Preparation method for high-stability cobalt neocaprate mixed salt

A cobalt neodecanoate, high stability technology, applied in the direction of non-polymer adhesive additives, adhesive additives, etc., can solve the problems of affecting the adhesion effect of rubber and steel cords, the decrease of cobalt content, and the increase of insoluble matter , to achieve the effects of increased content, reduced acidity, improved dispersion and stability

Active Publication Date: 2015-07-22
JIANGYIN SANLIANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, calcium metaborate is insoluble in tetrahydrofuran, which increases the insoluble matter in the system and the impurities
In addition, after 3-4 months of storage in the prepared product, the cobalt content drops significantly, making the cobalt content lower than the minimum critical point of control, thereby affecting the adhesion effect of rubber and steel cords

Method used

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  • Preparation method for high-stability cobalt neocaprate mixed salt
  • Preparation method for high-stability cobalt neocaprate mixed salt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Step 1. Salt formation reaction

[0041] Put 27kg of cobalt hydroxide, 12kg of propionic acid and 45kg of neodecanoic acid into a sealed container at normal pressure, the temperature is 175°C~185°C, and the reaction time is 2.5 hours;

[0042] Step 2, acid displacement reaction

[0043] Add 18kg of isooctanoic acid and 6kg of stearic acid to the above reaction system, control the temperature at 190°C~200°C, and take 1.5 hours to replace propionic acid;

[0044] Step 3: Finished product

[0045] In the reaction system of step 2, the temperature is controlled at 200-210° C., and 7 kg of cobalt hydroxide is added as an auxiliary agent to prepare a high-stability cobalt neodecanoate mixed salt. Stir evenly for half an hour before discharging.

Embodiment 2

[0047] Step 1. Salt formation reaction

[0048] Put 25kg of cobalt hydroxide, 10kg of propionic acid and 50kg of neodecanoic acid into a sealed container at normal pressure, the temperature is 175°C~185°C, and the reaction time is 2 hours;

[0049] Step 2, acid displacement reaction

[0050] Add 15kg of isooctanoic acid and 5kg of stearic acid to the above reaction system, control the temperature at 190°C~200°C, and take 1.5 hours to react to replace propionic acid;

[0051] Step 3: Finished product

[0052] In the reaction system of step 2, the temperature is controlled at 200-210°C, and 5 kg of cobalt hydroxide is added as an auxiliary agent to prepare a highly stable cobalt neodecanoate mixed salt, and the mixture is stirred evenly for half an hour before discharging.

Embodiment 3

[0054]Step 1. Salt formation reaction

[0055] Put 28kg of cobalt hydroxide, 15kg of propionic acid and 50kg of neodecanoic acid into a sealed container at normal pressure, the temperature is 175°C~185°C, and the reaction time is 2.5 hours;

[0056] Step 2, acid displacement reaction

[0057] Add 20kg of isooctanoic acid and 8kg of stearic acid to the above reaction system, control the temperature at 190°C~200°C, and take 2 hours to react to replace propionic acid;

[0058] Step 3: Finished product

[0059] In the reaction system of step 2, the temperature is controlled at 200-210° C., and 8 kg of cobalt hydroxide is added as an auxiliary agent to prepare a high-stability cobalt neodecanoate mixed salt. Stir evenly for 1 hour before discharging.

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Abstract

The invention relates to a preparation method for high-stability cobalt neocaprate mixed salt. The preparation method is characterized by comprising the following steps: 1 salt forming reaction, to be specific, adopting a mixed acid of cobalt hydroxide, propanoic acid and neodecanoic acid as a raw material, reacting for greater than or equal to 2 hours at the temperature of 150-190 DEG C to generate a mixed salt of cobalt propionate and cobalt neocaprate; 2 acid replacement reaction, to be specific, adding isocaprylic acid and stearic acid into the reaction system in the step 1, reacting through controlling the temperature to be 190-200 DEG C and the time to be greater than or equal to 1 hour for replacement of the propanoic acid; 3 finished product preparation, to be specific, in the reaction system in the step 2, controlling the temperature to be 200-210 DEG C, and adding cobalt hydroxide as an auxiliary agent, so as to prepare the high-stability cobalt neocaprate mixed salt. The prepared product has better bonding performance, higher ageing resistance and good stability.

Description

technical field [0001] The invention relates to a preparation method of highly stable cobalt neodecanoate mixed salt. It belongs to the field of organic chemical technology. Background technique [0002] Cobalt neodecanoate, its 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 natural rubber, synthetic rubber or these glues and brass, zinc, bare copper and brass or zinc-plated steel cords, ropes, metal plates adhesion promotion. It is made from cobalt hydroxide and neodecanoic acid through acid-base salt formation reaction. In order to achieve a better adhesion effect, the performance indicators of cobalt neodecanoate mixed salt require the control range to be: cobalt content 20.5±0.5%, melting point: 80-110°C, heating loss at 105°C≤2.0. The level of cobalt content directly affects the adhesion between rubber and steel cords. When the cobalt content is higher...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/098C08K3/22C09J11/06C09J11/04
Inventor 徐京海陶秀军严北菊
Owner JIANGYIN SANLIANG CHEM
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