发明名称 |
Processes for increasing polymer inherent viscosity |
摘要 |
Disclosed are processes for preparing polyareneazole polymers including contacting a molar excess of a free base in water with a terephthalic acid salt to form an aqueous mixture, adjusting the pH to precipitate a monomer complex, contacting the monomer complex with metal powder, and polymerizing the monomer complex. Polyareneazoles, filaments and yarns are also disclosed.
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申请公布号 |
US7683122(B2) |
申请公布日期 |
2010.03.23 |
申请号 |
US20060390939 |
申请日期 |
2006.03.27 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY;MAGELLAN SYSTEMS INTERNATIONAL, LLC |
发明人 |
SIKKEMA DOETZE JAKOB;RODINI DAVID J.;ADKINS QINGHONG FU;ALLEN STEVEN R.;MARTIN GEORG VALENTIN;DEMUTH RALF;SCHELHAAS MICHAEL |
分类号 |
C08J3/14;C08F6/12;C08K3/32 |
主分类号 |
C08J3/14 |
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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