Unlock instant, AI-driven research and patent intelligence for your innovation.

Antifogging agent

An anti-fogging agent and solvent technology, applied in the field of anti-fogging agent and anti-fogging agent that is resistant to pollution and water washing, can solve the problems of the anti-fogging effect not lasting too long, the hydrophilicity failure, and affecting the vision, etc., and achieve recovery. Hydrophilic and anti-fog effects, reduced interfacial tension, good biocompatibility

Inactive Publication Date: 2022-05-17
浙江跃维新材料科技有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fogging will not only reduce visibility and seriously affect the line of sight, but also may bring serious potential dangers in special cases, such as when driving a car, the car glass suddenly fogs up, and when performing surgery, the surgeon's goggles and glasses fog up, can have very serious consequences
Most of the anti-fog agents currently on the market are mainly composed of surfactants, and their short-term anti-fog effects are acceptable; however, the anti-fog effects of most products do not last too long, and most of the anti-fog The products are not resistant to water flushing, and will fail after prolonged contact with condensed water
Moreover, most of the anti-fog coatings are very wear-resistant, and the anti-fog effect will be greatly reduced if you accidentally touch them with your fingers.
[0003] For example, patent CN112251194A discloses a formula of anti-fogging agent based on carboxylated polyvinyl alcohol and surfactant. The main components of this formula are all easily soluble in water, so the water resistance is very poor, and it is easy to lose when it comes into contact with water, so it is not suitable for fog Serious conditions or conditions that may come into contact with water (such as swimming goggles, etc.)
[0004] Another example is the patent CN102153291A which discloses an anti-fog coating of mesoporous silica, which has good wear resistance and water resistance, but requires high temperature treatment (500-600°C), which is not conducive to large-scale application. Moreover, the intrinsic silica surface has poor antifouling effect, and its hydrophilicity is easily lost due to the adsorption of impurities and grease in the air, and the antifog effect cannot be restored by washing with water; therefore, the duration of the antifog effect is poor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Antifogging agent
  • Antifogging agent
  • Antifogging agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Disperse 5 parts of dopamine, 5 parts of polysulfobetaine methacrylate, and 80 parts of silica nanoparticles in 910 parts of water; adjust the pH value to 8.5; continue stirring at room temperature for 24 hours to complete the reaction and form a uniformly dispersed Hydrophilic black nanoparticle dispersion.

[0035] Dopamine undergoes oxidation and self-polymerization reactions in alkaline environments, such as figure 1 Shown, and attached to the surface of the object, forming a thin layer of hydrophilic coating. Due to the polysulfobetaine methacrylate shown in the following formula exists in the solution at the same time, while dopamine is oxidized, the synthesized polydopamine will simultaneously adsorb the surrounding polysulfobetaine methacrylate and co-deposit on the nanoparticles On the surface, a uniform and stable nanoparticle dispersion with hydrophilicity, anti-fouling and anti-microbial adhesion is formed.

[0036]

[0037] The nanoparticle dispersion ...

Embodiment 2

[0047] Disperse 2 parts of L-dopamine, 2 parts of poly-2-methacryloxyethyl phosphorylcholine, and 80 parts of silica nanoparticles in 916 parts of water; adjust the pH value to 9; continue stirring at room temperature for 12 hours to complete the reaction , forming a uniformly dispersed hydrophilic black nanoparticle dispersion. Add 2 parts of non-ionic fluorocarbon surfactant, 200 parts of ethanol, mix thoroughly, apply lightly to the inner surface of the swimming goggle, and let it dry. The obtained anti-fog coating has good water resistance and abrasion resistance, and after soaking in swimming pool water for 72 hours, it still has good hydrophilicity and anti-fog effect. When the surface of the coating is stained with oil and dust and gradually loses its hydrophilicity, you can drop a few drops of water on the lens, apply it gently back and forth with your fingers, and then rinse with water to remove the oil and dust without wiping off the anti-fog coating, thereby restor...

Embodiment 3

[0049] Disperse 0.5 parts of dopamine, 0.5 parts of polysulfobetaine methacrylate, 5 parts of zinc oxide nanoparticles, and 10 parts of nanocellulose in 989 parts of water; adjust the pH value to 8.5; continue stirring at room temperature for 8 hours to complete the reaction , forming a uniformly dispersed hydrophilic black nanoparticle dispersion, the color is lighter than that of Example 1 and Example 2. After the reaction was completed, 5 parts of alkyl glycoside surfactants and 100 parts of ethanol were added. Spray on bathroom mirrors, spread evenly with a polyester towel and allow to dry. The obtained anti-fog coating has good transparency and does not affect the line of sight. Apply once, the anti-fog time can last for more than 14 days.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an antifogging agent, which mainly comprises a nanoparticle dispersion liquid, and the raw materials of the nanoparticle dispersion liquid comprise a catechol derivative, a zwitterionic polymer and nanoparticles. According to the anti-fogging agent disclosed by the invention, the hydrophilic catechol derivative and the zwitterionic polymer are mainly adopted and are co-deposited on the surfaces of nano particles in an alkaline environment to form a stable nano particle dispersion liquid with a hydrophilic surface; and then a surfactant, a solvent and the like are matched to coat the surfaces of glass, resin and the like, so that the anti-fogging coating has excellent hydrophilicity and can play an anti-fogging role. The hydrophilic coating has good water resistance and friction resistance, and the antifogging effect is efficient and lasting. The hydrophilic coating can be widely applied to the anti-fog purpose of the surfaces of swimming goggles, glasses, surgical endoscopes, telescopes, automobile glass, bathroom mirrors, helmets, goggles and the like.

Description

technical field [0001] The invention relates to the technical field of lens antifogging, in particular to an antifogging agent, in particular to an antifogging agent resistant to dirt and water. Background technique [0002] Transparent materials such as glass and resin often encounter surface fogging due to changes in temperature and humidity during use. Fogging will not only reduce visibility and seriously affect the line of sight, but also may bring serious potential dangers in special cases, such as when driving a car, the car glass suddenly fogs up, and when performing surgery, the surgeon's goggles and glasses fog up, There could be very serious consequences. Most of the anti-fog agents currently on the market are mainly composed of surfactants, and their short-term anti-fog effects are acceptable; however, the anti-fog effects of most products do not last too long, and most of the anti-fog The products are not resistant to water flushing, and will fail after prolong...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09D179/04C09D133/14C09D143/02C09D101/02C09D7/61G02B1/18
CPCC09D179/04C09D133/14C09D143/02C09D101/02C09D7/61G02B1/18C08K2201/011C08K2003/2296C08L33/14C08K3/36C08L79/04C08L43/02C08K3/22
Inventor 李银勇潘玉凤
Owner 浙江跃维新材料科技有限公司