Other

Yuchun Song

Yang Li

Jinzong Yang

Yongjun Lu

Mingchu Gu

Yurong Wang

Dingyi Hong

Hongde Xu

Xingjun Lu

Zhanxia Lv

Li Ping Yang

Jian Ding

The present invention relates to multiblock interpolymers having the following symmetric structures and processes for their preparation: Y-X-Y, wherein Y represents a block of a random copolymer of conjugated diene and monovinyl aromatic monomer; and X represents a block of butadiene homopolymer, a block of isoprene homopolymer, or a block of butadiene/isoprene copolymer, and processes for the preparation thereof. The present multiblock interpolymers have in the same molecule both a rubber block of random copolymer of conjugated diene and monovinyl aromatic monomer and a rubber block selected from blocks of butadiene homopolymer, isoprene homopolymer and butadiene/isoprene copolymers, and hence possess excellent properties of the both two kinds of rubbers, and can be used widely as integrated rubber materials with excellent property balance, the present processes can simply prepare the above integrated rubber material in situ in a single reactor.

Multiblock interpolymers and processes for the preparation thereof

Butadiene/isoprene/monovinyl aromatic monomer heptablock copolymers and method for the preparation thereof

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Beijing, China

Yuchun Song