Aqueous applying liquid composition for optical polyester film

A polyester film and coating technology, which is applied in the field of optical polyester film water-based coating liquid composition, can solve the problems of good adhesion, poor adhesion of substrate PET polyester film, poor adhesion, etc.

Inactive Publication Date: 2008-03-05
NANYA PLASTICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, if the coating on the surface of polyester film is pure acrylic resin, it has good adhesion to the acrylic coating layer used in LCD materials, but in comparison, the adhesion to the substrate PET polyester film Then it is not good; similarly, if the coating layer on the surface of the polyester film is pure polyester resin, then the adhesiveness of the acrylic coating layer used for the LCD material is not good, but the polyester film of the substrate PET good adhesion

Method used

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  • Aqueous applying liquid composition for optical polyester film
  • Aqueous applying liquid composition for optical polyester film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] After fully drying the PET pellets containing alumina-filled particles with an average particle size of 2.0 μ (1b in Figure 1), they are fed to an extruder to be melted and extruded, and cooled and solidified by a cooling cylinder with a surface temperature of 25°C, thus obtaining unstretched The PET Sheet is stretched longitudinally at a draw ratio of 4 times after heating, and then coated on one side. The coating solution contains

[0049] 1.5wt% of polyester resin, 1.0wt% of melamine resin and 5.0wt% of acrylic resin are mixed as resin, and 0.15wt% of surfactant A, 0.1wt% of surfactant B, 0.05wt% of surfactant % silicon-containing compound and 2.2wt% high molecular weight polymer as the treatment agent, the particles to be treated are 1.2μ alumina particles A and 50nm silicon oxide particles B as filling particles, add 84.65wt% water for surface treatment Finally, mix and stir 0.05% catalyst, 5wt% isopropanol and 0.2wt% butyl cellulose to form a coating solution, whi...

Embodiment 2

[0051] Its formula consists of fully drying PET pellets containing silica-filled particles with an average particle size of 2.0μ (1b in Figure 1), feeding them to an extruder to melt and extrude them, and passing through a cooling cylinder with a surface temperature of 25°C to cool and solidify. The unstretched PET Sheet obtained in this way is longitudinally stretched at a draw ratio of 4 times after heating, and then single-sided coated. The coating solution contains

[0052] 1.0wt% of polyester resin, 0.7wt% of melamine resin and 4.2wt% of acrylic resin are mixed as resin, and 0.30wt% of surfactant A, 0.2wt% of surfactant B, 0.05wt% of surfactant % silicon-containing compound and 5.5wt% high molecular weight polymer as the treatment agent, the treated particles are 0.8μ silicon oxide particle A and 50nm silicon oxide particle B as filling particles, add 87.34wt% water for surface treatment After adding, 0.05% catalyst and 0.5wt% butyl cellulose were mixed and stirred evenly...

Embodiment 3

[0054] Its formula consists of fully drying the PET granules containing filler particles with an average particle size of 1.5μ, feeding them to the extruder for melting and extruding, and cooling and solidifying through a cooling cylinder with a surface temperature of 25°C, so as to obtain an unstretched PET Sheet. After heating, it is stretched longitudinally at a draw ratio of 4 times, and then double-sided coated. The coating solution contains

[0055] 5.25wt% of polyester resin, 1.5wt% of melamine resin and 3.0wt% of acrylic resin are mixed as resin, and another 0.50wt% of surfactant A, 0.1wt% of surfactant B and 1.0wt% % high molecular polymer as the treatment agent, the particles to be treated are 1.5μ silicon oxide particles A and 50nm silicon oxide particles B as filling particles, add 78.1wt% water for treatment, and finally add 0.05% catalyst, 10wt% of isopropanol and 0.2wt% of butyl cellulose were mixed and stirred evenly to form a coating solution, which was evenly...

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Abstract

The water soluble coating fluid for optical polyester film includes resin 2-40 wt%, modified stuffing fluid 0.05-30 wt% and additives 0.05-10 wt%. It forms the coating comprising component A of polyester resin 20-50 wt%, component B of melamine resin or modified melamine resin 10-40 wt% and component C of acrylate or methacrylate resin 20-80 wt%. The polyester film with coating of the water soluble coating fluid has high transparency, excellent adhesion property, high lubricating property, etc and is suitable for optical use.

Description

technical field [0001] The present invention relates to a coating formulation that can be applied to polyester film (substrate), and the polyester film (substrate) can be coated with high transparency, low haze, and excellent adhesion after being coated with the formulation. It is suitable for polyester films for optical purposes such as diffusion films for LCD (or CRT), brightness enhancement films, anti-reflection films, and protective films. Background technique [0002] In recent years, with the continuous improvement and breakthrough of science and technology, 3C products have been widely used in people's daily life, such as portable notebook computers, LCD TVs, etc., which in turn drives the market demand for liquid crystal display panels and related optical materials. Biaxially stretched polyester film is widely used in various optical films because of its high transparency, chemical resistance and dimensional stability. This kind of optical polyester film needs to ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D167/00C08J7/04B05D7/04B29C55/12G02B1/04
Inventor 谢嵩岳冯殿润黄英德林昭贤
Owner NANYA PLASTICS CORP
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