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Method for producing chlorinated butyl rubber

A technology for chlorinated butyl rubber and a production method, which is applied in the field of rubber production, can solve the problems of difficult process control, complicated production process of chlorinated butyl rubber, unsatisfactory product quality, etc., and achieves good product quality, easy operation, The effect of easy production conditions

Inactive Publication Date: 2005-09-21
NANTONG DONGTENG SPECIAL SYNTHETIC RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing production process of chlorinated butyl rubber is complicated, the process is difficult to control, and the product quality is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] A kind of production method of chlorinated butyl rubber, comprises the following steps successively:

[0014] ① Dissolution: Dissolve butyl rubber in a solvent - n-hexane (or n-pentane). The dissolution temperature is 25-80°C (for example, 25°C, 50°C, 80°C), and the dissolution time is 4-10°C. Hours (for example 4 hours, 7 hours, 10 hours), to get glue, the consumption of n-hexane (or n-pentane) is: every 10 grams of butyl rubber is used 50~150ml (for example 50ml, 100ml, 150ml);

[0015] 2. Chlorination: The glue is passed into chlorine gas for chlorination, and the time is 10 to 30 minutes (for example, 10 minutes, 20 minutes, and 30 minutes); the amount of chlorine gas introduced is 2 to 6% by weight of the weight of butyl rubber (example 2%, 4%, 6%); When passing into chlorine, also pass into the nitrogen that is equivalent to 5~15 times of chlorine weight (example 5 times, 10 times, 15 times).

[0016] ③Neutralization: use 5% sodium hydroxide solution with the glu...

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PUM

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Abstract

The invention discloses a method for producing chlorinated butyl rubber which comprises the steps of dissolving, chloridizing, neutralizing and charging adjuvant. The invention realizes simple process, easy processing, easy production condition control, and better product quality.

Description

Technical field: [0001] The invention relates to a method for producing rubber. Background technique: [0002] The existing production process of chlorobutyl rubber is complicated, the process is difficult to control, and the product quality is not ideal. Invention content: [0003] The object of the present invention is to provide a kind of simple, easy operation, the production method of chlorinated butyl rubber with good product quality. [0004] Technical solution of the present invention is: [0005] A kind of production method of chlorinated butyl rubber is characterized in that: comprise the following steps successively: [0006] ① Dissolution: Put butyl rubber into the solvent n-alkane and dissolve it to obtain glue. The amount of n-alkane is: 50-150ml per 10 grams of butyl rubber; [0007] ② Chlorination: The glue is chlorinated by passing chlorine gas, and the time is 10 to 30 minutes; [0008] ③Neutralization: neutralize the glue solution treated in step ② w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/22C08F36/06
Inventor 陈甘棠
Owner NANTONG DONGTENG SPECIAL SYNTHETIC RUBBER
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