Butyl rubber: Strengthening of absorbing - butyl rubber, technology - chemical industry

Butyl rubber: Strengthening of absorbing - butyl rubber

, technology - chemical industry

And halogenated butyl rubber (HIIR) two categories, production methods include slurry and solution and French. Slurry technology from the United States and Germany, Bayer Exxon monopoly; solution method of synthetic rubber from Russia Togliatti company with Italian Pressindustra Cooperation Development. At present the major producers of butyl rubber in the United States and Canada.

As the performance of IIR and HIIR be different, use different. In China, IIR is mainly used for production Car Inner tubes, cycle tire inner tubes, curing and sealing tape capsule; HIIR used automobile radial tire's inner liner and medical stopper, etc., consistent with the consumption structure and abroad. HIIR not only retains the excellent properties of IIR, but also a variety of cross-linking reaction can improve the cure rate, improvement of adhesion with rubber and other co-vulcanization, and overcomes the shortcomings of IIR. With the upgrading of tire technology, tire inner tube made by IIR will gradually be made by the HIIR radial tires replaced.

Core technology by foreign monopoly Butyl rubber core technology mainly by Exxon Mobil and the Bayer monopoly. China Butyl Rubber basic patents owned by foreign or joint venture rubber tire application. The main R & D units in China at Sichuan University, focused on butyl rubber and other rubber mixture research, technological level is low. Foreign patent applications for patent protection in China, domestic self-developed butyl rubber polymerization process and preparation techniques put forward higher requirements.

Foreign patent applicants butyl rubber is mainly Japanese companies, their top three applications. Has a butyl rubber core technology companies Exxon Mobil and Bayer in fourth and fifth place, with strong technological advantage.

Butyl rubber research and development in China began in the 20th century 60's, but has not been built for industrial production equipment. In 1999, Sinopec Beijing Yanshan Petrochemical company introduced the Italian PI company's technology, built in China so far only 30,000 tons / year plant. Device attracted a total of three grades, are ordinary butyl rubber products.

Patent applications from butyl rubber, China patent applications in 2000, began to rise; abroad from 1985 to 1996, patent applications butyl rubber is relatively stable, but every year about 100, from began to rise after 1996, still maintains a certain amount of patent applications.

Emergence of new products, new technology

Butyl rubber research and development focus aimed reactor technology and process control, new technology and new products.

Patented technology from the analysis of butyl rubber can be seen, the foreign butyl rubber production technology are moving in the improvement of slurry and solution polymerization process direction, such as new metallocene catalyst in butyl rubber polymerization process has been applied. Butyl rubber research institutes abroad, more than ionization by graft and butyl rubber chemical modification method was modified, there has been grafted halogenated butyl rubber, star branched butyl-type rubber, isobutylene / methyl styrene copolymer and other new products.

Butyl rubber polymerization mainly halogenated butyl rubber reaction (C08F8) and polymerization of isobutylene and isoprene butyl rubber (C08F210). Applications focused on butyl rubber butyl rubber production in the use of car tire inner liner - Liner (C08L23).

Strengthen technical exchanges with foreign countries

Our only set of 30 thousand tons / year butyl rubber production plant capacity less. In addition, the butyl rubber in China mainly by the Bayer patent and LANXESS company to apply for, engaged in butyl rubber research institutions is limited to universities, and patent applications than less.

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