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Process for preparing organic cobalts mixed salt finished product with cobalt neodecanoate as main raw material

A technology of cobalt neodecanoate and mixed salt, which is applied in the field of organic chemical industry, can solve the problems of unfavorable rubber production, inconvenient transportation, low melting point, etc., and achieve the effects of improving adhesion, balancing pH, and weakening free acidity

Active Publication Date: 2006-10-11
JIANGYIN SANLIANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low melting point, unable to become solid at room temperature, inconvenient for transportation and unfavorable for rubber production

Method used

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  • Process for preparing organic cobalts mixed salt finished product with cobalt neodecanoate as main raw material
  • Process for preparing organic cobalts mixed salt finished product with cobalt neodecanoate as main raw material
  • Process for preparing organic cobalts mixed salt finished product with cobalt neodecanoate as main raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In a 500ml three-necked flask with a moisture collector, a back distillation condenser, and a vacuum pump, add 38g of propionic acid, 160g of neodecanoic acid, and 85g of cobalt hydroxide, and control the reaction temperature at 150-170°C for 2 hours. Emit waste water, then add 40 g of pivalic acid and stir, control the heating temperature at 200° C. and keep the reaction for 1 hour, and emit waste water and propionic acid. Then add 2.5g of calcium metaborate, control the temperature at 190-200°C, stir evenly for half an hour and discharge. The cobalt content of the reaction product: 20.40%, the melting point: 88°C, and the appearance is blue-purple solid.

Embodiment 2

[0036] In a 1000ml three-necked flask with a moisture collector, a back distillation condenser, and a vacuum pump, add 78g of propionic acid, 317g of neodecanoic acid, and 167g of cobalt hydroxide, and control the reaction temperature at 170-190°C. The reaction time is 2.5 hours. Release waste water, then add 82g of pivalic acid and stir, control the heating temperature at 190-195°C and keep it warm for 1 hour, release waste water and propylene, then add 7.0g of calcium metaborate, control the temperature at 190-200°C, and stir evenly for half an hour After discharging, the cobalt salt of the reaction product contains 20.45% cobalt, melting point: 92°C, and appears as a blue-purple solid.

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Abstract

The invention relates to a method for preparation of finished goods of organic cobalt composite salts, of which the cobalt neocaprate is the main substance. The method is characterized in that it selects cobalt hydroxide and organic acid as raw materials and performs acid-base salt reaction and acid replacement reaction to obtain the product. The method includes: selecting cobalt hydroxide, ethylformic acid and neocaprate as raw materials and reacting to prepare composite salts of cobalt propionate and cobalt neocaprate at a temperature of 150 DEG C-190 DEG C for more than 2 hours in an atmosphere airtight container; adding neopentanoic acid to react for replacement of propanoic acid at a temperature of 190 DEG C-200 DEG C for more than one hour; controlling the temperature between 180 DEG C and 190 DEG C; then adding calcium metaborate to prepare finished goods of organic cobalt composite salts, of which the cobalt neocaprate is the main substance. The product obtained by this invention has a higher cobalt content and fusing point.

Description

Technical field: [0001] The invention relates to a preparation method of an organic cobalt mixed salt product mainly composed of cobalt neodecanoate. 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 COCO 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. The cobalt content of cobalt neodecanoate prepared by this method is only 14.7%, which cannot meet the requirements for rubber production and use. And it is a viscous soft organic cobalt salt at normal temperature, and it becomes a fluid at about 50°C. It has a low melting point and cannot become a solid at r...

Claims

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Application Information

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IPC IPC(8): C08K13/06C08K3/38C08K5/095
Inventor 李明伟徐美华沈进徐胜良
Owner JIANGYIN SANLIANG CHEM
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