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Polyester composition for production of thermally cured film

A heat-curing and composition technology, applied in polyester coatings, coatings, instruments, etc., can solve the problems of reduced planarization and transparency, low solubility, difficulty in applying planarized film production lines, etc., and achieve high heat resistance properties, high planarization, and high solvent resistance

Active Publication Date: 2012-07-18
NISSAN CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the case of a flattening film used as a color filter, there are problems such as a significant decrease in flattening properties and transparency.
In addition, polyimide or polyamic acid is soluble in solvents such as N-methylpyrrolidone or γ-butyrolactone, but its solubility in glycol solvents or ester solvents is low, so it is difficult to apply for planarization Film production line

Method used

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  • Polyester composition for production of thermally cured film
  • Polyester composition for production of thermally cured film
  • Polyester composition for production of thermally cured film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0117] The following examples are given to illustrate the present invention in more detail, but the present invention is not limited to these examples.

[0118] [Abbreviated symbols used in Examples]

[0119] The meanings of the abbreviations used in the following examples are as follows.

[0120]

[0121] HBPDA: 3,3'-4,4'-Dicyclohexyltetracarboxylic dianhydride

[0122] HPMDA: 1,2,4,5-cyclohexyltetracarboxylic dianhydride

[0123] BPDA: biphenyltetracarboxylic dianhydride

[0124] TDA: 4-(2,5-dioxotetrahydrofuran-3-yl)-1,2,3,4-tetrahydronaphthalene-1,2-dicarboxylic anhydride [4-(2,5-dioxotetrahydrofuran-3- yl)-1,2,3,4-tetrahydronaphthalene-1,2-dicarboxylic acid anhydride]

[0125] 6FDA: 4,4'-(hexafluoroisopropylidene)phthalic dianhydride

[0126] PMDA: pyromellitic dianhydride

[0127] ODPA: bis(3,4-dicarboxyphenyl) ether dianhydride

[0128] Acid dianhydride

[0129] HBPA: hydrogenated bisphenol A

[0130] CHDO: 1,4-cyclohexanediol

[0131] pXG: Tere-Phenyldimeth...

Synthetic example 1

[0153] A polyester solution (solid concentration: 30.0% by mass) was obtained by reacting 12.0 g of HBPDA, 10.2 g of HBPA, 0.95 g of THPA, and 0.22 g of BTEAC as a catalyst in 54.48 g of PGMEA at 120° C. for 19 hours (P1). Mn of the obtained polyester was 2,280, and Mw was 4,200.

Synthetic example 2

[0155] A polyester solution (solid concentration: 30.0% by mass) was obtained by reacting 18.0 g of HBPDA, 4.54 g of BPDA, 15.9 g of HBPA, 2.01 g of THPA, and 0.19 g of BTEAC as a catalyst in 95.1 g of PGMEA at 120° C. for 19 hours (P2). Mn of the obtained polyester was 1,510, and Mw was 3,570.

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Abstract

To provide a material which can be formed into a cured film having high solvent resistance, liquid crystal-aligning properties, heat resistance, high transparency and high planarization, and which can be dissolved in a glycol-type solvent and a lactic acid ester-type solvent (which are solvents applicable in the production line for a planarized film of a color filter) in the formation of a cured film from the material. Disclosed is a polyester composition for the production of a thermally cured film, which comprises the following components (A) and (B): (A) a polyester having a constituent unit represented by the formula (1); and (B) an epoxy compound having two or more epoxy groups. (1) wherein A and B independently represent an organic group containing a ring structure.

Description

technical field [0001] The present invention relates to a thermosetting film-forming polyester composition and a cured film obtained from the thermosetting film-forming polyester composition. More specifically, the present invention relates to a polyester composition for forming a thermosetting film having high transparency, planarization, liquid crystal orientation ability, and high solvent resistance, the cured film, and uses of the cured film. This polyester composition for thermosetting film formation is especially suitable for the color filter overcoating agent which has the function of the liquid crystal alignment in a liquid crystal display. Background technique [0002] Generally, in optical devices such as liquid crystal display elements, organic EL (electroluminescence) elements, and solid-state imaging elements, a protective film is provided on the surface of the element to prevent exposure to solvents or heat during the manufacturing process. The protective film...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/42C08L63/00C08L67/00C09D163/00C09D167/00G02F1/1337C08G63/12C08K5/3415
CPCC08L67/00C08K5/3415C08L63/00C09D163/00
Inventor 畑中真安达勲
Owner NISSAN CHEM CORP
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