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Low-rainbow-pattern polyester optical film coating liquid and preparation method thereof

A technology of rainbow pattern and optical film, which is applied in polyester coatings, chemical instruments and methods, polyurea/polyurethane coatings, etc. The effect of rainbow pattern, strong adhesion and high light transmittance

Active Publication Date: 2020-11-17
江苏三房巷薄膜股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the polyester optical film is used to manufacture ITO film, IMD film, protective film and other films that require hardening processing, due to the difference in refractive index between the PET substrate and the hardened coating layer, under the influence of light interference, rainbow patterns will occur. , affect the light transmittance of the film and the visual observation effect

Method used

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  • Low-rainbow-pattern polyester optical film coating liquid and preparation method thereof
  • Low-rainbow-pattern polyester optical film coating liquid and preparation method thereof
  • Low-rainbow-pattern polyester optical film coating liquid and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] According to mass percentage, take 10% water-based polyurethane, 30% water-based polyester, 0.4% melamine resin, 0.4% absolute ethanol, 0.1% polyether modified polysiloxane, 0.2% organic fluorocarbon wetting agent, 0.4% %nanoparticles, 58.5% deionized water, standby;

[0044]Take the wetting agent and add absolute ethanol to dilute, then slowly add to deionized water, and stir evenly, wherein the amount of deionized water is 50% of the total water amount required by the formula to prepare solution A; take water-based polyurethane and water-based polyester respectively Slowly add to solution A in a stirring state, keep stirring to make solution B; take melamine resin and add deionized water to dilute, slowly add to solution B, keep stirring to make solution C; take nanoparticles to make aqueous dispersion solution, the content of silicon dioxide in the solution is 40%, add deionized water to dilute, stir evenly, slowly add to solution C in a stirring state, then add deio...

Embodiment 2

[0047] According to mass percentage, take 20% water-based polyurethane, 20% water-based polyester, 0.5% melamine resin, 0.4% absolute ethanol, 0.1% polyether modified polysiloxane, 0.2% organic fluorocarbon wetting agent, 0.5% %nanoparticles, 58.3% deionized water, standby;

[0048] Take the wetting agent and add absolute ethanol to dilute, then slowly add to deionized water, and stir evenly, wherein the amount of deionized water is 65% of the total water amount required by the formula to prepare solution A; take water-based polyurethane and water-based polyester respectively Slowly add to solution A in a stirring state, keep stirring to make solution B; take melamine resin and add deionized water to dilute, slowly add to solution B, keep stirring to make solution C; take nanoparticles to make aqueous dispersion solution, the content of silicon dioxide in the solution is 40%, add deionized water to dilute, stir evenly, slowly add to solution C in a stirring state, then add dei...

Embodiment 3

[0051] According to mass percentage, take 30% water-based polyurethane, 10% water-based polyester, 0.5% melamine resin, 0.5% absolute ethanol, 0.2% polyether modified polysiloxane, 0.2% organic fluorocarbon wetting agent, 0.5% %nanoparticles, 58.1% deionized water, standby;

[0052] Take the wetting agent and add absolute ethanol to dilute, then slowly add to deionized water, and stir evenly, wherein the amount of deionized water is 80% of the total water amount required by the formula to prepare solution A; take water-based polyurethane and water-based polyester respectively Slowly add to solution A in a stirring state, keep stirring to make solution B; take melamine resin and add deionized water to dilute, slowly add to solution B, keep stirring to make solution C; take nanoparticles to make aqueous dispersion solution, the content of silicon dioxide in the solution is 40%, add deionized water to dilute, stir evenly, slowly add to solution C in a stirring state, then add dei...

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Abstract

The invention discloses a low-rainbow-pattern polyester optical film coating liquid and a preparation method thereof. The low-rainbow-pattern polyester optical film coating liquid comprises the following components in percentage by weight: 10-50% of waterborne polyurethane, 10-50% of waterborne polyester, 0.1-1% of melamine resin, 0.5-1.5% of an organic solvent, 0.05-0.5% of a wetting agent, 0.1-1% of nanoparticles, 0.01-0.1% of a pH value regulator and the balance of deionized water. According to the invention, the coating liquid is prepared by setting the components and proportions thereof,the preparation process and parameters, and after the polyester film is subjected to online prime coating treatment by the coating liquid, the refractive index difference between the PET base materialand the hardened coating can be reduced, the rainbow pattern phenomenon of the optical film can be reduced, and the adhesive force with hardened layer glue can be enhanced; and the film has the characteristics of low haze, high light transmittance, light rainbow lines, good smoothness and strong adhesion to an optical functional coating, is suitable for manufacturing ITO films, IMD films, protective films and other films needing hardening processing, and is suitable for wide popularization and application.

Description

technical field [0001] The invention relates to the field of coating liquid for bottom coating of hardened film, in particular to a low iridescent polyester optical film coating liquid and a preparation method thereof. Background technique [0002] Polyester film has superior physical, mechanical and optical properties, and is widely used in liquid crystal display, in-mold decoration, and optical protection. When the polyester optical film is used to manufacture ITO film, IMD film, protective film and other films that require hardening processing, due to the difference in refractive index between the PET substrate and the hardened coating layer, under the influence of light interference, rainbow patterns will occur. , affecting the light transmittance of the film and the visual observation effect. Therefore, we propose a low iridescent polyester optical film coating solution and a preparation method thereof. Contents of the invention [0003] The object of the present in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/08C09D167/02C09D7/65C09D7/61C09D7/62C08J7/04C08J7/043C08G18/66C08G18/48C08G18/58C08G18/32B32B27/06B32B27/36B32B33/00C08L67/02
CPCB32B27/08B32B27/36B32B33/00B32B2250/244B32B2255/10B32B2255/26B32B2307/40C08G18/3855C08G18/3876C08G18/4045C08G18/48C08G18/585C08G18/6666C08J2367/00C08J2367/02C08J2475/08C08K2003/2241C08K2201/011C08L2201/10C08L2205/035C09D167/02C09D175/08C09D7/61C09D7/62C09D7/65C08J7/0427C08J7/043C08L67/02C08L61/28C08K3/36C08K9/04C08K3/22C08L75/08
Inventor 潘世新吕军锋张志宏卞伟冬倪佳晨
Owner 江苏三房巷薄膜股份有限公司
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