Table 2: Polyimides and copolyimides obtained from the polymer reaction of polyimides containing phenolic OH groups and 12GA.

Tetracarboxylic dianhydrideaDiamine12GAbSolubility Molecular WeightdConversione
mol%mol%in NMPdLg−1Mn MwMw/Mn%

Cyclohexene-DAHABDDE
208040Soluble0.1415400308002.098.7
5050100Soluble0.1117200342002.0 57.9
1000200PSf24100g64800g2.7g49.1

6FDAHABDDE
208040Soluble0.61518001100002.066.4
5050100Soluble0.4531400707002.223.0
1000200PSf36800g74400g2.0g12.2

DSDAHABDDE
208040Soluble0.3017100375002.294.4
5050100Soluble0.3523700617002.678.3
1000200PSf77100g155400g2.0g64.7

aEquimolar amount of tetracarboxylic dianhydride was used to the total amount of diamines. bEquimolar amount of 12GA was used to the total amount of phenolic OH groups, and the reaction was proceeded using a equimolar amount of DCC as a catalyst. cMeasured at 0.5 g dL−1 in NMP at 30°C. dDetermined by SEC in NMP containing 10 mM LiBr calibrated with a series of polystyrenes as a standard. eCaluculated from the intensity ratio of long-chain alkyl groups and aromatic protons. fPartially soluble. gData of soluble parts in NMP.