-mentioned technology, it is urgent to develop a dyeing liquid for optical resin with better dyeing effect. Summary of the invention

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a dyeing liquid for optical resin, a dyed optical resin, and a preparation method and application thereof. The dyeing effect of the dyeing liquid for optical resin is very excellent and is very suitable for dyeing optical resin. The dyed optical resin obtained after dyeing has a high blackness value, low transmittance and small vector change, and is very suitable for use in lenses with higher requirements for extinction.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] In a first aspect, the present invention provides a dyeing liquid for optical resin, wherein the dyeing liquid for optical resin comprises water, disperse dye, swelling agent, emulsifying dispersant, leveling agent and affinity agent.

[0009] The components of the dyeing liquid for optical resin provided by the present invention include water, disperse dye, swelling agent, emulsifying dispersant, leveling agent and affinity agent. Through the coordinated cooperation of the above components, especially through the addition of affinity agent and other components, the solubility parameter of the obtained dyeing liquid system is reduced, thereby effectively reducing the polarity difference between the dyeing liquid and the optical resin, which is more conducive to the swelling of the optical resin in the dyeing liquid, and at the same time enhancing the effective penetration of the disperse dye into the optical resin. Therefore, the obtained dyeing liquid for optical resin has excellent dyeing effect on the optical resin, and can achieve effective coloring of various optical resins at a relatively low dyeing temperature (≤80°C), with a wide range of applications. At the same time, the dyed optical resin obtained by dyeing can have a higher blackness value, a lower light transmittance and a smaller vector change, and will not affect the physical and chemical properties of the optical resin itself, and is very suitable for use in high-end lenses with higher requirements for matting.

[0010] In some preferred embodiments, based on 1 L of water, the amounts of the components contained in the optical resin dyeing solution are as follows: 10-100 g of disperse dye, 10-80 g of swelling agent, 10-100 g of emulsifying dispersant, 10-100 g of leveling agent and 10-200 g of affinity agent.

[0011] Wherein, the concentration of the disperse dye can be 10g, 20g, 40g, 60g, 80g or 100g, etc.

[0012] The concentration of the swelling agent can be 10 g, 20 g, 30 g, 40 g, 50 g, 60 g, 70 g or 80 g / L, etc.

[0013] The concentration of the emulsifying dispersant may be 10 g, 20 g, 40 g, 60 g, 80 g or 100 g, etc.

[0014] The concentration of the homogenizer can be 10g, 20g, 40g, 60g, 80g or 100g, etc.

[0015] The concentration of the affinity agent may be 10 g, 20 g, 40 g, 60 g, 80 g, 100 g, 120 g, 140 g, 160 g, 180 g or 200 g, and more preferably 20 to 150 g.

[0016] In some preferred embodiments, the affinity agent includes an alcohol affinity agent and / or a carboxylic acid affinity agent.

[0017] In some more preferred embodiments, the alcohol affinity agent includes any one of methanol, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, tert-butanol, isobutanol, n-pentanol, 3-pentanol, pentanol, isopentanol, n-hexanol, cyclohexanol, n-octanol, sec-octanol, n-nonanol, benzyl alcohol, ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,3-butanediol, 2,3-butanediol, glycerol or 1,5-pentanediol, or a combination of at least two thereof.

[0018] In some more preferred embodiments, the carboxylic acid affinity agent includes any one of formic acid, acetic acid, propionic acid, oxalic acid or acrylic acid, or a combination of at least two thereof.

[0019] In some preferred embodiments, the disperse dye includes any one of Disperse Black 9, Disperse Black BL, Disperse Black S-2BL, Disperse Black S-3BL, Disperse Black EX-SF, Disperse Black EXNSF, Disperse Black ECO, Disperse Black ECT, Disperse Black RD-EK, Disperse Black DST, Disperse Black RXN-SF, Disperse Black EV-ST, Disperse Black RD-3G, Disperse Black SE-U, Disperse Black SRN, Disperse Black GI, Disperse Black CSN and Disperse Black LBT, Disperse Black MW-ECO, Disperse Black WF-GL, Dianix Black DRD, ECO Black, LBD Black, 2BL Black, ECT Black, 3BL Black, SWF Black, Optisafe C250-09 Black, CHAECO C10002 Black, Dianix Black XF or Dianix Black ETD, or a combination of at least two thereof.

[0020] In some preferred embodiments, the solubility parameter of the swelling agent is 6.5 to 15 (cal / cm 3 ) 1 / 2 , for example 6.5 (cal / cm 3 ) 1 / 2 、7(cal / cm 3 ) 1 / 2 、8(cal / cm 3 ) 1 / 2 、9(cal / cm 3 ) 1 / 2 、10(cal / cm 3 )1 / 2 、11(cal / cm 3 ) 1 / 2 、12(cal / cm 3 ) 1 / 2 、13(cal / cm 3 ) 1 / 2 、14(cal / cm 3 ) 1 / 2 or 15(cal / cm 3 ) 1 / 2 wait.

[0021] In some preferred embodiments, the swelling agent includes α-terpinene, limonene, 1-dodecene, 2-methyl-3-butene-2-ol, abietic acid, cycloheptene, cycloheptatriene, shikimic acid, levorotatory-beta-pinene, 3-cyclopentenecarboxylic acid, dicyclopentane, α-rosin alcohol, 1,5-cyclooctadiene, 4-vinyl-1-cyclohexene, 1-cyclopentylcyclopentene, 3-cyclohexene-1-carboxylic acid, γ-terpinene, α-pinene, retinol, dicyclopentadiene, 1-cyclopentylcyclopentene, dipentene, pinene, (+)-limonene, levorotatory-alpha-pinene, (S)-cis-verbenol, 5-vinyl-bis(vinyl)-1-cyclohex ... Cyclo[2.2.1]hept-2-ene, perillyl alcohol, 4-(tert-butyl)-1-cyclohexene, 2,2.3-trimethyl-3-cyclopentene-1-acetaldehyde, menthol, (1S,2S,3R,5S)-(+)-2,3-pinane, (1S,2S,3R,5S)-(+)-2,3-pinanediol, 1,4-cyclohexanediol, cis-1,2-cyclohexyl dimethanol, menthol, cyclohexyl methanol, decalin, heptane, diisobutyl ketone, 2,2,4-trimethylpentane, N,N-dimethylaniline, N,N-diethylaniline, N,N-dibutylaniline or isoheptane, or a combination of at least two thereof.

[0022] In some preferred embodiments, the emulsifying dispersant includes hydroxyethyl cellulose, tristearic acid glyceryl, pentaerythritol stearate, lauryl alcohol polyoxyethylene ether, trioleic acid sorbitan, Span 60, glycerol monooleate, polyethylene glycol stearate, behenamide, sorbitan monopalmitate, polyoxyethylene lauryl ether, polyoxyethylene sorbitan monopalmitate, Tween 20, polyoxyethylene ether, lauric acid glyceryl, Span 20, Tween 85, triolein, alkylphenol polyoxyethylene ether, alkyl polyglycoside, alkyl glycoside, alkylphenol formaldehyde resin polyoxyethylene ether, dodecyl glucoside, myristyl myristate, isooctyl palmitate , triglycerol monooleate, decyl oleate, tridecyl stearate, octadecyl stearate, hexadecyl palmitate, hydroxyoctadecyl hydroxystearate, myristyl stearate, triisohexadecyl citrate, stearamidoethyl stearate, isoctadecyl stearate, oleyl oleate, hexadecyl stearate, isooctyl hydroxystearate, hexadecyl myristate, oleyl erucate, coconut fatty acid diethanolamide, ethoxylated (tallow alkyl) amine, lauroyl diethanolamine, cocoyl diethanolamine, cocoyl monoethanolamine, myristyl monoethanolamine, caprylic diethanolamine, tallow diethanolamine, myristyl diethyl Alcoholamine, lauroyl monoethanolamine, ricinoleyl diethanolamine, isostearyl diethanolamine, stearyl monoethanolamine, linoleyl diethanolamine, oleyl diethanolamine, palm kernel oleyl diethanolamine, acetyl monoethanolamine, β-naphthol alkoxylates, nonylphenol polyoxyethylene (15) ether, nonylphenol polyoxyethylene (5) ether, oleylamine polyoxyethylene (15) ether, castor oil polyoxyethylene (10) ether, nonylphenol polyoxyethylene (10) ether, nonylphenol polyoxyethylene (40) ether, lauryl glycol ether, N,N-di(2-hydroxyethyl)oleylamine, dodecyl sulfate, linear alkylbenzene sulfonate, alkylnaphthalene sulfonate, perfluoro Octane sulfonate, disodium N-laurylaminopropionate, sodium salt of dicarboxylic acid coconut oil derivative, perfluorobutane sulfonate, lignin sulfonate, lauramine hydrochloride, alkyl sulfosuccinate, ethylenediaminetetraacetate, linear alkyl alcohol, aromatic sulfonic acid-formaldehyde condensate, castor oil polyoxyethylene ether, fatty alcohol polyoxyethylene ether, nonylphenol polyoxyethylene ether, alkyl polyethylene glycol ether, alkylamine ether, sorbitan fatty acid ester, lauryl sulfobetaine, dihydroxyethyl alkyl betaine, coconut oil acid amido betaine, polyethylene glycol alkyl ether or polyoxypropylene glycol alkyl ether. Any one or a combination of at least two thereof.

[0023] In some preferred embodiments, the water is deionized water.

[0024] In some preferred embodiments, the homogenizer includes 5-methylsalicylic acid methyl ester, salicylic acid, propyl gallate, sodium salicylate, ethyl salicylate, 2-hydroxy-3-naphthoic acid, trioctyl trimesic acid, 3,5-di-tert-butylsalicylic acid, propyl benzoate, 5-methoxysalicylic acid, benzyl 4-hydroxybenzoate, thymolphthalein, 3-methylsalicylic acid, 5-aminosalicylic acid, methyl 3-hydroxybenzoate, 3,5-diisopropyl o-hydroxybenzoic acid, 3,5-dimethyl-4-methoxybenzoic acid, and original membrane ester. , 5-methylsalicylic acid, 3,5-di-tert-butyl-4-hydroxybenzoic acid, 4-hydroxy-3-methylbenzoic acid or 3-methoxy-4-methylbenzoic acid methyl ester or a combination of at least two thereof, and further preferably 3,5-di-tert-butylsalicylic acid, thymolphthalein, 3,5-diisopropyl o-hydroxybenzoic acid, 3,5-di-tert-butyl-4-hydroxybenzoic acid, 4-hydroxy-3-methylbenzoic acid, 3-methoxy-4-methylbenzoic acid methyl ester or a combination of at least two thereof.

[0025] In a second aspect, the present invention provides a method for preparing a dyeing liquid for optical resin as described in the first aspect, the preparation method comprising: mixing a swelling agent, an emulsifying dispersant, a leveling agent, an affinity agent and water, adding a disperse dye and mixing, to obtain the dyeing liquid for optical resin.

[0026] In some preferred embodiments, the preparation method specifically comprises the following steps: firstly, a swelling agent, an emulsifying dispersant, a homogenizing agent, an affinity agent and water are mixed at 20-60°C (for example, 20°C, 30°C, 40°C, 50°C or 60°C, etc., more preferably 20-40°C), 0-2MpaG (for example, 0MpaG, 0.2MpaG, 0.4MpaG, 0.6MpaG, 0.8MpaG, 1MpaG, 1.2MpaG, 1.4MpaG, 1.6MpaG, The mixture is mixed for 5 to 120 min (e.g., 5 min, 10 min, 20 min, 40 min, 60 min, 80 min, 100 min, 200 min, 40 min, 60 min, 80 min, 100 min, 25000 rpm, etc.) at a speed of 1000 to 25000 rpm (e.g., 1000 rpm, 2000 rpm, 4000 rpm, 6000 rpm, 8000 rpm, 10000 rpm, 15000 rpm, 20000 rpm or 25000 rpm, etc.). n or 120min, more preferably 5 to 60min), and then add disperse dye at 0 to 60°C (for example, 0°C, 10°C, 20°C, 30°C, 40°C, 50°C or 60°C, more preferably 20 to 40°C), 0 to 2MpaG (for example, 0MpaG, 0.2MpaG, 0.4MpaG, 0.6MpaG, 0.8MpaG, 1MpaG, 1.2MpaG, 1.4MpaG, 1.6MpaG, 1.8MpaG or 2 MpaG, etc.) and a rotation speed of 100 to 2000 rpm (for example, 100 rpm, 200 rpm, 400 rpm, 600 rpm, 800 rpm, 1000 rpm, 1500 rpm or 2000 rpm, etc.), and mixing for 5 to 60 min (for example, 5 min, 10 min, 20 min, 30 min, 40 min, 50 min or 60 min, etc., more preferably 5 to 20 min) to obtain the optical resin dyeing solution.

[0027] In the present invention, there is no special restriction on the equipment used for mixing in the above preparation method, as long as the rotation speed, pressure and temperature can meet the above-mentioned requirements. For example, a high-speed agitator, a high-shear emulsifier or a high-gravity dispersion reactor can be selected as the mixing equipment.

[0028] In a third aspect, the present invention provides a dyed optical resin, which is obtained by dyeing an optical resin with the optical resin dyeing liquid as described in the first aspect.

[0029] In some preferred embodiments, the optical resin includes any one or a combination of at least two of polymethyl methacrylate, polycarbonate, cycloolefin homopolymer, cycloolefin copolymer, styrene-(meth)acrylate copolymer, styrene-acrylonitrile copolymer or epoxy resin.

[0030] In some preferred embodiments, the blackness value of the dyed optical resin is ≥150, for example, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159 or 160, etc.

[0031] In some preferred embodiments, the light transmittance of the dyed optical resin is ≤1.5%, such as 1.5%, 1.4%, 1.3%, 1.1%, 1%, 0.9%, 0.7%, 0.5% or 0.3%, etc.

[0032] In some preferred embodiments, the vector variation of the dyed optical resin is ≤1 μm, such as 1 μm, 0.9 μm, 0.8 μm, 0.7 μm, 0.6 μm, 0.5 μm, 0.4 μm, 0.3 μm or 0.2 μm.

[0033] In a fourth aspect, the present invention provides a method for preparing a dyed optical resin, the method comprising: immersing an optical resin in the dyeing solution for optical resin as described in the first aspect, and taking it out to obtain the dyed optical resin.

[0034] In some preferred embodiments, the immersion temperature is 10-80°C, such as 10°C, 20°C, 30°C, 40°C, 50°C, 60°C, 70°C or 80°C, and more preferably 20-80°C.

[0035] In some preferred embodiments, the immersion time is 10 to 120 min, such as 10 min, 20 min, 40 min, 60 min, 80 min, 100 min or 120 min, etc., more preferably 10 to 60 min.

[0036] Preferably, the taking out further includes washing and drying steps.

[0037] In a fifth aspect, the present invention provides a use of the dyed optical resin as described in the third aspect in an optical lens.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] (1) The optical resin dyeing liquid provided by the present invention comprises water, disperse dye, swelling agent, emulsifying dispersant, leveling agent and affinity agent. Through the coordinated cooperation of the above components, especially through the addition of affinity agent and other components, the obtained optical resin dyeing liquid has excellent dyeing effect on optical resin, and can effectively color various optical resins at a relatively low dyeing temperature (≤80°C), and has a wide range of applications. At the same time, the dyed optical resin obtained by dyeing can have a higher blackness value, lower light transmittance and smaller vector change, and will not affect the physical and chemical properties of the optical resin itself, and is very suitable for use in high-end lenses with higher requirements for matting;

[0040] (2) Specifically, the optical resin obtained by dyeing with the optical resin dyeing solution provided by the present invention has a black value of ≥150, a total light transmittance of ≤1.5%, a vector change of ≤1μm, and a yield of ≥99%. DETAILED DESCRIPTION

[0041] The technical solution of the present invention is further described below by specific implementation methods. It should be understood by those skilled in the art that the embodiments are only to help understand the present invention and should not be regarded as specific limitations of the present invention.

[0042] Examples 1 to 9

[0043] Examples 1 to 9 respectively provide a dyeing solution for an optical resin, including water, disperse dye, swelling agent, emulsifying dispersant, leveling agent and affinity agent, and the amount of water is 1L, and the amount of the other components is as shown in Table 1. In Table 1, the unit of the amount of each component is "g";

[0044] Table 1

[0045]

[0046]

[0047] Comparative Examples 1 to 5

[0048] Comparative Examples 1 to 5 respectively provide a dyeing solution for an optical resin, including deionized water, optionally dispersed dyes, optionally swelling agents, optionally emulsifying dispersants, optionally leveling agents, and optionally affinity agents, and the amount of the deionized water is 1L, and the amounts of the other components are shown in Table 2. In Table 2, the units of the amounts of the components are all "g";

[0049] Table 2

[0050]

[0051] The preparation method of the dyeing liquid for optical resin provided in Examples 1 to 9 and Comparative Examples 1 to 5 includes:

[0052] Add the swelling agent, emulsifying dispersant, homogenizing agent and affinity agent into a container filled with deionized water, turn on the high dispersion equipment, mix for 60 minutes at 30°C, 0.1MpaG and a rotation speed of 10000rpm to prepare an emulsion with a solid average particle size of about 2.5μm, then add the disperse dye, start stirring, mix for 15 minutes at 30°C, 1MpaG and a rotation speed of 800rpm to obtain a uniform dyeing solution for optical resin.

[0053] Performance Testing

[0054] First, the optical resin lens was immersed in a 50°C optical resin dyeing solution, and was taken out after immersion for 20 minutes, and washed with water, and then placed in a 60°C oven to dry for 4 hours to obtain a dyed optical resin lens, which was used as a sample for the following tests;

[0055] Among them, optical resins include cycloolefin copolymer resin (COC) lenses, cycloolefin homopolymer resin (COP) lenses and polycarbonate resin (PC) lenses, all of which are conventional commercially available products.

[0056] (1) Black value (My): The dyed optical resin sample was tested using a desktop spectrophotometer, model CS-820N, test conditions: D65 light source, 10°.

[0057] (2) Total light transmittance: The dyed optical resin sample was tested using a haze meter model HAM-200, and the test conditions were: light source C.

[0058] (3) Vector change: A high-precision grating length measuring machine (SJ5100) was used to measure the length of the optical resin sample before and after dyeing, and the absolute value of the length change of the optical resin before and after dyeing was calculated. The test temperature was 20±2℃.

[0059] According to the above test method, the dyed optical resin lenses obtained by dyeing with the optical resin dyeing liquid provided by Examples 1 to 9 and Comparative Examples 1 to 5 were tested. The test results are shown in Table 3:

[0060] Table 3

[0061]

[0062]

[0063] From the data in Table 1, we can see that:

[0064] (1) The optical resin dyeing liquid provided in Examples 1 to 7 has excellent dyeing effects on COC lenses, COP lenses and PC lenses. The dyed COC lenses can have a blackness value of ≥151, a transmittance of ≤1.3%, and a vector change of ≤1.0 μm. The dyed COP lenses can have a blackness value of ≥150, a transmittance of ≤1.4%, and a vector change of ≤0.9 μm. The dyed PC lenses can have a blackness value of ≥155, a transmittance of ≤1.1%, and a vector change of ≤0.8 μm.

[0065] (2) It can be seen from the data of Examples 1 and 6 to 9 that, within a certain limit, as the concentration of the affinity agent in the dyeing solution increases, the blackness value of the dyed resin tends to increase. When the concentration of the affinity agent in the dyeing solution is too low (Example 8), the blackness value of the obtained dyed resin is low and the transmittance is high. However, when the concentration of the affinity agent in the dyeing solution is greater than 200 g / L (Example 9), the blackness value of the dyed resin does not increase significantly, and the vector change of the dyed resin increases significantly.

[0066] (3) It can be seen from the data of Example 1 and Comparative Example 1 that, without the addition of an affinity agent, the dyeing effect of the dyeing solution is significantly poor.

[0067] (4) It can also be seen from the data of Example 1 and Comparative Examples 2 to 5 that in the absence of any one or more of the swelling agent, emulsifying dispersant or leveling agent, the dyeing effect of the dyeing solution is also very unsatisfactory.

[0068] The applicant declares that the present invention uses the above-mentioned embodiments to illustrate a dyeing liquid for optical resin, a dyed optical resin, and a preparation method and application thereof, but the present invention is not limited to the above-mentioned embodiments, that is, it does not mean that the present invention must rely on the above-mentioned embodiments to be implemented. Those skilled in the art should understand that any improvement of the present invention, equivalent replacement of various raw materials of the product of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. A dyeing solution for optical resin, characterized in that: The optical resin dyeing liquid comprises water, disperse dye, swelling agent, emulsifying dispersant, leveling agent and affinity agent.

2. The optical resin dyeing liquid according to claim 1, characterized in that: Calculated based on 1L of water, the dosage of each component in the optical resin dyeing solution is as follows: 10-100g of disperse dye, 10-80g of swelling agent, 10-100g of emulsifying dispersant, 10-100g of leveling agent and 10-200g of affinity agent.

3. The dyeing solution for chemical resin according to claim 1 or 2, characterized in that: The affinity agent includes an alcohol affinity agent and / or a carboxylic acid affinity agent; Preferably, the alcohol affinity agent includes any one of methanol, ethanol, n-propanol, isopropanol, n-butanol, sec-butanol, tert-butanol, isobutanol, n-pentanol, 3-pentanol, amyl alcohol, isopentanol, n-hexanol, cyclohexanol, n-octanol, sec-octanol, n-nonanol, benzyl alcohol, ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,3-butylene glycol, 2,3-butylene glycol, glycerol or 1,5-pentanediol, or a combination of at least two thereof; Preferably, the carboxylic acid affinity agent includes any one of formic acid, acetic acid, propionic acid, oxalic acid or acrylic acid, or a combination of at least two thereof.

4. The dyeing liquid for optical resin according to any one of claims 1 to 3, characterized in that: The disperse dye includes any one of Disperse Black 9, Disperse Black BL, Disperse Black S-2BL, Disperse Black S-3BL, Disperse Black EX-SF, Disperse Black EXNSF, Disperse Black ECO, Disperse Black ECT, Disperse Black RD-EK, Disperse Black DST, Disperse Black RXN-SF, Disperse Black EV-ST, Disperse Black RD-3G, Disperse Black SE-U, Disperse Black SRN, Disperse Black GI, Disperse Black CSN and Disperse Black LBT, Disperse Black MW-ECO, Disperse Black WF-GL, Dianix Black DRD, ECO Black, LBD Black, 2BL Black, ECT Black, 3BL Black, SWF Black, Optisafe C250-09 Black, CHAECO C10002 Black, Dianix Black XF or Dianix Black ETD, or a combination of at least two thereof.

5. The dyeing liquid for optical resin according to any one of claims 1 to 4, characterized in that: The solubility parameter of the swelling agent is 6.5 to 15 (cal / cm 3 ) 1 / 2 ; Preferably, the swelling agent comprises α-terpinene, limonene, 1-dodecene, 2-methyl-3-butene-2-ol, abietic acid, cycloheptene, cycloheptatriene, shikimic acid, levorotatory-beta-pinene, 3-cyclopentenecarboxylic acid, dicyclopentane, α-rosin alcohol, 1,5-cyclooctadiene, 4-vinyl-1-cyclohexene, 1-cyclopentylcyclopentene, 3-cyclohexene-1-carboxylic acid, γ-terpinene, α-pinene, retinol, dicyclopentadiene, 1-cyclopentylcyclopentene, dipentene, pinene, (+)-limonene, levorotatory-alpha-pinene, (S)-cis-verbenol, 5-vinylbicyclo[2 .2.1] Any one or a combination of at least two of hept-2-ene, perillyl alcohol, 4-(tert-butyl)-1-cyclohexene, 2,2,3-trimethyl-3-cyclopentene-1-acetaldehyde, menthol, (1S,2S,3R,5S)-(+)-2,3-pinane, (1S,2S,3R,5S)-(+)-2,3-pinanediol, 1,4-cyclohexanediol, cis-1,2-cyclohexyl dimethanol, menthol, cyclohexyl methanol, decalin, heptane, diisobutyl ketone, 2,2,4-trimethylpentane, N,N-dimethylaniline, N,N-diethylaniline, N,N-dibutylaniline or isoheptane.

6. The dyeing liquid for optical resin according to any one of claims 1 to 5, characterized in that: The emulsifying dispersant includes hydroxyethyl cellulose, tristearic glyceryl, pentaerythritol stearate, lauryl alcohol polyoxyethylene ether, sorbitan trioleate, Span 60, glycerol monooleate, polyethylene glycol stearate, behenamide, sorbitan monopalmitate, polyoxyethylene lauryl ether, polyoxyethylene sorbitan monopalmitate, Tween 20, polyoxyethylene ether, lauric acid glyceryl, Span 20, Tween 85, triolein, alkylphenol polyoxyethylene ether, alkyl polyglycoside, alkyl glycoside, alkylphenol formaldehyde resin polyoxyethylene ether, dodecyl glycoside, myristyl myristate, isooctyl palmitate, triglycerol monooleate Esters, decyl oleate, tridecyl stearate, stearyl stearate, hexadecyl palmitate, hydroxyoctadecyl hydroxystearate, myristyl stearate, triisohexadecyl citrate, stearamidoethyl stearate, isocetyl stearate, oleyl oleate, hexadecyl stearate, isooctyl hydroxystearate, hexadecyl myristate, oleyl erucate, coconut fatty acid diethanolamide, ethoxylated (tallow alkyl) amine, lauroyl diethanolamine, cocoyl diethanolamine, cocoyl monoethanolamine, myristyl monoethanolamine, caprylic diethanolamine, tallow diethanolamine, myristyl diethanolamine, lauryl acyl monoethanolamine, ricinoleyl diethanolamine, isostearyl diethanolamine, stearyl monoethanolamine, linoleyl diethanolamine, oleyl diethanolamine, palm kernel oleyl diethanolamine, acetyl monoethanolamine, alkoxy compounds of β-naphthol, nonylphenol polyoxyethylene (15) ether, nonylphenol polyoxyethylene (5) ether, oleylamine polyoxyethylene (15) ether, castor oil polyoxyethylene (10) ether, nonylphenol polyoxyethylene (10) ether, nonylphenol polyoxyethylene (40) ether, lauryl glycol ether, N,N-di(2-hydroxyethyl)oleylamine, dodecyl sulfate, linear alkylbenzene sulfonate, alkylnaphthalene sulfonate, perfluorooctane Sulfonates, disodium N-laurylaminopropionate, sodium salt of dicarboxylic acid coconut oil derivatives, perfluorobutane sulfonates, lignin sulfonates, lauramine hydrochloride, alkyl sulfosuccinates, ethylenediaminetetraacetate, linear alkyl alcohols, aromatic sulfonic acid-formaldehyde condensates, castor oil polyoxyethylene ethers, fatty alcohol polyoxyethylene ethers, nonylphenol polyoxyethylene ethers, alkyl polyethylene glycol ethers, alkylamine ethers, sorbitan fatty acid esters, lauryl sulfobetaine, dihydroxyethyl alkyl betaine, coconut oil acid amido betaine, polyethylene glycol alkyl ethers or polypropylene glycol alkyl ethers, or any one or a combination of at least two thereof; Preferably, the homogenizer includes 5-methylsalicylic acid methyl ester, salicylic acid, propyl gallate, sodium salicylate, ethyl salicylate, 2-hydroxy-3-naphthoic acid, trioctyl trimesic acid, 3,5-di-tert-butylsalicylic acid, propyl benzoate, 5-methoxysalicylic acid, benzyl 4-hydroxybenzoate, thymolphthalein, 3-methylsalicylic acid, 5-aminosalicylic acid, methyl 3-hydroxybenzoate, 3,5-diisopropyl o-hydroxybenzoic acid, 3,5-dimethyl-4-methoxybenzoic acid, original membrane ester, 5- Any one of methylsalicylic acid, 3,5-di-tert-butyl-4-hydroxybenzoic acid, 4-hydroxy-3-methylbenzoic acid or 3-methoxy-4-methylbenzoic acid methyl ester or a combination of at least two thereof, and further preferably any one of 3,5-di-tert-butylsalicylic acid, thymolphthalein, 3,5-diisopropyl o-hydroxybenzoic acid, 3,5-di-tert-butyl-4-hydroxybenzoic acid, 4-hydroxy-3-methylbenzoic acid, 3-methoxy-4-methylbenzoic acid methyl ester or a combination of at least two thereof.

7. A method for preparing a dyeing solution for optical resin according to any one of claims 1 to 6, characterized in that: The preparation method comprises: mixing a swelling agent, an emulsifying dispersant, a leveling agent, an affinity agent and water, adding a disperse dye and mixing, and obtaining the dyeing liquid for the optical resin.

8. A dyed optical resin, characterized in that: The dyed optical resin is obtained by dyeing the optical resin with the optical resin dyeing liquid according to any one of claims 1 to 6; Preferably, the optical resin includes any one of polymethyl methacrylate, polycarbonate, cycloolefin homopolymer, cycloolefin copolymer, styrene-(meth)acrylate copolymer, styrene-acrylonitrile copolymer or epoxy resin, or a combination of at least two thereof.

9. A method for preparing a dyed optical resin, characterized in that: The preparation method comprises: immersing an optical resin in a dyeing solution for an optical resin as claimed in any one of claims 1 to 6, and taking it out to obtain the dyed optical resin; Preferably, the immersion temperature is 10 to 80°C; Preferably, the immersion time is 10 to 120 minutes.

10. Use of the dyed optical resin according to claim 8 in optical lenses.

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