Low-temperature-resistant lens antifogging liquid

Abstract

The invention discloses a low-temperature-resistant lens antifogging liquid, and belongs to the technical field of antifogging liquids, and the antifogging liquid is mainly composed of C6 carbon chain fluorine MS-7100, fatty alcohol modified polyethylene glycol T, absolute ethyl alcohol, hydroxypropyl methyl cellulose HPMC-2910E100, polyvinylpyrrolidone PVP-K30, dimethyl sulfoxide, medical glycerin, and propylene glycol. The preparation process comprises the following steps: pre-preparing a film-forming agent solution, pre-dissolving the surfactant, mixing, blending and the like. The antifogging liquid can tolerate the low temperature of 25 DEG C below zero, has a good antifogging effect in low-temperature and cold-hot conversion environments, is high in safety due to the fact that medical raw materials and auxiliary materials are mostly adopted in the formula, and can be used for antifogging of lenses of automobile glass, glasses, rider helmets, goggles, swimming goggles and the like.

Description

Technical Field

[0001] This invention relates to the field of anti-fog liquid technology, specifically to a low-temperature resistant anti-fog liquid for lenses, which can be widely used to prevent fogging of automotive glass, eyeglasses, riding helmet goggles, swimming goggles, etc., in changing seasons or environments. Background Technology

[0002] Currently, various anti-fog products for glass lenses are available on online shopping platforms. However, actual purchases and performance verification have revealed that these existing anti-fog products generally suffer from poor anti-fog effectiveness. Their anti-fog time is short, and they are not resistant to low temperatures. During seasonal transitions and in cold weather, the anti-fog performance of these products on various glass lenses is unsatisfactory.

[0003] To address the aforementioned issues, this application, based on the formula of its self-developed patented product "Medical Endoscope Anti-fog Liquid," underwent extensive improvements, adjustments, and testing. Ultimately, a product capable of withstanding temperatures as low as -25 degrees Celsius (or even lower) was successfully developed to meet the need for lens anti-fogging in low-temperature environments. Summary of the Invention

[0004] The purpose of this invention is to provide a low-temperature resistant anti-fogging liquid for lenses. This anti-fogging liquid has excellent anti-fogging effect, especially in low-temperature environments where it can maintain good anti-fogging performance. It can be widely used for anti-fogging of various lenses and is safe and reliable to use.

[0005] The low-temperature resistant lens anti-fog liquid of the present invention is mainly composed of the following components: C6 carbon chain fluorine (surfactant) MS-7100: It has the function of reducing surface tension, which helps the anti-fog liquid to spread evenly on the lens surface and improves the anti-fog effect.

[0006] Fatty alcohol modified polyethylene glycol (cosolvent) T: can promote the dissolution and mixing of various components, so that the antifogging liquid forms a stable system.

[0007] Anhydrous ethanol (solvent): As a solvent, it dissolves other components and has a certain degree of volatility, which facilitates the rapid drying and film formation of the anti-fogging liquid.

[0008] Hydroxypropyl methylcellulose (film-forming agent) HPMC-2910E100: works in conjunction with polyvinylpyrrolidone to form a transparent biofilm on the lens surface, thus preventing fogging.

[0009] Polyvinylpyrrolidone (film-forming agent) PVP-K30: Synergistically forms films with hydroxypropyl methylcellulose, enhancing film stability and anti-fogging properties.

[0010] Dimethyl sulfoxide (low-temperature resistant component): can improve the performance of antifogging liquid in low-temperature environments, so that it can still maintain good fluidity and antifogging effect at low temperatures.

[0011] Medical glycerin (lubricant, stabilizer): It acts as a lubricant and helps stabilize the anti-fogging liquid system, extending its shelf life.

[0012] Propylene glycol (low-temperature resistant component): further enhances the low-temperature resistance of the anti-fogging liquid, preventing solidification or performance degradation at low temperatures.

[0013] 2. Manufacturing Process Pre-prepared film-forming agent solution: First, hydroxypropyl methylcellulose and polyvinylpyrrolidone are formulated to a concentration of 2%.

[0014] First, add one-third of the total volume of 60°C distilled water and stir at 300-500 rpm for 10 minutes to fully dissolve the ingredients into a gel. Maintain the temperature at 55-65°C during this step to ensure the ingredients begin the dissolving reaction at a suitable temperature.

[0015] The second step is to add the remaining two-thirds of the cold water, adjust the stirring speed to 200-300 rpm, and continue stirring for 20 minutes until a transparent viscous liquid is formed. At this time, the solution temperature will gradually decrease to room temperature and then be ready for use.

[0016] Pre-dissolved surfactant: Add the raw materials to a container according to the ratio of C6 fluorocarbon: fatty alcohol modified polyethylene glycol T: anhydrous ethanol = 1.5:1:7.5, and stir at a stirring speed of 400-600 rpm for 15-20 minutes at room temperature (20-25℃) to ensure thorough mixing and pre-dissolution.

[0017] Mix and blend: In the reactor, the pre-dissolved surfactant is added first, and the reactor temperature is controlled at 30-35℃. The mixture is stirred at a stirring speed of 300-400 rpm for 5 minutes.

[0018] Then slowly add the pre-prepared film-forming agent solution while increasing the stirring speed to 500-600 rpm and stirring continuously for 15 minutes to ensure that the two are fully mixed.

[0019] Next, dimethyl sulfoxide, medical glycerin, propylene glycol and other ingredients are added in sequence. The temperature is raised to 35-40℃ and stirred at a stirring speed of 400-500 rpm for 30 minutes to allow the ingredients to react fully and form a stable, transparent biofilm that can adhere to the lens surface.

[0020] In summary, the technical effects and advantages of this invention are as follows: Excellent low-temperature resistance: The anti-fogging liquid of this invention can withstand temperatures as low as -25 degrees Celsius (or even lower). It can still maintain a good anti-fogging effect in cold weather and environments with temperature changes, effectively solving the problem of existing anti-fogging products not being resistant to low temperatures.

[0021] Excellent anti-fog effect: Under specific conditions, a stable transparent biofilm is formed by surfactants and medical excipients, which can be evenly attached to the lens surface, preventing water vapor from condensing into fog on the lens and prolonging the anti-fog time.

[0022] High safety: Most of the formulas use medical-grade raw materials and excipients, which are extremely safe for human body and environment. They can be safely used in eyeglasses, helmet goggles, swimming goggles and other products that come into close contact with the human body. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a flowchart illustrating the experimental data of the low-temperature resistant lens anti-fog liquid in the embodiments of this application. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] It should also be noted that all standard parts used in this application are commercially available, and can be custom-made according to the description and drawings. Unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances, and unless explicitly limited, machinery, parts, and equipment can all adopt conventional models in the prior art.

[0028] In this document, the term "comprising" is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] Example

[0030] This invention provides a low-temperature resistant anti-fogging liquid for lenses, belonging to the field of anti-fogging liquid technology. The anti-fogging liquid mainly consists of C6 carbon chain fluorine (surfactant) MS-7100, fatty alcohol modified polyethylene glycol (cosolvent) T, anhydrous ethanol, hydroxypropyl methylcellulose (film-forming agent) HPMC-2910E100, polyvinylpyrrolidone (film-forming agent) PVP-K30, dimethyl sulfoxide (low-temperature resistant component), medical-grade glycerin (lubricant and stabilizer), and propylene glycol (low-temperature resistant component). Its manufacturing process includes pre-mixing the film-forming agent solution, pre-dissolving the surfactant, and mixing and blending steps. This anti-fogging liquid can withstand temperatures as low as -25 degrees Celsius and exhibits good anti-fogging performance in low-temperature and temperature-changing environments. Furthermore, the formula primarily uses medical-grade raw materials and excipients, ensuring high safety. It can be used for anti-fogging of lenses such as automotive glass, eyeglasses, rider helmet goggles, and swimming goggles.

[0031] The specific implementation is as follows: (a) Raw material preparation Prepare the following raw materials according to the formula requirements: C6 carbon chain fluorine (surfactant) MS-7100, fatty alcohol modified polyethylene glycol (cosolvent) T, anhydrous ethanol, hydroxypropyl methylcellulose (film-forming agent) HPMC-2910E100, polyvinylpyrrolidone (film-forming agent) PVP-K30, dimethyl sulfoxide (low temperature resistant component), medical glycerin (lubricant and stabilizer), propylene glycol (low temperature resistant component).

[0032] (II) Production Process Pre-prepared film-forming agent solution Accurately weigh appropriate amounts of hydroxypropyl methylcellulose and polyvinylpyrrolidone. To prepare a 2% concentration solution, first add one-third of the total volume of 60°C distilled water to the container. Turn on the stirrer and adjust the stirring speed to 300-500 rpm. Stir for 10 minutes to fully dissolve the hydroxypropyl methylcellulose and polyvinylpyrrolidone, forming a gel-like substance. During this process, carefully control the solution temperature at 55-65°C.

[0033] Next, add the remaining two-thirds of the cold water, adjust the stirring speed to 200-300 rpm, and continue stirring for 20 minutes until the solution becomes a transparent viscous liquid. Set it aside for later use.

[0034] Pre-dissolved surfactant Add the corresponding raw materials to another container according to the ratio of C6 fluorocarbon: fatty alcohol modified polyethylene glycol T: anhydrous ethanol = 1.5:1:7.5. At room temperature (20-25℃), turn on the stirring equipment and adjust the stirring speed to 400-600 rpm, and stir for 15-20 minutes to fully mix and pre-dissolve them.

[0035] Mix and blend In a specific reactor, the temperature and stirring speed are carefully controlled. First, add the pre-dissolved surfactant to the reactor, set the temperature to 30-35℃, and stir at a stirring speed of 300-400 rpm for 5 minutes.

[0036] Then, slowly add the pre-prepared film-forming agent solution through the pipe, while increasing the stirring speed to 500-600 rpm and stirring continuously for 15 minutes.

[0037] Next, dimethyl sulfoxide, medical glycerin, propylene glycol and other ingredients are added in sequence. The temperature of the reaction vessel is raised to 35-40℃ and stirred at a stirring speed of 400-500 rpm for 30 minutes until a stable, transparent biofilm that can adhere to the lens surface is formed.

[0038] (III) Instructions for Use Apply or spray this low-temperature resistant lens anti-fog liquid onto glass surfaces that require anti-fog protection (such as car windows, eyeglasses, rider helmet goggles, swimming goggles, etc.). It will take effect in a few seconds or after air drying.

[0039] (iv) Performance Testing The prepared anti-fogging liquid was applied to different lenses, and its anti-fogging effect was tested in a low-temperature environment of -25 degrees Celsius and a simulated environment of temperature change. The low-temperature resistance and anti-fogging effect of the anti-fogging liquid were verified by observing the water vapor condensation on the lens surface and the duration of anti-fogging. Simultaneously, relevant safety tests were conducted on the anti-fogging liquid to ensure that it meets the safety standards for medical raw materials and excipients.

[0040] The specific experiment is as follows: The experiment was conducted using tools such as the refrigerator compartment (5 degrees Celsius), the freezer compartment (-25 degrees Celsius) of a household refrigerator, a stopwatch, a glass slide, and cotton swabs. The data in Table 1 were obtained.

[0041] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. Low-temperature resistant anti-fog liquid for lenses, characterized in that: It is mainly composed of the following components: C6 carbon chain fluorine MS-7100, fatty alcohol modified polyethylene glycol T, anhydrous ethanol, hydroxypropyl methylcellulose HPMC-2910E100, polyvinylpyrrolidone PVP-K30, dimethyl sulfoxide, medical grade glycerin and propylene glycol.

2. The low-temperature resistant anti-fog liquid for lenses according to claim 1, characterized in that, The manufacturing process of the anti-fogging liquid includes the following steps: Pre-prepared film-forming agent solution: Prepare a 2% concentration of hydroxypropyl methylcellulose and polyvinylpyrrolidone. First, add one-third of the total volume of 60°C distilled water and stir at 300-500 rpm for 10 minutes to fully dissolve the raw materials into a gel. The temperature in this step should be controlled at 55-65°C. Second, add the remaining two-thirds of the volume of cold water, adjust the stirring speed to 200-300 rpm, and continue stirring for 20 minutes until a transparent viscous liquid is formed. Gradually lower the solution temperature to room temperature. Pre-dissolved surfactant: Add the raw materials to a container according to the ratio of C6 fluorocarbon: fatty alcohol modified polyethylene glycol T: anhydrous ethanol = 1.5:1:7.5, and stir at a stirring speed of 400-600 rpm for 15-20 minutes at room temperature (20-25℃) to ensure thorough mixing and pre-dissolution; Mixing and Preparation: In the reaction vessel, first add the pre-dissolved surfactant, control the temperature of the reaction vessel at 30-35℃, and stir at a stirring speed of 300-400 rpm for 5 minutes; then slowly add the pre-prepared film-forming agent solution, while increasing the stirring speed to 500-600 rpm and stirring continuously for 15 minutes; then add other components such as dimethyl sulfoxide, medical glycerin, and propylene glycol in sequence, raise the temperature to 35-40℃, and stir at a stirring speed of 400-500 rpm for 30 minutes to form a stable, transparent biofilm that can adhere to the lens surface.

3. The low-temperature resistant anti-fog liquid for lenses according to claim 1, characterized in that, The total mass percentage of dimethyl sulfoxide and propylene glycol in the antifogging liquid is 10% - 20%, and the mass ratio of the two is 1:1 - 1:2, in order to achieve low-temperature resistance.

4. The low-temperature resistant anti-fog liquid for lenses according to claim 1, characterized in that, The C6 carbon chain fluorine MS-7100 accounts for 5%-10% of the mass of the antifog liquid, and the fatty alcohol modified polyethylene glycol T accounts for 3%-7% of the mass of the antifog liquid. The synergistic effect of the two makes the contact angle of the antifog liquid on the lens surface less than 10°.

5. The low-temperature resistant anti-fog liquid for lenses according to claim 1, characterized in that, The medical glycerin accounts for 2%-5% of the mass of the antifogging liquid. It is combined with film-forming agents hydroxypropyl methylcellulose and polyvinylpyrrolidone to make the resulting transparent biofilm have an elongation at break greater than 150%.

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