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Composite cobalt salt bonding promoter and preparation method thereof

A technology of adhesion promoter and composite cobalt salt, which is applied in carboxylate preparation, organic chemistry, etc., can solve the problems of high temperature, high energy consumption, low solubility, etc., achieve high economic and social benefits, and improve reaction efficiency , the effect of cobalt content stabilization

Active Publication Date: 2015-05-13
GEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Inevitably, this method has the following disadvantages: the saponification reaction sodium soap gelatinization energy is large, the solubility is small, the solution is viscous, it is easy to generate acidic soap, and it is also easy to be separated out so that the reactivity is reduced. For metal soap products, the reaction must be carried out at a very low concentration, which leads to the problems of low production efficiency and large water consumption in the metathesis process
In the raw material for preparing organic cobalt salt adhesion promoter, the stearic acid of industrial grade is the mixture of straight-chain octadecyl saturated fatty acid and hexadecanyl saturated fatty acid, and the acidity is relatively weak, and is used for the preparation of cobalt stearate The temperature required in the process is high, and the energy consumption is large
On the other hand, the cobalt content in cobalt stearate currently circulating in the market is between 9.0 and 9.6, and the cobalt content varies greatly, resulting in unstable product quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for preparing composite cobalt salt adhesion promoter, comprising the following steps:

[0027] (1) Preparation of composite sodium salt solution: take stearic acid and capric acid in a mass ratio of 10:1 and mix them, and add the organic acid mixture to 95% of In industrial ethanol, the volume-to-mass ratio of 95% industrial ethanol and organic acid mixture is 5: 1. After the organic acid mixture is completely dissolved, add dropwise a concentration of 10g / L sodium hydroxide solution (in terms of pure sodium) to adjust the solution When the pH value reaches 7.5, a compound sodium salt solution is obtained;

[0028] (2) Preparation of cobalt-containing solution: get inorganic soluble cobalt salt (cobalt chloride) and dissolve it in water, and prepare a cobalt-containing solution (in terms of pure cobalt) whose concentration is 30g / L;

[0029] (3) Compound cobalt salt is prepared by metathesis reaction: the temperature of the compound sodium salt solution descr...

Embodiment 2

[0033] A method for preparing composite cobalt salt adhesion promoter, comprising the following steps:

[0034] (1) Preparation of compound sodium salt solution: take stearic acid and capric acid in a mass ratio of 15:1 and mix them, and add the organic acid mixture to 95% of In industrial ethanol, the volume-to-mass ratio of 95% industrial ethanol and organic acid mixture is 8: 1, after the organic acid mixture dissolves completely, drop the sodium hydroxide solution (in pure sodium amount) that concentration is 57.5g / L to adjust When the pH value of the solution reaches 7.5, a compound sodium salt solution is obtained;

[0035] (2) Preparation of cobalt-containing solution: get inorganic soluble cobalt salt (cobalt sulfate) and dissolve it in water to prepare a cobalt-containing solution with a concentration of 30g / L (in terms of pure cobalt);

[0036] (3) Compound cobalt salt is prepared by metathesis reaction: the temperature of the compound sodium salt solution described...

Embodiment 3

[0040] A method for preparing composite cobalt salt adhesion promoter, comprising the following steps:

[0041] (1) Preparation of composite sodium salt solution: take stearic acid and capric acid in a mass ratio of 20:1 and mix them, and add the organic acid mixture to 95% of the organic acid mixture under stirring at 60° C. In industrial ethanol, the volume-to-mass ratio of 95% industrial ethanol and organic acid mixture is 12: 1. After the organic acid mixture is completely dissolved, add dropwise a concentration of 10 g / L of sodium hydroxide solution (in terms of pure sodium) to adjust the solution When the pH value reaches 7.5, a compound sodium salt solution is obtained;

[0042] (2) Prepare cobalt-containing solution: get inorganic soluble cobalt salt (cobalt nitrate) to be dissolved in water, and be mixed with the cobalt-containing solution (in pure cobalt amount) that concentration is 30g / L;

[0043] (3) Compound cobalt salt is prepared by metathesis reaction: the te...

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PUM

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Abstract

The invention provides a composite cobalt salt bonding promoter and a preparation method thereof. The method comprises the following steps of: (1) preparing a composite sodium salt solution; (2) preparing a cobalt-containing solution; and (3) carrying out double-decomposition reaction to prepare a composite cobalt salt. According to the preparation method provided by the invention, two organic acid mixtures with different acidities are compounded to prepare the sodium salt solution, so that the sodium soap gelatination energy of saponification reaction is reduced; ethanol instead of water is used as a solvent, so that the reaction efficiency is improved; compared with traditional method, the preparation method has the advantages that the amount of materials requiring heating in the whole reaction system is reduced, and the energy consumption is reduced; and the produced composite cobalt salt bonding promoter product is stable in cobalt content and has higher economic benefits and social benefits.

Description

technical field [0001] The invention relates to the technical field of organic metal salt synthesis, in particular to a composite cobalt salt adhesion promoter and a preparation method thereof. Background technique [0002] From the perspective of metal-rubber bonding mechanism, as long as it is a cobalt-containing salt, it can improve the adhesion between metal and rubber to varying degrees. Common organic cobalt salt adhesion promoters mainly include cobalt stearate, cobalt naphthenate, cobalt decanoate and cobalt boroacylate. Its preparation methods mainly include double decomposition method and direct method. [0003] Among them, the basic technological process of the metathesis method is: react organic acid and caustic soda in an aqueous medium above 80°C to obtain organic acid sodium salt, then add dilute metal cobalt salt to obtain organic cobalt salt precipitation, wash and dry to obtain the product. The chemical reaction equation involved in the reaction is: [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C53/126C07C51/41C08K5/098C08L21/00
Inventor 刘庄黄旭江张翔闫梨谭翠丽
Owner GEM CO LTD