FIELD: foam polyimides. SUBSTANCE: method involves interaction of tetracarboxylic acid or its dianhydride with lower aliphatic aqueous solution, at heating, addition of mixture of 4,4'-diaminodiphenylmethane and 4,4'-diaminodiphenylsulfone taken at mole ratio (0.8-0.2): (0.2-0.8) at room temperature, surface-active substance followed by thermic working and frothing ground reaction product. Synthesized foam polyimides can be used for internal finishing of transport facilities. EFFECT: improved method of synthesis. 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF SYNTHESIS OF ELASTIC AND FIRE-RESISTANT FOAM POLYIMIDES | 1990 |
|
SU1824885A1 |
| METHOD FOR PRODUCTION OF FLEXIBLE AND INCOMBUSTIBLE POLYAMIDE FOAMS | 1989 |
|
RU2028323C1 |
| COMPOSITION FOR PREPARING POLYIMIDE FOAM MATERIALS | 1993 |
|
RU2081134C1 |
| ULTRA-FILTRATING HEAT AND CHEMICAL RESISTANT POLYIMIDE MEMBRANE AND METHOD OF ITS | 2006 |
|
RU2335335C2 |
| METHOD OF PREPARING POLYIMIDE MOULDING POWDER WITH HIGH IMIDISATION DEGREE | 2008 |
|
RU2397973C1 |
| METHOD FOR OBTAINING MELT POLYIMIDE BINDER OF POLYMERIZATION TYPE | 2017 |
|
RU2666734C1 |
| COMPOSITION FOR PREPARING FOAM POLYIMIDE | 1992 |
|
RU2024562C1 |
| METHOD FOR PRODUCING POLYIMIDE COMPOSITE MATERIAL REINFORCED WITH NANOSTRUCTURED BORON CARBIDE (VARIANTS) | 2016 |
|
RU2656045C2 |
| HEAT-RESISTANT FILM ADHESIVE | 2021 |
|
RU2760127C1 |
| HIGH-STRENGTH HIGH-MODULUS THERMAL-, FIRE-RESISTANT POLYIMIDE THREAD AND METHOD FOR PRODUCTION THEREOF | 2017 |
|
RU2687417C1 |
