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Preparation method of low-odor oil-extended styrene butadiene rubber

An oil-extended styrene-butadiene rubber and low-odor technology, which is applied in the field of synthetic rubber production, can solve problems such as unpleasantness, toxicity of mercaptans, and strong odor of mercaptans, and achieve the effect of reducing damage

Active Publication Date: 2016-10-05
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mercaptan smell in the production site of the styrene-butadiene rubber workshop is very strong and unpleasant, and the mercaptan is also toxic, and the working environment for the operators is harsh

Method used

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  • Preparation method of low-odor oil-extended styrene butadiene rubber
  • Preparation method of low-odor oil-extended styrene butadiene rubber
  • Preparation method of low-odor oil-extended styrene butadiene rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) First, vacuum and nitrogen replacement are carried out to the polymerization kettle. Add soft water, emulsifier, electrolyte solution, reducing agent, environment-friendly regulator, styrene, butadiene, and isoprene to the polymerization kettle in turn. When the temperature of the polymerization kettle drops to 5°C, add the initiator to peroxidize Hydrogen is used for menthane, and the polymerization experiment is carried out. When the conversion rate reaches 60%, the terminator HSD is added to terminate the reaction, and the oil-extended rubber base glue is obtained.

[0024] (2) Mix the oil-extended adhesive base glue and the extended oil emulsion evenly, add it to the dilute sulfuric acid solution with a pH value of 3, stir, and control the temperature at 55°C for 5 minutes. After coagulation, wash and dry to obtain the filled Finished oil glue.

[0025] The polymerization component and parts by weight that above-mentioned step (1) comprises are:

[0026]

...

Embodiment 2

[0044] (1) First, vacuum and nitrogen replacement are carried out to the polymerization kettle. Add soft water, emulsifier, electrolyte solution, reducing agent, environment-friendly regulator, styrene, butadiene, and isoprene to the polymerization kettle in turn. When the temperature of the polymerization kettle drops to 5°C, add the initiator to peroxidize Hydrogen is used for menthane, and the polymerization experiment is carried out. When the conversion rate reaches 60%, the terminator HSD is added to terminate the reaction, and the oil-extended rubber base glue is obtained.

[0045] (2) Mix the oil-extended adhesive base glue and the extended oil emulsion evenly, add it to the dilute sulfuric acid solution with a pH value of 4, stir, and control the temperature at 65°C for 10 minutes. After coagulation, wash and dry to obtain the filled Finished oil glue.

[0046] The polymerization component and parts by weight that above-mentioned step (1) comprises are:

[0047]

...

Embodiment 3

[0065] (1) First, vacuum and nitrogen replacement are carried out to the polymerization kettle. Add soft water, emulsifier, electrolyte solution, reducing agent, environment-friendly regulator, styrene, butadiene, and isoprene to the polymerization kettle in turn. When the temperature of the polymerization kettle drops to 5°C, add the initiator to peroxidize Hydrogen is used for menthane, and the polymerization experiment is carried out. When the conversion rate reaches 60%, the terminator HSD is added to terminate the reaction, and the oil-extended rubber base glue is obtained.

[0066] (2) Mix the oil-extended adhesive base glue and the extended oil emulsion evenly, add it to the dilute sulfuric acid solution with a pH value of 3.5, stir, and control the temperature at 60°C for 7.5 minutes. After coagulation, wash and dry to obtain the filled Finished oil glue.

[0067] The polymerization component and parts by weight that above-mentioned step (1) comprises are:

[0068] ...

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Abstract

A preparation method of low-odor oil-extended styrene butadiene rubber comprises the following steps: 1, carrying out vacuum nitrogen displacement in a polymerization kettle, sequentially adding soft water, an emulsifier, an electrolyte solution, a reducing agent, an environmentally-friendly regulator, styrene, butadiene and isoprene into the polymerization kettle, adding an initiator p-menthane hydroperoxide when the temperature in the polymerization kettle decreases to 5DEG C or below, carrying out polymerization experiments, and adding a terminator HSD when the conversion rate reaches 60% to terminate a reaction in order to obtain an oil-extended base rubber solution; and 2, uniformly mixing the oil-extended base rubber solution with an extending oil emulsion, adding the obtained solution to a diluted sulfuric acid solution, stirring, carrying out a reaction at 55-65DEG C for 5-10min, washing the obtained reaction product after coacervation, and drying the washed product to obtain the finished oil-extended rubber.

Description

technical field [0001] The invention belongs to the technical field of synthetic rubber production, in particular to a method for preparing low-odor oil-extended styrene-butadiene rubber. Background technique [0002] Oil-extended styrene-butadiene rubber has the characteristics of good processing performance, low heat generation, and good low-temperature flexibility. It has excellent traction performance and wear resistance especially when used as tire tread rubber. The plasticity of EPSBR is enhanced after adding filler oil, it is easy to mix, and the capacity of rubber mixing equipment is also improved. Compared with the market price of synthetic rubber, the price of extender oil is relatively low. Therefore, the production of oil-extended styrene-butadiene rubber not only increases the output, but also reduces the production cost. [0003] Molecular weight regulators are also known as chain transfer agents. In the free radical polymerization process, in order to contr...

Claims

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Application Information

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IPC IPC(8): C08C1/14C08L9/06C08L91/00C08F236/10C08F2/38
Inventor 殷兰庞建勋孙继德李永茹侯军郭睿达田原王松芝
Owner PETROCHINA CO LTD
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