Synthesis technique of brominated butyl rubber

Abstract

The invention discloses a synthesis technique of brominated butyl rubber, belonging to the technical field of rubber synthesis. The technique comprises two serial processes comprising bromination of butyl rubber and neutralization of brominated mixture solution. According to the technique, alkane solution of bromine is mixed with alkane solution of butyl rubber in a pipeline reactor, subjected to the bromination, remained for 6s-60s in the subsequent pipeline, introduced into alkali liquor by another pipeline reactor, subjected to the neutralization, and remained for 20s-300s in the subsequent pipeline, then the reaction is finished. The technique has the following characteristics of high reaction speed, short reaction time and exact control, and is suitable for inhibiting the transformation from secondary-bromine substituted principal product to primary-bromine substituted side product; and each index of the obtained product is excellent.

Description

technical field

[0001] The invention belongs to the technical field of rubber synthesis, and in particular relates to a synthesis process of brominated butyl rubber. technical background

[0002] With the development of science and technology, chemical engineering technology is constantly developing in the direction of high efficiency, energy saving and safety. In order to achieve the goal of sustainable development and comprehensive utilization of resources and energy, new requirements are put forward for the chemical production process. In 1937, Exxon Company prepared butyl rubber. In 1953, people developed the bromination method of butyl rubber. Compared with traditional butyl rubber, brominated butyl rubber has better heat resistance, acid and alkali resistance, vulcanization activity, and other properties. It has obvious advantages in rubber blending and regeneration performance, and is the main raw material for high-grade automobile inner tubes. With the development o...

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