WO2017067091A1

WO2017067091A1 - Optical protective material anti ultraviolet light and blue light

Info

Publication number: WO2017067091A1
Application number: PCT/CN2016/000485
Authority: WO
Inventors: 袁敏华; 陈建伟; 袁涛; 陈晓; 许海洲; 曾卫华
Original assignee: 袁敏华
Priority date: 2015-10-22
Filing date: 2016-08-30
Publication date: 2017-04-27
Also published as: MY192808A; CN105295279A; CN107418114A

Abstract

An optical protective material anti ultraviolet light and blue light, comprising a base, a fluorescent whitening agent, a toner for absorbing the blue light emitted by the fluorescent whitening agent and a ultraviolet light absorber; the usage amount of the fluorescent whitening agent being 0.025-20.000 grams/square meters, the usage amount of the toner being 0.001-10.000 grams/square meters; the color of the toner and the color emitted by the fluorescent whitening agent forming complementary colors; the usage amount of the ultraviolet light absorber being 0-5.000 grams/square meters; and the base being an optical transparent resin or an optical transparent binder. The product can not only prevent all the ultraviolet light, but can also prevent the blue light, preventing a human body from being damaged by the ultraviolet light, particularly being able to protect eyes from being damaged by the blue light produced by sunlight and an electronic display. This especially has preventive effect to children, students and women, being able to protect the delicate skin and slow aging.

Description

UV protection material for UV and blue light

Technical field

The present invention relates to optical materials, and more particularly to an optical protection material that is resistant to ultraviolet light and blue light.

Background technique

Ultraviolet light is an invisible light with a shorter wavelength than visible light. The wavelength range from 280nm to 400nm is not only from sunlight. Various artificial light sources, such as ultraviolet light, computers, televisions, etc., also produce certain Ultraviolet light. Excessive ultraviolet radiation has certain damage to human skin and eyes, causing wrinkles, pigmentation, aging and other phenomena, which can lead to solar dermatitis and sunburn, or sun keratosis of skin and mucous membranes, even Cause cancer. At the same time, ultraviolet radiation can also damage Langerhans cells in the epidermis, and the main role of L cells is to fight against external attacks with T cells, which will destroy the body's immune system and reduce immunity. Harmful light from ultraviolet rays can cause fatigue, discoloration and embrittlement of furniture, especially for children, students and women. Long-term exposure to harmful light will eventually lead to malignant melanoma. Blue light is high-energy visible light with a wavelength of 400-500 nm and a frequency of 6.1-6.7×10 ¹⁴ Hz. Blue-ray radiation has a strong damage to human eyes and vision. The WHO WHO Eye Association announced that from 2006 to 2008, more than 30,000 people worldwide were blinded by blue-light radiation. These short-wave blue light, especially the high-energy region of 400nm-450nm, has extremely high energy and can penetrate the lens to reach the retina. Causes photochemical damage to the retina, directly or indirectly causing damage to cells in the macula.

In order to prevent ultraviolet rays from harming the human body, the Chinese invention patent application CN101831126A discloses a "full anti-ultraviolet anti-fatigue and anti-malignant black cord cell carcinoma optical protection material" by adding a certain amount of fluorescent whitening agent to the optical resin and / or UV absorber and β-1 # decomposition anti-reflection agent, without losing the original light transmittance and clarity of the material, to obtain the full UV protection effect.

Although the fluorescent whitening agent used in the technical solution is added to the base material, although the function of preventing ultraviolet rays below 400 nm can be well performed, the fluorescent whitening agent absorbs the ultraviolet rays entering the light-emitting agent to reduce the energy level to form blue light. And it will be emitted, it will stimulate people's eyes and produce secondary light pollution. If you use this material to make optically transparent sheets, blue light is very harmful to the human eye, far more than the damage of ultraviolet rays to the eyes; ultraviolet light is usually absorbed when passing through the transparent film or the cornea of the eye, and this high-energy short-wave blue light is It can penetrate our eyes to reach the bottom of the retina and directly cause irreversible damage to the nerves of the eye.

Summary of the invention

The technical problem to be solved by the present invention is to provide optical protection against ultraviolet rays and blue light in view of the current state of the art. Protective material.

The technical solution adopted by the present invention to solve the above technical problems is: the optical protection material for preventing ultraviolet rays and blue light, characterized by comprising a base material, an optical brightener, and a coloring agent for absorbing blue light emitted by the fluorescent whitening agent. And UV absorbers;

The fluorescent whitening agent is used in an amount of from 0.025 to 20.000 g/m 2 in terms of surface area of the finished product, and the amount of the toner is from 0.001 to 10.000 g/m 2 in terms of surface area of the finished product; The color emitted by the fluorescent whitening agent forms a complementary color:

The ultraviolet absorber is used in an amount of from 0 to 5.000 g/m 2 based on the surface area of the finished product;

The binder is an optically transparent resin or an optically clear adhesive in an amount of the balance.

Preferably, the toner may be an orange coloring agent and/or a yellow coloring agent.

Alternatively, the toner may be selected from the group consisting of a lemon yellow agent, an orange agent, and/or a green agent.

Alternatively, the toner may be selected from at least two of a yellow agent, a blue agent, a red agent, a violet agent, and a black agent.

More preferably, the toner is a mixture of P.Y.12, P.R. 53:1 and P.B.15:3, and the weight ratio of the three is 7.5 to 4.5:5 to 2:2 to 0.5.

Further, in the above respective aspects, the toner has an absorption wavelength of 410 to 500 nm.

The optically transparent resin in each of the above embodiments may be selected from the group consisting of PET, PVC, PVB, PC, PVP, PS, PE, PP, ABS, PA, PPE, PBT, PSF, PAR, PEEK, LCP, PMMA or EVA.

The optically clear adhesives in each of the above embodiments are finished adhesives, ie, include dry-based adhesives, solvents, and/or functional additives. The optically clear adhesive is preferably an acrylate adhesive, a polyurethane adhesive, a polyamide adhesive, a polyester adhesive or an epoxy adhesive.

The fluorescent whitening agent in each of the above embodiments may be selected according to any one of the prior art as needed. Preferably, the fluorescent whitening agent selects bisbenzoxazole, distyrylbenzene or stilbene. Base benzene fluorescent whitening agent.

More preferably, the fluorescent whitening agent may be selected from 2,5-bis(5-tert-butyl-2-benzoxazolyl)thiophene and 2,2'-(4,4'-distyryl). Dibenzoxazole, fluorescent whitening agent CBS-127, fluorescent whitening agent CBS-127-P, fluorescent whitening agent SP-128, fluorescent whitening agent OB, fluorescent whitening agent OB-28, fluorescent whitening agent OB-1, Fluorescent Brightener OB-12, Fluorescent Brightener KWN, Fluorescent Brightener KCB, Fluorescent Brightener KCB-2, Fluorescent Brightener KSN, Fluorescent Brightener SWN, Fluorescent Brightener CBS- X or fluorescent whitening agent FP.

The ultraviolet absorber may be selected from the group consisting of 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole, 2-(2'-hydroxy-3). ',5'-dipentylphenyl)benzotriazole, 2-(2'-hydroxy-5'-teoctylphenyl)benzotriazole, 2-(2'-hydroxy-3'-tert Butyl-5'-methylphenyl)-5-chlorobenzotriazole, 2-(2H-benzotriazol-2-yl)-6-(dodecyl)-4-methylphenol , 2-hydroxy-4-n-octyloxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-(2'hydroxy-5'-methylphenyl)benzotriazole, At least one of ether aldehyde, UV326, UV234, UV360, UV164, and UV24.

The addition of the ultraviolet absorber can further improve the stability of the optical protection material and further improve the anti-purple External effect.

The above various aspects of the present invention may further add a dispersing agent, such as polypropylene wax PP203, ethylene bis-stearic acid amide EBS, EBS-SF dispersing agent, etc., as needed to improve the dispersion effect of the toner in the material. Make the finished optical product more uniform in color. In particular, EBS-SF dispersant, after adding EBS-SF dispersant to the finished surface area of 0.030 g / m2, can significantly improve the color uniformity, clarity and anti-blue light effect of the product.

Compared with the prior art, the technical solution provided by the present invention utilizes the absorption characteristic of the optical brightener by the optical brightener to solve the damage of the blue light in the visible light high energy region of 400-410 nm. In addition, the fluorescent whitening agent can absorb the near-ultraviolet light with higher energy to make the molecule enter the excited state, and then the excited molecule transitions to the lower energy ground state and emits fluorescence. Due to the energy loss, the fluorescent wavelength of the radiation becomes longer. Generally, the visible light of 410-450 nm: at the same time, the absorption of light wavelengths by various toners is different, and the ratio is matched with the colorant of the added fluorescent whitening agent type to solve the wavelength of 410-500. Nano blue light damages the eyes.

The optical protection material provided by the invention can find the complex between various coloring agents or colorants by studying and practicing the commonly used organic or inorganic coloring agents without damaging the transparency and clarity of the original materials. The combination can effectively reduce the blue light emitted by the fluorescent whitening agent, and the correspondence between conversion and absorption between the different types of fluorescent whitening agent and the matching coloring agent, so that the product of the invention can not only fully It is UV-resistant and absorbs the blue light emitted by the fluorescent whitening agent, effectively avoiding secondary light pollution, and effectively absorbs harmful blue light from the outside, thereby achieving the effect of preventing blue light; preventing ultraviolet rays and anti-blue light effects. , manufacturing costs are low.

detailed description

The invention is further described in detail below with reference to the embodiments.

Examples 1 to 15 are examples of optical protective materials, the formulations of which are shown in Table 1.

The method for producing the ultraviolet shielding and blue light shielding material can be selected from any one of the prior art as needed, such as extrusion, injection molding, blow molding, calendering, pressure injection, and the like.

This embodiment adopts an extrusion method, specifically, after mixing the materials in proportion, and extruding into a sheet or a coil by a conventional process adapted to a specific optically transparent material.

Table 1

In Table 1, the amounts of the fluorescent whitening agent, the ultraviolet absorbing agent, and the toner are based on the surface area of the finished sheet or web, regardless of the thickness of the finished product. Example 14 and Example 15 are comparative examples.

Table 2 is an example of an ultraviolet transparent and anti-blue light optically clear adhesive, and its specific formulation is shown in Table 2.

The optically clear adhesives in Table 2 are all commercially available finished adhesives, including dry-based adhesives and solvents. Includes other functional additives. The preparation methods of Examples 16 to 22 were carried out by mixing the components, stirring them until they were sufficiently uniform, and then applying them to the surface of the object to be bonded, thereby obtaining an ultraviolet transparent and anti-blue light-resistant optically clear adhesive layer. The amount of fluorescent whitening agent and colorant in the formulation is based on the coated surface area of the optically clear adhesive, regardless of the thickness of the coated layer. Example 22 is a comparative example.

Table 2

The test methods for UV resistance of the finished products prepared in Examples 1 to 22 are:

Place the RMB flat on the horizontal table, face up, and illuminate the RMB with UV400 ultraviolet light. The distance between the UV lamp and the banknote is about 5cm. An obvious watermark will appear directly under the word “People”. At this time, the above-mentioned sheet (except for Examples 14, 15, 22) was placed between the renminbi and the ultraviolet lamp, the watermark disappeared completely at a moment, the ultraviolet ray did not penetrate the sheet, and all were blocked on the outside of the sheet. While the sheets of Examples 14, 15, 22 were tested in the same manner, the watermark did not change. It is indicated that the optical protection material produced by the invention achieves UV-resistant UV400.

The anti-blue light test method is:

The white paper was placed flat on a horizontal table, and the center wavelength was irradiated on the white paper at 420 nm. The distance between the lamp and the white paper was about 5 cm, and a clear blue-violet light appeared on the white paper. At this time, the above-mentioned sheet (except for Examples 14, 15, 22) was placed between the white paper and the lamp, and the blue light on the white paper disappeared, and the blue light was absorbed by the sheet and blocked, and could not pass through the sheet. The effect of blocking blue light, and the sheets of Examples 14, 15, 22 were tested by the same method, and the blue light on the white paper hardly changed, indicating that the optical protection material prepared by the invention effectively protects the human eye from retinal damage. .

Claims

An optical protection material for preventing ultraviolet rays and blue light, comprising: a binder, an optical brightener, a toner for absorbing blue light emitted by the fluorescent whitening agent, and an ultraviolet absorber;

The fluorescent whitening agent is used in an amount of from 0.025 to 20.000 g/m 2 in terms of surface area of the finished product, and the amount of the toner is from 0.001 to 10.000 g/m 2 in terms of surface area of the finished product; The color emitted by the fluorescent whitening agent forms a complementary color: the amount of the ultraviolet absorbing agent is 0-5.000 g/m 2 based on the surface area of the finished product;

The binder is an optically clear resin or an optically clear adhesive.
The optical protection material according to claim 1, wherein the toner is an orange coloring agent and/or a yellow coloring agent.
The optical protection material according to claim 1, wherein the toner is selected from the group consisting of a lemon yellow agent, an orange colorant, and/or a green agent.
The optical protection material according to claim 1, wherein the toner is at least two selected from the group consisting of a yellow agent, a blue agent, a red agent, a violet agent, and a black agent.
The optical protection material according to claim 4, wherein the toner is a mixture of PY12, PR53:1 and PB15:3, and the weight ratio of the three is 7.5 to 4.5:5 to 2:2. ~0.5.
The optical protection material according to any one of claims 1 to 5, wherein the toner has an absorption wavelength of 410 to 500 nm.
The optical protection material according to claim 6, wherein the optically transparent resin is selected from the group consisting of PET, PVC, PVB, PC, PVP, PS, PB, PP, ABS, PA, PPE, PBT, PSF, PAR, PEEK, LCP, PMMA or EVA; the optically clear adhesive is selected from the group consisting of acrylate adhesives, polyurethane adhesives, polyamide adhesives, polyester adhesives or epoxy adhesives.
The optical protection material according to claim 7, wherein the fluorescent whitening agent is selected from the group consisting of a bisbenzoxazole, a distyrylbenzene or a distyrylbiphenyl fluorescent whitening agent.
The optical protection material according to claim 8, wherein said fluorescent whitening agent is selected from the group consisting of 2,5-bis(5-tert-butyl-2-benzoxazolyl)thiophene and 2,2'-( 4,4'-distyryl) bisbenzoxazole, fluorescent whitening agent CBS-127, fluorescent whitening agent CBS-127-P, fluorescent whitening agent SP-128, fluorescent whitening agent OB, fluorescence increase White Agent OB-28, Fluorescent Brightener OB-1, Fluorescent Brightener OB-12, Fluorescent Brightener KWN, Fluorescent Brightener KCB, Fluorescent Brightener KCB-2, Fluorescent Brightener KSN, Fluorescence Increase White agent SWN, fluorescence increasing agent CBS-X or fluorescent whitening agent FP.
The optical protection material according to claim 6, wherein said ultraviolet absorber is selected from the group consisting of 2-(2'-hydroxy 3'-tert-butyl-5'-methylphenyl)-5-chlorobenzene And triazole, 2-(2'-hydroxy-3',5'-dipentylphenyl)benzotriazole, 2-(2'-hydroxy-5'-teoctylphenyl)benzotriazole , 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole, 2-(2H-benzotriazol-2-yl)-6 -(dodecyl)-4-methylphenol, 2-hydroxy-4-n-octyloxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-(2'-hydroxyl At least one of -5'-methylphenyl)benzotriazole and ether aldehyde.