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Curing resin composition and sealants and end-sealing materials for displays

a technology of resin composition and sealant, applied in the direction of instruments, non-linear optics, other chemical processes, etc., can solve the problem of inferior humidity resistance, and achieve the effect of excellent storage stability

Inactive Publication Date: 2007-01-25
SEKISUI CHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012] It is an object of the invention to provide a curing resin composition that scarcely causes pollution of a liquid crystal owing to elution of its components to the liquid crystal material and therefore, causes little unevenness of color in liquid crystal display in the case of using it as a sealant for a liquid crystal display element or an end-sealing material for a liquid crystal display element in fabrication of a liquid crystal display element and that is excellent in the storage stability and therefore, optimum for fabrication of a display apparatus especially by one drop fill process and to provide a sealant for a display element and an end-sealing material for a display element using the composition.

Problems solved by technology

When the ratio is less than 3% by atom, the adhesion property to a substrate is inferior in the case of using the composition as a sealant or an end-sealing material and when it is more than 10% by atom, humidity resistance is inferior.

Method used

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  • Curing resin composition and sealants and end-sealing materials for displays
  • Curing resin composition and sealants and end-sealing materials for displays
  • Curing resin composition and sealants and end-sealing materials for displays

Examples

Experimental program
Comparison scheme
Effect test

example 2

[0156] A sealant was obtained in the same manner as Example 1, except that partly acrylated propyleneoxide product obtained as (B) 20 parts by weight was used in place of the urethane-modified partly acylated product obtained as (C) 20 parts by weight and a hydrazide type curing agent (NDH, produced by Japan Hydrazine Co., Inc.) 15 parts by weight was used in place of the hydrazide type curing agent (Amicure VDH, produced by Ajinomoto Fine Techno Co., Inc.) 15 parts by weight and using the sealant, a liquid crystal display cell was fabricated.

example 3

(Synthesis of Benzoin Ether Compound A)

[0174] Potassium hydroxide 0.4 g was dissolved in ethanol 5 mL and dimethyl sulfoxide 200 mL was further added to obtain a solution. Benzoin methyl ether 30 g (0.13 mol) was dissolved in the solution and paraformaldehyde 5 g (0.16 mol) was added and reacted at 40° C. for 3 hours under nitrogen current. After that, the reaction product was cooled to a room temperature and neutralized with a dilute hydrochloric acid and then saturated salt water 120 mL was added. The solution was extracted by ethyl acetate and the extracted liquid was washed with saturated salt water three times. The washed product was dried and concentrated by anhydrous magnesium sulfate and recrystallized by diethyl ether. α-methylol benzoin methyl ether (MBME) was obtained in such a manner.

[0175] The obtained MBME was reacted with an equimolar amount of tolylene diisocyanate at 60° C. for 1 hour in the presence of dibutyl tin dilauryl in a catalytic amount and then 2-hydrox...

example 4

(Synthesis of Benzoin Ether Compound B)

[0176]α-2-carboxyethyl-benzoine methyl ether (BAE-CO2H) was obtained in the same manner as that for production of the benzoin ether compound A, except that acrylic acid was used in place of the paraformaldehyde. Glycidyl methacrylate in an amount equivalent by mole and trimethylamine in a catalytic amount were added to the obtained BAE-CO2H and reaction was carried out at 80° C. for 4 hours to obtain a benzoin ether compound B shown as follows.

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Abstract

It is an object of the invention to provide a curing resin composition that scarcely causes pollution of a liquid crystal owing to elution of its components to the liquid crystal material and therefore, causes little unevenness of color in liquid crystal display in the case of using it as a sealant for a liquid crystal display element or an end-sealing material for a liquid crystal display element in fabrication of a liquid crystal display element and that is excellent in the storage stability and therefore, optimum for fabrication of a display apparatus especially by one drop fill process and to provide a sealant for a display element and an end-sealing material for a display element using the composition. The invention provides a curing resin composition to be used for a sealant or an end-sealing material for a display element, which comprises a curing resin together with a photopolymerization initiator and / or a curing agent and, has a carbonyl group derived from a (meth)acryl group together with an epoxy group and / or a hydroxyl group derived from an epoxy group and, a cured product of which has nitrogen atoms at a ratio of 3 to 10% by atom in the total of carbon atoms, hydrogen atoms and nitrogen atoms in the composition; a volume resistance of 1×1013 Ω·cm or higher; a dielectric constant of 3 or higher at 100 kHz; and a glass transition temperature of 80 to 150° C.

Description

FIELD OF THE INVENTIION [0001] The invention relates to a curing resin composition which scarcely causes pollution of a liquid crystal owing to elution of its components to the liquid crystal material and therefore, causes little unevenness of color in liquid crystal display in the case of using it as a sealant for a liquid crystal display element or an end-sealing material for a liquid crystal display element in fabrication of a liquid crystal display element and that is excellent in the storage stability and therefore, optimum for fabrication of a display apparatus especially by one drop fill process and relates to a sealant for a display element and an end-sealing material for a display element using the composition. BACKGROUND ART [0002] Conventionally, a liquid crystal display element such as a liquid crystal display cell is fabricated by setting two electrode-bearing transparent substrates face to face at a prescribed distance, forming a cell by sealing their surrounding with ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C07D303/40C09K3/10G02F1/1339H01L51/52
CPCC09K3/10C09K2200/0625H01L51/5237G02F1/1339C09K2200/0647Y10T428/31511H10K59/122H10K59/8051H10K59/8722H10K50/81H10K50/8426
Inventor WATANABE, TAKASHIOYAMA, YUICHIYAMAMOTO, TAKUYASASAKI, NOBUOIKEGUCHI, TAZOHNAKAHARA, MAKOTO
Owner SEKISUI CHEM CO LTD
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