发明名称 |
2,5-substituted tetrahydrofurans as anionic initiator modifiers |
摘要 |
A method for improving the initiation efficiency during the anionic polymerization of 15 to 100 percent weight of a vinyl aromatic hydrocarbon monomers and 0 to 85 percent by weight of a conjugated diene monomer by conducting the polymerization in the presence of a catalytically effective amount of: (a) an organolithium initiator and (b) a 2,5-substituted tetrahydrofuran modifier having the structural formula: <IMAGE> wherein R1 and R1' are independently H or an alkyl group containing 1 to 4 carbon atoms and R2 and R2' are alkyl group containing 1 to 4 carbon atoms.
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申请公布号 |
US5385994(A) |
申请公布日期 |
1995.01.31 |
申请号 |
US19930139667 |
申请日期 |
1993.10.22 |
申请人 |
BRIDGESTONE CORPORATION |
发明人 |
GRAVES, DANIEL F.;HALL, JAMES E.;SHUTTLEWORTH, WILLIAM J. |
分类号 |
C07D307/06;C08F4/42;C08F4/48;C08F12/04;C08F297/04;(IPC1-7):C08F4/48 |
主分类号 |
C07D307/06 |
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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