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Preparation and application of a silica dispersant for rubber products

A technology of dispersant and white carbon black, applied in the field of rubber composition and dispersant for rubber industry, can solve the problems of small molecular weight of white carbon black dispersant, decrease in strength of rubber material, loss, etc., to improve the physical properties of rubber, improve the Vulcanization speed and effect of improving dispersion

Active Publication Date: 2017-01-25
BEIJING RED AVENUE INNOVA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the molecular weight of the above-mentioned silica dispersant is relatively small
For rubber materials, although small molecular substances can play a plasticizing role to a certain extent and improve the dispersion of silica, after rubber vulcanization, these small molecular substances remain in the rubber matrix, resulting in a decrease in the strength of the rubber material. At the same time, some small molecular substances will migrate to the rubber surface and gradually lose to the natural environment to cause pollution

Method used

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  • Preparation and application of a silica dispersant for rubber products
  • Preparation and application of a silica dispersant for rubber products
  • Preparation and application of a silica dispersant for rubber products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] In a 500ml round-bottomed flask equipped with a stirrer, a thermometer, and a reflux condenser, add 0.40mol of octadecylamine polyoxyethylene ether with the number of ethoxy groups m+n and 60, and 0.15mol of trimerized oleic acid, and heat Melt it all at 80°C, add 50ml of toluene, then react under reflux until the solution is clear and transparent, change to distillation state to remove the solvent, cool to below 60°C, and obtain the product.

Embodiment 2～7

[0050] Except changing the type of fatty amine polyoxyethylene ether, the preparation process of the silica dispersant in Example 1 was repeated. See Table 1 below for specific data.

[0051] Table 1 Raw materials and prepared products used in Examples 2 to 7

[0052]

[0053]

Embodiment 8

[0055] In a 500ml round-bottom flask reactor equipped with a stirrer, a thermometer, and a reflux condenser, add 0.6mol of dodecylamine polyoxyethylene ether and 0.15mol of dimerized abietic acid with the number of ethoxy groups m+n and 60 respectively. , heated to 100°C to melt all of it, added 50ml of ethanol, then reacted in reflux state until the solution was clear and transparent, changed to distillation state to remove solvent, cooled to below 80°C to obtain the product.

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PUM

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Abstract

The invention provides a dispersant, its preparation method and application, and a rubber composition containing the dispersant. The dispersant of the present invention includes a compound having a structure shown in formula (I), which is obtained by reacting an organic amine substance with a dibasic acid or a polybasic acid, and can optionally be loaded on A supported dispersant is formed on the carrier. The dispersant has a simple preparation method, is safe and environment-friendly, and can significantly improve the dispersion performance of white carbon black in rubber, the processing performance of rubber and various physical properties of rubber compared with the same type of dispersant.

Description

technical field [0001] The present invention relates to a kind of dispersing agent, relate in particular to a kind of dispersing agent for rubber industry, said dispersing agent is especially suitable for improving the dispersing ability of white carbon black in the mixing process of rubber and rubber composition; The present invention also relates to said dispersing agent The preparation method and application thereof, and the rubber composition comprising the dispersant. Background technique [0002] Silica is an important reinforcing agent in rubber materials. Its application has been developed rapidly in recent years, especially as a reinforcing filler for tire tread rubber, which has attracted special attention. Since the surface of silica has a large number of hydroxyl groups, when silica is used in treads, these hydroxyl groups can interact with water molecules on the road surface, which is beneficial to the combination with the road surface on wet and slippery roads,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/332C08L9/06C08L9/00C08L71/02C08K13/02C08K3/36C08K5/09C08K3/22C08J3/22
Inventor 张洁张成蒋小强董栋
Owner BEIJING RED AVENUE INNOVA