Optical polyester film

An optical polyester film and film technology, applied in optical components, chemical instruments and methods, applications, etc., can solve the problems of easy-adhesive layer stripes, low film surface, bubble point, etc., to improve bonding fastness and Adhesion, simple and easy operation, the effect of improving hardness and scratch resistance

Active Publication Date: 2017-05-17
HEFEI LUCKY SCI & TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When coating the polyester surface, the process is cumbersome, and a series of coating defects such as streaks, bubble points, and scratches are prone to appear when coating the easy-adhesive layer
Furthermore, in the past polyester film, the surface hardness of the film is low, and it is easy to

Method used

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  • Optical polyester film
  • Optical polyester film
  • Optical polyester film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Synthesis of modified polyester:

[0042] 1000 moles of PTA terephthalic acid, 1000 moles of ethylene glycol, 300 moles of 4.4-dihydroxydiphenylsulfone, 50 moles of 4.4'-dihydroxybenzophenone, 50 grams of ethylene glycol antimony, 17.5 grams After the trimethyl phosphate is mixed and stirred evenly, it is added to the esterification kettle, and the air in the reaction kettle is completely replaced with nitrogen, then the temperature is raised to 235°C, the pressure is 250KPa, and the esterification begins. The esterification time is about 2.5 hours After the esterification is completed, the temperature is raised to 265°C, a vacuum is established, the pressure is less than 40Pa, the polycondensation time is about 2 hours, and the intrinsic viscosity of the slice is 0.665dl / g.

[0043]Pure PET polyester chips were evenly mixed with polyester masterbatch chips with an average particle size of 2.00 μm, wherein the content of 2.00 μm silicon dioxide in the total polyester ch...

Embodiment 2～12

[0047] With the preparation method similar to Example 1, according to the composition of A and C polyester components in Table 1, the composition, particle size and content of additives, and the composition of B layer polyester components and additives in Table 2, different thicknesses were prepared. Optical Mylar.

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Abstract

The invention discloses an optical polyester film. The optical polyester film adopts a single-layer A, double-layer A/B and three-layer A/B/A or A/B/C coextruded biaxially oriented polyester film, wherein the layer A or the layer A and the layer C contain polyester modified by 4.4'-dihydroxy diphenyl sulfone or 4.4'-dihydroxy diphenyl ketone; the thickenss of the optical polyester film is 12 to 350 microns. The surface performance of the polyester film is modified, so the adhesion fastness and the adhesive force with a functional layer are improved, and the hardness and the scratching resistance of the surface of the polyester film are improved. The optical polyester film can be widely applied to deep processing of a diffusion sheet, a prismatic lens, a protective film, in-film decoration, a window film and a photovoltaic material in a backlight module.

Description

[0001] Technical field: [0002] The invention discloses a layered product composed of synthetic resin, in particular a layered product composed of polyester. [0003] Background technique: [0004] Due to its good mechanical properties, electrical insulation properties, excellent optical properties and flexibility, polyester film is widely used as a support in the electrical insulation industry, flat panel display industry, photovoltaic material industry, and in-film injection molding, hard protection, etc. However, due to the low surface tension of the polyester film, when it is processed into a series of functional films such as diffusion sheets and prism sheets, the surface of the polyester film must be chemically treated, that is, a layer of polyester film is coated on the surface of the polyester film. Easy bonding layer to increase the surface tension of the polyester surface, improve the bonding fastness and adhesion with the functional layer, otherwise, the functional ...

Claims

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Application Information

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IPC IPC(8): B32B27/36B32B27/06B32B27/18C08G63/688C08L67/02
CPCB32B27/08B32B27/18B32B27/36B32B2250/02B32B2250/03B32B2250/244B32B2250/40B32B2307/536B32B2307/584B32B2551/00C08G63/6886C08J5/18C08J2367/02C08K2201/003C08K2201/014C08L67/02C08L2205/02C08L2205/025C08L2205/03C08L67/00C08K3/36
Inventor 高青王旭亮周通鲍时萍程龙宝王钦何晶晶
Owner HEFEI LUCKY SCI & TECH IND
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