Solution of aromatic polyamide for producing display element, optical element, or illumination element

A display element, polyamide technology, applied in the manufacture of display elements, the manufacture of polyamide solutions, optical elements or lighting elements, can not solve problems such as thermal stability

Inactive Publication Date: 2015-06-24
AKRON POLYMER SYST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the T of these polymers g Can be higher than 300°C, but at these temperatures the polymer does not exhibit sufficient thermal stability due to its aliphatic units

Method used

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  • Solution of aromatic polyamide for producing display element, optical element, or illumination element
  • Solution of aromatic polyamide for producing display element, optical element, or illumination element
  • Solution of aromatic polyamide for producing display element, optical element, or illumination element

Examples

Experimental program
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Effect test

Embodiment approach

[0086] According to an embodiment of the present disclosure, the method also includes the following steps:

[0087] h) peeling off the display element, optical element or lighting element formed on the substrate from the substrate.

[0088] According to one embodiment of the present disclosure, the aromatic diacid dichloride used in the polymerization of the copolyamide is shown in the following general structure:

[0089]

[0090] where p=4, q=3, and where R 1 , R 2 , R 3 , R 4 , R 5 selected from hydrogen, halogen (fluorine, chlorine, bromine and iodine), alkyl, substituted alkyl such as haloalkyl, nitro, cyano, thioalkyl, alkoxy, substituted alkoxy such as haloalkoxy, aryl radical or substituted aryl such as haloaryl, alkyl and substituted alkyl esters, and combinations thereof. It should be understood that each R 1 can be different for each R 2 can be different for each R 3 can be different for each R 4 can be different, and each R 5 can be different. G 1 s...

Embodiment 1

[0165] Example 1. This example illustrates the general procedure for the preparation of copolymers from TPC, IPC and PFMB (70% / 30% / 100% mol) via solution condensation.

[0166] PFMB (3.2024 g, 0.01 mol) and dry DMAc (45 ml) were added to a 250 ml three necked round bottom flask equipped with a mechanical stirrer, nitrogen inlet and outlet. After PFMB was completely dissolved, IPC (0.6395 g, 0.003 mol) was added to the solution at room temperature under nitrogen, and the flask wall was washed with DMAc (1.5 ml). After 15 minutes, TPC (1.4211 g, 0.007) was added to the solution and the walls of the flask were washed again with DMAc (1.5 ml). The viscosity of the solution increases until the mixture forms a gel. After the addition of PrO (1.4 g, 0.024 mol), the gel collapsed with stirring to form a viscous, homogeneous solution. After an additional 4 hours of stirring at room temperature, the resulting copolymer solution could be cast directly into a film.

Embodiment 2

[0167] Example 2. This example illustrates the general procedure for the preparation of copolymers from TPC, PFMB and FDA (100% / 80% / 20% mol) via solution condensation.

[0168] To a 100 ml four necked round bottom flask equipped with a mechanical stirrer, nitrogen inlet and outlet, was added PFMB (1.0247 g, 3.2 mmol), FDA (0.02788 g, 0.8 mmol) and dry DMAc (20 ml) at room temperature under nitrogen. After PFMB was completely dissolved, TPC (0.8201 g, 4.04 mmol) was added to the solution, and the walls of the flask were washed with DMAc (5.0 ml). The viscosity of the solution increases until the mixture forms a gel. After the addition of PrO (0.5 g, 8.5 mmol), the gel collapsed with stirring to form a viscous, homogeneous solution. After an additional 4 hours of stirring at room temperature, the resulting copolymer solution could be cast directly into a film.

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Abstract

The present disclosure is directed toward solutions, transparent films prepared from aromatic copolyamides, and a display element, an optical element or an illumination element using the solutions and / or the films. The copolyamides, which contain pendant carboxylic groups are solution cast into films using cresol, xylene, N,N-dimethylacetamide (DMAc), N-methyl-2-pyrrolidinone (NMP), dimethylsulfoxide (DMSO), or butyl cellosolve or other solvents or mixed solvent which has more than two solvents. When the films are thermally cured at temperatures near the copolymer glass transition temperature, after curing, the polymer films display transmittances >80% from 400 to 750 nm, have coefficients of thermal expansion of less than 20 ppm, and are solvent resistant.

Description

[0001] Cross References to Related Applications [0002] This application is based on and claims priority under 35 U.S.C. 119 to U.S. Provisional Patent Application 61 / 704,846, filed September 24, 2012, which is hereby incorporated by reference in its entirety. field of invention [0003] In one aspect, the present disclosure relates to a polyamide solution comprising an aromatic copolyamide and a solvent. Another aspect of the disclosure relates to a method of making a polyamide solution. In another aspect, the present disclosure relates to a method of manufacturing a display element, an optical element, or a lighting element, which includes the step of forming a polyamide film using a polyamide solution. Background technique [0004] The organic light-emitting diode (OLED) display market volume was 1.25 billion US dollars in 2010, and it is expected to grow at a rate of 25% per year. The high efficiency and high contrast ratio of OLED displays make them a suitable repla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/32C08L77/06
CPCC08G69/265C08G69/32C08L77/10C08L77/00C08L77/06B29C33/58
Inventor 法兰克·W·哈里斯张东孙立民景蛟凯江口敏正楳田英雄川崎律也片山敏彦井上雄介冈田润前田文宽井上美津穗内藤学
Owner AKRON POLYMER SYST
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