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Preparation technique of cobalt decanoate by hybrid reaction of cobaltous carbonate and organic acid

A preparation process, technology of cobalt neodecanoate, applied in the field of preparation of cobalt decanoate, can solve the problems of low cobalt content, unstable adhesion, and low melting point of cobalt neodecanoate, achieve enhanced adhesion level, prevent metal Corrosion, pH balance effect

Inactive Publication Date: 2009-01-21
逯大成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The cobalt neodecanoate prepared by this method has a low cobalt content. It is a viscous semi-solid organic cobalt salt at room temperature, and it becomes a fluid at about 60°C. It has a low melting point, is inconvenient to transport, and affects rubber. Physical and chemical properties, resulting in unstable adhesion, which is not conducive to rubber production

Method used

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  • Preparation technique of cobalt decanoate by hybrid reaction of cobaltous carbonate and organic acid
  • Preparation technique of cobalt decanoate by hybrid reaction of cobaltous carbonate and organic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 28g of glacial acetic acid, 100g of neodecanoic acid, 12g of pivalic acid, and 92g of cobalt carbonate to a 1000ml four-neck flask with a reflux condenser, a temperature-regulating electric heating mantle, and a vacuum pump in sequence, and control the reaction temperature at 95°C for 3 hours. Heating and drainage, vacuum decompression and drainage, get rid of the water generated by the reaction, add 16g of abietic acid at a temperature of 165°C, react for 1 hour, add 10g of active calcium carbonate at 165°C, and discharge after uniform stirring for 1 hour to obtain Cobalt neodecanoate product, the cobalt content is 20.3%, the appearance is blue-purple.

Embodiment 2

[0034] Add 30g of glacial acetic acid, 102g of neodecanoic acid, 16g of pivalic acid, and 96g of cobalt carbonate to a 1000ml four-necked flask with a reflux condenser, a temperature-regulating electric heating mantle, and a vacuum pump in sequence, and control the reaction temperature at 90°C. The reaction time is 3.5 hours. Heating and draining, vacuum decompressing and draining, removing the water generated by the reaction, adding 12g of abietic acid at a temperature of 160°C, and reacting for 2 hours, adding 8g of active calcium carbonate at a temperature of 160°C, stirring evenly for 1 hour The cobalt neodecanoate product was obtained, with a cobalt content of 20.8% and a blue-purple appearance.

Embodiment 3

[0036] Add 32g of glacial acetic acid, 104g of neodecanoic acid, 15g of pivalic acid, and 93g of cobalt carbonate into a 1000ml four-neck flask with a reflux condenser, a temperature-regulating electric heating mantle, and a vacuum pump in sequence, and control the reaction temperature at 100°C. The reaction time is 3.5 hours. Heating and drainage, vacuum decompression and drainage, get rid of the water generated by the reaction, add 14g of abietic acid at a temperature of 168°C, and react for 2 hours, add 12g of active calcium carbonate at a temperature of 168°C, stir evenly for 1 hour, and put The cobalt neodecanoate product was obtained, with a cobalt content of 20.5% and a blue-purple appearance.

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Abstract

A preparation process for preparing organic cobalt salt compound mainly comprising cobalt neocaprate through the hybrid reaction between cobalt carbonate and organic acid belongs to the organic synthesis technical field. Taking cobalt carbonate as a raw material, the preparation process is characterized in that the process is carried out in turn according to the following steps that (1) taking cobalt carbonate, glacial acetic acid, neodecanoic acid and neopentanoic acid as raw materials, reaction is carried out inside a normal pressure sealed reactor for more than or equal to 3 hours with the temperature controlled between 90 and 100 DEG C; (2) abietic acid is added in the reaction system so as to carry out reaction at a temperature of between 160 and 168 DEG C for more than or equal to 1 hour, thereby displacing glacial acetic acid; then, cobalt neocaprate is generated through excluding displaced glacial acetic acid and water by means of vacuum reaction and filtration; and (3) activated calcium carbonate is added in the reaction system at a temperature of between 160 and 168 DEG C so as to prepare a finished product. Through replacing common cobalt hydroxide by cobalt carbonate to carry out reaction with organic acid, and adding abietic acid tackifier and activated calcium carbonate with amphoteric compound in neodecanoic acid, the preparation process effectively balances the pH degree in the system, thereby effectively preventing the product from metallic corrosion and increasing adhesion level.

Description

technical field [0001] The invention belongs to the technical field of organic synthesis, and in particular relates to a process for preparing cobalt decanoate. Background technique [0002] Cobalt neodecanoate, whose theoretical molecular formula is CH 3 (CH 2 ) 8 CO 2 C O CO 2 (CH 2 ) 8 CH 3 . Cobalt neodecanoate is a highly active adhesion promoter, mainly used for bonding of natural rubber, synthetic rubber or brass, zinc bare copper and brass, zinc plated steel cord, cable, metal plate Promote. It is made from cobalt hydroxide and neodecanoic acid through acid-base salification reaction. The cobalt neodecanoate prepared by this method has a low cobalt content. It is a viscous semi-solid organic cobalt salt at room temperature, and it becomes a fluid at about 60 ° C. It has a low melting point, is inconvenient to transport, and affects rubber. Physical and chemical properties, resulting in unstable adhesion, which is not conducive to rubber production. Cont...

Claims

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Application Information

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IPC IPC(8): C07C53/126C07C51/41
Inventor 逯大成梅明
Owner 逯大成
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