| 发明名称 | Polyimide powder having high thermooxidative stability | ||
| 摘要 | The invention relates to shaped bodies having high thermooxidative stability, which can be produced by means of direct forming and hot compression molding processes, and to a novel polyimide powder for production thereof and to a process for production of this polyimide powder. | ||
| 申请公布号 | US9469048(B2) | 申请公布日期 | 2016.10.18 |
| 申请号 | US201414571451 | 申请日期 | 2014.12.16 |
| 申请人 | EVONIK FIBRES GMBH | 发明人 | Ungerank Markus;Maurer Christian;Danzer Dieter;Roegl Harald;Eder Juergen |
| 分类号 | C08G73/10;B29B9/12;C08K3/00;C08K5/00;C08L79/08;B29L31/00;B29K79/00 | 主分类号 | C08G73/10 |
| 代理机构 | Reed Smith LLP | 代理人 | Reed Smith LLP ;Evain Eric J.;Cox Ryan P. |
| 主权项 | 1. A shaped body produced from a raw powder comprising a polyimide powder comprising a polyimide polymer, wherein the polyimide polymer is composed of an aromatic tetracarboxylic dianhydride component (A) and a diamine component (B), wherein the aromatic tetracarboxylic dianhydride component (A) consists of 60 to 100 mol % of 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA) and 40 to 0 mol % of pyromellitic dianhydride (PMDA) and the diamine component (B) consists of p-phenylenediamine (p-PDA), m-phenylenediamine (m-PDA) and 4,4′-diaminodiphenyl ether (ODA), and wherein the diamine component (B) consists of 60 to 99 mol % of PDA and 40 to 1 mol % of ODA, wherein PDA consists of p-PDA and m-PDA, and wherein the ratio of p-PDA to m-PDA is in the range from 5:95 to 95:5. | ||
| 地址 | Schorfling am Attersee AT | ||