发明名称 |
Process for production of styrene polymers |
摘要 |
A process for production of styrene polymers of high syndiotactic configuration is disclosed, comprising polymerizing styrene or styrene derivatives by the use of a catalyst comprising: (A) a titanium compound, e.g., at least one compound selected from those represented by the formulae: TiR1aR2bR3cX14-(a+b+c) and TiR1dR2eX13-(d+e) (all the symbols are as defined in the appended claims); and (B) a contact product of an organoaluminum compound and a condensation agent, e.g., a product resulting from modification of trimethylaluminum with water. Because of such high syndiotactic configuration, the styrene polymers are greater in thermal resistance and solvent resistance than conventional atactic polystyrene.
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申请公布号 |
USRE35289(E) |
申请公布日期 |
1996.07.02 |
申请号 |
US19930070057 |
申请日期 |
1993.06.01 |
申请人 |
IDEMITSU KOSAN COMPANY LIMITED |
发明人 |
ISHIHARA, NOBUHIDE;KURAMOTO, MASAHIKO;UOI, MICHITAKE |
分类号 |
C08F12/04;(IPC1-7):C08F4/642;C08F12/08 |
主分类号 |
C08F12/04 |
代理机构 |
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地址 |
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