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Colored polybutadiene material and preparation method thereof

A technology for polybutadiene and polybutadiene is applied in the field of colored polybutadiene materials and their preparation, which can solve the problems of mixing and coloring under complex conditions such as high temperature and high pressure, and achieve coloring effect and anti-aging effect. Better oxidation, long-lasting color effect

Inactive Publication Date: 2021-05-07
吴超群
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the past, most of the rubber products we produced were mainly black, gray or white, but as people have higher and higher requirements for the use and color of rubber products, they often need colorful rubber products, which requires us to pass The rubber is colored with a mixture of various pigments; the rubber is usually mixed and colored under complex conditions such as high temperature and high pressure, and the cost and performance of the pigment and product must be taken into account. General properties, such as: adaptability, fatigue resistance, environmental protection, non-toxic safety, etc., which have higher technical requirements for rubber dyeing; based on the above, the present invention uses polybutadiene molecular weight block colorants To solve the problem that rubber needs to be mixed and colored under complex conditions such as high temperature and high pressure, the invention proposes a colored polybutadiene material and its preparation method

Method used

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  • Colored polybutadiene material and preparation method thereof
  • Colored polybutadiene material and preparation method thereof
  • Colored polybutadiene material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add the colorant (5.0mmol) and 20ml of anhydrous tetrahydrofuran THF into the reactor, and after the reaction temperature rises to 70°C, slowly add SOCl dropwise 2 (5.0mmol), dropwise completed reaction 2h, after finishing reaction, decompression distillation removes SOCl 2 And THF, the colorant acid chloride product is obtained.

[0027] Hydroxyl-terminated polybutadiene (50.0mmol) was added to a 50ml Schlenk bottle, and after pumping nitrogen three times, N 2 Under protection, add 30ml of anhydrous toluene to a disposable syringe, raise the temperature to 70°C, inject 1ml of pyridine after the hydroxyl-terminated polybutadiene is completely dissolved, stir for 30min, add the above-mentioned colorant acid chloride product dissolved in toluene dropwise, and raise the temperature The reaction was continued at 80°C for 3 hours, the product was cooled to room temperature, and after two cycles of continuous dissolution / precipitation in toluene / methanol, it was dried in vac...

Embodiment 2

[0029] Put 100 parts by mass of polybutadiene grafted colorant, 10 parts by mass of anti-dripping agent, 2 parts by mass of composite antioxidant, and 3 parts by mass of other additives in a mixer at a speed of 600 revolutions per minute at 25°C After mixing for 20 minutes, the mixed material is extruded through an extruder at 230° C., cooled, dried, and pelletized to obtain a colored polybutadiene material.

Embodiment 3

[0031] Put 80 parts by mass of polybutadiene grafted colorant, 10 parts by mass of anti-dripping agent, 2 parts by mass of composite antioxidant, and 3 parts by mass of other additives in a mixer at a speed of 600 revolutions per minute at 25°C After mixing for 20 minutes, the mixed material is extruded through an extruder at 230° C., cooled, dried, and pelletized to obtain a colored polybutadiene material.

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Abstract

The invention discloses a colored polybutadiene material and a preparation method thereof. The colored polybutadiene material consists of the following components in parts by mass: 60-100 parts of a polybutadiene grafted coloring agent, 5-20 parts of an anti-dripping agent, 1-3 parts of an antioxidant and 2-5 parts of other auxiliaries; according to the invention, the coloring agent is grafted on the polybutadiene molecular chain so that polybutadiene molecules have colors, and the problem that rubber needs to be mixed and colored under complex conditions of high temperature, high pressure and the like is solved; the coloring agent is grafted on the polybutadiene molecular chain, a large number of cyano groups and carboxyl groups on thecoloring agent molecules interact with hydroxyl groups or ester groups on the antioxidant, and the cyano groups and the carboxyl groups have a synergistic effect so that the coloring effect and the antioxidant effect of the polybutadiene material are better.

Description

technical field [0001] The invention belongs to the field of polymer chemical synthesis, and in particular relates to a colored polybutadiene material and a preparation method thereof. Background technique [0002] In the past, most of the rubber products we produced were mainly black, gray or white, but as people have higher and higher requirements for the use and color of rubber products, they often need colorful rubber products, which requires us to pass The rubber is colored with a mixture of various pigments; the rubber is usually mixed and colored under complex conditions such as high temperature and high pressure, and the cost and performance of the pigment and product must be taken into account. General properties, such as: adaptability, fatigue resistance, environmental protection, non-toxic safety, etc., which have high technical requirements for rubber dyeing; based on the above, the present invention uses polybutadiene molecular weight block colorants To solve t...

Claims

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Application Information

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IPC IPC(8): C08F136/06C08F8/34
CPCC08F8/34C08F136/06
Inventor 吴超群
Owner 吴超群