Preparation method and application of plant polyphenol based rubber accelerator

A rubber accelerator and plant polyphenol technology, which is applied in the field of preparation of plant polyphenol-based rubber accelerators, can solve the problems of easy precipitation, single function, low molecular weight, etc., and achieve long scorch time, less reaction by-products, and low cost. low effect

Active Publication Date: 2017-05-31
肇庆市联力化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at the technical problem that the modified accelerator existing in the prior art has single function and low molecular weight, and is easy to separate out, the purpose of the present invention is to provide a kind of preparation method and application of plant polyphenol-based rubber accelerator, wherein, plant The preparation method of polyphenol-based multifunctional rubber accelerator, including the selection of raw materials, proportioning, reaction temperature, time and pH value, etc., as well as the separation and purification methods of products

Method used

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  • Preparation method and application of plant polyphenol based rubber accelerator
  • Preparation method and application of plant polyphenol based rubber accelerator
  • Preparation method and application of plant polyphenol based rubber accelerator

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Embodiment 1

[0041] The preparation of embodiment 1 plant polyphenol-based rubber accelerator TPM

[0042]A preparation method of plant polyphenol-based rubber accelerator, specifically comprising the steps of:

[0043] (1) Weigh 10g of 2-mercaptobenzothiazole (MBT), dissolve in 50ml of formaldehyde in ethanol solution, and stir at room temperature for 10min;

[0044] (2) Adjust PH=3 with hydrochloric acid, reflux and stir in a water bath at 70°C for 6 hours;

[0045] (3) Add 10 g of plant polyphenols into 50 ml of absolute ethanol, adjust the pH to 3 with hydrochloric acid, and oscillate ultrasonically for 5 minutes;

[0046] (4) Add the plant polyphenol ethanol solution in step (3) to the solution prepared in step (2), and continue to react at 70°C for 9 hours;

[0047] (5) The reaction product was left at -10°C for 2 days at low temperature to precipitate unreacted MBT, and filtered;

[0048] (6) The filtrate was added to distilled water, and the plant polyphenol-based multifunctiona...

Embodiment 2

[0049] The preparation of embodiment 2 plant polyphenol-based rubber accelerator TPN

[0050] A preparation method of plant polyphenol-based rubber accelerator, specifically comprising the steps of:

[0051] (1) Weigh 10g of N-tert-butyl-2-benzothiazolesulfenamide (NS), dissolve in 100ml of formaldehyde in ethanol solution, and stir at room temperature for 10min;

[0052] (2) Adjust PH=4 with hydrochloric acid, reflux and stir in 80°C water bath for 3h;

[0053] (3) Add 10 g of plant polyphenols into 100 ml of absolute ethanol, adjust the pH to 4 with hydrochloric acid, and oscillate ultrasonically for 5 minutes;

[0054] (4) Add the plant polyphenol ethanol solution in step (3) to the solution prepared in step (2), and continue to react at 80° C. for 5 h;

[0055] (5) The reaction product was left at -10°C for 2 days at low temperature to precipitate unreacted NS, and filtered;

[0056] (6) The filtrate was added to distilled water, and the plant polyphenol-based multifunc...

Embodiment 3

[0057] The preparation of embodiment 3 plant polyphenol-based rubber accelerator TPM

[0058] A preparation method of plant polyphenol-based rubber accelerator, specifically comprising the steps of:

[0059] (1) Weigh 10g of 2-mercaptobenzothiazole (MBT), dissolve in 100ml of formaldehyde in ethanol solution, and stir at room temperature for 10min;

[0060] (2) Adjust PH=6 with hydrochloric acid, reflux and stir in a water bath at 90°C for 3 hours;

[0061] (3) Add 10 g of plant polyphenols into 100 ml of absolute ethanol, adjust the pH to 6 with hydrochloric acid, and oscillate ultrasonically for 5 minutes;

[0062] (4) Add the plant polyphenol ethanol solution in step (3) to the solution prepared in step (2), and continue to react at 90° C. for 3 hours;

[0063] (5) The reaction product was left standing at a low temperature at -10°C for 3 days to precipitate unreacted MBT, and filtered;

[0064] (6) The filtrate was added to distilled water, and the plant polyphenol-base...

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Abstract

The invention discloses a preparation method and application of a plant polyphenol based rubber accelerator. The preparation method comprises the following steps: (1) dissolving secondary amine containing a rubber accelerator into a formaldehyde absolute ethyl alcohol solution and stirring; (2) reflowing and stirring in an acid adjusting water bath; (3) adding plant polyphenol into absolute ethyl alcohol, carrying out acid adjustment and ultrasonic oscillation, and continually reacting; (4) standing a reaction product at low temperature and filtering; (5) adding distilled water into filtrate and separating out the plant polyphenol based multifunctional accelerator; washing with water, filtering and drying to obtain a final product. The plant polyphenol based rubber accelerator integrates a plurality of functions of rubber vulcanization, white carbon black surface modification, ageing prevention and the like and is a multi-functional rubber accelerator, and has the characteristic of environment friendliness; the multifunctional auxiliary agent has moderate preparation conditions; a few of reaction byproducts are generated, the yield is high and the cost is low; the requirements of green chemical are met; the plant polyphenol based rubber accelerator is applied to white carbon black rubber and the strength and elongation properties and dynamic mechanical properties of the rubber can be effectively improved; the plant polyphenol based rubber accelerator can be applied to green tire tread rubber.

Description

technical field [0001] The invention belongs to the technical field of preparation methods of accelerators, and in particular relates to a preparation method and application of plant polyphenol-based rubber accelerators. Background technique [0002] Rubber additives are important auxiliary raw materials in the rubber industry. According to the traditional classification, rubber additives are divided into four categories: vulcanization additives, protective additives, processing additives and other special functional rubber additives. In the rubber industry, although the amount of additives is relatively small, it plays a decisive role in the improvement of product processing and application performance. The development of rubber additives gradually presents the characteristics of high relative molecular weight, multi-function, high performance, green, compound and so on. [0003] Rubber vulcanization accelerators are a very important type of rubber processing aids. Tradit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08K9/04C08K3/36C08K5/47C07D277/72C07D277/80
CPCC07D277/72C07D277/80C08K3/36C08K5/47C08K9/04C08L9/06
Inventor 孙举涛王丽丽刘晓玲梁云昊马艳莉
Owner 肇庆市联力化工有限公司
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