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Polyamic acid solution using diamine monomer and polyimide film containing same

A technology of polyimide film and polyamic acid, applied in the direction of organic chemistry, photovoltaic power generation, etc., can solve the problem of low transmittance in the visible light region, and achieve the effect of excellent physical properties and product reliability

Active Publication Date: 2021-04-06
DOOSAN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyimide resin (PI) is colored brown or yellow due to the influence of the charge transfer complex (CTC: Change transfer complex), so the transmittance in the visible light region is low, so it is as good as a glass substrate. There are limitations in terms of high transparency

Method used

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  • Polyamic acid solution using diamine monomer and polyimide film containing same
  • Polyamic acid solution using diamine monomer and polyimide film containing same
  • Polyamic acid solution using diamine monomer and polyimide film containing same

Examples

Experimental program
Comparison scheme
Effect test

Synthetic example 1

[0090] [Synthesis Example 1] Synthesis of Compound 1

[0091]

[0092] 1-1. Synthesis of Intermediate 2

[0093] 1-Bromo-4-nitro-2-(trifluoromethyl)benzene (54 g, 200 mmol), 2,2'-(2-(trifluoromethyl)-1,4-phenylene)bis( 4,4,5,5-Tetramethyl-1,3,2-dioxaborolane) (39.8g, 100mmol), Pd(PPh 3 ) 4 (13.5 g, 10 mol%) was put into the flask. Put 300ml of toluene and 150ml of THF, and add K 2 CO 3( 83 g, 600 mmol) was dissolved in 200 ml of distilled water, and heated and stirred for 13 hours.

[0094] After confirming the completion of the reaction by TLC, the reaction solution was filtered and extracted twice with 100 ml of ethyl acetate. After removing the solvent with a rotary evaporator (rotary evaporator), crystallization was performed using MeOH to obtain compound 2 (34.13 g, yield 65%).

[0095] Elemental analysis: C, 48.11; H, 1.73; F, 32.61; N, 5.34; O, 12.21

[0096] HRMS[M] + :524

[0097] 1-2. Synthesis of compound 1

[0098] 34.13 g (65 mmol) of Intermediate 2 ...

Synthetic example 2

[0101] [Synthesis Example 2] Synthesis of Compound 4

[0102] It can be synthesized by the same method as that of compound 1 in Example 1.

[0103] Elemental analysis: C, 55.57; H, 2.80; F, 35.16; N, 6.48

[0104] HRMS[M] + :432

Synthetic example 3

[0105] [Synthesis Example 3] Synthesis of Compound 5

[0106] It can be synthesized by the same method as that of compound 1 in Example 1.

[0107] Elemental analysis: C, 51.30; H, 2.15; F, 40.57; N, 5.98

[0108] HRMS[M] + :468

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Abstract

The present invention provides a monomer usable as a diamine component of a polyamic acid, a polyamic acid composition containing the monomer, and a polyimide produced from the composition. The polyamic acid composition provided in the present invention with excellent optical, thermal and mechanical properties can be used as a flexible display material.

Description

technical field [0001] The present invention relates to a diamine-based monomer, a polyamic acid composition containing the diamine monomer for producing a transparent polyimide resin, and a polyamic acid composition produced from the above-mentioned composition and capable of being used as a flexible display substrate or a protective film Transparent polyimide resin. Background technique [0002] With the thinning and miniaturization of flat panel displays (FPDs), transparent plastic substrates are required to replace glass substrates when manufacturing flat panel displays. [0003] Due to such demands, transparent plastic substrates manufactured by forming a polymer resin such as polyethylene terephthalate (PET) or polyether sulfone (PES) into a film have been developed. A transparent plastic substrate made of a polymer resin such as PET or PES is more flexible than a glass substrate, but has a lower glass transition temperature (Tg), and thus has a problem of lower heat ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/10C08L79/08C08J5/18C07C211/43C07C211/44
CPCC07C211/43C07C211/44C08J5/18C08G73/10C08L79/08
Inventor 安炅日金东演李宰勋金善怜吴炫锡
Owner DOOSAN CORP
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