发明名称 |
Method for the preparation of amide oligomers and polybenzazole polymers therefrom |
摘要 |
A polyamide precursor of a polybenzazole polymer is prepared by reacting an aromatic bis(alkenyl)ester with a ring forming, aromatic diamine. The precursor can be prepared in an organic solvent for the monomers to form a soluble polyamide precursor which can be subsequently cyclocondensed to form a PBX polymer. A polybenzoxazole precursor is prepared by the reaction of a bis(alkenyl)ester and a bis(ortho-hydroxyamine). A polybenzazole polymer is easily prepared by heating the polyamide, PBX precursor.
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申请公布号 |
US5322916(A) |
申请公布日期 |
1994.06.21 |
申请号 |
US19930033680 |
申请日期 |
1993.03.16 |
申请人 |
THE DOW CHEMICAL COMPANY |
发明人 |
O'BRIEN, JAMES J.;WOO, EDMUND P. |
分类号 |
C08G69/26;C08G73/22;(IPC1-7):C08G63/00 |
主分类号 |
C08G69/26 |
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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