Abstract
The title polyimides are prepd. from 3,3',4,4'-benzophenone dianhydride and primary aliph. diamines contg. substantially 1,4-diaminobutane.
Original language | English |
---|---|
Patent number | EP522649 A1 |
Publication status | Published - 13 Jan 1993 |
C.E. Koning (Inventor), L.M.J. Teuwen (Inventor), E.W. Meijer (Inventor)
Research output: Patent › Patent publication
Original language | English |
---|---|
Patent number | EP522649 A1 |
Publication status | Published - 13 Jan 1993 |