Emulsion-type highly-dispersed antioxidant

An antioxidant, emulsion-type technology, applied in the field of antioxidant preparation, can solve the problems of cracking, poor dispersion of antioxidants, material fading, etc.

Inactive Publication Date: 2017-08-18
JIANGSU FEIYA CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Rubber, plastic, latex, etc. are important materials in daily life, and their application fields are constantly expanding. However, whether polymer materials are natural or synthetic, they are prone to oxidation reactions, which will cause the materials to fade, yellow, crack, and lose luster. Wait
The antioxidant dispersibility of the prior art is poor, which can meet the application requirements of rubber and plastics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0018] a1, phenol and methanol in the catalyst Cs / SiO 2 The methylation reaction of phenol is carried out under the action, the loading amount of the Cs is 0.1%, and the product mixed cresol is obtained;

[0019] a2, add toluene and complexing agent oxalic acid in the reaction kettle, the mass ratio of described toluene and oxalic acid is 1:1, heat to 90 ℃ by steam, add described mixed cresol, the quality of described mixed phenol and toluene The ratio is 1:1, heated for 1h, and filtered to obtain filtrate and white granular p-cresol-oxalic acid complex;

[0020] a3. Add p-cresol-oxalic acid complex particles to a mixed solution of toluene and methanol, the volume content of the methanol is 20%, stir for 1 hour, and filter to obtain p-cresol-oxalic acid complex;

[0021] a4. Add the cresol-oxalic acid complex obtained in a3 into water, raise the temperature to 40° C., keep it warm for 1 hour, and separate to obtain the upper organic phase and the lower aqueous phase;

[0022...

Embodiment example 2

[0028] b1, phenol and methanol in the catalyst Cs / SiO 2 The methylation reaction of phenol is carried out under the action, the loading amount of the Cs is 2%, and the product mixed cresol is obtained;

[0029] b2. Add toluene and complexing agent oxalic acid to the reactor, the mass ratio of the toluene and oxalic acid is 1:3, heat to 110°C by steam, add the mixed cresol, the mass of the mixed phenol and toluene The ratio is 1:2, heated for 2h, and filtered to obtain filtrate and white granular p-cresol-oxalic acid complex;

[0030] b3. Add p-cresol-oxalic acid complex particles to a mixed solution of toluene and methanol, the volume content of the methanol is 40%, stir for 2 hours, and filter to obtain p-cresol-oxalic acid complex;

[0031] b4. Add the cresol-oxalic acid complex obtained in b3 into water, raise the temperature to 60° C., keep it warm for 2 hours, and separate to obtain the upper organic phase and the lower aqueous phase;

[0032] b5, the lower aqueous phas...

Embodiment example 3

[0038] c1, phenol and methanol in the catalyst Cs / SiO 2 The methylation reaction of phenol is carried out under the action, the loading amount of the Cs is 1%, and the product mixed cresol is obtained;

[0039] c2. Add toluene and complexing agent oxalic acid to the reactor, the mass ratio of the toluene and oxalic acid is 1:2, heat to 100°C by steam, add the mixed cresol, the mass of the mixed phenol and toluene Ratio is 1:1.5, heating 1.5, by filtering, obtain filtrate and white granular p-cresol-oxalic acid complex;

[0040] c3. Add p-cresol-oxalic acid complex particles to a mixed solution of toluene and methanol, the volume content of the methanol is 30%, stir for 1.5h, and filter to obtain p-cresol-oxalic acid complex;

[0041] c4. Add the cresol-oxalic acid complex obtained in c3 into water, raise the temperature to 5°C, keep it warm for 1.5h, and separate to obtain the upper organic phase and the lower aqueous phase;

[0042] c5. The lower aqueous phase is extracted ...

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Abstract

The invention discloses a preparation method of an emulsion-type highly-dispersed antioxidant. The preparation method comprises the following steps: performing a phenol methylation reaction on phenol and methyl alcohol under the action of a catalyst Cs/SiO2 to obtain mixed cresol as a product; adding methylbenzene and oxalic acid as a complexing agent into a reaction kettle, adding the mixed cresol, and filtering to obtain a filtrate and a white granular p-cresol-oxalic acid complex; adding the p-cresol-oxalic acid complex granules into a mixed solution of methylbenzene and methyl alcohol, and filtering to obtain the p-cresol-oxalic acid complex; adding the obtained p-cresol-oxalic acid complex into water, and separating to obtain an upper organic phase and a lower water phase; distilling the upper organic phase to remove a solvent to obtain p-cresol; adding the obtained p-cresol into silicon sol with the solid content of 40-50%, and stirring to obtain the emulsion-type highly-dispersed antioxidant. The emulsion-type highly-dispersed antioxidant is good in dispersion and has excellent oxidation resistance.

Description

technical field [0001] The invention relates to the technical field of antioxidant preparation, in particular to an emulsion type highly dispersed antioxidant. Background technique [0002] Rubber, plastic, latex, etc. are important materials in daily life, and their application fields are constantly expanding. However, whether polymer materials are natural or synthetic, they are prone to oxidation reactions, which will cause the materials to fade, yellow, crack, and lose luster. Wait. The antioxidants in the prior art have poor dispersibility and can well meet the application requirements of rubber and plastics. Therefore, it is necessary to develop an emulsion type highly dispersible antioxidant. Contents of the invention [0003] The object of the present invention is to provide an emulsion-type highly dispersed antioxidant, which can solve one or more of the above-mentioned problems in the prior art. [0004] A kind of preparation method of emulsion type highly disp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/13C08K3/36C07C37/16C07C39/07
CPCC08K5/13C07C37/16C08K3/36C08L2201/08C07C39/07
Inventor 曹宏生王忠冬熊畅
Owner JIANGSU FEIYA CHEM IND
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