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Novel preparation process of zinc stearate

A preparation process, the technology of zinc stearate, applied in the field of new zinc stearate preparation process, can solve the problem of excessive free acid, and achieve the effect of avoiding exceeding the standard and reducing the production of free acid

Pending Publication Date: 2021-02-09
NANTONG XINBANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to provide a novel preparation process of zinc stearate, which can solve the problem that zinc stearate adopts a conventional melting preparation method to cause many free acids in the product

Method used

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  • Novel preparation process of zinc stearate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A novel preparation process of zinc stearate, the specific preparation process is as follows:

[0027] S1: Add 1 ton of stearic acid into the reactor, heat up to 80°C, after the stearic acid is completely dissolved, add 8kg of saturated solution of zinc acetate into the reactor, and stir evenly;

[0028] S2: Raise the temperature of the reactor to 100°C again, add 148kg of zinc oxide, raise the temperature to 120°C again, keep warm at 120°C, and fully stir for 35 minutes;

[0029] S3: After the reaction is completed, the molten zinc stearate is discharged into the tablet press, and after the tablet is cooled, the flake material enters the jet mill for crushing. After the crushed product is collected by the pulse dust collector, it passes through the automatic packaging machine. Packing and storage; it is detected that the free acid content in zinc stearate is less than 0.15%.

Embodiment 2

[0031] A novel preparation process of zinc stearate, the specific preparation process is as follows:

[0032] S1: Add 1 ton of stearic acid into the reactor, heat up to 90°C, after the stearic acid is completely dissolved, add 3kg of zinc peroxide and 1kg of water into the reactor, and stir evenly;

[0033] S2: raise the temperature of the reactor to 110°C again, add 148kg of zinc oxide, raise the temperature to 125°C again, keep warm at 125°C, and fully stir for 40 minutes;

[0034] S3: After the reaction is completed, the molten zinc stearate is discharged into the tablet press, and after the tablet is cooled, the flake material enters the jet mill for crushing. After the crushed product is collected by the pulse dust collector, it passes through the automatic packaging machine. Packing and storage; it is detected that the free acid content in zinc stearate is less than 0.1%.

Embodiment 3

[0036] A novel preparation process of zinc stearate, the specific preparation process is as follows:

[0037] S1: Add 1 ton of stearic acid into the reactor, heat up to 90°C, after the stearic acid is completely dissolved, add 4.5 kg of saturated zinc chloride solution into the reactor, and stir evenly;

[0038] S2: raise the temperature of the reactor to 110°C again, add 148kg of zinc oxide, raise the temperature to 125°C again, keep warm at 125°C, and fully stir for 40 minutes;

[0039] S3: After the reaction is completed, the molten zinc stearate is discharged into the tablet press, and after the tablet is cooled, the flake material enters the jet mill for crushing. After the crushed product is collected by the pulse dust collector, it passes through the automatic packaging machine. wrap up and store. It was detected that the content of free acid in zinc stearate was less than 0.2%.

[0040] On the whole, the content of free acid in zinc stearate prepared by this scheme i...

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Abstract

The invention relates to a novel preparation process of zinc stearate, which is characterized by comprising the following steps of S1, adding stearic acid into a reaction kettle, heating to 80-90 DEGC, adding a zinc salt solution into the reaction kettle after the stearic acid is completely dissolved, and uniformly stirring, S2, raising the temperature of the reaction kettle to 100-110 DEG C again, adding zinc oxide, raising the temperature to 120-125 DEG C again, keeping the temperature at 120-125 DEG C, and fully stirring for 35-40 minutes, and S3, after the reaction is completed, discharging, cooling, tabletting, crushing and packaging to obtain a finished product. According to the process, a saturated solution of zinc salt is adopted to replace an acidic substance added in conventional zinc stearate melting method production as a catalyst, the zinc salt is adopted as the catalyst for zinc stearate melting method production, a saturated solution is adopted as a zinc salt solution,and zinc stearate is generated by adding zinc ions in the zinc salt and combining the zinc salt with stearic acid. In the way, generation of free acid can be reduced, and standard exceeding of the free acid is avoided.

Description

technical field [0001] The invention relates to the technical field of preparation of zinc stearate, in particular to a novel preparation process of zinc stearate. Background technique [0002] Zinc stearate is used in the pharmaceutical industry, in the formulation of curing oils and lubricants, and also as a paint drier. It is used in the processing of PVC and rubber non-toxic products. It has a synergistic effect with calcium stearate and barium stearate, which can effectively improve the light and heat stability of PVC and rubber products. The amount used in PVC processing is usually <1 part; used for rubber Product touch agent, also used in the manufacture of PP, PE, PS, EPS polymerization additives and pencil lead, the general dosage is 1~3 parts. [0003] Zinc stearate can be used as heat stabilizer; lubricant; grease; accelerator; thickener, etc. For example, it can generally be used as a heat stabilizer for PVC resin. Used for general industrial transparent pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/41C07C53/126
CPCC07C51/412C07C53/126
Inventor 王霄林陆爱梅
Owner NANTONG XINBANG CHEM
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