FIELD: organic chemistry, chemical technology. SUBSTANCE: invention describes method for preparing polybenzimidazoles by polycondensation of equimolecular amounts of bis- hydroxamic acids of the general formula: 
wherein R means 
, 
, 
with bis-sulfamides of the formula: 
wherein 
means 
, 
, 
wherein X means σ-bond, 
, -O- in medium of high- boiling polar solvents at temperature 20-150 C for 8-10 h. Invention provides using bis-sulfamides instead aromatic tetraamines. EFFECT: improved preparing method. 2 cl, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PREPARING POLYBENZIMIDAZOLES | 2002 |
|
RU2224770C2 |
| NITROGEN-BEARING POLYMERS AS HEAT-RESISTANT MATERIALS AND METHOD OF OBTAINING SAME | 1979 |
|
SU751059A1 |
| PROCESS FOR PREPARING POLYBENZIMIDAZOLES | 0 |
|
SU1046254A1 |
| METHOD OF PRODUCING AROMATIC POLYBENZIMIDAZOLES | 2010 |
|
RU2440345C1 |
| 0 |
|
SU532608A1 | |
| POLYMER COMPOSITION FOR MANUFACTURING PROTON-CONDUCTING MEMBRANES | 2008 |
|
RU2364439C1 |
| METHOD OF OBTAINING POLYBENZIMIDAZOLS BASED ON 4,4'-DIPHENILPHTHALIDEDICARBONIC ACID | 2007 |
|
RU2332429C1 |
| POLYMERIC COMPOSITION | 1991 |
|
RU2022984C1 |
| NITROGEN-BEARING POLYMERS AS HEAT-RESISTANT MATERIALS AND METHOD OF OBTAINING SAME | 1979 |
|
SU784301A1 |
| POLYETHER-KETONE SYNTHESIS METHOD | 2008 |
|
RU2388768C2 |
