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Process for preparation of liquid metal carboxylate

A technology of metal carboxylates and sodium carboxylates, applied in the preparation of carboxylates, etc., can solve the problems of affecting the gloss of products, unable to guarantee removal, shortening the service life, etc., to reduce washing steps, reduce impurity content, and improve transparency. Effect

Inactive Publication Date: 2008-05-28
SHANGHAI HUAYI FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Their post-treatment is to use water to wash and layer the system multiple times. The disadvantage is that the reaction takes a long time, and there is no guarantee that the unreacted and large particles of the reaction by-products in the system can be removed.
The existence of such particles in the system is extremely harmful. First, they will slowly accumulate and become large particles, which will affect the luster of the product after being added to the system; second, they are inorganic metal salts that are very soluble in water. In the hydrophobic system, after the system is cured, it will be dissolved by water once it encounters water, causing small cavities in the system, affecting the appearance of the product and shortening its service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] In a three-neck flask with mechanical stirring, add 40g of tap water, 290g of isooctanoic acid, and 80g of solid sodium hydroxide, start stirring, heat up to 90°C, add 100g of No. 200 solvent oil after 10 minutes, and then add 110g of anhydrous calcium chloride , 100 ℃ of heat preservation for one hour, add modified diatomite 0.5g, after taking out the lower layer of water, filter while hot to obtain light yellow transparent liquid 500g, calcium content 7.5%, yield 93.8%, maximum impurity fineness 7 microns.

Embodiment 2

[0017] In a three-neck flask with mechanical stirring, add 40g of tap water, 290g of isooctanoic acid, and 80g of solid sodium hydroxide, start stirring, heat up to 90°C, add 100g of No. 200 solvent oil after 10 minutes, and then add 110g of anhydrous calcium chloride , 100 DEG C of heat preservation for one hour, add modified diatomite 2.5g, remove the lower layer of water, filter while hot to obtain 502g of light yellow transparent liquid, calcium content 7.82%, yield 98.1%, maximum impurity fineness 5 microns.

Embodiment 3

[0019] In a three-neck flask with mechanical stirring, add 40g of tap water, 290g of isooctanoic acid, and 80g of solid sodium hydroxide, start stirring, heat up to 90°C, add 100g of No. 200 solvent oil after 10 minutes, and then add 110g of anhydrous calcium chloride , 100 ℃ of insulation for one hour, add modified diatomite 5g, after taking out the lower layer of water, filter while hot to obtain 500g of light yellow transparent liquid, calcium content 7.89%, yield 98.6%, impurity fineness 4 microns.

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Abstract

The preparation process of liquid metal carboxylate includes the steps of the saponification between carboxylic acid and alkali to produce sodium or potassium carboxylate and the double decoposition reaction between the sodium or potassium carboxylate and inorganic metal salt to produce the liquid metal carboxylate; or includes the direct reaction between carboxylic acid and metal oxide or hydroxide to produce the liquid metal carboxylate. In the reactants, modified diatomite of granularity 5-10 microns, pore size 4-8 microns and amount of 0.1-1 wt% of total reactants and No. 200 solvent oil are added; and the reaction temperature is 80-120 deg.c and reaction time is 20-70 min. After the reaction, the lower layer of water is eliminated and the product is filtered while it is still hot to obtain light yellow transparent liquid metal carboxylate product. The product has low impurity content, raised transparency and stable quality.

Description

technical field [0001] The present invention relates to a kind of preparation method of liquid metal carboxylate. Background technique [0002] Liquid metal carboxylate (Metal carboxylate) is a very important class of fine chemical products, mainly used in paint, ink drier, unsaturated resin accelerator, rubber adhesion accelerator, plastic stabilizer and other fields. [0003] In the prior art, "The Refining of Naphthenic Acid and the Development Research of Its Series Products" (Journal of Wuyi University 2001, 12, P51~54), "The Application and Production of Naphthenates" (Lubricating Oil, 1994, 6, P43-46), "Research and Exploration of Naphthenate Process" (Hubei Chemical Industry, 1996, 2, P31-33) and other disclosed methods are metathesis method and direct method. Their post-treatment adopts the method of washing and layering in the system multiple times with water. The disadvantage is that the reaction takes a long time, and there is no guarantee that the unreacted and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C51/41
Inventor 罗博周
Owner SHANGHAI HUAYI FINE CHEM CO LTD
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