Invention Grant
- Patent Title: Process for the preparation of nitrogen-containing polymers
- Patent Title (中): 含氮聚合物的制备方法
-
Application No.: US539481Application Date: 1995-10-05
-
Publication No.: US5703199APublication Date: 1997-12-30
- Inventor: Andree Henze , Gordon Calundann
- Applicant: Andree Henze , Gordon Calundann
- Applicant Address: DEX Frankfurt
- Assignee: Hoechst Aktiengesellschaft
- Current Assignee: Hoechst Aktiengesellschaft
- Current Assignee Address: DEX Frankfurt
- Priority: DEXP4435873.3 19941007
- Main IPC: C08G69/28
- IPC: C08G69/28 ; C08G69/32 ; C08G73/10 ; C08G73/14 ; C08G73/18 ; C08G69/36
Abstract:
To prepare nitrogen-containing aromatic polymers, for example polyamides, polyimides and polybenzimidazoles, polyvalent aromatic carboxylic acids and aromatic diamines and/or aminocarboxylic acids or reactive derivatives thereof are reacted in a high-boiling inert solvent with the addition of a heat-stable dispersing auxiliary, and volatile by-products formed in this reaction are distilled off. When the reaction has ended, the batch is cooled and the polymer formed is filtered off.
Public/Granted literature
- US5059575A Catalyst for the oxidation of carbonaceous particulates and method of making the catalyst Public/Granted day:1991-10-22
Information query
