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Composition for forming release layer, and release layer

A peeling layer and composition technology, applied in the direction of coatings, layered products, chemical instruments and methods, etc., can solve the problems of peeled layer damage, etc., and achieve the effects of increased yield, good reproducibility, and excellent solubility

Active Publication Date: 2019-03-15
NISSAN CHEM IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the methods disclosed in Patent Documents 1 to 4, especially the method disclosed in Patent Document 4, have the following problems: In order to transmit the laser light, a substrate with high light transmittance must be used; Furthermore, irradiation of a relatively high-energy laser that releases hydrogen contained in amorphous silicon; sometimes damage is caused to the layer to be peeled off by irradiation of the laser
However, resins such as polyimide resins (or their precursors) generally used in the release layer forming composition are insoluble in these low-viscosity solvents, so it is difficult to adopt the slit coating method for the formation of the release layer.

Method used

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  • Composition for forming release layer, and release layer
  • Composition for forming release layer, and release layer
  • Composition for forming release layer, and release layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0146] The following examples are given to illustrate the present invention in more detail, but the present invention is not limited to these examples.

[0147] [1] Abbreviation of compound

[0148] p-PDA: p-phenylenediamine

[0149] TPDA: 4,4”-diamino-p-terphenyl

[0150] TFMB: 2,2’-bis(trifluoromethyl)benzidine

[0151] BPDA: 3,3’,4,4’-Biphenyltetracarboxylic dianhydride

[0152] PMDA: pyromellitic dianhydride

[0153] DMCBDA: 1,3-Dimethylcyclobutanetetracarboxylic dianhydride

[0154] CBDA: cyclobutane tetracarboxylic dianhydride

[0155] MMA: methyl methacrylate

[0156] MAA: methacrylic acid

[0157] HEMA: 2-Hydroxyethyl methacrylate

[0158] AIBN: Azobisisobutyronitrile

[0159] CHMI: Cyclohexylmaleimide

[0160] EPOLEAD GT-401: Butane tetracarboxylate tetra(3,4-epoxycyclohexylmethyl) ester modified ε-caprolactone, manufactured by Daicel Co., Ltd.

[0161] CELLOXIDE 2021P: 3',4'-epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylate, manufactured by Daicel Co.,...

Synthetic example S1

[0172]

[0173] 3.218 g (30 mmol) of p-PDA was dissolved in 88.2 g of NMP. BPDA 8.581g (29mmol) was added to the obtained solution, and it was made to react at 23 degreeC under nitrogen atmosphere for 24 hours. The Mw of the obtained polymer was 107,300, and the molecular weight distribution was 4.6.

Synthetic example S2

[0174]

[0175] Dissolve 20.261g (0.1875mol) of p-PDA and 12.206g (0.0469mol) of TPDA in 617.4g of NMP, cool to 15°C, add 50.112g (0.2298mol) of PMDA, and react at 50°C under a nitrogen atmosphere for 48 hours. The Mw of the obtained polymer was 82,100, and the molecular weight distribution was 2.7.

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PUM

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Abstract

Provided is a composition for forming a release layer, the composition including polyamic acid represented by formula (1) and an organic solvent. (In the formula, X represents an aromatic group represented by formula (2a) or (2b), Y represents a divalent aromatic group having a fluorine atom, Z each independently represent an aromatic group represented by formula (3a) or (4a) when X is representedby formula (2a) or each independently represent an aromatic group represented by formula (3b) or (4b) when X is represented by formula (2b), and m represents a natural number.).

Description

technical field [0001] The present invention relates to a composition for forming a release layer and a release layer. Background technique [0002] In recent years, in addition to properties such as thinning and lightening, electronic devices have been required to be given functions such as being able to bend. From this point of view, it is required to use a lightweight flexible plastic substrate instead of the conventional heavy, fragile, and inflexible glass substrate. [0003] In particular, development of an active matrix type full-color TFT display panel using a lightweight flexible plastic substrate (hereinafter referred to as a resin substrate) is required for next-generation displays. We look forward to transferring technologies related to this next-generation display to various fields such as flexible displays, flexible smartphones, and mirror displays. [0004] Therefore, researches on the manufacturing methods of various electronic devices using resin films as ...

Claims

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Application Information

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IPC IPC(8): C09D179/08B32B27/00B32B27/34C08G73/10C08L79/08
CPCB32B27/00B32B27/34C09D179/08C08G73/10C08L79/08C08G73/1032C08G73/1039
Inventor 江原和也进藤和也
Owner NISSAN CHEM IND LTD
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