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The discovery and development of Ziegler-Natta catalyst has opened a new era of polymer science and industry. The Changchun Institute of Applied Chemistry of the Chinese Academy of Sciences has been engaged in developing a new family of Ziegler-Natta type catalysts, which is composed of rare earth compound and aluminum alkyl-rare earth coordination catalyst for diene polymerization since 1960. In 1981, financially
The discovery and development of Ziegler-Natta catalyst has opened a new era of polymer science and industry. The Changchun Institute of Applied Chemistry of the Chinese Academy of Sciences has been engaged in developing a new family of Ziegler-Natta type catalysts, which is composed of rare earth compound and aluminum alkyl-rare earth coordination catalyst for diene polymerization since 1960. In 1981, financially