Laminated polyester film

A technology of polyester film and polythiophene, which is applied in the direction of film/sheet adhesive, layered products, synthetic resin layered products, etc. It can solve the problems of reduced visual recognition and increased film haze, and achieves industrial High value, good antistatic effect

Active Publication Date: 2019-05-21
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of using a polyester film, there is a problem that after heat treatment, low molecular weight substances in the polyester film constituting the surface protection film, that is, oligomers (mainly ester cyclic trimers) are precipitated. Or the haze of the film caused by crystallization increases, and the visibility decreases

Method used

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  • Laminated polyester film
  • Laminated polyester film
  • Laminated polyester film

Examples

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manufacture example

[0087] As a specific production example of a polyurethane resin, the method using the reaction of a hydroxyl group and an isocyanate is mentioned, for example. As the hydroxyl group used as a raw material, a polyol is suitably used, and examples thereof include polyether polyols, polyester polyols, polycarbonate polyols, polyolefin polyols, and acrylic polyols. These compounds may be used alone or in combination.

[0088] Examples of polyether polyols include polyethylene glycol, polypropylene glycol, polyethylene propylene glycol, polytetramethylene ether glycol, polyhexamethylene ether glycol, and the like.

[0089] Examples of polyester polyols include polycarboxylic acids (malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, sebacic acid, fumaric acid, maleic acid, terephthalic acid, isophthalic acid, etc.) or their anhydrides and polyols (ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, tripropy...

Embodiment

[0168] Hereinafter, although an Example demonstrates this invention in more detail, this invention is not limited to the following Example unless the summary is exceeded. In addition, the measuring method used in this invention is as follows.

[0169] (1) Intrinsic viscosity of polyester (dL / g)

[0170] Accurately weigh 1 g of polyester from which other polymer components and pigments incompatible with polyester have been removed, add 100 mL of a mixed solvent of phenol / tetrachloroethane = 50 / 50 (weight ratio), dissolve it, and heat at 30°C Measured below.

[0171] (2) Average particle size (d50)

[0172] The particle diameter at which the cumulative volume fraction is 50% in the equivalent spherical distribution measured with a centrifugal sedimentation type particle size distribution analyzer ("SA-CP3 type" manufactured by Shimadzu Corporation) was defined as the average particle diameter d50.

[0173] (3) Ester cyclic trimer content (oligomer content) contain...

Embodiment A1

[0320] (Manufacture of laminated polyester film F1a)

[0321] 100% by weight of polyester (D) is used as a raw material for surface layer A, and polyester (D) and (F) are mixed in a ratio of 90% by weight and 10% by weight as a raw material for surface layer B, 100% by weight of polyester (C) is used as the raw material of the intermediate layer, supplied to three extruders with vent holes, melted and extruded at 290°C, and then the surface temperature is set by the electrostatic application method. Cooling and solidification was carried out on a cooling roll at 40° C. to obtain an amorphous film with a thickness of 1500 μm. The aforementioned film was stretched 3.4 times in the longitudinal direction at 85°C.

[0322] Next, the thicknesses of the antistatic layer and the easy-adhesive layer (after drying) are each 0.06g / m 2 Coating solution 1-1 for an antistatic layer was coated on the surface layer A, and coating solution 2-1 for an easily bonding layer was coated o...

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Abstract

This laminated polyester film has an antistatic layer on at least one surface of the polyester film, and is characterized in that the antistatic layer contains a polythiophene or a polythiophene derivative, and the outermost layer of the polyester film in contact with the antistatic layer does not contain particles.

Description

technical field [0001] The present invention relates to a laminated polyester film. Specifically, it relates to a laminate suitable for various substrates such as synthetic resin plates, glass plates, metal plates, optical components, automotive components, electrical or electronic components, building material components, stationery and office supplies components, etc. Laminated polyester film for surface protection of objects. Background technique [0002] Conventionally, in order to prevent synthetic resin plates, glass plates, metal plates, glass substrates for optical components, light diffusion films, liquid crystal display components (polarizing plates, retardation plates, light guide plates, prism plates, etc.), touch panels, automotive components, For the purpose of protecting the surface of various adherends from pollution, damage, dust, etc. on the surface of electrical or electronic components, building material components, stationery or office supplies component...

Claims

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Application Information

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IPC IPC(8): B32B27/36B32B27/00B32B27/26B32B27/30
CPCB32B27/36B32B27/08C08J5/18C09J7/29C08J2367/02C09J2301/122C09J2301/16C09J2467/006B32B27/00B32B27/26B32B27/30B32B7/12B32B27/18B32B7/025C09J7/255
Inventor 源惠美森井秀和井崎公裕
Owner MITSUBISHI CHEM CORP
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