China to achieve the rare earth isoprene rubber completely replace natural rubber

CAS Changchun Institute of Applied Chemistry developed " 30,000 tons / year of rare earth isoprene rubber sets industrialization technology" results, recently organized by the outcome of the identification by the Chinese Academy of Sciences . The Group believes that the project as a whole has reached the international advanced level , marking China's rare earth isoprene rubber production technology has been at the forefront of the world .

The results of the independent development of the catalyst , polymerization, condensation and post-processing technology as the core , the integration of advanced reactor technology , automatic control technology and energy saving technology to develop the first set of 30,000 tons / year of rare earth isoprene rubber technology package and built the largest single production capacity at home and abroad of industrial production equipment . In rare double catalytic olefin polymerization proposed new mechanism , based on the development of the catalyst has high activity and high cis orientation , cost control and product molecular weight and its distribution (Mw / Mn ≤ 2.5) features. Neodymium catalytic activity of 0.18kg / t gum, rare earth elements from the traditional utilization rate of 8% -10 % to nearly 100% , the polymerization time is 6-7 hours from the original to the current three hours or less , compared with foreign catalyst efficiency nearly 1 times the product cis content of more than 97%. And the development of a suitable system of multi- viscosity glue polymerization reactor consecutive series , cohesion, post-treatment and solvent recovery technology, including patents and proprietary technology, while addressing the thermal equilibrium and transport , such as rubber glue viscosity system and other engineering and technical problems, the entire device to reduce overall energy consumption by 20% compared with similar foreign technology .

After China Rubber Industry Association Research Center certified materials testing , industrial product performance levels than similar foreign products , can completely replace the natural rubber used TBR tire tread . At present, the set of technologies has applied for 73 patents at home and abroad , of which 35 have been authorized to form the independent intellectual property rights system. The complete set of technical results compared with existing similar technologies abroad , with the largest single-line capacity , the lowest energy and material consumption , energy saving and environmentally advanced features , including isoprene rubber products which catalyst cost per ton fell below $ 800 , the entire device overall energy consumption 20% lower than in other countries , but more importantly is the first time the rare earth isoprene rubber completely replace natural rubber for tire production, out of the country entirely dependent on natural rubber , for enhancing the overall technological level of China's rubber industry and the promotion of a large variety of synthetic rubber production technology research and development of independent significance .


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