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Low melting pant tin carboxylate and its manufacturing method

A technology of low melting point and low melting point fat, which is applied in the field of low melting point aliphatic monocarboxylate tin salt and coating liquid for metal oxide thin film formation, which can solve the problem of lack of film characteristics, low solubility, and impossible film coating. And other issues

Inactive Publication Date: 2004-10-13
NOF CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, tin salts of aliphatic monocarboxylates, especially in the case of tin salts of straight-chain aliphatic monocarboxylates, have low solubility to various organic solvents, and since they are limited to soluble solvents, it is not possible to select Solvent with high substrate wettability
When using a coating liquid in which such aliphatic monocarboxylic acid tin salt is dispersed in a solvent, it is impossible to obtain a uniform coating film when coating on a substrate, and the tin oxide film finally obtained It will become uneven and become cloudy, and sufficient film properties cannot be obtained
The stability of the coating solution over time is also poor
[0007] In this way, although aliphatic monocarboxylic acid tin salts are expected to be used in various ways, they generally have a high melting point and are difficult to mix with solvents and resins
Moreover, since the solubility to various solvents is low, it is difficult to use it in the intended use, such as dissolving in a desired solvent to form a tin oxide film.

Method used

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  • Low melting pant tin carboxylate and its manufacturing method
  • Low melting pant tin carboxylate and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 11

[0095] The aliphatic monocarboxylic acid tin salt I obtained in Preparation Example 1.1 was heated and melted, and oxygen gas of an oxygen-donating substance was bubbled at a temperature of 75°C to perform a contact treatment with oxygen. As a result, a low-melting point aliphatic tin monocarboxylic acid was obtained. Salt. The aliphatic monocarboxylic acid tin salt used, the oxygen-donating substance, the reaction conditions, the mass increase rate (%: based on the tin atomic mass), the melting point and the properties at normal temperature (30°C) of the obtained compound are shown in Table 2. Table 2 shows the following Examples 1.2 to 1.8 and Comparative Examples 1.1 to 1.3 together.

Embodiment 12～18

[0097] The aliphatic monocarboxylic acid tin salt shown in Table 2 obtained in the preparation example was brought into contact with the oxygen-donating substance under the conditions shown in Table 2. In Examples 1.2 and 1.7, 30% hydrogen peroxide water was added dropwise to tin salt of aliphatic monocarboxylate, and stirred for a specified time. In embodiment 1.5, aliphatic monocarboxylic acid tin salt is placed in an ozone environment for a prescribed time. In Example 1.6, the hexanoic acid tin salt obtained in Preparation Example 1.6 was heated to above the melting point, and when it was melted, white turbidity formed by unreacted stannous sulfate decomposition products appeared, and the impurities were filtered out for future operation middle.

[0098] As a result of the above operations, low melting point tin salts of aliphatic monocarboxylates were obtained in each of the examples.

Embodiment 21

[0109] Into a four-necked flask equipped with a stirring device, a cooling tube, a thermometer, and a nitrogen introduction tube, 0.95 mol of n-heptanoic acid was added as an aliphatic monocarboxylic acid. As an alkaline aqueous solution, 20% sodium hydroxide (0.95 mol) aqueous solution was slowly added thereto, and stirred at 25° C. for 30 minutes in a nitrogen stream. As an inorganic tin compound, add 0.46 mole of tin protochloride in full. Dihydrate in 50% aqueous solution, stirred for 30 minutes. Let it sit for 5 minutes to form layers. The upper aqueous phase was removed by decantation, heated to 50°C, the lower layer was washed with water five times, and then dehydrated to obtain n-tin heptanoate as an aliphatic monocarboxylic acid tin salt. Using infrared absorption spectroscopy, it was confirmed that this compound was a tin salt of n-heptanoic acid. At a temperature of 25° C., 30% aqueous hydrogen peroxide was added dropwise to the obtained n-heptanoate, stirred for...

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Abstract

Provided is a method by which a low melting-point tin salt of an aliphatic monocarboxylic acid is easily obtained. The method for producing the low melting-point tin salt of the aliphatic monocarboxylic acid comprises a step for reacting a 4-30C aliphatic monocarboxylic acid or a salt thereof with an inorganic tin compound to provide the tin salt of the aliphatic monocarboxylic acid, and a step for bringing the resultant tin salt into contact with an oxygen-supplying material.

Description

technical field [0001] The present invention relates to a low melting point aliphatic monocarboxylic acid tin salt having good solubility in various solvents, a method for producing the same, and a coating solution for forming a metal oxide thin film containing the tin salt. Background technique [0002] The aliphatic monocarboxylic acid tin salt is used in the fields of catalysts, tin oxide film materials, coating materials, stabilizers and the like. When the aliphatic monocarboxylic acid tin salt is used for various purposes, the dispersibility of the compound into other materials is generally the most important as in the case of other metal salts of aliphatic monocarboxylic acid. For example, when the tin salt is contained in a resin sheet as a stabilizer, it is mixed with a resin and a solvent, and then the solvent is volatilized to be processed into a resin sheet or the like. However, tin salts of aliphatic monocarboxylates, especially tin salts of straight-chain aliph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G19/00C03C17/25C07C51/41
CPCC07C51/412C03C17/253C07C53/126C07C53/124C07C53/10E05D3/02E05D7/0415E05D7/081E05D2007/0484E05Y2900/132
Inventor 泽田公平本多加代子川本英贵加田幸司
Owner NOF CORP