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Ogranic acid metal salt and coating liquid contg. same for forming metal xoide film

A technology of organic acids and metal salts, applied in the fields of magnesium organic compounds, organic chemistry, preparation of organic compounds, etc., can solve the problems of white turbidity, poor stability over time, and poor stability over time of the coating film.

Inactive Publication Date: 2004-05-26
NOF CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these coating solutions have a disadvantage of poor stability over time.
[0008] In this way, the coating liquid containing magnesium salt of an organic acid has disadvantages such as the formation of white turbidity when using generally used alcohol solvents, etc., the formation of white turbidity in the coating film, or the failure to form a coating film.
Moreover, even if a transparent coating liquid is formed according to the technology in the above publication, there is also a problem of poor stability over time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] (Example 1: Production of organic acid metal salt)

[0097] In a four-necked flask equipped with a stirring device, a cooling tube, a thermometer, and a nitrogen introduction tube, 77.7 g (0.88 mol) of n-butyric acid as a monobasic saturated carboxylic acid (component a) and an inorganic magnesium compound (component b) were added 25.0 g (0.43 mol) of magnesium hydroxide and 300 g of water as a solvent were heated while stirring under a nitrogen stream to increase the internal temperature to 60°C. After stirring for another 3 hours, a colorless and transparent aqueous solution was obtained. Subsequently, the internal temperature was cooled to 50° C., and then the solvent was distilled off under reduced pressure to obtain 86.2 g of organic acid metal salt as a white solid.

[0098] About 10g of this white solid was dried at 110°C for 1 hour, and 9.9874g (A) of the sample was placed in a flask, and 190g of ion exchange water was added, while keeping the liquid temperature at ...

Embodiment 2

[0100] (Example 2: Production of organic acid metal salt)

[0101] In a four-necked flask equipped with a stirring device, a cooling tube, a thermometer, and a nitrogen introduction tube, 89.3 g (0.87 mol) of n-valeric acid as a monobasic saturated carboxylic acid (component a) and an inorganic magnesium compound (component b) were added 25.0 g (0.43 mol) of magnesium hydroxide and 300 g of water as a solvent were heated while stirring under a nitrogen stream to increase the internal temperature to 60°C. After stirring for another 3 hours, a colorless and transparent aqueous solution was obtained. Subsequently, the aqueous solution was cooled to precipitate crystals, and then the precipitated crystals were filtered, transferred to a stainless steel container, and dried under reduced pressure at 50°C to obtain 98.1 g of organic acid metal as a white solid salt.

[0102] Approximately 10 g of this white solid was dried at 110°C for 1 hour to obtain 10.0878 g of sample (A), and the s...

Embodiment 3

[0103] (Example 3: Production of organic acid metal salt)

[0104] In a four-necked flask equipped with a stirring device, a cooling tube, a thermometer, and a nitrogen introduction tube, 101.6 g (0.87 mol) of n-hexanoic acid as a monobasic saturated carboxylic acid (component a) and an inorganic magnesium compound (component b) were added 25.0 g (0.43 mol) of magnesium hydroxide and 300 g of water as a solvent were heated while stirring under a nitrogen stream to increase the internal temperature to 55°C. After stirring for another 3 hours, a colorless and transparent aqueous solution was obtained. After the aqueous solution is naturally cooled, the solvent is removed by a freeze dryer for 20 hours to obtain 101.3 g of the organic acid metal salt as a white solid.

[0105] About 10g of this white solid was dried at 110°C for 1 hour. The obtained 9.9564g sample (A) was subjected to the same operation as in Example 1, and the dry weight of the solid remaining on the filter paper (B...

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Abstract

The present invention provides an organic acid metal salt obtained by reacting a saturated monocarboxylic acid or its salt and an inorganic magnesium compound. The saturated monocarboxylic acid or its salt contains at least 97 wt% of a saturated monocarboxylic acid having 4 to 10 carbon atoms or its salt, and the organic acid metal salt contains at least 99 wt% of an organic acid magnesium salt. This organic acid metal salt consists essentially of an organic acid magnesium salt, and has excellent solubility in an alcohol solvent or a mixed solvent containing at least 5 wt% of an alcohol solvent and excellent temporal stability when being formed into a coating liquid for forming a magnesium oxide film. A coating film obtained from this coating liquid has excellent uniformity and provides a highly transparent magnesium oxide film having a thickness suitable for practical use by baking. At the time of baking after coating, there is no solvent residue in the film and environmental pollutant gas such as NOx is not emitted.

Description

Technical field [0001] The present invention relates to an organic acid magnesium salt suitable for forming a magnesium oxide thin film used for a dielectric protective film for plasma display (PDP) and the like by a coating film forming method. Background technique [0002] Magnesium oxide thin films are widely used for PDP protective films, insulating films, catalyst films, surface protective films, etc. In the past, in the method of forming a metal oxide thin film typified by magnesium oxide, a physical film forming method such as a sputtering method and a vacuum vapor deposition method was used. In these methods, a uniform and dense, highly crystalline thin film can be obtained, but on the other hand, since the film is formed under a vacuum system, a large and complicated expensive device is necessary. In addition, because of the intermittent production, there are problems of poor production efficiency and high manufacturing costs. [0003] On the other hand, compared with th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/02C07C51/41
CPCC07C51/412C07C53/128C07C53/126C07C53/124C07F3/02
Inventor 加田幸司野村秀幸本多加代子泽田公平
Owner NOF CORP
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