Method for manufacturing multilayer body having polyimide layers and method for manufacturing polyimide film

A technology of polyimide layer and polyimide film, applied in chemical instruments and methods, lamination, coating, etc., can solve the problem of dimensional stability, transparency, heat resistance, moisture resistance, and gas barrier properties To solve the problems such as good quality, achieve the effect of reducing CTE, easy handling, and simplified manufacturing steps

Inactive Publication Date: 2017-04-05
NIPPON STEEL CHEM &MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, resins are generally inferior in dimensional stability, transparency, heat resistance, moisture resistance, gas barrier properties, etc. compared to glass, so various studies are being conducted to improve these properties

Method used

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  • Method for manufacturing multilayer body having polyimide layers and method for manufacturing polyimide film
  • Method for manufacturing multilayer body having polyimide layers and method for manufacturing polyimide film
  • Method for manufacturing multilayer body having polyimide layers and method for manufacturing polyimide film

Examples

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Effect test

Embodiment

[0099] Hereinafter, the present invention will be described in detail based on examples, but the present invention is not limited by the scope of the following examples.

[0100] The abbreviations and measurement methods and conditions of various physical properties in Examples are shown below.

[0101] TFMB: 2,2′-bis(trifluoromethyl)-4,4′-diaminobiphenyl

[0102] 6FDA: 2,2′-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride

[0103] PMDA: pyromellitic dianhydride

[0104] DMAc: N,N-Dimethylacetamide

[0105] ·Warpage

[0106] The laminated body which has a polyimide layer was made downward with the support base material side, it cut out to the size of 10 cm x 10 cm, it placed on a flat place, and the state of the warpage of the laminated body was judged. The numerical value of the average value of the floating amount (mm) of the 4 corners of a laminated body sheet was made into the amount of curvature. In addition, when the supporting base material side is warped, it ...

Synthetic example 1

[0110] 849 g of TFMB were dissolved in 7 kg of DMAc in a 30 L reactor. Next, 147 g of 6FDA was added to this solution and stirred, then 504 g of PMDA was added, and 1.5 kg of DMAc was added so that the solid content became 15 wt%, and the mixture was stirred at room temperature for 5 hours to conduct a polymerization reaction. After the reaction, a viscous transparent polyamic acid solution A was obtained.

Synthetic example 2

[0112] 765 g of TFMB was dissolved in 7 kg of DMAc in a 30 L reactor. Next, 423 g of 6FDA was added to this solution and stirred, then 311 g of PMDA was added, and 1.5 kg of DMAc was added so that the solid content became 15 wt%, and the mixture was stirred at room temperature for 5 hours to conduct a polymerization reaction. After the reaction, a viscous transparent polyamic acid solution B was obtained.

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Abstract

The invention provides a method for manufacturing a curl reduced multilayer body having polyimide layers and a method for manufacturing polyimide film. The method for manufacturing the multilayer body having the polyimide layer comprises the steps: the multilayer body comprises more than one layer of polyimide layer on a support substrate, wherein a flexible film serves as the support substrate, the support substrate is coated by a polyamide acid solution or a polyimide solution, so that more than one coating layers are formed; the support substrate having coating layers is moved while one side of the support substrate is heated; in the last step, a mechanism on the end in the width direction of the support substrate is holden, the end in the width direction of the support substrate having the coating layer is fixed or stretched in the width direction, the support substrate is moved in the convey direction, then polyimide layers are formed.

Description

technical field [0001] The present invention relates to a method for producing a laminate having a polyimide layer, a method for producing a polyimide film using the laminate, and a method for producing a laminate having a functional layer on the polyimide layer . Background technique [0002] The polyimide film is excellent as a polyimide film for flexible elements. The present invention is suitable as an electrode used in flexible components such as touch panels, barrier films, liquid crystal display devices, organic electroluminescence (EL) displays, organic EL lighting, electronic paper, color filters, circuit substrates, and covering layers. Process for the manufacture of thin polyimide films. [0003] For example, display devices such as liquid crystal display devices and organic EL display devices are used in various display applications including large displays such as televisions and small displays such as mobile phones, personal computers, and smartphones. Among...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C69/02B29C41/30B29C41/46B29C55/08B29C55/12B29K79/00B29L9/00
CPCB29C41/30B29C41/46B29C55/08B29C55/12B29C69/02B29K2079/08B29L2009/005B32B15/08B32B27/08B32B27/281B32B37/06B32B38/1825B32B2379/08
Inventor 山田裕明森本敏弘林信行平石克文
Owner NIPPON STEEL CHEM &MATERIAL CO LTD
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