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Antioxidant, preparation method and application thereof

An antioxidant and reaction technology, applied in chemical instruments and methods, organic chemistry, compounds of Group 5/15 elements of the periodic table, etc., can solve the complex synthesis process, phosphorus trichloride corrosion, toluene solvent is not environmentally friendly, etc. problem, to achieve the effect of simple preparation method, improved mechanical strength, high yield and high purity

Pending Publication Date: 2022-03-15
吉林市博禹祥实工贸有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN104387417A uses 2,4-di-tert-butylphenol, toluene, anion resin, and phosphorus trichloride to prepare the antioxidant triphosphite, but it is relatively easy to hydrolyze in the presence of phosphorus trichloride, the experimental conditions are harsh, and the synthesis process is complicated. The added toluene solvent is not environmentally friendly, and the post-processing process is inconvenient
In addition, phosphorus trichloride is severely corroded, and there are potential safety hazards in the reaction process

Method used

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  • Antioxidant, preparation method and application thereof
  • Antioxidant, preparation method and application thereof
  • Antioxidant, preparation method and application thereof

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preparation example Construction

[0044] The second aspect of the present invention provides a kind of preparation method of said antioxidant, comprising: triethyl phosphite, tetrahydric alcohol, C n h 2n+2 The alcohol represented by O and the catalyst are put into the reactor and reacted at 120-165°C for 4-6h to obtain the product.

[0045] In one embodiment, the preparation method of the antioxidant comprises: triethyl phosphite, tetrahydric alcohol, C n h 2n+2 Put the alcohol represented by O and the catalyst into the reactor, and react at 165°C for 4-6h to obtain it.

[0046] In one embodiment, the preparation method of the antioxidant comprises: triethyl phosphite, tetrahydric alcohol, C n h 2n+ 2 The alcohol represented by O and the catalyst are put into the reaction kettle, and reacted at 130-165°C for 4-6h under double-speed and helical propulsion stirring to obtain the product.

[0047] The applicant found in the experiment that when the reaction temperature exceeded 130°C (including 130°C), the...

Embodiment 1

[0055] Embodiment 1 of the present invention provides a kind of antioxidant, its preparation raw material comprises triethyl phosphite, pentaerythritol, n-octanol, n-decyl alcohol, n-tridecanol, catalyst.

[0056] The catalyst is lithium hydroxide and sodium hydroxide with a weight ratio of 1:1.

[0057] The catalyst is 3 wt% of triethyl phosphate.

[0058] The molar ratio of n-octanol, n-decyl alcohol and n-tridecyl alcohol is 0.1:1:1.

[0059] The molar ratio of the triethyl phosphite, pentaerythritol and the total amount of n-octanol, n-decyl alcohol and n-tridecyl alcohol is 1:0.3:0.5.

[0060] The preparation method of the antioxidant is as follows: triethyl phosphite, pentaerythritol, n-octanol, n-decyl alcohol, n-tridecyl alcohol, and catalysts are put into the reaction kettle, and under double-speed and screw propulsion stirring, the React at 165°C for 4h, heat up to remove ethanol, and filter to obtain the product.

Embodiment 2

[0062] Embodiment 2 of the present invention provides a kind of antioxidant, its preparation raw material comprises triethyl phosphite, pentaerythritol, n-octanol, n-decyl alcohol, n-tridecanol, catalyst.

[0063] The catalyst is lithium hydroxide and sodium hydroxide with a weight ratio of 1:10.

[0064] The catalyst is 5 wt% of triethyl phosphate.

[0065] The molar ratio of n-octanol, n-decyl alcohol and n-tridecyl alcohol is 0.8:5:1.

[0066] The molar ratio of the triethyl phosphite, pentaerythritol and the total amount of n-octanol, n-decyl alcohol and n-tridecyl alcohol is 1:0.8:1.2.

[0067] The preparation method of the antioxidant is as follows: triethyl phosphite, pentaerythritol, n-octanol, n-decyl alcohol, n-tridecyl alcohol, and catalysts are put into the reaction kettle, and under double-speed and screw propulsion stirring, the React at 165°C for 6h, heat up to remove ethanol, and filter to obtain the product.

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Abstract

The invention relates to the field of phosphite antioxidants, in particular to an antioxidant as well as a preparation method and application thereof, the antioxidant is prepared from the following raw materials: triethyl phosphite, tetrahydric alcohol, alcohol represented by CnH2n + 2O and a catalyst; wherein n is greater than or equal to 8. The preparation method of the antioxidant is simple, convenient to operate and safe, and the obtained antioxidant is high in yield and purity.

Description

technical field [0001] The invention relates to the field of phosphite antioxidants, more specifically, the invention relates to an antioxidant, a preparation method and an application thereof. Background technique [0002] Antioxidants are widely used in the preparation and use of materials such as polyolefins and polyesters. CN104387417A uses 2,4-di-tert-butylphenol, toluene, anion resin, and phosphorus trichloride to prepare antioxidant triphosphite, but it is relatively easy to hydrolyze in the presence of phosphorus trichloride, the experimental conditions are harsh, and the synthesis process is complicated. The added toluene solvent is not environmentally friendly, and the post-processing process is inconvenient. In addition, phosphorus trichloride is severely corroded, and there are potential safety hazards in the reaction process. Therefore, it is necessary to provide a clean and easy-to-operate preparation method of antioxidants. Contents of the invention [00...

Claims

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Application Information

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IPC IPC(8): C07F9/142C08K5/524C08L23/06C08L23/12C08L27/06C08L55/02C08L67/00
CPCC07F9/142C08K5/524C08L23/06C08L23/12C08L27/06C08L55/02C08L67/00C08L2201/08Y02P20/52
Inventor 苑哲
Owner 吉林市博禹祥实工贸有限公司
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