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US5990256A Long chain branched syndiotactic vinyl aromatic polymers 失效
长链支化间同立构乙烯基芳族聚合物

Long chain branched syndiotactic vinyl aromatic polymers
摘要:
Long chain branched syndiotactic vinyl aromatic polymers can be obtained by polymerizing the vinyl aromatic monomer in the presence of a small amount of a multifunctional monomer under conditions such that a syndiotactic vinyl aromatic polymer is produced.
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