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Polyimide precursor, polyimide, polyimide film, varnish, and substrate

A polyimide precursor, polyimide technology, applied in the direction of coating, etc., can solve problems such as not mentioned, and achieve the effects of easy formation, excellent performance, and high heat resistance

Inactive Publication Date: 2016-07-27
UBE IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no mention of the stereostructure of norbornyl-2-spiro-α-cyclopentanone-α′-spiro-2″-norbornyl-5,5″,6,6″-tetracarboxylic dianhydride

Method used

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  • Polyimide precursor, polyimide, polyimide film, varnish, and substrate
  • Polyimide precursor, polyimide, polyimide film, varnish, and substrate
  • Polyimide precursor, polyimide, polyimide film, varnish, and substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0232] CpODA-1 is provided as a tetracarboxylic acid component. 2.27 g (10 mmol) of DABAN was placed in the reaction vessel, which was purged with nitrogen, and 29.83 g of N-methyl-2-pyrrolidone was added thereto so that the total weight of the charged monomers (diamine group The total weight of the component and the carboxylic acid component) was 17% by weight, and the mixture was stirred at room temperature for 1 hour. 3.84 g (10 mmol) of CpODA-1 was gradually added to the resulting solution. The mixture was stirred at room temperature for 12 hours to provide a homogeneous and coherent polyimide precursor solution.

[0233] A polyimide precursor solution filtered through a PTFE membrane filter is applied on a glass substrate, and then the polyimide precursor solution on the glass substrate is heated from room temperature to The polyimide precursor was thermally imidized at 410° C. to provide a colorless and transparent polyimide film / glass laminate. Next, the obtained pol...

Embodiment 2

[0236] CpODA-1 is provided as a tetracarboxylic acid component. 1.59g (7mmol) of DABAN and 0.32g (3mmol) of PPD were placed in a reaction vessel, which was purged with nitrogen, and 28.07g of N-methyl-2-pyrrolidone was added therein so that the charged monomer The total weight of (the total weight of the diamine component and the carboxylic acid component) was 17% by weight, and then the mixture was stirred at room temperature for 1 hour. 3.84 g (10 mmol) of CpODA-1 was gradually added to the resulting solution. The mixture was stirred at room temperature for 12 hours to provide a homogeneous and coherent polyimide precursor solution.

[0237] A polyimide precursor solution filtered through a PTFE membrane filter is applied on a glass substrate, and then the polyimide precursor solution on the glass substrate is heated from room temperature to The polyimide precursor was thermally imidized at 410° C. to provide a colorless and transparent polyimide film / glass laminate. Next...

Embodiment 3

[0240]CpODA-1 is provided as a tetracarboxylic acid component. The DABAN of 0.91g (4mmol) and the PPD of 0.65g (6mmol) are placed in reaction vessel, it is purged with nitrogen, and the N-methyl-2-pyrrolidone of 26.60g is added wherein, makes the monomer of charging The total weight of (the total weight of the diamine component and the carboxylic acid component) was 18% by weight, and then the mixture was stirred at room temperature for 1 hour. 3.84 g (10 mmol) of CpODA-1 was gradually added to the resulting solution. The mixture was stirred at room temperature for 12 hours to provide a homogeneous and coherent polyimide precursor solution.

[0241] A polyimide precursor solution filtered through a PTFE membrane filter is applied on a glass substrate, and then the polyimide precursor solution on the glass substrate is heated from room temperature to The polyimide precursor was thermally imidized at 410° C. to provide a colorless and transparent polyimide film / glass laminate....

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Abstract

This polyimide precursor comprises: a tetracarboxylic acid component including a norbornane-2-spiro-alpha-cyclopentanone-alpha '-spiro-2''-norbornane-5,5'', 6, 6''-tetracarboxylic dianhydride or a derivative thereof; and a diamine component including diamine or a derivative thereof. The polymide precursor is characterized by the norbornane-2-spiro-alpha-cyclopentanone-alpha '-spiro-2''-norbornane-5,5'', 6, 6''-tetracarboxylic dianhydride having a peak area ratio for a specific peak of at least 60%, in a gas chromatograph obtained by gas chromatography analysis.

Description

technical field [0001] The present invention relates to a polyimide having excellent properties such as high transparency and high heat resistance, and having a very low coefficient of linear thermal expansion at high temperatures, and a precursor thereof. The present invention also relates to a polyimide film, a varnish containing a polyimide precursor or polyimide, and a substrate. Background technique [0002] With the advent of an advanced information society, development of optical materials such as optical fibers and optical waveguides in the field of optical communications, and liquid crystal oriented films and protective films for color filters in the field of display devices has been developed. In the field of display devices, especially plastic substrates that are lightweight and have excellent flexibility have been studied as a substitute for glass substrates, and development of displays that can be bent and rolled up is also underway with high strength. Therefo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/10
CPCC08G73/1039C08G73/1046C08G73/105C08G73/1078C08G73/14C09D179/08C08G73/10C08G73/1075C08J5/18C08L79/08
Inventor 冈卓也小滨幸德久野信治
Owner UBE IND LTD
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