Dyeing assistant composition for dyeing optical resin, dyeing method of optical resin and dyed optical resin

Abstract

The invention provides a dyeing assistant composition for optical resin dyeing, a dyeing method of optical resin and dyed optical resin, and belongs to the technical field of dyeing assistants. The dyeing assistant composition comprises the following components in parts by weight: 0.1-10 parts of a leveling agent, 0.1-10 parts of a dyeing accelerant, 0.1-10 parts of a penetrating agent, 0.1-10 parts of a dispersing agent and 100 parts of deionized water, the components are reasonably matched, so that the dyeing assistant composition can be used for dyeing polar and non-polar optical resin after being matched with the disperse dye liquor, the application range is wide, the dyed optical resin can obtain the same color as the disperse dye liquor, and the dyeing assistant composition also has the characteristics of high coloring density and good coloring uniformity; meanwhile, the dyeing assistant composition can be repeatedly used by supplementing the effective components in the dyeing assistant composition, and the economic and environment-friendly properties are good.

Description

Technical Field

[0001] The invention belongs to the technical field of dyeing auxiliaries, and in particular relates to a dyeing auxiliary composition for dyeing optical resins, a dyeing method for optical resins, and dyed optical resins. Background Art

[0002] Compared with optical glass, optical resin has the advantages of light texture, excellent processing performance and strong impact resistance, and has gradually become the preferred material in the optical field. At present, common high-end optical resin materials include polymethyl methacrylate, polycarbonate, polyolefin, styrene-(meth)acrylate copolymer, styrene-acrylonitrile copolymer and epoxy resin, or a combination of the above materials, which are often processed into lenses (for example, eyeglass lenses, goggles lenses, camera lenses, microscope lenses, projector lenses, laser scanning lenses, magnifying glasses, etc.), windshields, polarizing plates, polarizing films, indoor lighting, anti-reflection films, optical cards, grating disks, filter elements, liquid crystal display elements and other products.

[0003] When optical resin is applied to certain fields, it is necessary to dye the optical resin to enhance fashion and aesthetics, or to reduce light transmittance, or to reduce glare, or to obtain masterbatch based on optical resin. As a representative of dyeing methods, the direct dyeing method of disperse dyes is the most widely used due to its low cost, high efficiency, and low harm to the environment and human body. Common disperse dyes include azo, anthraquinone and quinophthalone, which contain a certain amount of polar groups and can easily color polar materials or products, but are difficult to color or do not color non-polar materials or products.

[0004] For example, CN104650621A discloses a disperse dye composition, disperse dyes, preparation method and use thereof, wherein the disperse dyes are suitable for dyeing and printing polyester and its blended fabrics, especially polyester-ammonia and polyester-cotton blended fabrics. The disperse dyes provided by the invention can achieve excellent and balanced dyeing and printing effects in terms of sublimation fastness, washing fastness and perspiration fastness; however, the disperse dye composition provided by the invention is not suitable for optical resins.

[0005] For another example, CN113668261A discloses a dyeing liquid for optical resins, which includes the following components, measured by mass: 1 to 30 parts of disperse dyes, 1 to 40 parts of leveling agents, 0.1 to 20 parts of accelerators, and 100 parts of deionized water. The dyeing liquid for optical resins disclosed in the invention is suitable for both polar and non-polar optical resins and has a good dyeing effect; however, the dyeing liquid provided by the invention is only suitable for one-time use, and has a poor dyeing effect on optical resins when reused, which is not economical and environmentally friendly.

[0006] Therefore, in view of the above technical problems, it is urgent to develop an auxiliary dyeing composition for optical resin dyeing that has excellent dyeing effect, a wide range of applications and can be reused. Summary of the invention

[0007] In view of the deficiencies in the prior art, the object of the present invention is to provide a dyeing auxiliary composition for optical resin dyeing, a dyeing method for optical resin and a dyed optical resin. The dyeing auxiliary composition is matched with a disperse dye solution when used, and is suitable for dyeing polar and non-polar optical resins. The dyed optical resin obtained after dyeing has a uniform coloring effect and a high coloring density, and the dyeing auxiliary composition can be reused, thereby achieving zero emissions and zero pollution, and has excellent environmental protection.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] In a first aspect, the present invention provides a dyeing auxiliary composition for dyeing optical resins, wherein the dyeing auxiliary composition comprises the following components in parts by weight:

[0010] 0.1 to 10 parts by weight of a leveling agent;

[0011] Dyeing accelerator 0.1-10 parts by weight;

[0012] 0.1 to 10 parts by weight of penetrant;

[0013] Dispersant 0.1-10 parts by weight;

[0014] Water: 100 parts by weight.

[0015] Wherein, the content of the leveling agent can be 0.1 parts by weight, 1 part by weight, 2 parts by weight, 3 parts by weight, 4 parts by weight, 5 parts by weight, 6 parts by weight, 7 parts by weight, 8 parts by weight, 9 parts by weight or 10 parts by weight, etc.

[0016] The content of the dyeing accelerator can be 0.1 parts by weight, 1 part by weight, 2 parts by weight, 3 parts by weight, 4 parts by weight, 5 parts by weight, 6 parts by weight, 7 parts by weight, 8 parts by weight, 9 parts by weight or 10 parts by weight, etc.

[0017] The content of the penetrant can be 0.1 parts by weight, 1 part by weight, 2 parts by weight, 3 parts by weight, 4 parts by weight, 5 parts by weight, 6 parts by weight, 7 parts by weight, 8 parts by weight, 9 parts by weight or 10 parts by weight, etc.

[0018] The content of the dispersant can be 0.1 parts by weight, 1 part by weight, 2 parts by weight, 3 parts by weight, 4 parts by weight, 5 parts by weight, 6 parts by weight, 7 parts by weight, 8 parts by weight, 9 parts by weight or 10 parts by weight, etc.

[0019] The dyeing auxiliary composition provided by the present invention comprises a specific amount of a leveling agent, a dyeing accelerator, a penetrant and a dispersant. By reasonably matching the above-mentioned components within the specific amount, the dyeing auxiliary composition can be used for dyeing polar and non-polar optical resins after being used in combination with a disperse dye liquid, wherein the flame retardant composition can promote the disperse dye liquid to more effectively combine with the optical resin and penetrate into the optical resin material, thereby helping to obtain a dyed optical resin with high color density and uniform coloring; and, by supplementing the effective ingredients in the dyeing auxiliary composition, the dyeing auxiliary composition can be reused, thereby achieving zero emission and zero pollution, and excellent environmental protection; in addition, the process of dyeing treatment using the dyeing auxiliary composition is very simple.

[0020] 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.

[0021] Preferably, the leveling agent includes any one of leveling agent 102, leveling agent OP, leveling agent O, leveling agent WE, leveling agent AN, leveling agent SE, leveling agent 40DX, leveling agent 640, leveling agent M-2200, leveling agent SWP, leveling agent N-11, leveling agent KF460, leveling agent TBW-951 or leveling agent RRS, or a combination of at least two thereof.

[0022] Preferably, the dyeing accelerator includes hexyl acetate, limonene, 1-dodecene, 2-methyl-3-butene-2-ol, abietic acid, cycloheptene, shikimic acid, 3-cyclopentenecarboxylic acid, dicyclopentane, 1,5-cyclooctadiene, 4-vinyl-1-cyclohexene, 1-cyclopentylcyclopentene, 3-cyclohexene-1-carboxylic acid, γ-terpinene, α-pinene, retinol, 1-cyclopentylcyclopentene, dipentene, pinene, perillyl alcohol, 2-ethylhexanoic acid, 2-methyl Any one or a combination of at least two of 2,2,4-trimethylpentane, 1,4-dimethyl-3-butene-2-ol ...

[0023] Preferably, the penetrant includes 5-methylsalicylic acid methyl ester, salicylic acid, propyl gallate, sodium salicylate, ethyl salicylate, 2-hydroxy-3-naphthoic 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-methyl The invention can be any one of salicylic 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 is further preferably any one of 2-hydroxy-3-naphthoic acid, 3,5-di-tert-butylsalicylic acid, thymolphthalein, 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.

[0024] Preferably, the dispersant includes hexadecyl alcohol, lauryl polyoxyethylene ether, sorbitan trioleate, glycerol monooleate, polyethylene glycol stearate, behenamide, sorbitan monopalmitate, polyoxyethylene lauryl ether, polyoxyethylene sorbitan monopalmitate, polyoxyethylene ether, lauric acid glyceryl, trioleyl glyceryl, 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, decadecyl palmitate, Hexadecyl esters, hydroxyoctadecyl hydroxystearate, myristyl stearate, triisohexadecyl citrate, stearamidoethyl stearate, isohexadecanyl stearate, oleyl oleate, cetyl stearate, isooctyl hydroxystearate, cetyl myristate, oleyl erucate, coconut fatty acid diethanolamide, ethoxylated (tallow alkyl) amine, lauroyl diethanolamine, cocoyl diethanolamine, cocoyl monoethanolamine, myristyl monoethanolamine, caprylic diethanolamine, tallow acyl diethanolamine, myristyl diethanolamine, lauroyl 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 sulfonate, N-laurylamine The invention can be any one of disodium propionate, sodium salt of coconut oil derivative of dicarboxylic acid, 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, or a combination of at least two thereof.

[0025] In the present invention, there is no special requirement for the preparation method of the dyeing auxiliary composition, as long as the auxiliary agents contained therein are uniformly dispersed in water.

[0026] In a second aspect, the present invention provides an application of the dyeing auxiliary composition as described in the first aspect, wherein the application comprises combining the dyeing auxiliary composition as described in the first aspect with a disperse dye solution for dyeing polar or non-polar optical resins.

[0027] In a third aspect, the present invention provides a method for dyeing an optical resin, the dyeing method comprising: immersing the optical resin in the dyeing auxiliary composition as described in the first aspect, taking it out, and then immersing it in a disperse dye solution, and after taking it out, washing and drying it to obtain the dyed optical resin.

[0028] The optical resin dyeing method provided by the present invention is very simple to operate. The auxiliary dye composition and the disperse dye solution are used separately, and only two immersion treatments are required. The auxiliary dye composition and the disperse dye solution used are less corrosive, so the dyeing process is very environmentally friendly.

[0029] Preferably, the temperature for immersing the optical resin in the dye composition as described in the first aspect is 40-100°C, for example, 40°C, 45°C, 50°C, 55°C, 60°C, 65°C, 70°C, 75°C, 80°C, 85°C, 90°C, 95°C or 100°C, and more preferably 60-100°C.

[0030] Preferably, the time for immersing the optical resin in the dyeing aid composition as described in the first aspect is 5 to 200 min, for example, 5 min, 10 min, 20 min, 30 min, 40 min, 60 min, 80 min, 100 min, 120 min, 140 min, 160 min, 180 min or 200 min, more preferably 20 to 200 min.

[0031] Preferably, the temperature of the re-immersion in the disperse dye solution is 40-100°C, for example, 40°C, 45°C, 50°C, 55°C, 60°C, 65°C, 70°C, 75°C, 80°C, 85°C, 90°C, 95°C or 100°C, and more preferably 60-100°C.

[0032] Preferably, the time for re-immersing in the disperse dye solution is 5 to 200 min, for example, 5 min, 10 min, 20 min, 30 min, 40 min, 60 min, 80 min, 100 min, 120 min, 140 min, 160 min, 180 min or 200 min, more preferably 20 to 200 min.

[0033] Preferably, the disperse dye solution comprises the following components in parts by weight:

[0034] 1 to 20 parts by weight of disperse dye;

[0035] Water: 100 parts by weight.

[0036] Wherein, the content of the disperse dye can be 1 part by weight, 2 parts by weight, 4 parts by weight, 6 parts by weight, 8 parts by weight, 10 parts by weight, 12 parts by weight, 14 parts by weight, 16 parts by weight, 18 parts by weight or 20 parts by weight, etc.

[0037] Preferably, the disperse dye comprises 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, Disperse Black LBT, Disperse Black MW-ECO, Disperse Black WF-GL, Dianix Black DRD, Dianix Orange UN-SE, Dianix Orange SE-B, Dianix Yellow AC-E, ECO Black, LBD Black, 2BL Black, ECT Black, 3BL Black, SWF Black, Optisafe C250-09 Black, CHAECO C10002 Black, DianixBlack XF, Dianix Black ETD, Dianix Orange BSE or Dianix Orange BSE, or a combination of at least two thereof.

[0038] In a fourth aspect, the present invention provides a dyed optical resin, which is obtained by dyeing an optical resin using the dyeing method described in the third aspect.

[0039] Preferably, the dyeing density of the optical substance of the dyeing is 75-99%, for example, 75%, 77%, 79%, 81%, 83%, 85%, 87%, 89%, 91%, 93%, 95%, 97% or 99%, etc.; wherein, the testing instrument for the dyeing density is a desktop spectrophotometer, model CS-820, and the testing conditions are: C light source, 2° angle.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] (1) The dyeing auxiliary composition provided by the present invention comprises a specific amount of a leveling agent, a dyeing accelerator, a penetrant and a dispersant. By reasonably matching the above-mentioned components within the specific amounts, the dyeing auxiliary composition can be used in combination with a disperse dye solution to dye polar and non-polar optical resins, which helps to obtain a dyed optical resin with high color density and uniform coloring.

[0042] (2) The dyeing auxiliary composition provided by the present invention can be reused by adding auxiliary agents, thereby helping to achieve zero emissions and zero pollution, and has excellent environmental protection.

[0043] (3) In addition, the process of dyeing optical resin using the dyeing auxiliary composition provided by the present invention is very simple and environmentally friendly and pollution-free. DETAILED DESCRIPTION

[0044] 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.

[0045] Optical resins: cycloolefin copolymer (COC, commonly available in the market), cycloolefin homopolymer (COP, commonly available in the market) and polycarbonate (PC, commonly available in the market).

[0046] Example 1 to Example 6 and Comparative Example 1 to Comparative Example 4

[0047] Examples 1 to 6 and Comparative Examples 1 to 4 respectively provide a dyeing aid composition for dyeing optical resins, and the components and amounts thereof are recorded in Table 1;

[0048] In Table 1, the dosage units of each component are "parts by weight";

[0049] Table 1

[0050]

[0051] The preparation method of the dyeing auxiliary composition for optical resin dyeing provided in Examples 1 to 6 and Comparative Examples 1 to 4 includes: uniformly mixing a leveling agent, a dyeing accelerator, a penetrant and a dispersant in water to obtain the dyeing auxiliary composition.

[0052] Application Example 1 to Application Example 3

[0053] A method for dyeing an optical resin comprises the following steps:

[0054] (1) heating the dyeing aid composition provided in Example 1 to 65° C. for standby use;

[0055] 5 parts by weight of disperse black BL and 100 parts by weight of deionized water were mixed evenly to obtain a disperse dye solution, and the temperature was raised to 65° C. for standby use;

[0056] (2) COC particles (Application Example 1), COP particles (Application Example 2) and PC particles (Application Example 3) were immersed in the dyeing auxiliary composition provided in Example 1 at a constant temperature of 65°C for 30 minutes, and then quickly immersed in a disperse dye solution at a constant temperature of 65°C for 30 minutes. After being taken out, the particles were washed with water and the water stains on the particles were wiped off, and finally placed in an oven at 80°C for drying for 6 hours to obtain a dyed optical resin.

[0057] It has been observed that the particle surfaces of the dyed optical resins provided in Application Examples 1 to 3 are very smooth and the color distribution is uniform; and after testing, the dyeing densities of the dyed optical resins provided in Application Examples 1 to 3 are 76%, 75% and 80%, respectively, indicating that the dyeing auxiliary composition provided in Example 1 has excellent dyeing effects on both polar and non-polar optical resins after being combined with the dyeing liquid.

[0058] Application Examples 4 to 6

[0059] A method for dyeing an optical resin comprises the following steps:

[0060] (1) heating the dyeing aid composition provided in Example 2 to 80° C. for standby use;

[0061] 10 parts by weight of disperse black BL and 100 parts by weight of deionized water were stirred evenly to obtain a disperse dye solution, and the temperature was raised to 80° C. for standby use;

[0062] (2) COC particles (Application Example 4), COP particles (Application Example 5) and PC particles (Application Example 6) were immersed in the dyeing auxiliary composition provided in Example 2 at a constant temperature of 80°C for 50 minutes, and then quickly immersed in a disperse dye solution at a constant temperature of 80°C for 50 minutes. After being taken out, the particles were washed with water and the water stains on the particles were wiped off, and finally placed in an oven at 80°C for drying for 6 hours to obtain a dyed optical resin.

[0063] It has been observed that the particle surfaces of the dyed optical resins provided in Application Examples 4 to 6 are very smooth and the color distribution is uniform; and after testing, the dyeing densities of the dyed optical resins provided in Application Examples 4 to 6 are 83%, 81% and 92%, respectively, indicating that the dyeing auxiliary composition provided in Example 2 has an excellent dyeing effect on both polar and non-polar optical resins after being combined with the dyeing liquid.

[0064] Application Examples 7 to 9

[0065] A method for dyeing an optical resin comprises the following steps:

[0066] (1) heating the dyeing aid composition provided in Example 3 to 90° C. for standby use;

[0067] 15 parts by weight of disperse black ECO and 100 parts by weight of deionized water were stirred evenly to obtain a disperse dye solution, and the temperature was raised to 90° C. for standby use;

[0068] (2) COC particles (Application Example 7), COP particles (Application Example 8) and PC particles (Application Example 9) were immersed in the dyeing auxiliary composition provided in Example 3 at a constant temperature of 90°C for 100 minutes, respectively, and then quickly immersed in a disperse dye solution at a constant temperature of 90°C for 100 minutes. After being taken out, they were washed with water and the water stains on the particles were wiped off, and finally placed in an oven at 80°C for drying for 6 hours to obtain a dyed optical resin.

[0069] It has been observed that the particle surfaces of the dyed optical resins provided in Application Examples 7 to 9 are very smooth and the color distribution is uniform; and after testing, the dyeing densities of the dyed optical resins provided in Application Examples 7 to 9 are 93%, 91% and 98%, respectively, indicating that the dyeing auxiliary composition provided in Example 3 has an excellent dyeing effect on both polar and non-polar optical resins after being combined with the dyeing liquid.

[0070] Application Example 10 to Application Example 12

[0071] A method for dyeing an optical resin comprises the following steps:

[0072] (1) heating the dyeing aid composition provided in Example 4 to 96° C. for standby use;

[0073] 15 parts by weight of disperse black LBT and 100 parts by weight of deionized water were stirred evenly to obtain a disperse dye solution, and the temperature was raised to 96° C. for standby use;

[0074] (2) COC particles (Application Example 10), COP particles (Application Example 11) and PC particles (Application Example 12) were immersed in the dyeing auxiliary composition provided in Example 4 at a constant temperature of 96°C for 150 min, respectively, and then quickly immersed in a disperse dye solution at a constant temperature of 96°C for 150 min. After being removed, the particles were washed with water and the water stains on the particles were wiped off, and finally placed in an oven at 80°C for drying for 6 h to obtain a dyed optical resin.

[0075] It has been observed that the particle surfaces of the dyed optical resins provided in Application Examples 10 to 12 are very smooth and the color distribution is uniform; and after testing, the dyeing densities of the dyed optical resins provided in Application Examples 10 to 12 are 98%, 96% and 99%, respectively, indicating that the dyeing auxiliary composition provided in Example 4 has an excellent dyeing effect on both polar and non-polar optical resins after being combined with the dyeing liquid.

[0076] Application Example 13 to Application Example 15

[0077] A method for dyeing an optical resin comprises the following steps:

[0078] (1) heating the dyeing aid composition provided in Example 5 to 80° C. for standby use;

[0079] 10 parts by weight of Dianix Orange SE-B and 100 parts by weight of deionized water were stirred evenly to obtain a disperse dye solution, and the solution was heated to 80° C. for standby use;

[0080] (2) COC particles (Application Example 13), COP particles (Application Example 14) and PC particles (Application Example 15) were immersed in the dyeing auxiliary composition provided in Example 5 at a constant temperature of 80°C for 100 min, respectively, and then quickly immersed in a disperse dye solution at a constant temperature of 80°C for 100 min. After being taken out, they were washed with water and the water stains on the particles were wiped off, and finally placed in an oven at 80°C for drying for 6 hours to obtain a dyed optical resin.

[0081] It has been observed that the particle surfaces of the dyed optical resins provided in Application Examples 13 to 15 are very smooth and the color distribution is uniform; and after testing, the dyeing densities of the dyed optical resins provided in Application Examples 13 to 15 are 88%, 86% and 95%, respectively, indicating that the dyeing auxiliary composition provided in Example 5 has an excellent dyeing effect on both polar and non-polar optical resins after being combined with the dyeing liquid.

[0082] Application Example 16 to Application Example 18

[0083] A method for dyeing an optical resin comprises the following steps:

[0084] (1) heating the dyeing aid composition provided in Example 6 to 80° C. for standby use;

[0085] 10 parts by weight of Dianix Orange SE-B and 100 parts by weight of deionized water were stirred evenly to obtain a disperse dye solution, and the solution was heated to 80° C. for standby use;

[0086] (2) COC particles (Application Example 16), COP particles (Application Example 17) and PC particles (Application Example 18) were immersed in the dyeing auxiliary composition provided in Example 6 at a constant temperature of 80°C for 100 min, respectively, and then quickly immersed in a disperse dye solution at a constant temperature of 80°C for 100 min. After being removed, the particles were washed with water and the water stains on the particles were wiped off, and finally placed in an oven at 80°C for drying for 6 h to obtain a dyed optical resin.

[0087] It has been observed that the particle surfaces of the dyed optical resins provided in Application Examples 16 to 18 are very smooth and the color distribution is uniform; and after testing, the dyeing densities of the dyed optical resins provided in Application Examples 16 to 18 are 90%, 88% and 93%, respectively, indicating that the dyeing auxiliary composition provided in Example 6 has an excellent dyeing effect on both polar and non-polar optical resins after being combined with the dyeing liquid.

[0088] Application Example 19

[0089] A dyeing method and a recycling method of an optical resin, comprising the following steps:

[0090] (1) heating the dyeing aid composition provided in Example 1 to 65° C. for standby use;

[0091] 5 parts by weight of disperse black BL and 100 parts by weight of deionized water were stirred evenly to obtain a disperse dye solution, which was heated to 65° C., and 5 parts of the same disperse dye solution were prepared according to the same formula and set aside;

[0092] (2) taking 5 portions of COC particles, numbered COC-1, COC-2, COC-3, COC-4 and COC-5, and immersing them in the auxiliary dye composition provided in Example 1 at a constant temperature of 65° C. for 30 min in order from small to large, and then quickly immersing them in 5 portions of the same disperse dye solution at a constant temperature of 65° C. for 30 min respectively after being taken out, and then washing with water and wiping off the water stains on the particles after being taken out, and finally placing them in an oven at 80° C. for drying for 6 h to obtain dyed COC particles, which are respectively recorded as dyed COC-1, dyed COC-2, dyed COC-3, dyed COC-4 and dyed COC-5;

[0093] It was observed that the particle surfaces of dyed COC-1 to 5 were very smooth, and the color distribution was uniform. And the dyeing density of dyed COC-1 to 5 was 76%, 76%, 65%, 33% and 15% respectively.

[0094] (3) Then, 0.5 parts by weight of peregal O, 0.5 parts by weight of pinene, 0.5 parts by weight of 3,5-di-tert-butyl salicylic acid and 0.5 parts by weight of lauric acid glyceride are added to the auxiliary dye composition provided in step (1), stirring is started to prepare a new auxiliary dye composition, and the temperature is also raised to 65° C., and then 1 part of COC particles, numbered as COC-6, is taken, and COC-6 is immersed in the above-mentioned new auxiliary dye composition at a constant temperature of 65° C. for 30 minutes, and then taken out and quickly immersed in a disperse dye solution at 65° C. for 30 minutes, and then washed with water after being taken out and the water stains on the particles are wiped off, and finally placed in an oven at 80° C. for 6 hours to obtain dyed COC-6;

[0095] It was observed that the surface of the dyed COC-6 particles was very smooth and the color distribution was uniform; and after testing, the dyeing density of the dyed COC-6 was 76%; this shows that although the dyeing effect of the dyeing auxiliary composition provided in Example 1 decreases after repeated use, the dyeing auxiliary composition can be restored to its original effect by adding the effective ingredients in the dyeing auxiliary composition, so that the resin particles after immersion can regain the characteristic of being easy to color, and the dyeing density after immersion in the disperse dye solution is the same as that at the beginning.

[0096] Comparative Application Example 1 to Comparative Application Example 4

[0097] A method for dyeing an optical resin, which differs from Application Example 1 in that the dyeing aid composition provided by Comparative Examples 1 to 4 is used to replace the dyeing aid composition provided by Example 1, and other substances, amounts and steps are the same as those in Application Example 1.

[0098] It is observed that the particle surface of the dyed optical resin obtained by the dyeing method provided in Comparative Application Example 1 is rough and the color is uneven; and after testing, the dyeing densities of the dyed optical resins obtained in Comparative Application Examples 1 to Comparative Application Examples 4 are 28%, 1%, 2% and 31%, respectively, indicating that the dyeing auxiliary composition provided in Comparative Examples 1 to Comparative Application Examples 4 lacks a leveling agent, a dyeing accelerator, a penetrant or a dispersant, resulting in difficulty for the dispersed dye solution to combine and penetrate with various optical resin materials, resulting in a low dyeing density of the obtained dyed resin and a poor dyeing effect.

[0099] Comparative Application Example 5

[0100] A dyeing method and a recycling method of an optical resin specifically include the following steps:

[0101] (1) Add 10 parts by weight of CI Disperse Red 4, 5 parts by weight of dodecyl sulfate and 4 parts by weight of homomanic salicylate into a beaker containing deionized water, start stirring to obtain a uniform dyeing solution, heat to 90° C., and set aside;

[0102] (2) taking 5 parts by weight of COC particles, recorded as COC-1, COC-2, COC-3, COC-4 and COC-5, and sequentially immersing 5 parts by weight of COC particles in the dyeing solution at a constant temperature of 90° C. for 30 minutes, then taking out and washing with water, wiping off the residual water stains on the particles, and placing 5 parts by weight of the particles in an oven at 85° C. for 6 hours to obtain dyed COC particles, which are recorded as dyed COC-1, dyed COC-2, dyed COC-3, dyed COC-4 and dyed COC-5, respectively;

[0103] After testing, the staining densities of staining COC-1 to 5 were 70%, 70%, 52%, 23%, and 11%, respectively;

[0104] (3) Then, 10 parts by weight of CI Disperse Red 4, 5 parts by weight of dodecyl sulfate and 4 parts by weight of homomanthyl salicylate are added to the dyeing solution provided in step (1), stirring is started to obtain a uniform new dyeing solution, the temperature is raised to 90° C. for standby use, COC particles are taken, recorded as COC-6, COC-6 is immersed in the above-mentioned new dyeing solution at a constant temperature of 90° C. for 30 minutes, then taken out, washed with water, and residual water stains on the particles are wiped off, and the particles are placed in an oven at 85° C. for 6 hours to obtain dyed COC-6;

[0105] After testing, the dyeing density of dyed COC-6 was only 22%, indicating that the dyeing effect of the existing conventional dyeing solution decreased after repeated use, and the dyeing effect was still not ideal after the effective ingredients of the dyeing solution were added again.

[0106] In summary, it can be seen that the optical resin materials soaked in the dyeing auxiliary composition provided by the present invention can be well colored in the disperse dye solution, and the coloring density is 75-99%; while the optical resin soaked in the dyeing auxiliary composition lacking any component of the complete formula is difficult to be colored in the disperse dye solution or the coloring effect is not ideal; therefore, it can be proved that the dyeing auxiliary composition provided by the present invention can effectively promote the combination and penetration of the disperse dye solution with each optical resin material through the reasonable combination of the four effective ingredients of the leveling agent, the dyeing accelerator, the penetrant and the dispersant. At the same time, the dyeing auxiliary can be reused by adding the effective ingredients.

[0107] The applicant declares that the present invention uses the above-mentioned embodiments to illustrate a dyeing auxiliary composition for optical resin dyeing, a dyeing method for optical resin and a dyed optical resin, 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 auxiliary composition for optical resin dyeing, characterized in that: The dyeing auxiliary composition comprises the following components in parts by weight:

2. The dyeing aid composition according to claim 1, characterized in that 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.

3. The dyeing auxiliary composition according to claim 1, characterized in that The leveling agent includes any one of leveling agent 102, leveling agent OP, leveling agent O, leveling agent WE, leveling agent AN, leveling agent SE, leveling agent 40DX, leveling agent 640, leveling agent M-2200, leveling agent SWP, leveling agent N-11, leveling agent KF460, leveling agent TBW-951 or leveling agent RRS, or a combination of at least two thereof.

4. The dyeing auxiliary composition according to claim 1, characterized in that The dyeing accelerator includes hexyl acetate, limonene, 1-dodecene, 2-methyl-3-butene-2-ol, abietic acid, cycloheptene, shikimic acid, 3-cyclopentenecarboxylic acid, dicyclopentane, 1,5-cyclooctadiene, 4-vinyl-1-cyclohexene, 3-cyclohexene-1-carboxylic acid, Y-terpinene, α-pinene, retinol, 1-cyclopentylcyclopentene, dipentene, pinene, perillyl alcohol, 2-ethylhexanoic acid, 2-methyl-3-butene Any one or a combination of at least two of cyclopentane, 2,2,3-trimethyl-3-cyclopentene-1-acetaldehyde, menthol, 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.

5. The dyeing auxiliary composition according to claim 1, characterized in that The penetrant includes any one of 5-methylsalicylic acid methyl ester, salicylic acid, propyl gallate, sodium salicylate, ethyl salicylate, 2-hydroxy-3-naphthoic 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-methylsalicylic acid, 3,5-di-tert-butyl-4-hydroxybenzoic acid, 4-hydroxy-3-methylbenzoic acid or methyl 3-methoxy-4-methylbenzoate or a combination of at least two thereof.

6. The dyeing auxiliary composition according to claim 1, characterized in that: The dispersant includes hexadecyl alcohol, lauryl polyoxyethylene ether, sorbitan trioleate, glycerol monooleate, polyethylene glycol stearate, behenamide, sorbitan monopalmitate, polyoxyethylene lauryl ether, polyoxyethylene sorbitan monopalmitate, polyoxyethylene ether, lauric acid glyceryl, trioleic acid glyceryl, 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, isoctyl stearate, oleyl oleate, cetyl stearate, isooctyl hydroxystearate, cetyl myristate, oleyl erucate, coconut fatty acid diethanolamide, ethoxylated (tallow alkyl) amine, lauroyl diethanolamine, cocoyl diethanolamine, cocoyl monoethanolamine, myristyl monoethanolamine, caprylic diethanolamine, tallow acyl diethanolamine, myristyl diethanolamine, lauroyl monoethanolamine, ricinoleyl diethanolamine, isostearyl diethyl Alcoholamine, 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 sulfonate, N-laurylamino Disodium propionate, sodium salt of coconut oil derivative of dicarboxylic acid, 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.

7. A method for dyeing an optical resin, characterized in that: The dyeing method comprises: immersing the optical resin in the dyeing auxiliary composition according to any one of claims 1 to 6, taking it out, and then immersing it in a disperse dye solution, and then washing and drying it after taking it out to complete the dyeing of the optical resin.

8. The dyeing method according to claim 7, characterized in that The optical resin is immersed in the dyeing aid composition according to any one of claims 1 to 6 at a temperature of 40 to 100° C. for a time of 5 to 200 minutes; The temperature of the re-immersion in the disperse dye solution is 40-100° C. and the time is 5-200 minutes.

9. The dyeing method according to claim 7, characterized in that: The disperse dye solution comprises the following components in parts by weight: 1 to 20 parts by weight of disperse dye; Water: 100 parts by weight.

10. A dyed optical resin, characterized in that: The dyed optical resin is obtained by dyeing the optical resin using the dyeing method according to any one of claims 7 to 9.

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