公开(公告)号：DE3124401A1

公开(公告)日：1983-01-27

申请号：DE3124401

申请日：1981-06-22

Applicant: BASF AG

Inventor： REITER UDO DIPL CHEM DR ,  KOVACS JENOE DIPL CHEM DR ,  SCHENCK HANS-UWE DIPL CHEM DR

IPC: C08G73/00 ,  B29C43/00 ,  C08G73/10 ,  C08J3/14 ,  C08L79/08

Abstract: A polyimide powder particularly suitable for the production of moldings by high pressure sintering is prepared by mixing a solution of an aromatic polyimido-acid, obtained by a conventional process and having an intrinsic viscosity of 1.5 to 2.5 dl/g, in an aprotic dipolar organic solvent, with a water-entraining agent, heating the mixture to the boiling point of the entraining agent, azeotropically distilling off the water formed, filtering off the polyimide powder which precipitates, washing it if appropriate, and drying it.