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Environmental-friendly type styrene-butadiene rubber preparation method

A technology of butadiene and styrene, which is applied in the field of preparation of environmentally friendly styrene-butadiene rubber, and can solve problems such as insufficient performance

Inactive Publication Date: 2014-04-23
HANGZHOU ZHECHEN RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some of the performance of the product is relatively insufficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Embodiment 1: a kind of preparation method of environment-friendly type styrene-butadiene rubber, carry out according to the following steps:

[0076] (1) Preparation by blending butadiene:

[0077] Store fresh butadiene in a spherical tank, the storage pressure of which is ≤0.36MPa, and the storage temperature is controlled by an ammonia-cooled heat exchanger to be ≤18°C. After alkali washing, it is mixed with recovered butadiene to prepare butadiene , the purity of blended butadiene is controlled to be 91.0%, and the TBC content is ≤10ppm, to be used for polymerization; the purity of recovered butadiene is ≥78.0%

[0078] During alkali washing: butadiene: 10% NaOH solution = 1 part: 1.2 parts, mixed through the pipeline, and the lye is recycled;

[0079] (2) Preparation by blending styrene:

[0080] Fresh styrene is stored in a storage tank, and the storage temperature is controlled by an ammonia-cooled heat exchanger to ≤18°C. Fresh styrene and recycled styrene ar...

Embodiment 2

[0143] Embodiment 2: a kind of preparation method of environment-friendly type styrene-butadiene rubber, carry out according to the following steps:

[0144] (1) Preparation by blending butadiene:

[0145] Store fresh butadiene in a spherical tank, the storage pressure of which is ≤0.36MPa, and the storage temperature is controlled by an ammonia-cooled heat exchanger to be ≤18°C. After alkali washing, it is mixed with recovered butadiene to prepare butadiene , the purity of blended butadiene is controlled to be 95.0%, and the TBC content is ≤10ppm, to be used for polymerization; the purity of recovered butadiene is ≥78.0%

[0146] During alkali washing: butadiene: 10% NaOH solution = 1 part: 1.4 parts, mixed through the pipeline, and the lye is recycled;

[0147] (2) Preparation by blending styrene:

[0148] Fresh styrene is stored in a storage tank, and the storage temperature is controlled by an ammonia-cooled heat exchanger to ≤18°C. Fresh styrene and recycled styrene are...

Embodiment 3

[0211] Embodiment 3: a kind of preparation method of environment-friendly type styrene-butadiene rubber, carry out according to the following steps:

[0212] (1) Preparation by blending butadiene:

[0213] Store fresh butadiene in a spherical tank, the storage pressure of which is ≤0.36MPa, and the storage temperature is controlled by an ammonia-cooled heat exchanger to be ≤18°C. After alkali washing, it is mixed with recovered butadiene to prepare butadiene , the purity of blended butadiene is controlled to be 97.0%, and the content of TBC is ≤10ppm, to be used for polymerization; the purity of recovered butadiene is ≥78.0%

[0214] During alkali washing: butadiene: 10% NaOH solution = 1 part: 1.5 parts, mixed through the pipeline, and the lye is recycled;

[0215] (2) Preparation by blending styrene:

[0216] Fresh styrene is stored in a storage tank, and the storage temperature is controlled by an ammonia-cooled heat exchanger to ≤18°C. Fresh styrene and recycled styrene ...

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Abstract

The invention relates to a rubber preparation method, and especially relates to an environmental-friendly type styrene-butadiene rubber preparation method. The method comprises the following steps: blending butadiene to prepare, blending styrene to prepare, preparing soap liquid, preparing an activator, preparing a deoxygenation agent, preparing a terminator, preparing an oxidizing agent and a conditioning agent, performing polymerization, recovering an unreacted monomer, recovering unreacted butadiene, recovering unreacted styrene, introducing rubber latex in a storage tank, preparing an environment-friendly type antioxidant, preparing an environment-friendly type oil emulsion, preparing oil-charging rubber latex, preparing mother liquor, condensing, washing, dehydrating, drying, briquetting, detecting and packaging. The environmental-friendly type styrene-butadiene rubber preparation method has the advantages of outstanding environmental performance, can protect environment and optimize the usage performance, and the product adaptability is high.

Description

technical field [0001] The invention relates to a method for preparing rubber, in particular to a method for preparing environment-friendly styrene-butadiene rubber. Background technique [0002] The production of emulsion polymerized styrene-butadiene rubber began in Germany, and achieved rapid development in the United States. Before the end of World War II, both Germany and the United States adopted Buna-S technology to produce styrene-butadiene rubber by thermal emulsion polymerization. After the end of the war, the United States first adopted the process of cold emulsion polymerization of styrene-butadiene rubber, using a redox initiation system as the polymerization formula. Emulsion polymerized styrene-butadiene rubber in other countries developed relatively late, and industrial production was only realized after the 1950s. It is a breakthrough in the polymerization process of producing emulsion polystyrene butadiene rubber from the thermal polymerization of the per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F236/10C08F2/38C08F6/22C08J11/02
Inventor 包春斌
Owner HANGZHOU ZHECHEN RUBBER