Butyl rubber production method and device

A technology of butyl rubber and production methods, applied in chemical instruments and methods, chemical/physical/physicochemical processes, control/regulation processes, etc., can solve the problems of low production efficiency and achieve high production efficiency and high slurry concentration , Improve the effect of slurry concentration

Active Publication Date: 2020-06-05
ZHEJIANG CENWAY MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because this method adopts air flotation separation, the colloidal particles in the slurry can be separated at low temperature; but because the content of colloidal particles in the slurry is not high, about 30wt%, this method still has the problem of low production efficiency

Method used

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  • Butyl rubber production method and device
  • Butyl rubber production method and device

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Embodiment Construction

[0048] This specific embodiment is only an explanation of the present invention, not a limitation of the present invention. Changes made by those skilled in the art after reading the description of the present invention, as long as they are within the scope of the claims, will be subject to the patent law. Protect.

[0049] Such as figure 1 Shown, the production device of butyl rubber comprises reactor 1, degassing kettle 2, stripping kettle 3, colloidal water storage tank 4 and primary dehydration equipment 5 connected in series successively; The bottom outlet of reactor 1 is connected with the described The feed port of the degassing kettle 2 is connected,

[0050] The outlet at the bottom of the degassing still 2 is connected with the feed port of the stripping still 3; the outlet at the bottom of the stripping still 3 is connected with the feed port of the colloidal water storage tank 4;

[0051] The production device also includes a hot water storage tank 6 and secondar...

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PUM

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Abstract

The invention relates to a high-single-concentration and high-conversion-rate production method of butyl rubber, and belongs to the technical field of rubber production. The method comprises the following steps: a, feeding a catalyst and a solvent into a polymerization reaction kettle from a first passage; b, feeding an isoprene monomer, an isobutene monomer and a slurry stabilizer into the polymerization reaction kettle from asecond passage; c, polymerizing in the polymerization reaction kettle to generate a butyl rubber suspension; d, enabling the butyl rubber suspension to flow into a degassing kettle from the polymerization reaction kettle, and introducing steam and hot water into the butyl rubber suspension at the same time; e, carrying out degassing kettle treatment; f, carrying outsteam stripping kettle treatment; and g, carrying out vibration dehydration screen treatment, and carrying out subsequent treatment to obtain butyl rubber. A polymerization stabilizer and a matched process are adopted, so that chloromethane slurry containing butyl rubber particles is generated in the production process, and the content of the butyl rubber particles in the slurry reaches 40 wt% orabove; the content obviously exceeds 30wt% in the prior art; therefore, the method provided by the invention has the characteristics of high slurry concentration and stability.

Description

technical field [0001] The invention relates to a production method of high single concentration and high conversion rate of butyl rubber, which belongs to the technical field of rubber production. Background technique [0002] Butyl rubber has good chemical stability and thermal stability, and has good air and water tightness. Widely used in the production and manufacture of automobile tires, bladders, sealing rings, etc. [0003] "Butyl rubber" refers to a copolymer composed of C4-C7 isoolefin and C4-C14 conjugated diene, containing about 0.5~15mol% conjugated diene and 85~99.5mol% isoolefin. The isoolefins from which butyl rubber can be prepared are isobutylene 2-methyl-1-propene, 3-methyl-1-butene, 4-methyl-1-pentene and pinene, preferably isobutylene; conjugated diene Can be isoprene, butadiene, 2,3-dimethylbutadiene, piperylene, 2,5-dimethylhexa2,4-diene, cyclopentadiene, cyclohexadiene alkenes and methylcyclopentadiene, preferably isoprene. The viscosity average m...

Claims

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Application Information

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IPC IPC(8): C08F210/12C08F236/08C08F2/38B01J19/00
CPCB01J19/0006C08F2/38C08F210/12C08F236/08
Inventor 任纪文代俊明朱德权张晓玲邱正茂
Owner ZHEJIANG CENWAY MATERIALS CO LTD
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