ANTI-BLUE LIGHT ANTI-INFRARED RESIN LENS WITH REFRACTIVITY OF 1.50 AND PREPARATION METHOD THEREOF

Abstract

The present invention discloses an anti-blue light anti-infrared resin lens having a refractivity of 1.50, and a preparation method thereof. The lens comprises 100 parts by weight of CR39 resin monomer, 0.5-5 parts by weight of an initiator, and 1.0216-30.6 parts by weight of an additive, where the additive includes an anti-infrared absorber, a blue light absorber, and a hardness modifier at a weight ratio of 0.0005-0.5:0.001-10:1-10, the initiator is benzoyl peroxide, dicumyl peroxide, or 1,1-di-tert-butylperoxy-3,3,5-trimethylcyclohexane. The resin lens prepared in the present invention has both blue light absorption effect and near-infrared absorption effect and is capable of being dyed as needed to have the effect of sunglasses, while the quality of the lens is guaranteed. The resin lens is a new type of multifunctional resin lens.

Claims

1. An anti-blue light anti-infrared resin lens having a refractivity of 1.50, comprising 100 parts by weight of CR39 resin monomer, 0.5-5 parts by weight of an initiator, and 1.0216-30.6 parts by weight of an additive, wherein the additive comprises an anti-infrared absorber, a blue light absorber, and a hardness modifier at a weight ratio of 0.0005-0.5:0.001-10:1-10, and the initiator is benzoyl peroxide, dicumyl peroxide, or 1,1-di-tert-butylperoxy-3,3,5-trimethylcyclohexane.

2. The anti-blue light anti-infrared resin lens with a refractivity of 1.50 according to claim 1, comprising 100 parts by weight of CR39 resin monomer, 1-3 parts by weight of an initiator, and 2.216-19.33 parts by weight of an additive, wherein the additive comprises an anti-infrared absorber, a blue light absorber, and a hardness modifier at a weight ratio of 0.001-0.3:0.01-5:2-8.

3. The anti-blue light anti-infrared resin lens with a refractivity of 1.50 according to claim 1, wherein the additive further comprises a dyeing modifier, the weight ratio of the dyeing modifier to the CR39 resin monomer is 0.0001-0.1:100, and preferably 0.005-0.03:100, and the dyeing modifier is a siloxane-based leveling and dispersing agent.

4. The anti-blue light anti-infrared resin lens with a refractivity of 1.50 according to claim 1, wherein the CR39 resin monomer is a mixture of diethylene glycol allyl carbonate and a polymer thereof, in which the content of monomeric diethylene glycol allyl carbonate is 80-90%, and the rest are a dimer and a trimer.

5. The anti-blue light anti-infrared resin lens with a refractivity of 1.50 according to claim 1, wherein the anti-infrared absorber is prepared by uniformly dispersing a rare earth element oxide with a diameter of 10-50 nm in ethylene-butyl acrylate, where the concentration of the rare earth element oxide is 0.5%-5%.

6. The anti-blue light anti-infrared resin lens with a refractivity of 1.50 according to claim 1, wherein the additive further comprises an anti-shrinkage modifier and a self-release modifier, where the weight ratio of the anti-shrinkage modifier and the self-release modifier to the resin monomer is 0.01-5:0.01-5:100, and preferably 0.1-3:0.1-3:100.

7. A method for preparing an anti-blue light anti-infrared resin lens with a refractivity of 1.50 according to claim 1, comprising: pre-dissolving a blue light absorber in a resin monomer at 40-55° C., adding and dissolving an anti-infrared absorber and a hardness modifier after cooling down to room temperature, then adding an initiator, mixing evenly, pouring into a mold, and then forming by heat curing.

8. The method for preparing an anti-blue light anti-infrared resin lens with a refractivity of 1.50 according to claim 7, comprising specifically the following steps: (1) mixing of materials, comprising: pre-dissolving the blue light absorber in the resin monomer heated to 40-55° C., cooling to a normal temperature over half an over, then sequentially adding the anti-infrared absorber and the hardness modifier, and finally adding an initiator and mixing for 1-2 hrs under vacuum; (2) pouring of materials, comprising: filtering the uniformly mixed materials in the step (1) and then pouring into a glass mold, and sealing; (3) primary curing, comprising: positioning the mold with poured materials in the step (2) in a curing furnace for primary curing and forming, wherein the curing time vs temperature curve comprises: an initial temperature of 25-30° C., heating up to 60-65° C. over 1 hr, then heating up to 80-85° C. over 1 hr and holding at 80-85° C. for 20 hrs, heating up to 90-95° C. over 16 hrs, heating up to 100-105° C. over 3 hrs, and then cooling to 75-80° C. over 0.5 hr; (4) releasing from the mold, edging, and cleaning; and (5) secondary curing, comprising: positioning the cleaned lens in the curing furnace again for secondary curing at a curing temperature of 105-110° C., for a time of 2-2.5 hrs.

9. A method for preparing an anti-blue light anti-infrared resin lens with a refractivity of 1.50 according to claim 3, comprising: pre-dissolving a blue light absorber in a resin monomer at 40-55° C., adding and dissolving an anti-infrared absorber, a hardness modifier and a dyeing modifier after cooling down to normal temperature, then adding an initiator, mixing evenly, pouring into a mold, forming by heat curing, and then dying.

10. The method for preparing an anti-blue light anti-infrared resin lens with a refractivity of 1.50 according to claim 9, comprising specifically the following steps: (1) mixing of materials, comprising: pre-dissolving the blue light absorber in the resin monomer heated to 40-55° C., cooling to a normal temperature over half an hour, then sequentially adding the anti-infrared absorber, the hardness modifier and the dyeing modifier, and finally adding an initiator and mixing for 1-2 hrs under vacuum; (2) pouring of materials, comprising: filtering the uniformly mixed materials in the step (1) and then pouring into a glass mold, and sealing; (3) primary curing, comprising: positioning the mold with poured materials in the step (2) in a curing furnace for primary curing and forming, wherein the curing time vs temperature curve comprises: an initial temperature of 25-30° C., heating up to 60-65° C. over 1 hr, then heating up to 80-85° C. over 1 hr and holding at 80-85° C. for 20 hrs, heating up to 90-95° C. over 16 hrs, heating up to 100-105° C. over 3 hrs, and then cooling to 75-80° C. over 0.5 hr; (4) releasing from the mold, edging, and cleaning; (5) secondary curing, comprising: positioning the cleaned lens in the curing oven again for secondary curing at a curing temperature of 105-110° C., for a time of 2-2.5 hrs; and (6) standing the lens after secondary curing in a dyeing tank and dying at 85-95° C. for half an hour.

Description

DETAILED DESCRIPTION

[0035] Preferred embodiments of the present invention will be described in further detail below in conjunction with specific examples.

Example 1

[0036] CR39 resin monomer is a mixture of diethylene glycol allyl carbonate and a polymer thereof, where the content of monomeric diethylene glycol allyl carbonate is 80-90%, and the rest are a dimer and a trimer (ACOMN company, Product Number: 7AX).

[0037] The initiator is benzoyl peroxide (Shanghai Haiqu Chemical Co., Ltd.).

[0038] The anti-infrared absorber is prepared by uniformly dispersing a rare earth element oxide with a diameter of 10-50 nm (including Sm.sub.2O.sub.3:Eu.sub.2O.sub.3=3:1) in ethylene-butyl acrylate, where the concentration of the rare earth element oxide is 2%.

[0039] The blue light absorber is 2-hydroxy-4-methoxybenzophenone (Jiangsu Wuxi Henghui Chemical Co., Ltd., UV-9).

[0040] The hardness modifier is methyl methacrylate (Degussa).

[0041] The anti-shrinkage modifier is a difunctional polyurethane acrylate (Eternal Material Co., Ltd, DR-U079);

[0042] The self-release modifier is a pentaerythritol triacrylate prepolymer (Eternal Material Co., Ltd, EM-235).

[0043] An anti-blue light anti-infrared resin lens with a refractivity of 1.50 comprises 100 kg of CR39 resin monomer, 1.2 kg of an initiator, 50 g of an anti-infrared absorber, 500 g of a blue light absorber, 1.5 kg of a hardness modifier, 90 g of an anti-shrinkage modifier, and 90 g of a self-release modifier.

[0044] The lens preparation steps were as follows.

[0045] (1) Mixing of materials: The blue light absorber, the anti-shrinkage modifier and the self-release modifier were pre-dissolved in the resin monomer heated to 40° C., and cooled to a normal temperature of about 25° C. over half an over. Then the anti-infrared absorber and the hardness modifier were sequentially added, and finally the initiator was added and mixed for 1-2 hrs under vacuum.

[0046] (2) Pouring of materials: The uniformly mixed materials in the step (1) was filtered through a 5 μm filter, then poured into a glass mold by a decanter, and sealed with a tape.

[0047] (3) Primary curing: The mold with poured materials in the step (2) was positioned in a curing furnace for primary curing and forming, where the curing time vs temperature curve comprises: an initial temperature of 25-30° C., heating up to 60-65° C. over 1 hr, then heating up to 80-85° C. over 1 hr and holding at 80-85° C. for 20 hrs, heating up to 90-95° C. over 16 hrs, heating up to 100-105° C. over 3 hrs, and then cooling to 75-80° C. over 0.5 hr; and the heating and cooling processes are both at a constant rate.

[0048] (4) Releasing from the mold, edging, and washing: The resulting material was released from the mold after curing and forming, and edged by an edge finishing machine, and the surface was cleaned.

[0049] (5) Secondary curing: The cleaned lens was positioned in the curing furnace again for secondary curing at a curing temperature of 105-110° C., for a time of 2-2.5 hrs.

[0050] (6) A hardening layer was coated on the surface of the lens by dip coating, and an antireflection film layer was formed by coating silica, zirconia, indium tin oxide and a waterproof layer on the surface of the lens by vacuum coating.

Example 2

[0051] CR39 resin monomer is a mixture of diethylene glycol allyl carbonate and a polymer thereof, where the content of monomeric diethylene glycol allyl carbonate is 80-90%, and the rest are a dimer and a trimer (ACOMN company, Product Number: 7AX).

[0052] The initiatoris dicumyl peroxide (Jinan Guochen Taifu Chemical Co., Ltd).

[0053] The anti-infrared absorber is prepared by uniformly dispersing a rare earth element oxide with a diameter of 10-50 nm (including Sm.sub.2O.sub.3:Eu.sub.2O.sub.3=3:1) in ethylene-butyl acrylate, where the concentration of the rare earth element oxide is 2%.

[0054] The blue light absorber is 2-hydroxy-4-n-octyloxybenzophenone (Nanjing Jingtianwei Chemical Co., Ltd., UV531).

[0055] The hardness modifier is vinyl acetate (Shanghai Jinjinle Industry Co., Ltd).

[0056] The dyeing modifier is a polyether modified polyorganosiloxane leveling and dispersing agent (Guangdong Rebon Chemical Co., Ltd., RB-1181).

[0057] The anti-shrinkage modifier is a hexafunctional polyurethane acrylate (Eternal Material Co., Ltd, 6103).

[0058] The self-release modifier is a pentaerythritol triacrylate prepolymer (Eternal Material Co., Ltd, EM-235).

[0059] An anti-blue light anti-infrared resin lens with a refractivity of 1.50 comprises 100 kg of CR39 resin monomer, 3 kg of an initiator, 300 g of an anti-infrared absorber, 5 kg of a blue light absorber, 8 kg of a hardness modifier, 30 g of a dyeing modifier, 3 kg of an anti-shrinkage modifier, and 3 kg of a self-release modifier.

[0060] The lens preparation steps were as follows.

[0061] (1) Mixing of materials: The blue light absorber, the anti-shrinkage modifier and the self-release modifier were pre-dissolved in the resin monomer heated to 40° C., and cooled to a normal temperature of about 25° C. over half an over. Then the anti-infrared absorber, the hardness modifier, and the dyeing modifier were sequentially added, and finally the initiator was added and mixed for 1-2 hrs under vacuum.

[0062] (2) Pouring of materials: The uniformly mixed materials in the step (1) was filtered through a 5 μm filter, then poured into a glass mold by a decanter, and sealed with a tape.

[0063] (3) Primary curing: The mold with poured materials in the step (2) was positioned in a curing furnace for primary curing and forming, where the curing time vs temperature curve comprises: an initial temperature of 25-30° C., heating up to 60-65° C. over 1 hr, then heating up to 80-85° C. over 1 hr and holding at 80-85° C. for 20 hrs, heating up to 90-95° C. over 16 hrs, heating up to 100-105° C. over 3 hrs, and then cooling to 75-80° C. over 0.5 hr; and the heating and cooling processes are both at a constant rate.

[0064] (4) Releasing from the mold, edging, and washing: The resulting material was released from the mold after curing and forming, and edged by an edge finishing machine, and the surface was cleaned.

[0065] (5) Secondary curing: The cleaned lens was positioned in the curing furnace again for secondary curing at a curing temperature of 105-110° C., for a time of 2-2.5 hrs.

[0066] (6) The lens after the secondary curing and forming was allowed to stand in a dyeing tank and dyed at 85-95° C. for half an hour.

[0067] (7) A hardening layer was coated on the surface of the lens by dip coating, and an antireflection film layer was formed by coating silica, zirconia, indium tin oxide and a waterproof layer on the surface of the lens by vacuum coating.

Example 3

[0068] CR39 resin monomer is a mixture of diethylene glycol allyl carbonate and a polymer thereof, where the content of monomeric diethylene glycol allyl carbonate is 80-90%, and the rest are a dimer and a trimer (ACOMN company, Product Number: 7AX).

[0069] The initiator is 1,1-di-tert-butylperoxy-3,3,5-trimethylcyclohexane (Tianjin AkzoNobel Peroxide Co., Ltd).

[0070] The anti-infrared absorber is prepared by uniformly dispersing a rare earth element oxide with a diameter of 10-50 nm (including Sm.sub.2O.sub.3:Eu.sub.2O.sub.3=3:1) in ethylene-butyl acrylate, where the concentration of the rare earth element oxide is 2%.

[0071] The blue light absorber is 2-hydroxy-4-dodecyloxybenzophenone (Shanghai King Brother Chemical Co., Ltd., UV-1200).

[0072] The hardness modifier is methyl methacrylate (Degussa).

[0073] The dyeing modifier is a polyether modified polyorganosiloxane leveling and dispersing agent (Guangdong Rebon Chemical Co., Ltd., RB-1181).

[0074] The anti-shrinkage modifier is a difunctional polyurethane acrylate (Eternal Material Co., Ltd., DR-U079).

[0075] The self-release modifier is a pentaerythritol triacrylate prepolymer (Eternal Material Co., Ltd EM-235).

[0076] An anti-blue light anti-infrared resin lens with a refractivity of 1.50 comprises 100 kg of CR39 resin monomer, 1.5 kg of an initiator, 50 g of an anti-infrared absorber, 500 g of a blue light absorber, 3 kg of a hardness modifier, 5 g of a dyeing modifier, 500 g of an anti-shrinkage modifier, and 500 g of a self-release modifier.

[0077] The lens preparation steps were as follows.

[0078] (1) Mixing of materials: The blue light absorber, the anti-shrinkage modifier and the self-release modifier were pre-dissolved in the resin monomer heated to 40° C., and cooled to a normal temperature of about 25° C. over half an over. Then the anti-infrared absorber, the hardness modifier, and the dyeing modifier were sequentially added, and finally the initiator was added and mixed for 1-2 hrs under vacuum.

[0079] (2) Pouring of materials: The uniformly mixed materials in the step (1) was filtered through a 5 μm filter, then poured into a glass mold by a decanter, and sealed with a tape.

[0080] (3) Primary curing: The mold with poured materials in the step (2) was positioned in a curing furnace for primary curing and forming, where the curing time vs temperature curve comprises: an initial temperature of 25-30° C., heating up to 60-65° C. over 1 hr, then heating up to 80-85° C. over 1 hr and holding at 80-85° C. for 20 hrs, heating up to 90-95° C. over 16 hrs, heating up to 100-105° C. over 3 hrs, and then cooling to 75-80° C. over 0.5 hr; and the heating and cooling processes are both at a constant rate.

[0081] (4) Releasing from the mold, edging, and washing: The resulting material was released from the mold after curing and forming, and edged by an edge finishing machine, and the surface was cleaned.

[0082] (5) Secondary curing: The cleaned lens was positioned in the curing furnace again for secondary curing at a curing temperature of 105-110° C., for a time of 2-2.5 hrs.

[0083] (6) The lens after the secondary curing and forming was allowed to stand in a dyeing tank and dyed at 85-95° C. for half an hour.

[0084] (7) A dyeable hardening layer was coated on the surface of the lens by dip coating, and an antireflection film layer was formed by coating silica, zirconia, indium tin oxide and a waterproof layer on the surface of the lens by vacuum coating.

Comparative Example 1

[0085] A resin lens was prepared, where the initiator used was tert-butyl peroxy-2-ethylhexanoate, and the other materials and preparation method were the same as those in Example 3.

Comparative Example 2

[0086] A resin lens was prepared, where the initiator used was diisopropyl peroxydicarbonate, and the other materials and preparation method were the same as those in Example 3.

Comparative Example 3

[0087] A resin lens was prepared, where the anti-infrared absorber used was the infrared absorber 1122 available from FEW company, Germany, and the other materials and preparation method were the same as those in Example 3.

Comparative Example 4

[0088] A resin lens was prepared, where no anti-infrared absorber was added, and the other materials and preparation method were the same as those in Example 3.

Comparative Example 5

[0089] A resin lens was prepared, where no dyeing modifier was added, and the other materials and preparation method were the same as those in Example 3.

Comparative Example 6

[0090] A resin lens comprises 100 kg of CR39 resin monomer, 10 kg of an initiator, 0.3 g of an anti-infrared absorber, 5 g of a blue light absorber, 1 kg of a hardness modifier, 1 g of a dyeing modifier, 5 g of an anti-shrinkage modifier, and 5 g of a self-release modifier. The species and product numbers of raw materials in the comparative examples are the same as those in Example 3, and the preparation method is also the same as that in Example 3.

[0091] The optical performance test results of the lenses prepared in the examples and comparative examples are shown in Table 1.

TABLE-US-00001 TABLE 1 Comparison of optical performances of lenses prepared in examples and comparative examples Blue light Absorption Infrared Anti- Background cut-off rate in absorption Dyeing Barcol fogging Lens color of Sample band 380-500 nm rate performance hardness performance pass rate lens Example 1 400 nm   22% 51.8% — 31 Good 91.5% Pale yellow Example 2 420 nm 28.6% 88.6% Even dying 38 Good 94.6% Pale without yellow blotchy appearance Example 3 400 nm 20.6% 50.6% Even dying 35 Good 90.2% Pale without yellow blotchy appearance Comparative — — — — — — Non- — Example 1 formable Comparative 395 nm 18.9% 48.3% Even dying 38 Serious 92.3% Dark Example without fogging yellow 2 blotchy appearance Comparative 400 nm   20%   18% Even dying 32 Good   88% Pale Example without yellow 3 blotchy appearance Comparative 420 nm 28.6%   2% Even dying 38 Good 94.2% Pale Example without yellow 4 blotchy appearance Comparative 400 nm 19.8%   48% Uneven dying 33 Good 90.2% Pale Example yellow 5 Comparative — — — — — — Implosive, — Example and 6 non- formable Note: The anti-blue light performance passes the TM-3 test; the infrared absorption rate is tested by an optical transmittance tester; and the hardness is tested by the Barcol hardness tester. The qualified lens in the table only means that the lens has no spots, scratches, profiles, junks, burrs, and cracked edges.

[0092] According to the data in Table 1, it can be seen from Comparative Examples 1, 2 and 6 that the use of different initiators or different ratios of initiator will cause serious fogging of the lens or even non-formability of the lens. The lens of the present invention can avoid fogging of the lens, and has good optical performance. It can be seen from Comparative Example 3 and Comparative Example 4 that the lens of the present invention can effectively absorb infrared light, with an infrared absorption rate being far greater than that of common infrared absorbers. It can be seen from Comparative Example 5 that the addition of a dyeing modifier in the present invention can ensure that the lens is dyed uniformly without a blotchy appearance. It can also be seen from the examples and comparative examples that different additives will have an impact on each other. While ensuring the improvement on the performance of a certain additive, it is also necessary to pay attention to whether it has an impact on other properties.

[0093] The examples of the present invention have been described above; however, the above description is exemplary, and not exhaustive, and the present invention is not limited to the disclosed Examples. Without departing from the scope and spirit of the illustrated examples, many modifications and changes are obvious to those of ordinary skill in the art.