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Preparation method of methyltin neodecanoate

A technology of methyl tin neodecanoate and monomethyl tin neodecanoate, which is applied in chemical instruments and methods, tin organic compounds, compounds of group 4/14 elements of the periodic table, etc., and can solve the problem of single product components, etc. problems, to achieve the effect of wide application range, simple production equipment and mild reaction conditions

Pending Publication Date: 2020-10-20
云南锡业锡化工材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no public literature about methyl tin neodecanoate and its preparation method at home and abroad, and only a small amount of relevant information can be found on the Internet, such as Quzhou Jianhua Dongxu Auxiliary Co., Ltd. about dimethyl dineodecanoate The product introduction of tin only mentions that dimethyl tin dineodecanoate is "made from the dehydrochlorination reaction of dimethyl tin dichloride and neodecanoic acid", without any detailed description of the specific preparation process, and the product group There is only one kind of dimethyl tin dineodecanoate, and the scope of application has certain limitations.

Method used

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  • Preparation method of methyltin neodecanoate
  • Preparation method of methyltin neodecanoate
  • Preparation method of methyltin neodecanoate

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A kind of methyl tin neodecanoate, its component is three neodecanoic acid monomethyl tin, chemical formula is CH 3 Sn(OOCC 9 h 19 ) 3 , the structural formula is as follows:

[0027]

[0028] The preparation method of methyl tin neodecanoate is as follows:

[0029] (1) Weigh 600 g of monomethyl tin trichloride aqueous solution with a tin content of 22.04%, a chlorine content of 19.53%, and 581.00 g of neodecanoic acid with a purity of 99.0%, put it into the reactor at one time, and start stirring;

[0030] (2) drip ammoniacal liquor in reactor and react, to remove the HCl that above-mentioned step (1) reacts to generate, promote, improve the reaction completion degree of step (1), and reduce the acid value of product, improve product quality. Control the reaction temperature at about 75°C, and stop adding the ammonia solution dropwise when the pH value is 8.0;

[0031] (3) Add 300g of water into the reaction kettle for washing, and control the temperature of th...

Embodiment 2

[0035] A kind of methyl tin neodecanoate, its component is dimethyl tin dineodecanoate, chemical formula is (CH 3 ) 2 Sn(OOCC 9 h 19 ) 2 , the structural formula is as follows:

[0036]

[0037] The preparation method of methyl tin neodecanoate is as follows:

[0038] (1) Weigh 200 g of dimethyl tin dichloride aqueous solution with a tin content of 25.42%, a chlorine content of 15.32%, and 150.42 g of neodecanoic acid with a purity of 99.0%, put it into the reaction kettle at one time, and start stirring;

[0039] (2) drip ammonia water to react, control the reaction temperature at about 60°C, when the pH value is 8.0, stop dripping ammonia water;

[0040] (3) Add 100g of water into the reaction kettle for washing, and control the temperature of the material at 50°C to 55°C; stop stirring after washing, and let stand to separate phases;

[0041] (4) After the organic phase is fully separated from the water, the organic phase is transferred to the distillation flask wh...

Embodiment 3

[0044] A kind of methyl tin neodecanoate, its component is trimethyl tin neodecanoate and dimethyl tin neodecanoate, the preparation method of described methyl tin neodecanoate is as follows:

[0045] (1) Weigh 100 g of a 10 / 90 type methyl tin chloride aqueous solution with a tin content of 25.89%, a chlorine content of 16.25%, and 80.56 g of neodecanoic acid with a purity of 99.0%, put it into the reactor at one time, and start stirring;

[0046] (2) drip ammonia water to react, control the reaction temperature at 30°C to 35°C, when the pH value is 7.0, stop dripping ammonia water;

[0047] (3) Add 150g of water to the reaction kettle for washing, and control the temperature of the material at about 60°C; stop stirring after washing, and let stand to separate phases;

[0048] (4) After the organic phase is fully separated from the water, the organic phase is transferred to the distillation flask while it is still hot for vacuum distillation, and the distillation temperature i...

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Abstract

The invention discloses a preparation method of methyltin neodecanoate. The methyltin neodecanoate is prepared from monomethyltin trineodecanoate or dimethyltin dineodecanoate or a mixture of the monomethyltin trineodecanoate and dimethyltin dineodecanoate, the chemical formula of the monomethyltin trineodecanoate is CH3Sn(OOCC9H19)3, and the chemical formula of the dimethyltin dineodecanoate is (CH3)2Sn(OOCC9H19)2. The methyltin neodecanoate is prepared by taking neodecanoic acid, an aqueous methyl tin chloride solution and an alkali liquor as reaction raw materials and adopting a one-pot method. The preparation method has the advantages of simple production equipment, mild reaction conditions, controllable process, simple operation, stable product quality, wide application range and thelike.

Description

technical field [0001] The invention belongs to the technical field of synthesis of organic tin chemical products, and in particular relates to a preparation method of methyl tin neodecanoate. Background technique [0002] Methyl tin neodecanoate is a light yellow transparent viscous liquid with a wide range of applications. It can be used as an efficient catalyst in the manufacture of polyurethane foams, coatings, adhesives and sealants; used in bimolecular polyurethanes, polyesters, It is a hardening catalyst for nitro paint, ink and other coatings and temperature-curing coatings, with good oxidation resistance; it is used as a catalyst and drier for the production of polyurethane plastics, polyurethane coatings, and silicone rubber; it can also be used as a catalyst in the processing of PVC plastics Heat stabilizers, etc. [0003] At present, there is no public literature about methyl tin neodecanoate and its preparation method at home and abroad, and only a small amount...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/22
CPCC07F7/2224C07F7/2296
Inventor 陈树郭应辉易强顺胡艳华胡洋李祥彦张超杨飞张权议王丽媛
Owner 云南锡业锡化工材料有限责任公司
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