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Laminated polyester film

A technology of polyester film and polyester resin, applied in polyester coatings, polyurea/polyurethane coatings, coatings, etc., can solve the problems of inability to obtain adhesion, boiling resistance adhesion, etc., and achieve boiling resistance transparency Excellent, excellent visibility effect

Active Publication Date: 2014-12-24
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In Patent Document 1, although the initial adhesion to ultraviolet curable inks is excellent, problems such as adhesion in a humid heat environment and boiling resistance cannot be obtained are likely to occur.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0206] The present invention will be described more specifically based on examples. However, the present invention is not limited to the following examples.

[0207] In addition, the synthesis method of the acryl-urethane copolymer resin and the polyester resin which has a naphthalene skeleton is shown in the reference example.

reference example 1

[0209] Preparation of aqueous dispersion of acrylic-urethane copolymer resin (a-1)

[0210] Under a nitrogen atmosphere and at room temperature (25° C.), 66 parts by weight of a polyester-based urethane resin (“HYDRAN” (registered trademark) AP-40(F) manufactured by DIC Corporation) and Solution 1 was obtained with 35 parts by weight of methyl methacrylate, 29 parts by weight of ethyl acrylate, and 2 parts by weight of N-methylolacrylamide. Next, 7 parts by weight of an emulsifier ("Riasopu" ER-30 manufactured by ADEKA Corporation) was added, and water was further added so that the solid content of the solution would become 50% by weight, whereby a solution 2 was obtained. At normal temperature (25°C), 30 parts by weight of water was added to the container 2, and the temperature was raised to 60°C. Thereafter, solution 2 was continuously dropped into container 2 over 3 hours while stirring. Furthermore, 3 parts by weight of a 5% by weight potassium persulfate aqueous solutio...

reference example 2

[0213] Preparation of aqueous dispersion of polyester resin (b-1) having naphthalene skeleton

[0214] Aqueous dispersion of polyester resin with the following copolymer composition

[0215]

[0216] (dicarboxylic acid component)

[0217] Dimethyl 2,6-naphthalene dicarboxylate: 88 mol%

[0218] Sodium 5-dimethyl sulfoisophthalate: 12 mol%

[0219] (glycol component)

[0220] A compound obtained by adding 2 moles of ethylene oxide to 1 mole of bisphenol S: 86 mol%

[0221]1,3-Propanediol: 14 mol%.

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Abstract

The purpose of the present invention is to provide a laminated polyester film which has excellent translucency and excellent suppression of an iris-like pattern (interference fringe), i.e., excellent visibility, when a hard coat layer is laminated; has excellent initial adhesion to the hard coat layer, adhesiveness at high temperatures and high humidity (wet heat-resistant adhesion), and UV-resistant adhesion (adhesion after UV irradiation); and has excellent adhesion when immersed in boiling water (boiling-resistant adhesion) and boiling-resistant translucency. This objective is achieved by a laminated polyester film having a resin layer (X) on at least one surface of a polyester film, wherein the resin layer (X) is formed from a coating composition comprising an acrylic / urethane copolymer resin (a) and a polyester resin (b) having a naphthalene backbone, and the film haze change amount (DeltaHz) before and after a boiling treatment test (DeltaHz = the film haze after the boiling treatment test - the film haze before the boiling treatment test) is less than 3.0%.

Description

technical field [0001] The present invention relates to a laminated polyester film in which a resin layer is provided on at least one surface of a polyester film. In more detail, there is provided a laminated polyester film which is excellent in transparency and suppression (visibility) of iridescent patterns (interference fringes) when a hard coat layer is laminated, and , Excellent initial adhesion to the hard coat layer, moisture and heat resistance adhesion, adhesion after ultraviolet (UV) irradiation (UV resistance adhesion), and adhesion when immersed in boiling water (boiling resistance adhesion) Excellent compatibility) and excellent in suppression of deterioration of transparency (whitening) when immersed in boiling water (boiling-resistant transparency). Background technique [0002] As a representative display material, there is known a touch panel that is provided on a screen of an image display device and provides predetermined instructions to an information pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04B32B27/36C08G63/189C09D7/12C09D167/00C09D175/14G02B1/10C08J7/043C08J7/046C08J7/056
CPCG02B1/105B32B27/36C08J2367/02C08J2467/02C08G18/6229C08G18/6254C08G18/706C09D175/04C08J2475/14Y10T428/31533Y10T428/31565C08F220/343G02B1/14C08J7/043C08J7/046C08J7/056C08F220/14C08F220/1802C08F220/58C08G63/189C08J7/042C09D175/14C09D133/26
Inventor 阿部悠尾形雅美高田育
Owner TORAY IND INC
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