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Method for synthesizing cobalt neocaprate through water solvent

A technology of cobalt neodecanoate and a synthesis method, which is applied in the preparation of carboxylate, organic chemistry, etc., can solve the problems of potential safety hazards, unknown, and high production costs, so as to improve product quality, maintain stability, and reduce cobalt source costs. Effect

Inactive Publication Date: 2010-08-18
镇江迈特化工新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional process not only has potential safety hazards in the production and use of the product, but also affects the quality and export of the product due to the residual solvent.
(2) The production cost of cobalt hydroxide as the cobalt source is relatively high, and part of Co(II) cannot be oxidized to Co(III) during the storage, transportation and production process. Since Co(III) cannot react with organic acids, it will Become impurities (insoluble) into the product and affect product quality
After checking the literature of the prior art, there are no related reports and patent applications at home and abroad

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0014] Add 15g of propionic acid, 16g of pivalic acid, 67g of neodecanoic acid and 45g of basic cobalt carbonate in the there-necked bottle, then inject 90g of water, start the electric mixer, and fully stir at a speed of 500 rpm. React for 7 hours, and finally remove the product moisture and unreacted organic acid by distillation, and the product can be discharged. The distillation temperature is 160°C. The appearance of the product is blue-purple, and the cobalt content is 20.5%. The softening point is 89°C, and the insoluble matter in heptane is 0.039%.

example 2

[0016] Add 15g of propionic acid, 16g of pivalic acid, 67g of neodecanoic acid, and 45g of basic cobalt carbonate into the three-necked bottle, then inject 90g of water, start the electric mixer, and fully stir at a speed of 500 rpm. Reaction 5h. Finally, the product water and unreacted organic acid can be removed by distillation, and the distillation temperature is 180°C. The appearance of the product is blue-purple, and the cobalt content is 20.6%. The softening point is 89°C, and the insoluble matter in heptane is 0.041%.

example 3

[0018] Add 13g of propionic acid, 20g of pivalic acid, 65g of neodecanoic acid, and 45g of basic cobalt carbonate into the three-necked bottle, then inject 90g of water, start the electric mixer, and fully stir at a speed of 500 rpm. Reaction 5h. Finally, the product water and unreacted organic acid can be removed by distillation, and the distillation temperature is 180°C. The appearance of the product is blue-purple, and the cobalt content is 18.2%. The softening point is 80°C, and the insoluble matter in heptane is 0.046%.

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Abstract

The invention relates to a method for synthesizing cobalt neocaprate through a water solvent, which relates to a processing aid used in rubber product production. The method is characterized by comprising the following steps: adding 40 to 45 parts by mass of basic cobaltous carbonate, 13 to 15 parts by mass of propionic acid, 16 to 20 parts by mass of neopentanoic acid and 65 to 67 parts by mass of neodecanoic acid into 90 to 100 parts by mass of solvent water, stirring and simultaneously carrying out a reflow reaction, wherein the reflow reaction temperature is 120 to 130 DEG C, and the reflow reaction time is 4 to 8 hours; obtaining a mixed salt of propionic acid-neopentanoic acid-cobalt neocaprate after the reaction is finished; and finally removing the solvent water and the unreacted organic acid through a distillation method to obtain the cobalt neocaprate. Water is used for replacing organic solvents with larger toxicity, such as toluene, dimethylbenzene and the like in the preparation process, and the basic cobaltous carbonate is used for replacing cobalt hydroxide, thereby not only the production process is green and environment-friendly, but also the production cost is greatly lowered, the stability of Co (II) is effectively kept, the product quality is enhanced, and the method has higher economic benefit and social benefit.

Description

technical field [0001] The invention relates to a preparation method of cobalt neodecanoate, a processing aid used in the production of rubber products. It belongs to the field of organic chemical technology. Background technique [0002] Cobalt neodecanoate is a dark blue glass body with a fixed composition formed by the reaction of three to four carboxylic acids with different carbon chain lengths and cobalt alkali. It is one of the main adhesion promoters for bonding between steel wire and rubber at present. 1. It is mainly used in the production of rubber-metal composite products such as steel radial tires, rubber steel wire conveyor belts, and steel braided steel rubber hoses. With the rapid development of the automobile industry and transportation industry, traditional bias tires are gradually being replaced by radial tires with excellent performance. The excellent mechanical properties of radial tires are mainly due to their strong belt layer and soft carcass. Theref...

Claims

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Application Information

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IPC IPC(8): C07C53/126C07C53/122C07C51/41
Inventor 陆金城柯振华贺敏强陈西农
Owner 镇江迈特化工新材料有限责任公司
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