发明名称 |
AUF LÖSUNGSMITTEL BASIERENDE RÜCKGEWINNUNG UND WIEDERVERWERTUNG EINES POLYAMIDMATERIALS |
摘要 |
<p>A process is disclosed for recovering polyamide material from post-industrial and post-consumer products containing the polyamide material and insoluble materials. The process includes the steps of: (a) contacting the post-industrial and post-consumer products with a suitable solvent in a reactor; (b) dissolving and partially depolymerizing the polyamide material in the solvent to form a solution by operating the reactor at a predetermined temperature and pressure and for a time sufficient to decrease the average molecular weight of the depolymerized polyamide to less than 90% of the initial molecular weight; (c) separating the insoluble material from the solution; and (d) recovering the depolymerized polyamide from the separated solution. The process may also include the step of repolymerizing the depolymerized polyamide.</p> |
申请公布号 |
DE60121948(D1) |
申请公布日期 |
2006.09.14 |
申请号 |
DE2001621948 |
申请日期 |
2001.06.07 |
申请人 |
E.I. DU PONT DE NEMOURS AND CO. |
发明人 |
MCKINNON, STEPHEN |
分类号 |
B01D39/20;C08J11/24;B01D9/02;C08G69/00;C08G69/04;C08J11/08;C08L77/00 |
主分类号 |
B01D39/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|