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A kind of preparation method of dibutyltin dilaurate and its products

A technology of dibutyltin cinnamate and dibutyltin dichloride, applied in chemical instruments and methods, tin organic compounds, compounds of elements of Group 4/14 of the periodic table, etc., can solve problems such as low catalytic efficiency

Active Publication Date: 2019-03-22
启东市强强贸易有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, in the prior art, for the synthesis process of dibutyltin dilaurate, the catalytic efficiency is low, so it is very necessary to synthesize a new type of dibutyltin dilaurate through the improvement of the synthesis process, so that it has a relatively good effect on PVC. good thermal stability

Method used

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Examples

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preparation example Construction

[0030] In order to solve the problems of the technologies described above, the first aspect of the present invention provides a kind of preparation method of dibutyltin dilaurate, at least comprise the following steps:

[0031] Add lauric acid, dibutyltin dichloride, and ethanol in sequence to the reactor, wherein the molar ratio between lauric acid, dibutyltin dichloride, and ethanol is 2:1:10, and after stirring evenly, add catalyst, Trimethylolpropane-tris(mercaptopropionate), stirred at 40°C for 30-60 minutes, then added sodium hydroxide solution to adjust the pH of the reaction to 7, and then stirred at 40°C for the reaction 1~3h, after the reaction finishes, obtain the reaction liquid; Then the solvent in the reaction liquid is distilled off, obtains the product, after the product is washed with water, dries to obtain dibutyltin dilaurate; The catalyst is N-(2-ammonia Ethyl)-3-aminopropyltrimethoxysilane modified mesoporous silica.

[0032] The term "N-(2-aminoethyl)-3-...

Embodiment 1

[0080] Present embodiment 1 provides a kind of dibutyltin dilaurate heat stabilizer, the preparation method of described dibutyltin dilaurate at least comprises the following steps:

[0081] Add lauric acid, dibutyltin dichloride, and ethanol in sequence to the reactor, wherein the molar ratio between lauric acid, dibutyltin dichloride, and ethanol is 2:1:10, and after stirring evenly, add catalyst, Trimethylolpropane-tris(mercaptopropionate), at 40°C, stirred and reacted for 30min, then added sodium hydroxide solution to adjust the pH value of the reaction to 7, and then stirred at 40°C for 1h, After the reaction, a reaction solution is obtained; then the solvent in the reaction solution is distilled off to obtain a product, and the product is washed with water and dried to obtain dibutyltin dilaurate;

[0082] The catalyst is N-(2-aminoethyl)-3-aminopropyltrimethoxysilane modified mesoporous silica.

[0083] In the catalyst, the weight ratio between N-(2-aminoethyl)-3-amino...

Embodiment 2

[0094] Present embodiment 2 provides a kind of dibutyltin dilaurate heat stabilizer, the preparation method of described dibutyltin dilaurate at least comprises the following steps:

[0095] Add lauric acid, dibutyltin dichloride, and ethanol in sequence to the reactor, wherein the molar ratio between lauric acid, dibutyltin dichloride, and ethanol is 2:1:10, and after stirring evenly, add catalyst, Trimethylolpropane-tris(mercaptopropionate), at 40°C, stirred and reacted for 30min, then added sodium hydroxide solution to adjust the pH value of the reaction to 7, and then stirred at 40°C for 1h, After the reaction, a reaction solution is obtained; then the solvent in the reaction solution is distilled off to obtain a product, and the product is washed with water and dried to obtain dibutyltin dilaurate;

[0096] The catalyst is N-(2-aminoethyl)-3-aminopropyltrimethoxysilane modified mesoporous silica.

[0097] In the catalyst, the weight ratio between N-(2-aminoethyl)-3-amino...

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PUM

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Abstract

The invention belongs to the field of synthesis and relates to a preparation method of dibutyltin dilaurate and a product thereof. The preparation method of dibutyltin dilaurate at least comprises the following steps that lauric acid, dibutyl stannous chloride and ethanol are sequentially added into a reactor, wherein the mole ratio of the lauric acid to the dibutyl stannous chloride to the ethanol is 2 to 1 to 10, a catalyst and trimethylolpropane-tri(thiohydracrylic acid) are sequentially added after even stirring, stirring reaction is performed at the temperature of 40 DEG C for 30-60 minutes, a sodium hydroxide solution is added, the pH value of the reaction is regulated to 7, then stirring reaction is performed at the temperature of 40 DEG C for 1-3 hours, and a reaction solution is obtained after reaction is completed; the solvent in the reaction solution is distilled off to obtain a product, the product is washed and then dried to obtain the dibutyltin dilaurate. The catalyst is N-(2-aminoethyl)-3-aminopropyl trimethoxy silane modified mesoporous silica.

Description

technical field [0001] The invention belongs to the field of synthesis, and relates to a preparation method of dibutyltin dilaurate and a product thereof. Background technique [0002] Polyvinyl chloride (PVC) is one of the five general-purpose plastics in the world, with a huge output and a wide range of applications. Polyvinyl chloride (PVC) plastic has the advantages of self-extinguishing, flame retardant, wear-resistant, high strength, good electrical insulation and chemical stability, etc., and it is cheap and widely used. Heat stabilizers must be added to prevent PVC from discoloring and degrading. Correspondingly, the development of PVC heat stabilizers is closely related to the development of polyvinyl chloride products. [0003] Organotin heat stabilizer is one of the PVC heat stabilizers with high thermal stability efficiency and promising development prospects. It is highly efficient, low (non-)toxic, and is especially suitable for transparent and hygienic produ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/22C08L27/06C08L67/00C08L91/00C08K5/57
CPCC07F7/2208C08L27/06C08L2201/08C08L2205/03C08L67/00C08L91/00C08K5/57
Inventor 杨学强顾周全汤华胡为莉
Owner 启东市强强贸易有限公司
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