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The preparation method of zinc lauryl mercaptide

A technology of dodecyl mercaptan and zinc salt, applied in the chemical field, can solve the problems of unfavorable industrial production, difficult reaction control, and high cost of raw materials, and achieve the effects of improving utilization rate, easy control, and improving yield

Active Publication Date: 2020-05-22
MATRIX GUANGZHOU CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The raw material cost of this method is higher, and the operation is complicated, and the reaction is difficult to control, which is unfavorable for industrial production.

Method used

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  • The preparation method of zinc lauryl mercaptide
  • The preparation method of zinc lauryl mercaptide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Add 13.6g of anhydrous zinc chloride solid powder, add 200g of deionized water and 5g of anhydrous ethanol, stir evenly, make the anhydrous zinc chloride completely dissolve to colorless and transparent, the heating temperature is 100 ℃, use a feeding pump to drip twelve Alkyl mercaptan is added to the aqueous alcohol mixed solution of zinc chloride, 0.1 g of catalyst triethylamine is added, and a colorless and transparent solution is obtained after the reaction for 3 hours. After cooling and standing, the oil-water layer was separated, the water layer was separated, and the remaining deionized water was filtered under reduced pressure to obtain a colorless and transparent colloid. Collect the colloid, add 3 g of ethanol at 50°C, and add a small amount of solid crystal seed of zinc dodecyl mercaptan, and leave it to continue drying for 24 to 48 hours, then a white solid is precipitated, and the solid product is washed once with water and washed with alcohol. Once dried,...

Embodiment 2

[0046]Add 18.3 g of anhydrous zinc acetate solid powder, add 220 g of deionized water and 6 g of anhydrous ethanol, stir evenly, and make the anhydrous zinc chloride completely dissolve to colorless and transparent, the heating temperature is 70 ° C, and the dodecane is dripped with a feeding pump. 0.25 g of catalyst triethylamine was added to the hydroalcoholic mixed solution of zinc chloride from base mercaptan to zinc chloride, and a colorless and transparent solution was obtained after the reaction for 5 h. After cooling and standing, the oil-water layer was separated, the water layer was separated, and the remaining deionized water was filtered under reduced pressure to obtain a colorless and transparent colloid. The post-treatment method was the same as that of Example 1, and the obtained solid product was 46.5 g with a yield of 98.7%.

[0047] Elemental analysis of zinc was performed by ICP, and sulfur was analyzed by a titrator. The measured results were: Zn%: 13.31%, ...

Embodiment 3

[0049] Add 29.8 g of zinc nitrate hexahydrate solid powder, add 180 g of deionized water and 10 g of anhydrous ethanol, stir evenly, make the anhydrous zinc chloride completely dissolve to colorless and transparent, the heating temperature is 70 ° C, and the dodecane is dripped with a feeding pump. base mercaptan to the water-alcohol mixed solution of zinc chloride, add catalyst triethylamine 0.5g, and react for 8h to obtain a colorless and transparent solution. After cooling and standing, the oil-water layer was separated, the water layer was separated, and the remaining deionized water was filtered under reduced pressure to obtain a colorless and transparent colloid. The post-treatment method was the same as that of Example 1, and the obtained solid product was 46.5 g with a yield of 98.7%.

[0050] Elemental analysis of zinc was carried out by ICP, and sulfur was carried out by titrator. The measured results were: Zn%: 13.51%, S%: 13.23%, and theoretical Zn%: 13.80%, S%: 13...

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Abstract

The invention relates to a preparation method of zinc dodecylthiol. The preparation method comprises the following steps: mixing zinc salt, dodecylthiol, water, an auxiliary agent and a catalyst, stirring at 50 DEG C to 100 DEG C for 0.5-8 h, and then standing for stratification; taking an oil layer for cooling and precipitating the solid to obtain zinc dodecylthiol; the auxiliary agent is a water-miscible organic solvent, with the volume ratio of the auxiliary agent to water of 1: (10-100); and the catalyst is an alkalescent catalyst. The preparation method greatly reduces the difficulty of the reaction operation under the premise of ensuring the yield and purity of the product, with simple and convenient post-treatment, and does not require special instruments and operations, which is suitable for industrial production applications. In addition, the preparation method has mild reaction conditions, the preparation method is of relatively high safety when being applied in industrial production, water is used as the primary solvent, and the preparation method is basically pollution-free and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a preparation method of zinc dodecyl mercaptan. Background technique [0002] Polyvinyl chloride (PVC) is widely used in construction, packaging, communications, chemical and other industries due to its superior properties such as low cost, corrosion resistance, and flame retardancy. Its output has jumped to the second place in the world among the five general-purpose plastics. In the process of processing, the heat stabilizer can effectively improve the thermal stability of PVC and inhibit its thermal degradation. And the operation is simple, the cost is low, and the effect is good. [0003] Heat stabilizer is one of the important auxiliaries in PVC processing. The best and most used heat stabilizer is lead salt heat stabilizer, followed by organic tin, metal soap, organic antimony and other heat stabilizers. With the increasing awareness of environmental protection,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C321/04C07C319/12C08K5/37C08L27/06
CPCC07C319/12C08K5/37C08L2201/08C07C321/04C08L27/06
Inventor 易立群田晓华邓广兴
Owner MATRIX GUANGZHOU CHEM CORP