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Polyimide resin composition, polyimide varnish, and polyimide film

A technology of polyimide resin and polyimide film, applied in the direction of coating, etc., can solve problems such as adverse effects of components, achieve high heat resistance and thermal stability, excellent colorless transparency and optical isotropy same-sex effect

Pending Publication Date: 2022-05-10
MITSUBISHI GAS CHEM CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, in the dehydrogenation process of amorphous silicon, sometimes a high temperature state is maintained, for example, for about 30 minutes to 60 minutes. During this period, organic compounds (outgassing) originating from the volatilization of the plastic substrate material itself may have a profound adverse effect on the device. Worry

Method used

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  • Polyimide resin composition, polyimide varnish, and polyimide film
  • Polyimide resin composition, polyimide varnish, and polyimide film
  • Polyimide resin composition, polyimide varnish, and polyimide film

Examples

Experimental program
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Effect test

Embodiment

[0207] Hereinafter, the present invention will be specifically described based on examples. However, the present invention is not limited in any way by these examples.

[0208] The solid content concentration of the polyimide varnish obtained in the Example and the comparative example, and each physical property of a polyimide film were measured by the method shown below.

[0209] (1) Solid content concentration

[0210] The solid content concentration of the polyimide varnish was measured by heating the sample at 320° C.×120 minutes in a small electric furnace “MMF-1” manufactured by AS ONE Corporation, and calculating from the mass difference of the sample before and after heating.

[0211] (2) Film thickness

[0212] The film thickness was measured with a micrometer manufactured by Mitutoyo Co., Ltd.

[0213] (3) Total light transmittance, yellow index (YI)

[0214] The total light transmittance and YI were measured according to JIS K7361-1:1997 using a color / turbidity ...

Synthetic example 1

[0244] 34.845 g (0.100 g (0.100 g) were put into a 1 L five-neck round-bottomed flask equipped with a stainless steel half-moon-shaped stirring blade, a nitrogen introduction tube, a condenser tube, a Dean-Stark trap, a thermometer, and a glass end cap. mol) of BAFL and 98.826 g of NMP were stirred at a temperature of 70° C. in the system, under a nitrogen atmosphere, and at a rotational speed of 150 rpm to obtain a solution.

[0245]To this solution, 45.843 g (0.100 mol) of BPAF and 24.206 g of NMP were simultaneously added, and then 0.506 g of TEA as an imidization catalyst was added, heated in a covered heater, and reacted for about 20 minutes. The temperature in the system was raised to 190°C. The components removed by distillation were collected, the rotational speed was adjusted as the viscosity increased, and the temperature in the reaction system was maintained at 190° C. to perform reflux for 3 hours.

[0246] Then, 572.724 g of NMP was added, and after cooling the t...

Synthetic example 2

[0248] A polyimide varnish was prepared in the same manner as in Synthesis Example 1, except that 34.845 g (0.100 mol) of BAFL was changed to 33.620 g (0.100 mol) of 6FODA, and a polyimide varnish having a solid content concentration of 10.0 mass % was obtained. Imide varnish.

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Abstract

A polyimide resin composition includes a polyimide resin, and a rare earth element oxide or a rare earth element hydroxide.

Description

technical field [0001] The present invention relates to a polyimide resin composition, a polyimide varnish and a polyimide film. Background technique [0002] Various uses of polyimide resins in fields such as electrical / electronic components have been studied. For example, for the purpose of reducing the weight and flexibility of displays, it is desired to replace glass substrates used in image display devices such as liquid crystal displays and OLED displays with plastic substrates, and research on polyimide films suitable for the plastic substrates has been advanced. . Colorless transparency is required for the polyimide film for this purpose. [0003] In image display devices such as liquid crystal displays and OLED displays, thin film transistors (TFTs) are used as pixel switching elements. Compared with amorphous silicon, polycrystalline silicon (Polysilicon) having excellent crystallinity has higher electron mobility, and therefore, TFT characteristics are greatly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08K3/22C08G73/10
CPCC08K3/22C08G73/10C08K2003/221C08L79/08C08G73/1042C08G73/1039C08G73/1064C09D179/08C08J5/18C08J2379/08
Inventor 巽勇介三田寺淳
Owner MITSUBISHI GAS CHEM CO INC
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