CN111458901A - Highly oxygen permeable, moisture retaining and antibacterial contact lens material and method for producing the same - Google Patents

Abstract

A highly oxygen-permeable, moisturizing and antibacterial contact lens material and its preparation method. The preparation method uses polydimethylsiloxane material, silica material, terminal hydrocarbon silicone oil material, chloroplatinic acid catalyst and precious metal nanoparticle additives The contact lens material is made from equal ingredients, the weight percentage of the polydimethylsiloxane material is 60-80%; the weight percentage of the silicon dioxide material is 18-38%; the terminal hydrocarbon-based silicone oil material and the chlorine The weight percentage of the platinum acid catalyst is 1 to 4%; and in the precious metal nanoparticle additive, the weight percentage of the silver nanoparticles is 1,000 to 5,000 ppm to effectively increase the antibacterial ability and effect; the weight percentage of the gold nanoparticles is 30 to 200 ppm to effectively increase the oxygen permeability and oxygen permeability effect; and the weight percentage of platinum nanoparticles is 50 to 300 ppm to effectively increase the moisturizing ability and effect of the contact lens material.

Description

High oxygen permeability, moisturizing and antibacterial contact lens material and method for producing the same

technical field

The present invention relates to a contact lens material with high oxygen permeability, moisture retention and antibacterial properties and a preparation method thereof, especially a contact lens material that can make the contact lens material contain precious metal nanoparticles such as gold nanoparticles, platinum nanoparticles and silver nanoparticles, and They have the material properties of high oxygen permeability, high moisture retention and high antibacterial properties, so that the soft contact lenses made of them can fully adapt to the dry environment in the air-conditioning ventilation system in today's urban areas, so that the wearer's eyeballs can grow longer. In addition to maintaining a comfortable and natural wearing feeling even when wearing contact lenses for a long time, the soft contact lenses can still be protected by the "high antibacterial properties" after they are adhered to impurities, dirt and dust in the air or tears. ” material characteristics to achieve the degradation of organic substances such as bacteria, viruses or molds, and effectively achieve excellent antibacterial and sterilization effects to ensure the safety and health of the wearer’s eyes, and effectively reduce the wearer’s invisibility to the soft invisible. Potential risks of thorough cleaning of spectacle lenses.

Background technique

Although the idea of "wearing the lens directly on the eyeball" was proposed by "Da Vinci" as early as 1508, in 1636, the famous French physicist "René Descartes" also had a similar idea. However, it was not until 1887 that these ideas and suggestions were realized by the German scientist "Adolf Eugen Fick", who succeeded in making the world's first glass contact lens, due to the low oxygen permeability of the glass contact lens , It is easy to cause eye diseases such as keratitis, which makes it difficult to be accepted by the public and cannot be popularized. However, this glass contact lens has aroused the research of contact lens materials all over the world; among them, in 1938, scientists "Mullen" and "Obring" used PMMA as the material (ie, polymethyl methacrylate (polymethyl methacrylate)) methacrylate), also known as "acrylic", "acrylic" (Acrylic) or plexiglass (Lucite), etc., has the advantages of high transparency, low price and easy machining, and is a glass replacement material that is often used today) , manufactured the world's first pair of all-plastic contact lenses; in 1940, the Obring Company in New York, USA, then developed another all-plastic contact lens with acrylic plexiglass material; in 1961, the Czech Republic The chemist "Otto Wichterle" invented the world's first soft contact lens. In 1970, he also introduced a breathable hard contact lens (RGP), which is due to its small diameter (only 9mm). left and right), and is made of high oxygen permeability material, which has since become an ideal choice for contact lens wearers.

As of 2004, according to statistics, more than 120 million people around the world have worn contact lenses. ) has been developed one after another, and the number of people wearing contact lenses around the world has also continued to increase. Although there are many types of contact lenses on the market, these contact lenses can still be roughly divided into the following types according to their manufacturing materials, wearing time and lens life and other conditions:

(1) According to the degree of softness and hardness of the production materials, they are generally divided into hard contact lenses and soft contact lenses;

(2) According to the length of wearing time, they are roughly divided into long-wear contact lenses and daily-wear contact lenses; and

(3) According to the difference in the lifespan of the lens, it can be roughly divided into one-time disposable type and long-term use type.

Among them, hard contact lenses are generally made of PMMA polymer materials. In recent years, rigid gas-permeable (RGP) oxygen permeable contact lenses are more popular, and their oxygen permeability is even better than that of soft contact lenses. One of them is The model is suitable for wearers when sleeping at night, and is still called "OK lenses"; because soft contact lenses have better adaptation to the eyeball and can make the wearer feel more comfortable, so far, soft contact lenses Contact lenses have become almost the most popular type of lens. Generally speaking, soft contact lenses are made of plasticized materials with strong hydrophilicity, such as HEMA (polyhydroxyethyl methacrylate) polymer. This plasticized material allows external oxygen to enter the cornea of the eye through the lens, and Make the wearer have a more comfortable wearing experience. Even so, because the eyes are the window to people's soul, in order to ensure that the soft contact lenses will not cause damage to the eyes, the industry continues to study according to the material characteristics of the soft contact lenses, and wear them according to the requirements. The length of time is subdivided into daily wear, two-week, monthly and traditional annual wear. However, based on factors such as hygiene, convenience, and health, it is expected that the damage caused by improper handling can be greatly reduced. Caused by eye infection or other inflammation, most people choose to wear soft contact lenses for a short period of time; colored contact lenses are designed to make the wearer's pupils larger, brighter, more energetic, or A contact lens with cosmetic function or decorative effect (such as disposable blue pupil, etc.) that can change the color of the pupil It is called "color contact lenses". In addition, since this kind of colored contact lenses was invented in South Korea, and in recent years, with the help of Hallyu audio-visual programs, it has become rapidly and widely popular among young people in various metropolitan areas in East Asia, especially Post-80s and post-90s beauty-loving women, its main function and function can make the wearer's eyes enlarge and become more piercing, so, after matching with various pupil colors, it will effectively increase the difference of the eyes Beauty effect and charm, according to this, all colored contact lenses belong to disposable contact lenses.

In addition, in order to more objectively identify the characteristics of the aforementioned various contact lenses, the industry has formulated the following identification parameters for contact lenses, so that the wearer can identify their related characteristics:

(1) water content - after the contact lens material is saturated with water, the percentage of water in the total weight;

(2) Base arc (BC) - the central arc of the inner surface of the lens; the base arc is longer, and the arc surface of the lens is flat; the base arc is shorter, and the arc surface of the lens is curved;

(3) Diameter (DIA) - the straight-line distance between two points corresponding to the edge of the lens;

(4) Optical zone - the range of the base arc of the lens, that is, the lens area with refractive power;

(5) Center thickness - the thickness of the center point of the lens;

(6) Dk value (ie, oxygen permeability coefficient) - used to define the degree of oxygen passing through the contact lens material; where D is the diffusion coefficient of oxygen in the material, and k is the solubility coefficient. Generally speaking, the higher the water content, the higher the Dk value;

(7) Dk/t (oxygen conductivity) - used to define the actual speed of oxygen passing through a certain thickness of contact lens; among them, t represents the thickness; the Dk/t value of daily-wear contact lenses should be greater than 24, and long-wear lenses The Dk/t value of the contact lens should be greater than 87; that is, the thinner the thickness, the better the relative oxygen conductivity;

(8) EOP (Iso-Oxygen Rate)—the percentage of oxygen permeability between the contact lens and the cornea on the living body; among them, the maximum value of EOP is 21%, and the EOP value of daily-wear contact lenses should be greater than 12%. Type contact lenses should have an EOP value greater than 18%; and

(9) Refractive index - the ratio of the speed of light in air to the speed of light in the material; the higher the refractive index of the material, the stronger the ability of incident light to refract.

At present, the materials for making various soft contact lenses on the market can generally be roughly divided into two categories: the aforementioned HEMA materials and non-HEMA materials. The polymer material is the earliest hydrophilic plastic material used to make contact lenses. Its main advantages are that it is soft, absorbent, and has a water content of about 38%; its disadvantage is that it only has Partial oxygen permeation effect. It was not until 1961 that Wichter and Lim jointly developed the "Hydrogel" material (Hydrogel) of polymer materials. After the American Bausch & Lomb Company obtained a production technology license agreement in 1966, the "water glue" material was widely used. After being used in the manufacture of soft contact lenses and disposable contact lenses, due to the excellent hydrophilicity and adaptability of the "water glue" material, the wearer's wearing response is very good, so that the "water glue" The material has gradually replaced other materials, and has become the most widely accepted soft contact lens material by consumers. The water content of soft contact lenses made of the "water glue" material is between 30% and 58%, and the oxygen permeability (Dk/t) is related to the water content, generally ranging from 8 to 58%. 33. This is because when oxygen is to pass through the hydrogel material (ie, the soft contact lens itself), it must be carried by the water molecules (H ₂ O) contained in the hydrogel material. Therefore, the soft contact lens The higher the water content of the spectacle lens, the higher the oxygen permeability value. However, limited by the material properties of the "water glue" material itself, even if the water content of the "water glue" material can be made to reach the highest value (about 75%), its oxygen permeability cannot be higher than Dk/t 35. Soft contact lenses with higher water content are also more likely to allow the moisture in the material to escape and lose, so it is ultimately necessary to replenish water from tears to moisturize the soft contact lenses and/or eyeballs. In addition, special attention should be paid to the fact that the "hydrogel" material is a "silicone hydrogel" or "silicon hydrogel" with silica gel as the base material, and the "silicon hydrogel" is an organic high Molecular materials, with excellent hydrophilicity, have been sold on the market since about 1999, and immediately attracted the attention of soft contact lens manufacturers, and follow-up research and development improvements were carried out accordingly. It is expected to greatly and effectively improve the oxygen permeability of soft contact lenses without relying on water molecules. Natural pores are generated between materials, so that oxygen can follow the channels or paths formed between adjacent pores, and pass through the "silicon hydrogel" material in sequence and freely, thereby greatly increasing its oxygen permeability to Dk /t 80 or more. However, because the silicon molecules themselves have a certain hardness, and the silicone hydrogel lens with a higher oxygen permeability value also means that the "silicon hydrogel" that has embedded a large number of silicon molecules will have material hardness (also known as "silicon hydrogel"). The defect that the modulus (Modulus) becomes harder and harder, resulting in the problem that the wearer often feels that there is a foreign body in the eye. In addition, due to the higher oxygen permeability of the "silicon hydrogel" lens, it also means that the The surface of the material is more hydrophobic, which makes it easier to accumulate deposits on the surface. For this, the wearer must pay special attention to the cleaning and maintenance of the soft contact lens frequently, so as to ensure the safety of the eyes. Comfort and health.

The material and manufacturing technology of the "Hypergel" material improved from the aforementioned "Silicone Hydrogel" have been approved by the United States Patent and Trademark Office on March 20, 2012. For the US invention patent No. US 8,138,290 B2, the "super hydrogel" is a new generation of soft contact lens material after "Silicone Hydrogel". Molecular bonding technology allows the material to achieve extremely high hydrophilicity and water content without the need to embed silicon molecules. It can remain in the material and is not easy to escape and lose. This high water retention technology can also be used in intraocular lens and corneal implants in the future, so that the implants have better human affinity. Generally speaking, when the "super glue" is used to make soft contact lenses, it can not only make it a soft contact lens with a water content of up to 78%, but also through the water retention technology described in its patent, the It can constantly maintain its own water content of 78% without relying on the external environment to replenish water. In addition, in the state that no silicon molecules are embedded at all, the oxygen permeability value can also be between "water glue" and "silicon water glue" materials, and as high as Dk/t 42.

To sum up, the materials currently used in the production of soft contact lens lenses, regardless of the composition and proportion of the materials, are ultimately aimed at making the soft contact lens material have a certain degree of softness, but still. It can maintain high water content and high oxygen permeability, so that soft contact lenses are not prone to drying, breakage, cracking, deformation or organic matter precipitation, etc., and can effectively prevent and avoid dry eyes and vision loss of the wearer. Or uncomfortable feelings such as infection and inflammation. Regardless of the material used in the soft contact lens, because the soft contact lens must be directly worn on the user's eyeball and soaked in the user's tears, the material characteristics of high water content and high oxygen permeability, It also greatly increases the interaction between the tear mucosa and the soft contact lens, and greatly reduces the anti-precipitation properties of the soft contact lens material, thereby increasing the risk of organic deposits forming on the soft contact lens, making the wearer's eye Physiologically naturally occurring proteins are continuously deposited on the lens surface. Excessive protein deposits will not only reduce the transmittance of soft contact lenses, but even lead to blurred vision. In addition, due to its high water content and high oxygen permeability The material characteristics of high value will make it difficult to remove the protein deposits accumulated on the lens, which will easily breed bacteria and lead to eye infection and cause severe inflammation symptoms, or the lens will easily deteriorate due to the penetration of organic deposits into the lens material. , hardening and other defects, which lead to problems such as breakage, deformation and curling of the lens, which may easily cause the joint area between the central hard part and the surrounding hydrogel part to be torn, resulting in difficulty in removing the lens, and even easy for the wearer. Eyes with symptoms of corneal edema.

In view of this, regular inspection, cleaning and maintenance of soft contact lenses is an important task in the daily life of wearers. Generally speaking, in order to achieve the purpose of thorough cleaning and perfect protection of soft contact lenses , Soft contact lenses that are not worn should be soaked in a care solution in a well-sealed care box and stored, and the soaking time is generally more than 6 hours; when storing, it is advisable to use fresh The care solution can be stored for at least 30 days without opening the lid, at a suitable temperature and out of direct sunlight. However, once the care box is opened or needs to be stored for a longer period, it needs to be replaced with fresh care solution. In addition, in order to ensure the wearing comfort and safety of soft contact lenses, wearers need to regularly perform the following routine maintenance and cleaning tasks for soft contact lenses:

1. Use artificial tears as the lubricating fluid between the eyes and the lens: in order to make the soft contact lens with poor oxygen permeability, it can produce a better hydrophilic condition, so as to maintain the wetness of the lens, so that it can be worn. The eyeball of the user will not experience dryness and discomfort.

2. Use cleaning solution and protein enzyme film to clean the lens regularly: the cleaning solution is a surfactant, although it has a better removal effect on the grease attached to the lens, but it is usually less effective in cleaning protein deposits. This is because many tiny air holes are formed on the surface of soft contact lenses, and these protein deposits will naturally be embedded in the tiny air holes, thus greatly reducing the clarity of the lens and becoming a breeding ground for bacteria, A breeding ground for viruses and harmful microorganisms. Therefore, the wearer must not only use a cleaning solution to clean the greasy dirt on the lens every day to maintain the brightness of the lens; it is also necessary to use a protein-removing enzyme film regularly to completely remove the residual protein deposits on the lens to ensure the cleanliness of the lens. , so as to effectively avoid the breeding of bacteria, viruses and harmful microorganisms.

4. Disinfectant: Since the grease and protein deposited on the lens are breeding grounds for bacteria, viruses and harmful microorganisms, in order to ensure the health and safety of their own eyes, the wearer should take off the soft contact lens every day. Disinfectants, such as physiological saline, hydrogen peroxide, etc., should be used to clean, disinfect, clean, soak and preserve soft contact lenses; among them, saline is the most commonly used disinfectant, cleaning solution and soaking solution. At present, there are two types of physiological saline on the market, preservative-containing and preservative-free. Regardless of which type, in order to ensure its safety in use, it should be used up within the period of use specified by the manufacturer.

If the wearer fails to perform the aforementioned maintenance and cleaning work due to laziness or temporary negligence, the wearer's eyes will be prone to the following eye diseases due to frequent wearing of unclean soft contact lenses:

1. Giant papillary conjunctivitis: It is one of the most common complications among those who wear soft contact lenses; its causes and the long-term use of soft contact lenses will form a composite layer on the surface of the lenses. These deposits or mechanical damage will gradually increase with the increase of use time and become a state that cannot be removed or reversed, thereby irritating the orbital soft tissue and the eyeball, causing problems such as itching and tearing. This leads to the gradual hardening of the conjunctiva of the upper eyelid and the formation of large flat papillae. Finally, symptoms such as increased mucous secretions, itching and tearing in the eye occur; and

2. Acanthamoeba keratitis: Although it is a relatively rare infectious disease among various keratitis diseases, it is quite difficult to diagnose and treat, and may even lead to serious consequences of blindness; Caused by keratitis caused by Acanthamoeba, 80% to 85% of people who wear soft contact lenses, especially those who do not perform the cleaning work of soft contact lenses, but love it Those who wear soft contact lenses and engage in activities such as swimming and bathing; once the cornea is traumatized and comes into contact with polluted water, it is very easy and very likely to be infected by acanthamoeba keratitis; the symptoms are mostly unilateral Onset, the infected eyes will have symptoms such as foreign body sensation, photophobia, and tearing, among which about 50% of the infected eyes will still have severe pain.

According to statistics, people currently living in metropolitan areas around the world spend about 80 to 90% of their time living and working in a closed indoor environment (including: homes, offices, factories or other buildings). The impact of pollutants in the air in space on people's health should naturally receive great attention. In particular, Taiwan, China is located in the subtropical zone, which has a humid and high temperature climate for many years. Bacteria, viruses and molds are easy to breed. Therefore, it is necessary to wear soft contact lenses for a long time every day to live and work in a closed air-conditioning system. For the vast majority of people, the selection of soft contact lens materials, regular cleaning, maintenance and maintenance have become important matters that must be paid special attention and implemented. Based on this, how to design a new contact lens material for the vast group of people who must wear soft contact lenses for a long time every day and live and work in various air-conditioning and ventilation systems in urban areas. A new soft contact lens made of the contact lens material not only has the material properties of "high oxygen permeability" and "high moisture retention", but also enables the new soft contact lens to fully adapt to the drying of the air-conditioning ventilation system In addition to maintaining a comfortable and natural wearing experience for the wearer's eyeballs, the additional "high antibacterial" material properties of the new soft contact lens make it more resistant to impurities in the air or tears. , dirt and dust, due to the persistence of the "high antibacterial" ability, and its material properties that can produce photocatalyst effects in light or no light conditions, it can specifically achieve antibacterial, virus or mold. It can effectively achieve excellent antibacterial and sterilization effects, ensure the safety and health of the wearer's eyes, and effectively reduce the many risks caused by the wearer's failure to thoroughly clean and maintain the soft contact lens. That is to say, it has become an important issue that major contact lens designers and manufacturers are eager to solve, and it is also an important issue that the present invention intends to conduct in-depth discussion in the future.

SUMMARY OF THE INVENTION

In view of the aforementioned many problems existing in the environment of air-conditioning ventilation systems in urban areas, the inventor has finally developed and designed a highly oxygen-permeable, moisturizing and antibacterial contact lens material of the present invention and its manufacturing method after long-term research and experimentation, In order to make the contact lens material have the material properties of high oxygen permeability, high moisture retention and high antibacterial properties due to the inclusion of gold nanoparticles, platinum nanoparticles and silver nanoparticles and other precious metal nanoparticles, so that the soft type of the contact lens can be made according to it. In addition to fully adapting to the dry environment of the air-conditioning and ventilation system, the contact lenses can keep the wearer's eyeballs comfortable and natural, and the additional "high antibacterial" material properties of the soft contact lenses make it easier to wear. After it adheres to impurities, dirt and dust in the air or tears, it can still achieve the degradation of bacteria, viruses or molds and other organic substances due to its "high antibacterial" ability, effectively achieving excellent antibacterial and sterilization. Bacterial effect to ensure the safety and health of the wearer's eyes, and effectively reduce the potential risk of the wearer not thoroughly cleaning the soft contact lens.

The main purpose of the present invention is to provide a highly oxygen permeable, moisturizing and antibacterial contact lens material, including a polydimethylsiloxane material, a silicon dioxide material, a hydrocarbon-based silicone oil material at one end, a chloroplatinic acid catalyst and A precious metal nanoparticle additive and other components; wherein, the polydimethylsiloxane (PDMS) material, which is in an oily liquid state, is a polymer organosilicon compound; the silicon dioxide (Silicon dioxide) material , in an oily liquid state; the terminal hydrocarbon-based silicone oil (Silicon oil, Hydroxyl-terminated) material is also in an oily liquid state; the chloroplatinic acid catalyst is matched with the terminal hydrocarbon-based silicone oil. The components such as silica and the terminal hydrocarbon-based silicone oil perform catalytic action to break the hydrocarbon-based bridge in the process of cross-linking and maturing of these components, and then re-bridge, so that these components are cross-linked and matured into silicone polymerization. Polymerized siloxanes or polysiloxanes, commonly known as Silicone Rubber; the precious metal nanoparticle additive, also in oily liquid state, contains triglycerides, gold nanoparticles, platinum nanoparticles, silver nanoparticles and dispersants and other ingredients; , the triglyceride is used to make the additive dissolve in oily materials such as the polydimethylsiloxane, the silicon dioxide, and the end-hydrocarbyl silicone oil, and make them fully mixed with each other, so that the chloroplatinum The acid catalyst and the terminal hydrocarbon-based silicone oil can perform catalytic action, so that the components such as the polydimethylsiloxane, the silicon dioxide and the terminal hydrocarbon-based silicone oil are cross-linked and matured into a silicone polymer; in the additive, the three The weight percentage of acid glycerides is 90%; the gold nanoparticles, the platinum nanoparticles and the silver nanoparticles are collectively referred to as noble metal nanoparticles, and these noble metal nanoparticles are uniformly dispersed in the aqueous solution, and their weight percentage is 10%; the The dispersant is used to make the additive evenly dispersed in the oily materials such as the polydimethylsiloxane, the silicon dioxide and the terminal hydrocarbon-based silicone oil, and its weight percentage is 10%, and it is characterized in that: wherein, the The weight percentage of the polydimethylsiloxane material is 60-80%; the weight percentage of the silica material is 18-38%; the weight percentage of the terminal hydrocarbon-based silicone oil material and the chloroplatinic acid catalyst is 1-4 %; and in the precious metal nanoparticle additive, the weight percentage of the silver nanoparticles is 1,000-5,000 ppm, so as to effectively increase the antibacterial ability and effect of the contact lens material, and the weight percentage of the gold nanoparticles is 30-200 ppm, with Effectively increase the oxygen permeability and oxygen permeability effect of the contact lens material; and the weight percentage of the platinum nanoparticles is 50-300 ppm, so as to effectively increase the moisture retention ability and effect of the contact lens material.

In this way, since the contact lens material of the present invention has the material properties of "high oxygen permeability" and "high moisture retention", the soft contact lens made therefrom can not only fully adapt to the dry environment in the air-conditioning ventilation system of the current metropolitan area , so that the wearer's eyeballs can still maintain a comfortable and natural wearing experience, the additional "high antibacterial" material properties of the soft contact lens lens make it more resistant to impurities and dirt in the air or tears. After the dust is removed, the "high antibacterial" ability can still achieve the degradation of organic substances such as bacteria, viruses or molds, and effectively achieve excellent antibacterial and sterilization effects to ensure the safety and health of the wearer's eyes, and Effectively reduce the potential risk that the wearer does not thoroughly clean the soft contact lens.

For the convenience of your examiners to have a further understanding and understanding of the purpose, technical characteristics and effects of the present invention, some embodiments are now specially cited, and in conjunction with the accompanying drawings, the detailed description is as follows:

Description of drawings

Fig. 1 is the production flow schematic diagram of the contact lens material of the present invention and soft contact lens; And

FIG. 2 is a partial cross-sectional schematic diagram of a molding machine for LIM silicone rubber according to the present invention for making soft contact lenses.

Description of reference numbers:

LIM Silicone Rubber Molding Machine  … 1

The first feeding cylinder …… 10

Second feed cylinder …… 11

The third feed cylinder …… 12

The first pressurizing pump …… 20

Second booster pump …… 21

Third booster pump …… 22

Dosing Devices  … 30

Injection device …… 40

Mixing device …… 50

Close the nozzle  … 60

Contact Lens Molding Mould …… 70

Contact Lens Material Agent A ………… A

Contact lens material agent B ………… B

Contact lens material agent C ………… C

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

"Catalyst" is a material additive, which is used to reduce the energy consumed by the material to perform chemical reactions, and to speed up the chemical reaction, but it will not destroy the structure of the material itself due to the chemical reaction. The light energy that exists in nature produces a catalytic effect to exert the characteristics of a catalyst. Generally speaking, after many nano-scale photocatalyst materials are excited by light, the surrounding oxygen and water molecules will be excited into radicals such as H ₂ · and O ₂ · with great oxidizing power. Or environmentally harmful organic and inorganic substances, not only can accelerate the reaction, and will not cause pollution. In addition, since these photocatalyst materials usually have the structure of a semiconductor crystal, the electrons in the semiconductor crystal will jump out after being hit by UV photons or other radiation (such as: alpha rays, beta rays, gamma rays or X rays). , leaving a positively charged hole with strong oxidizing ability, these electrons and holes are chemically called "electron-hole pairs", when the electrons meet the oxygen molecules (O ₂ ) in the air, they will generate reactivity Strong super oxygen molecular radical (·O ₂ ), when the hole meets the water vapor (H ₂ O) in the air, it will snatch the electrons of the hydroxyl group in the water through a photochemical reaction. The hydroxyl group immediately becomes an unstable hydroxyl radical ( OH). Once the unstable hydroxyl radical encounters foreign or organic matter attached to the surface of these photocatalyst materials, it will snatch the electrons of the other party. It stabilizes itself, so that these organic substances are oxidized and become water and carbon dioxide, which are dissipated in the air.

Now taking silver as an example, after it is nanosized, the overall surface area is greatly increased due to the thinning of the particles, and the activity becomes larger, so that the silver nanoparticles can easily release active silver ions to attract the thiol groups on the enzyme proteins in bacteria. , and quickly combine with it to make the sulfur-containing hydrocarbon group inactive, resulting in the death of bacteria. In particular, the positively charged silver ions will adsorb to each other after contacting the negatively charged microbial cells, and will sting It penetrates the cell outer wall of the microorganism, denatures the interior of the microorganism, reduces the growth ability, and makes the microbial cell unable to metabolize and reproduce until death, so it has excellent anti-bacteria and sterilization effects. In addition, when the bacteria are killed by silver ions, the silver ions will dissociate from the dead bacteria and continue to do repeated actions on other live bacteria until all bacteria are eliminated. According to this, silver nanoparticles have a long-lasting effect. It has many advantages, such as anti-bacteria, no drug resistance, no toxicity, no irritation and allergy, no need for light activation, and no pH value. In addition, it is generally believed that after the silver is nanosized, the exposed silver atoms on the surface of the nano-silver particles will increase rapidly, and many silver ions can be dissociated in the solution. These silver ions are not only the main contributors to antibacterial, but also Silver ions are continuously released from the solution to effectively achieve long-term antibacterial effects. Therefore, nano-silver particles are also known as "permanent fungicides".

At all times, at home and abroad, gold has always been considered a symbol of nobility, and its glittering appearance always attracts everyone's attention. In addition, since gold is also a very stable and antioxidant material, in addition to decorative purposes, gold is also regarded as a health food in Japan and added to tea, wine and various food materials; In Europe and the United States, gold is still used in cosmetic and skin care products such as wrinkle removal and whitening; and because gold has excellent biocompatibility, it is often used in medicine to make dentures or cardiovascular stents. Although, as mentioned above, gold is a very stable material, but due to the unique potential characteristics of nano-gold particles, it has a strong adsorption force for oxygen, so it can be used as a catalyst, according to Japanese Scientists have discovered that nano-gold particles are catalysts that can oxidize carbon monoxide into carbon dioxide. Therefore, they can be used to make masks, gas masks, water heaters, etc. to effectively avoid and prevent carbon monoxide poisoning. In addition, compared with platinum catalysts commonly used in the industry, platinum catalysts must react at high temperatures without water vapor, while nano-gold catalysts can react at room temperature and are not affected by water vapor. Some studies have pointed out that nano-gold has excellent anti-free radical ability, which is 80 times that of vitamin C. Therefore, nano-gold can also be added to biomedical materials to increase the stability and oxygen content of biomedical materials in the body. properties and oxygen permeability.

Platinum (Platinum, also known as platinum), silver and gold are rare and precious metals. Platinum is nano-processed into nano-sized particles with an average particle size of 2-3 nm, and then uniformly dispersed into a colloidal solution, it has its unique functionality and potential. Among them, the unique potential characteristics of nano-platinum particles have the ability to activate the human epidermis to absorb water molecules, thereby improving the skin's moisturizing ability and effect for a long time. Therefore, as long as nano-platinum can exist in the stratum corneum, It will continue to exert its moisturizing ability and effect. In addition, the nano-platinum itself will not be absorbed and accumulated in the human body, and the colloidal particles in the colloidal solution will also have a unique charge characteristic due to the nano-platinum, which can Absorbs water molecules and is surrounded by water molecules. According to this, when these colloidal particles are attached to the surface of human skin, the water structure of the body surface can not only be restored instantly, but also difficult to be oxidized after being coated by these colloidal particles, and can maintain a good water structure continuously, so that it can be Effectively avoid skin damage from dry environment and achieve the ultimate goal of improving skin quality. In addition, it is particularly important to mention that the nano-platinum particles will have approximately the same negative potential as the human body after colloidal solidification, and the balance of ions is also very important to maintain the water on the body surface. Not only that, the nano-platinum colloid still has an excellent negative ion generating ability (about 16 times that of forest bathing), so it can balance the ions of the skin, and after the nano-platinum is coated with these colloidal particles, it will not be oxidized. Therefore, negative ions can be continuously generated semi-permanently. In addition, since nano-platinum is also a single electron, it will stay in the stratum corneum when rubbed on the surface of the skin, and become a single electron that can quickly capture free radicals, neutralize free radicals, and exert excellent antioxidant functions and effects.

Regarding the photocatalytic effect of the above-mentioned precious metal nanoparticles, platinum and gold are taken as examples, and the brief description is as follows: After platinum and gold are nanosized, since their grain size will become equal to or smaller than the light wave, this size effect It will lead to an increase in the distance between the conduction band and the valence band, which will significantly enhance the light absorption capacity. In this way, under light irradiation, when a photon with a certain energy, or a photon with energy exceeding the semiconductor band gap, is injected into the platinum and In the semiconductor electronic structure of gold nanoparticles, an electron will be excited from the valence band to the conduction band, leaving a hole, and the hole in the valence band will snatch the hydroxyl electrons from the surrounding environment, and the hydroxyl group will become a free radical. Therefore, it can be used as a strong oxidant to achieve the degradation of organic matter such as bacteria and viruses to kill bacteria and viruses.

Generally speaking, ions are charged atoms, atomic groups or molecules, which are extremely small particles. There are two types of ions, the positively charged ones are called "positive ions", and the negatively charged ones are "negative ions". Taking water (H ₂ O) as an example, the atom of hydrogen (H) is a nucleus with a positively charged proton surrounded by a negatively charged electron. The positively charged state, that is, ionized hydrogen (H ⁺ ). For oxygen (O), there are 8 positively charged protons in the nucleus, surrounded by 8 electrons, 2 in the inner layer and 6 in the outer layer, but the outer energy level can accommodate 8 electrons, and there are more 2 vacancies, therefore, oxygen can easily take the atomic state of electrons from other places, this process is also called "oxidation". Therefore, the oxygen atom eager to obtain electrons and the hydrogen atom with one electron can easily combine to form water molecules. If the water is decomposed by external energy, it will become a positively charged hydrogen ion (H ⁺ ), and a negatively charged hydroxide ion (OH ^- ). But in the natural environment, hydroxide ions exist in the form of negative ions attached to water (H ₂ O+OH ^- = H ₃ O ₂ ^- ), because water molecules are one of the most easily ionized molecules in the natural environment Therefore, when there are many negative ions in the environment, it means that the content of negatively ionized water molecules in the environment is very rich, and the air contains more negatively ionized water molecules. It is generally believed that it will make the organism feel comfortable and pleasant, so "negative ions" are also called "comfort ions", "vigor ions" or "vitamins in the air".

In view of the material properties of "high antibacterial", "high oxygen permeability" and "high moisture retention" after the aforementioned rare precious metal materials (ie, silver, gold, and platinum) are nanosized into nanoparticles, the inventors thought of adding these components. To the polydimethylsiloxane materials and/or silica materials traditionally used to make contact lenses, in order to make the contact lenses made according to them have "high antibacterial", "high oxygen permeability" and The characteristics of "high moisture retention" can make up for the deficiencies and defects of traditional contact lenses in the characteristics of "antibacterial", "oxygen permeability" and "moisturizing", so that the soft contact lenses made of the contact lens material of the present invention The lens can not only fully adapt to the dry environment in the air-conditioning and ventilation system of today's urban areas, so that the wearer's eyeball can always maintain a comfortable and natural wearing experience, the soft contact lens has additional "high antibacterial" material characteristics, Even after it adheres to the impurities, dirt and dust in the air or tears, it can still achieve the degradation of bacteria, viruses or molds and other organic substances due to the "high antibacterial" ability, effectively achieving excellent antibacterial and sterilization. Bacterial effect to ensure the health and safety of the wearer's eyes, and effectively reduce the potential risk of the wearer not thoroughly cleaning the soft contact lens.

A highly oxygen permeable, moisturizing and antibacterial contact lens material of the present invention comprises a polydimethylsiloxane material, a silicon dioxide material, a hydrocarbon-based silicone oil material at one end, a chloroplatinic acid catalyst and a precious metal nanoparticle additive Among them, the polydimethylsiloxane (Poly dimethylsiloxane, PDMS for short), in the form of oily liquid, is a high molecular organosilicon compound, also known as organosilicon, which is optically transparent, inert, non-toxic It is the most widely used silicon-based organic polymer material due to its material properties such as non-flammability and non-flammability. The silica (Silicon dioxide) is an oily liquid; the silicon oil (Hydroxyl-terminated) is also a Oily liquid state; the chloroplatinic acid catalyst is matched with the terminal hydrocarbon-based silicone oil to perform catalytic action on the polydimethylsiloxane, the silicon dioxide and the terminal hydrocarbon-based silicone oil, etc. In the process of cross-linking and maturing of these components, the bridging of the hydrocarbon groups therein is interrupted, and then re-bridging, so that these components are cross-linked and matured into silicone polymers (polymerizedsiloxanes or polysiloxanes, commonly known as Silicone Rubber); The precious metal nanoparticle additive is also in oily liquid state, and contains triglycerides, gold nanoparticles, platinum nanoparticles, silver nanoparticles and dispersants (or emulsifiers); wherein, the triglycerides are used to make The additive can be dissolved in oily materials such as the polydimethylsiloxane, the silica and the hydrocarbon-terminated silicone oil, so as to be fully mixed with each other, and the chloroplatinic acid catalyst and the hydrocarbon-terminated silicone oil can be implemented Catalysis, so that the components such as the polydimethylsiloxane, the silicon dioxide and the terminal hydrocarbon-based silicone oil can be cross-linked and matured into the silicone polymer (polymerized siloxanes or polysiloxanesr).

In the noble metal nanoparticle additive of the foregoing embodiment of the present invention, the weight percentage of the triglyceride is 90%; these noble metal nanoparticles (ie, the gold nanoparticles, the platinum nanoparticles and the silver nanoparticles, etc. ) is uniformly dispersed in the aqueous solution, and its weight percentage is 10%; the dispersant (or emulsifier) is used to make these precious metal nanoparticles fully and uniformly dispersed in the triglyceride, so that the precious metal nanoparticles The particle additive can be uniformly dispersed in the oily materials such as the polydimethylsiloxane, the silicon dioxide and the terminal hydrocarbon-based silicone oil, and its weight percentage is also 10%.

In a preferred embodiment of the present invention, please refer to Fig. 1, the manufacturing procedure of this soft contact lens material and its lens comprises the following steps shown in Fig. 1:

(100) adding the noble metal nanoparticle additive and the chloroplatinic acid catalyst to the polydimethylsiloxane material;

(101) With a rolling mixing device comprising at least three rollers, perform at least three rolling mixing procedures for the mixed solution of the noble metal nanoparticle additive, the chloroplatinic acid catalyst and the polydimethylsiloxane and other components , so that the precious metal nanoparticle additive, the chloroplatinic acid catalyst and the polydimethylsiloxane can be fully and uniformly mixed to form the so-called "A agent" in the present invention;

(200) adding the terminal hydrocarbon-based silicone oil to the silica material;

(201) with a rolling mixing device comprising at least three rollers, perform at least three rolling mixing procedures on the mixed solution of the end hydrocarbon-based silicone oil and the silicon dioxide, so as to make the end hydrocarbon-based silicone oil and the dioxide Components such as silicon can be mixed sufficiently and uniformly to form the so-called "B agent" in the present invention;

(300) Referring to FIG. 2, the A and B agents are respectively filled into a first feeding cylinder 10 and a second feeding of a LIM (Liquid Injection Molding, LIM) silicone rubber molding machine 1 cylinder 11;

(301) Use a first pressurizing pump 20 and a second pressurizing pump 21 on the LIM silicone rubber molding machine to pressurize the first feeding cylinder 10 and the second feeding cylinder 11 respectively, so as to pressurize the first feeding cylinder 10 and the second feeding cylinder 11 respectively. The agent A and agent B filled therein can be respectively delivered to a dose distribution device 30, and the injection pressure applied to the dose distribution device 30 is regulated by an injection device 40 on the LIM silicone rubber molding machine 1 and speed, so that the doses A and B in the dose-dispensing device 30 can be simultaneously delivered to a mixing device 50 according to a set dose ratio (eg 1:1);

(302) After the agent A and agent B are fully and uniformly mixed and pressurized in the mixing device 50, the mixture of agent A and agent B will pass through a shut offnozzle 60 and be injected into ( or injection) into a contact lens forming mold 70, the closing nozzle 60 is connected with a closing mechanism (not shown in the figure), the closing mechanism can be used to regulate the ejection amount of the closing nozzle 60, and make the A The mixture of agent A and agent B will not leak from the closed nozzle 60. During the process of crosslinking and maturation of the mixture of agent A and agent B in the contact lens molding mold 70, the molding temperature of the contact lens molding mold 70 It is controlled between 110 and 130 degrees Celsius, and during the molding period, it is controlled between 20 and 60 seconds, so that the chloroplatinic acid catalyst in the mixture can be matched with the end hydrocarbon-based silicone oil. Oxane and the silicon dioxide and other components fully perform catalytic action, so that these components are cross-linked and matured into the silicon oxide polymer (polymerized siloxanes or polysiloxanes, commonly known as Silicone Rubber), and the invention is produced accordingly. Highly oxygen permeable, moisturizing and antibacterial contact lenses.

In the aforementioned preferred embodiment of the present invention, the core technical feature is that in the contact lens material, the weight percentage of the polydimethylsiloxane material is 60-80%; the weight percentage of the silica material is 60-80%; is 18-38%; the weight percentage of the end hydrocarbon-based silicone oil material and the chloroplatinic acid catalyst is 1-4%; and in the precious metal nanoparticle additive, the weight percentage of the silver nanoparticle is 1,000-5,000ppm, with Effectively increase the antibacterial ability and effect of the contact lens material; the weight percent of the gold nanoparticles is 30-200 ppm, so as to effectively increase the oxygen permeability and oxygen permeability effect of the contact lens material; and the weight percent of the platinum nanoparticles is 50 ppm ~30000ppm, to effectively increase the moisturizing ability and effect of the contact lens material.

It must be specifically stated that the above is only a preferred embodiment of the present invention, and the present invention is not limited to this when it is actually implemented, and the aforementioned process steps and conditions can be appropriately adjusted according to actual needs, For example, the noble metal nanoparticle additive is uniformly added and mixed into the polydimethylsiloxane material, or the noble metal nanoparticle additive is uniformly added and mixed into the silica material, and the mixed The material is referred to as the A agent in the present invention, and the polydimethylsiloxane material or the silica material is directly referred to as the B agent in the present invention, and the LIM shown in FIG. 2 is passed accordingly. The silicone rubber molding machine 1 and the aforementioned process steps shown in FIG. 1 can also in another preferred embodiment of the present invention produce the high oxygen permeability, moisturizing and antibacterial contact lens of the present invention, wherein, Please refer to FIG. 2 again, in another preferred embodiment of the present invention, the A agent and the B agent are respectively filled into the first feeding cylinder 10 and the first feeding cylinder 10 of the LIM silicone rubber molding machine 1. Two feeding cylinders 11, and the end hydrocarbon-based silicone oil and the chloroplatinic acid catalyst are filled into a third feeding cylinder 12 of the LIM silicone rubber molding machine 1; The first pressurizing pump 20 , the second pressurizing pump 21 and the third pressurizing pump 22 are respectively used for the first feeding cylinder 10 , the second feeding cylinder 11 and the third feeding cylinder 12 . Pressurizing, so that the A agent, the B agent and the C agent filled therein can be delivered to the dose-dispensing device 30 together, and the injection pressure applied to the dose-dispensing device 30 is regulated by the injection device 40 and speed, so that the A, B and C doses in the dose distribution device 30 can be simultaneously delivered to the mixing device 50 according to a set dose ratio; when the A, B and C doses are mixed in the After the device 50 is sufficiently and uniformly mixed and pressurized, the mixture of agent A, agent B and agent C will be injected into the contact lens forming mold 70 through the closed nozzle 60, so that the mixture is injected into the contact lens forming mold 70. The chloroplatinic acid catalyst can be matched with the terminal hydrocarbon-based silicone oil to fully perform catalytic action on the polydimethylsiloxane, the silica and the terminal hydrocarbon-based silicone oil, so that these materials are cross-linked and matured. The silicone polymer and the highly oxygen permeable, moisturizing and antibacterial contact lens of the present invention are not deviated from the technical concept of the present invention, and should be included in the protection scope of the following patent application of the present invention.

The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above-mentioned specific embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention. Within the spirit and principle of the present invention, any modifications, equivalent replacements, improvements, etc. made should be included within the protection scope of the present invention.

Claims (10)

1. A highly oxygen permeable, moisturizing and antibacterial contact lens material, comprising the following components: A polydimethylsiloxane, in the form of oily liquid, is a high molecular organosilicon compound; Silicon dioxide, in the form of an oily liquid; One end of hydrocarbon-based silicone oil, also in oily liquid state; A chloroplatinic acid catalyst is matched with the terminal hydrocarbon-based silicone oil to perform catalytic action on the polydimethylsiloxane and the silicon dioxide and other components, so that in the process of cross-linking and maturation of these components, the After the bridging of the hydrocarbon base is broken, the bridging is re-bridged so that these components are cross-linked and matured into a silicone polymer; and A precious metal nanoparticle additive, also in an oily liquid state, the precious metal nanoparticle additive comprises triglyceride, gold nanoparticles, platinum nanoparticles, silver nanoparticles and dispersants and other components; wherein, the triglyceride is used to make The additive can be dissolved in oily materials such as the polydimethylsiloxane, the silica and the hydrocarbon-terminated silicone oil, and can be fully mixed with each other, so that the chloroplatinic acid catalyst and the hydrocarbon-terminated silicone oil can interact with each other. These components perform catalysis, so that these components are cross-linked and matured into the silicone polymer, and the weight percent of the triglyceride is 90%; the precious metal nanoparticles are uniformly dispersed in the aqueous solution, and the weight percent is 10% ; The dispersing agent is used to make these precious metal nanoparticles uniformly dispersed in the oily materials such as the polydimethylsiloxane, the silicon dioxide and the terminal hydrocarbon-based silicone oil, and its weight percentage is 10%, and it is characterized in that , these components form the contact lens material according to the following weight percentages: wherein, the weight percentage of the polydimethylsiloxane material is 60-80%; the weight percentage of the silica material is 18-38%; The weight percentage of the hydrocarbon-based silicone oil material and the chloroplatinic acid catalyst is 1 to 4%; and in the precious metal nanoparticle additive, the weight percentage of the silver nanoparticle is 1,000 to 5,000 ppm, so as to effectively increase the antibacterial properties of the contact lens material. Capability and effect; the weight percentage of the gold nanoparticles is 30-200 ppm, so as to effectively increase the oxygen permeability and oxygen permeability effect of the contact lens material; and the weight percentage of the platinum nanoparticles is 50-300 ppm, so as to effectively increase the contact lens material. Moisturizing ability and effect of eyeglass materials. 2. The contact lens material of claim 1, wherein the noble metal nanoparticle additive is uniformly added and mixed in the polydimethylsiloxane material. 3. The contact lens material of claim 1, wherein the noble metal nanoparticle additive is uniformly added and mixed in the silica material. 4. The contact lens material as claimed in claim 1, 2 or 3, wherein, these materials use a rolling mixing device comprising at least three rollers to perform at least three rolling mixing procedures on the mixed solution of these components, so that These ingredients can be mixed thoroughly and uniformly into the contact lens material. 5. A highly oxygen-permeable, moisturizing and antibacterial contact lens material and a method for producing the same, comprising: adding a precious metal nanoparticle additive and a chloroplatinic acid catalyst to a polydimethylsiloxane material; With a rolling mixing device comprising at least three rollers, perform at least three rolling mixing procedures for the mixed solution of the noble metal nanoparticle additive, the chloroplatinic acid catalyst and the polydimethylsiloxane, so that the The noble metal nanoparticle additive, the chloroplatinic acid catalyst and the polydimethylsiloxane can be mixed sufficiently and uniformly to form the agent A of the present invention; adding one end of hydrocarbyl silicone oil to a silica material; A rolling mixing device containing at least three rollers is used to perform at least three rolling mixing procedures on the mixed material of the end hydrocarbon-based silicone oil and the silica, so that the end hydrocarbon-based silicone oil and the silica and other materials can fully And evenly mixed to form the so-called B agent of the present invention; The A and B agents are respectively filled into a first feeding cylinder and a second feeding cylinder of a LIM silicone rubber molding machine; Use a first pressurizing pump and a second pressurizing pump on the LIM silicone rubber molding machine to pressurize the first feeding cylinder and the second feeding cylinder respectively, so that the A Agent and Agent B can be delivered to a dose-dispensing device, respectively, and the injection pressure and speed applied to the dose-dispensing device are regulated by an injection device on the LIM silicone rubber molding machine, so that the Agents A and B can be simultaneously delivered to a mixing device according to a set dose ratio; and After the agent A and agent B are fully and uniformly mixed and pressurized in the mixing device, the mixture of agent A and agent B will be injected into a contact lens forming mold through a closed nozzle. During the cross-linking and maturation of the mixture of agent A and agent B in the contact lens molding mold, the temperature of the contact lens molding mold is controlled between 110 and 130 degrees Celsius, and the molding time is controlled at 20 to 60 degrees Celsius. seconds, so that the chloroplatinic acid catalyst in the mixture can be matched with the end hydrocarbon-based silicone oil, and the polydimethylsiloxane and the silicon dioxide and other materials can be fully catalyzed, so that the These materials are cross-linked and matured into a silicone polymer with high oxygen permeability, high moisture retention and high antibacterial properties of contact lenses; Its technical characteristics are: wherein, the weight percentage of the polydimethylsiloxane material is 60-80%; the weight percentage of the silica material is 18-38%; the end hydrocarbon-based silicone oil material and the chloroplatinic acid catalyst The weight percentage of the silver nanoparticles is 1-4%; and in the precious metal nanoparticle additive; the weight percentage of the silver nanoparticles is 1,000-5,000 ppm; the weight percentage of the gold nanoparticles is 30-200 ppm; the weight of the platinum nanoparticles The percentage is 50 to 300 ppm. 6 . The manufacturing method of claim 5 , wherein the agent A is the noble metal nanoparticle additive added to the polydimethylsiloxane material, and the noble metal nanoparticle is added to the polydimethylsiloxane material by the rolling mixing device. 7 . The mixed material of the additive and the polydimethylsiloxane material is obtained by performing at least three rolling mixing procedures, so that the noble metal nanoparticle additive and the polydimethylsiloxane material are sufficiently and uniformly mixed. 7. The manufacturing method of claim 6, wherein the B agent is the silica material. 8. The manufacturing method of claim 5, wherein the A agent is the noble metal nanoparticle additive added to the silica material, and the noble metal nanoparticle additive and the two are mixed by the rolling mixing device. The mixed material of the silicon oxide material is formed by performing at least three rolling mixing procedures, so that the noble metal nanoparticle additive and the silicon dioxide material are sufficiently and uniformly mixed. 9 . The manufacturing method of claim 6 , wherein the B agent is the polydimethylsiloxane material. 10 . 10. The manufacturing method of claim 7 or 9, further comprising a C agent, the C agent is composed of the end hydrocarbon-based silicone oil and the chloroplatinic acid catalyst, and through the rolling mixing device, the end hydrocarbon-based silicone oil is The mixed material with the chloroplatinic acid catalyst is formed by performing at least three rolling mixing procedures, so that the end hydrocarbon-based silicone oil and the chloroplatinic acid catalyst are sufficiently and uniformly mixed. The production method still includes the following steps: The C agent is filled into a third feeding cylinder of the LIM silicone rubber molding machine, and the third feeding cylinder is pressurized by a third pressurizing pump on the LIM silicone rubber molding machine to The C agent filled therein can be delivered to the dose-dispensing device together with the A and B agents, and the injection pressure and speed applied to the dose-dispensing device are regulated by the injection device, so that the dose-dispensing device is The agent A, agent B and agent C can be simultaneously delivered to the mixing device according to a set dose ratio; and After the agent A, agent B and agent C are fully and uniformly mixed and pressurized in the mixing device, the mixture of agent A, agent B and agent C will be injected into the contact lens through the closed nozzle In the sheet forming mold, the chloroplatinic acid catalyst in the mixture can be matched with the terminal hydrocarbon silicone oil, and the polydimethylsiloxane and the silicon dioxide and other materials can be fully catalyzed, so that these The material is cross-linked and matured into the silicone polymer to produce the high oxygen permeability, moisturizing and antibacterial contact lens.

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