发明名称 |
Process for the preparation of crystalline vinylaromatic polymers with a predominant syndiotactic structure |
摘要 |
Process for the preparation of crystalline vinylaromatic polymers with a predominant syndiotactic structure which involves polymerizing vinylaromatic monomers in the presence of a catalytic system comprising: a titanium complex having general formula (I): <IMAGE> (I) wherein R1, R2, R3 and R4, the same or different, represent a hydrogen atom or a C1-C20 alkyl radical or a C6-C20 arylalkyl or aryl radical, on the condition that at least one of these is different from hydrogen.
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申请公布号 |
US5721327(A) |
申请公布日期 |
1998.02.24 |
申请号 |
US19970805247 |
申请日期 |
1997.02.24 |
申请人 |
ENICHEM S.P.A. |
发明人 |
SANTI, ROBERTO;COMETTI, GIUSEPPE;PO', RICCARDO;CARDI, NICOLETTA |
分类号 |
C08F4/643;C08F12/04;(IPC1-7):C08F4/643;C07F7/00 |
主分类号 |
C08F4/643 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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