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Non-corrosive organic tin catalyst as well as preparation method and application thereof

A catalyst, organotin technology, applied in the direction of tin organic compounds, etc., can solve problems such as corrosion

Inactive Publication Date: 2015-04-08
兆舜科技(广东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the corrosive problem of the above-mentioned existing organotin catalysts such as dibutyltin dilaurate catalyst, the invention provides a non-corrosion organotin catalyst and a preparation method thereof

Method used

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  • Non-corrosive organic tin catalyst as well as preparation method and application thereof
  • Non-corrosive organic tin catalyst as well as preparation method and application thereof
  • Non-corrosive organic tin catalyst as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Add 249 parts of dibutyltin oxide powder into the reaction kettle, start stirring, and pass N 2 Exhaust the air for 30 minutes, then adjust the temperature to 100°C, add 260 parts of ethyl acetoacetate dropwise according to the ratio of alkyl tin oxide and chelating agent to 1:1.04 by weight, and then react at 140°C for 3 hours, The product is obtained by cooling down.

Embodiment 2

[0029] Add 249 parts of methyl tin oxide powder into the reaction kettle, start stirring, and discharge the air through helium on the surface of the powder for 30 minutes, then adjust the temperature to 95°C, according to the weight of alkyl tin oxide and chelating agent Add 249 parts of acetylacetone dropwise at a ratio of 1:1, then react at 145°C for 2 hours, and cool down to obtain the product.

Embodiment 3

[0031] Will 249 parts C 18 Put the alkyl tin oxide powder into the reaction kettle, start stirring, and pass argon gas on the surface of the powder for 30 minutes to discharge the air, then adjust the temperature to 105°C, according to the ratio of alkyl tin oxide and chelating agent in parts by weight to 1 : 1.2 Add dropwise the mixture of 298.8 parts of acetylacetone and ethyl acetoacetate, then react at 135°C for 6 hours, and cool down to obtain the product.

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Abstract

The invention provides a non-corrosive organic tin catalyst as well as a preparation method and application thereof. The catalyst is prepared from an oxide of alkyl tin and a chelating agent at the ratio of 1 to (1-1.2) in parts by weight. The preparation method comprises the following steps: (1) adding the oxide of alkyl tin to a reaction kettle as a raw material, stirring, filling protective gas and regulating temperature; and (2) dropping the chelating agent for reaction after the temperature achieves a requirement, and cooling after the reaction so as to obtain a finished product. The organic tin catalyst disclosed by the invention is synthesized by virtue of the non-corrosive chelating agent and the oxide of alkyl tin, so that the problem that an organic tin catalyst is corrosive to metal structures or electronic components in the prior art is solved.

Description

technical field [0001] The invention belongs to the field of organic synthesis, and in particular relates to a non-corrosion organotin catalyst as well as its preparation method and application. Background technique [0002] RTV silicone rubber, no matter it is one-component or two-component, when preparing the product, a small amount of organotin should be added as a catalyst. The commonly used organotin catalyst is: R 1 n Sn(OCOR 2 ) 2 , where R 1 for C 4 h 9 or C 8 h 17 , R 2 for CH 3 、C 7 h 15 or C 11 h 23 etc. It can also be an oxide of alkyl tin, but the most commonly used is dibutyl tin dilaurate (C 4 h 9 ) 2 Sn(OOCC 11 h 23 ) 2 . [0003] Patent CN102516544A discloses a preparation method of dibutyltin dilaurate catalyst, including the steps of: feeding lauric acid and dibutyltin oxide, stirring and heating, when the temperature rises to 50°C, the reaction system starts to have negative pressure ;Continue heating, raise the temperature to 80°C-88...

Claims

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Application Information

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IPC IPC(8): C08G77/08C07F7/22
Inventor 黄永军翁祝强李彬彬
Owner 兆舜科技(广东)有限公司
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