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Method for preparing titanium 2-hexylhexanoate

A technology of titanium hexanoate and ethylhexanoic acid, which is applied in the direction of titanium organic compounds, can solve problems such as high boiling point of butanol, need for high temperature conditions, and affect product quality, so as to save energy, prevent raw materials from hydrolysis, and prevent raw materials from hydrolysis and side effects

Inactive Publication Date: 2019-05-10
佛山市天宇安贝尔新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Titanium 2-ethylhexanoate is an industrial raw material with great market application value. At present, the common preparation method is to use tetrabutyl titanate as raw material. Tetrabutyl titanate is easily hydrolyzed when exposed to air, and The by-product butanol has a high boiling point, and the reaction requires high temperature conditions; in addition, the reaction by-product butanol will undergo esterification reaction with 2-ethylhexanoic acid, thereby affecting product quality

Method used

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Examples

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Effect test

preparation example Construction

[0013] The preparation method of 2-titanium hexylhexanoate:

[0014] Step S1: Put 2-ethylhexanoic acid into the reactor, and then add isopropyl titanate or tetraethyl titanate, and the reactor is provided with an air inlet, an exhaust outlet and a by-product collector. The reaction molar ratio of isopropyl titanate or tetraethyl titanate to 2-ethylhexanoic acid is between 1: (1-4).

[0015] Step S2: Vacuum filtration to maintain the vacuum environment in the reactor, heating to 90-110°C in stages, stirring and reacting for 10 hours, the reaction generates titanium 2-ethylhexanoate and by-product isopropanol or ethanol, at 90-110°C The isopropanol or ethanol can be fully volatilized, and a condenser is installed in front of the collector to condense and collect by-products.

[0016] Step S3: Feed N2 into the reactor or dry air to discharge the residual gas in the reactor to prepare the finished titanium 2-ethylhexanoate.

Embodiment 1

[0018] The reaction molar ratio of isopropyl titanate and 2-ethylhexanoic acid is 1:3, feed 284g and 432g respectively to the reaction kettle, vacuum filter and heat to 90°C to start stirring reaction for 2h, heat up to 100°C for 4h, 110 ℃ for 4 hours, collect isopropanol, and obtain titanium 2-ethylhexanoate.

Embodiment 2

[0020] The reaction molar ratio of isopropyl titanate and 2-ethylhexanoic acid is 1:2.5, feed 284g and 360g respectively to the reaction kettle, vacuum filter and heat to 90°C to start stirring reaction for 2h, heat up to 100°C for 4h, 110 ℃ for 4 hours, N 2 Discharge the residual gas in the kettle, collect isopropanol, and obtain titanium 2-ethylhexanoate.

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Abstract

The invention discloses a preparation method of titanium 2-hexylhexanoate. The reaction principle is ester exchange reaction, and the reaction raw materials comprise isopropyl titanate or tetraethyl titanate and 2-ethylhexanoic acid. The method comprises the following steps of S1, placing 2-ethylhexanoic acid into a reaction kettle, and then adding isopropyl titanate or tetraethyl titanate, wherein the reaction kettle is provided with an air inlet, an air outlet and a byproduct collector. step S2: carrying out vacuum suction filtration to maintain a vacuum environment in the reaction kettle, heating to the temperature of 90-110 DEG C in stages, carrying out stirring reaction for 10 h, fully volatilizing isopropanol or ethanol, and collecting byproducts; step S3, introducing N2 or dry air into the reaction kettle to discharge residual gas in the kettle so as to prepare the finished product titanium 2-ethylhexanoate. According to the invention, raw material hydrolysis and side reaction can be prevented, isopropanol or ethanol in the titanium 2-ethylhexanoate can be effectively discharged, peculiar smell in the product is removed, and corrosion to equipment in subsequent processing treatment is prevented.

Description

Technical field: [0001] The invention relates to a preparation technology of titanium 2-ethylhexanoate. Background technique: [0002] Titanium 2-ethylhexanoate is an industrial raw material with great market application value. At present, the common preparation method is to use tetrabutyl titanate as raw material. Tetrabutyl titanate is easily hydrolyzed when exposed to air, and The by-product butanol has a high boiling point, and the reaction requires high temperature conditions; in addition, the reaction by-product butanol will undergo an esterification reaction with 2-ethylhexanoic acid, thereby affecting product quality. [0003] Therefore, it has become a need in the industry to provide an energy-saving and environment-friendly preparation method that can prevent hydrolysis of raw materials and side reactions. Invention content: [0004] Aiming at the defects of the prior art, the purpose of the present invention is to provide a green and energy-saving preparati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/28
Inventor 黄鹏飞许阳宾田宗林孟跃中蔡鑫
Owner 佛山市天宇安贝尔新材料有限公司
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