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A water-based hydrophobic optical coating and a laser holographic anti-counterfeiting hot stamping film made of the coating

An optical coating and laser holography technology, applied in the field of optical coatings, can solve the problems of solvent volatilization, low glass transition temperature, high brittleness, etc., to achieve enhanced water resistance and anti-fouling performance, large specific surface area, and improved wear resistance Effect

Active Publication Date: 2018-06-26
WUHAN HUAGONG IMAGE TECH & DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The commonly used information recording layer material is a traditional solvent-based thermoplastic polyacrylic resin. Due to its high molecular chain rigidity, it is brittle and has a low glass transition temperature of only 102 ° C. It has poor heat resistance and resistance. Abrasiveness greatly limits its application and development
Although scholars and scientific researchers at home and abroad have also made many modifications to address the above defects, for example, introducing various inorganic nanoparticles into the thermoplastic polyacrylic resin system by blending or polymerizing methods, and also using organic silicon modification, polyurethane and other methods Modified polyacrylic resin, but the effect is not satisfactory
In addition, the above-mentioned traditional solvent-based thermoplastic polyacrylic resin is used as the information recording layer material. Not only will there be a large amount of solvent volatilization during the coating production and drying process, causing environmental pollution, but also the residual organic solvent will be released during the use of the product. Released into the air, harmful to the health of consumers

Method used

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  • A water-based hydrophobic optical coating and a laser holographic anti-counterfeiting hot stamping film made of the coating
  • A water-based hydrophobic optical coating and a laser holographic anti-counterfeiting hot stamping film made of the coating
  • A water-based hydrophobic optical coating and a laser holographic anti-counterfeiting hot stamping film made of the coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Preparation of polyacrylate-organosiloxane graft copolymer emulsion A:

[0038]In a four-necked flask with a condenser, a dropping device, an electric stirrer, and a thermometer, add 52.5g of deionized water and 5.5g of silicon carbide with a particle diameter of 10nm, and stir for 60 minutes at a speed of 6000 revolutions per minute, until Uniformly disperse to obtain a microemulsion; add 100 g of deionized water to the above-mentioned flask, then add 26.5 g of methyl methacrylate, 22.5 g of amino acrylate, and dimethacrylic acid dropwise to the beaker under high-speed stirring. 24.8g ethylene glycol ester, 20g butyl methacrylate, 8.5g HS-G217 vinyl silicone oil, 0.2g sodium bicarbonate, 0.8g sodium dodecylbenzenesulfonate, 2.5g polyoxyethylene nonylphenol ether, Then heat and stir, condense and reflux, and heat up to 75 ° C to form a stable microemulsion; 10 g of potassium persulfate aqueous solution with a mass fraction of 10% is evenly added dropwise to the abov...

Embodiment 2

[0044] (1) Preparation of polyacrylate-organosiloxane graft copolymer emulsion A:

[0045] Add 50g of deionized water and 6g of silicon carbide with a particle size of 12nm into a four-necked flask equipped with a condenser, dropping device, electric stirrer, and thermometer, and stir for 30 minutes at a speed of 6,000 rpm until uniformly dispersed. , to obtain a microemulsion; add deionized water 100g in the above-mentioned flask, then add dropwise methyl methacrylate 28.5g, amino acrylate 25g, ethylene glycol dimethacrylate in the beaker under the condition of high-speed stirring 20g ester, 22.5g butyl methacrylate, 8g HS-G217 vinyl silicone oil, 0.4g sodium bicarbonate, 0.5g sodium dodecylbenzenesulfonate, 2g polyoxyethylene nonylphenol ether, then heated and stirred, condensed Reflux and heat up to 80°C until a stable microemulsion is formed; 12g of potassium persulfate aqueous solution with a mass fraction of 10% is evenly added dropwise to the above microemulsion for 3 h...

Embodiment 3

[0051] (1) Preparation of polyacrylate-organosiloxane graft copolymer emulsion A:

[0052] Add 60g of deionized water and 5g of silicon carbide with a particle size of 10nm into a four-necked flask equipped with a condenser, dropping device, electric stirring, and thermometer, and stir for 60 minutes at a speed of 6000 rpm until uniformly dispersed , to obtain a microemulsion; add deionized water 100g in the above-mentioned flask, then add dropwise methyl methacrylate 25g, amino acrylate 20g, ethylene glycol dimethacrylate in the beaker under the condition of high-speed stirring 30g, 25g butyl methacrylate, 10g vinyl triethoxy silicone oil, 0.5g sodium bicarbonate, 1g sodium dodecylbenzenesulfonate, 3g polyoxyethylene nonylphenol ether, then heated and stirred, condensed and refluxed, Raise the temperature to 80°C until a stable microemulsion is formed; 11.5g of an aqueous solution of potassium persulfate with a mass fraction of 10% is evenly added dropwise to the above-mentio...

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Abstract

The invention relates to a water-based hydrophobic optical coating. The optical coating is composed of a polyacrylate-organosiloxane graft copolymer emulsion A and a functional filler B, wherein the functional filler B includes nano-zinc oxide, nano-titanium dioxide, and hollow glass microspheres; the acrylate-organosiloxane graft copolymer emulsion A is prepared by graft-copolymerizing organosiloxane monomers with unsaturated bonds and acrylate monomers made. The optical coating prepared by the method of the present invention has good wear resistance, heat resistance, and anti-aging. After the optical coating of the present invention is used as a holographic anti-counterfeiting information recording material to dry and form a film, the siloxane is hydrolyzed and polycondensed, and the siloxane is formed between polymer molecules. A strong cross-linked hydrophobic group (Si-O-Si-) structure is formed between the polymer and the substrate, which enhances the water resistance and anti-sticking performance of the prepared holographic anti-counterfeiting hot stamping film.

Description

technical field [0001] The invention belongs to the technical field of optical coatings, and in particular relates to a laser holographic anti-counterfeiting information recording material. More specifically, the invention relates to a water-based hydrophobic optical coating and a laser holographic anti-counterfeiting hot stamping film made of the coating. Background technique [0002] Since the anti-counterfeiting products and packaging made by laser holographic technology have special visual effects, strong anti-counterfeiting, colorful colors, and exquisite appearance, they have been widely valued and used in today's situation where counterfeit and shoddy goods are flooded. Laser holographic anti-counterfeiting hot stamping material is currently one of the most widely used products with relatively low cost and the most mature preparation technology produced by laser holographic technology. [0003] Laser holographic anti-counterfeiting hot stamping materials currently gen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D151/08C09D7/61C09D7/62C08F283/12B41M5/385B41M5/44
CPCC09D7/61C09D7/62C09D151/08C08F283/124C08K3/00C08K3/22C08K3/34C08K7/28C08K9/06C09D5/18B41M5/385B41M5/44C08K2201/011C08K2003/2296C08K2003/2241C08F222/145C08F220/1804
Inventor 杨兴国鲁琴杨志方王雪晴
Owner WUHAN HUAGONG IMAGE TECH & DEV
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