Chlorinated butyl rubber synthesizing process

A chlorinated butyl rubber and synthesis process technology, which is applied in the field of chemical synthesis, can solve problems such as high energy consumption, difficult product quality, and product processability decline, and achieve low energy consumption, simple equipment, and reduced occurrence of transposition side reactions The effect of the probability
CN102775540AActive Publication Date: 2012-11-14ZHEJIANG CENWAY MATERIALS CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG CENWAY MATERIALS CO LTD
Publication Date
2012-11-14

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Abstract

The invention discloses a chlorinated butyl rubber synthesizing process and belongs to the technical field of chemical synthesis. The chlorinated butyl rubber synthesizing process includes two series processes, namely butyl rubber chlorination and neutralization of chlorinated mixed liquid. The process utilizes a pipeline type reactor to enable a C12 alkane solution and a butyl rubber alkane solution to be mixed and perform the chlorination, then utilizes the other pipeline type reactor and introduces alkali liquor into the reactor to start neutralization reaction after the solution stays for 6-60 seconds in a follow-up pipeline, and finishes the reaction after reaction solution stays for 20-300 seconds in the follow-up pipeline. The process has the advantages that the reaction speed is quick, the reaction time is short and can be accurately controlled, the conversion from a main product replaced by meso-position chlorine to a by-product replaced by primary-position chlorine is inhibited, and indexes of an obtained product are excellent.
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Description

technical field

[0001] The invention belongs to the technical field of chemical synthesis, and in particular relates to a synthesis process of chlorinated butyl rubber. Background technique

[0002] Chlorinated butyl rubber is obtained by chlorination of butyl rubber. Chlorination occurs in the isoprene part of butyl rubber, requiring most of the substitution reaction of chlorine, so that the double bond of butyl rubber is better preserved. , which can be used for further rubber processing. The majority of chlorobutyl rubber is a saturated butyl skeleton, which has many characteristics of butyl molecules, especially low air and moisture permeability, good shock absorption, good aging resistance and weather resistance in atmospheric environment, etc. In addition, chlorobutyl rubber also has a series of advantages such as fast vulcanization speed, co-vulcanization with other rubbers, more heat resistance, and small compression deformation. Therefore, it has a wide range of u...

Claims

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