发明名称 |
Conjugated diene/monovinylarene block copolymers with multiple tapered blocks. |
摘要 |
<p>A method for preparing polymodal tapered block copolymers in a polymerization process by sequentially charging: (a) an initiator and monovinylaromatic monomers in the presence of a randomizer; (b) an initiator and monovinylaromatic monomers; (c) a mixture of monovinylaromatic and conjugated diene monomers; (d) a mixture of monovinylaromatic and conjugated diene monomers; (e) an initiator and monovinylaromatic monomers; (f) a mixture of monovinylaromatic and conjugated diene monomers; (g) a mixture of monovinylaromatic and conjugated diene monomers; (h) conjugated diene monomers; and (i) a coupling agent. The copolymers are particularly useful for packaging applications which require good environmental stress crack resistance.</p> |
申请公布号 |
EP0600405(A1) |
申请公布日期 |
1994.06.08 |
申请号 |
EP19930119192 |
申请日期 |
1993.11.29 |
申请人 |
PHILLIPS PETROLEUM COMPANY |
发明人 |
MOCZYGEMBA, GEORGE ANTHONY;STACY, NATHAN EDWARD;KNIGHT, NANCY R. |
分类号 |
C08F297/04;(IPC1-7):C08F297/04;C08L53/02;C08L25/04;C08G81/02 |
主分类号 |
C08F297/04 |
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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