Pyridine → 5,5'-Carbonyldi(2-benzofuran-1,3-dione)--1-(4-aminophenyl)-1,3,3-trimethyl-2,3-dihydro-1H-inden-5-amine (1/1)

Participants

Reaction Steps

In a 500-ml four-neck flask equipped with a thermometer, a stirrer and a calcium chloride tube, 32.8 g (0.08 mole) of 2,2-bis(4-aminophenoxyphenyl)propane, 5.08 g (0.02 mole) of 3,3',5,5'-tetramethyl-4,4'-diaminodiphenylmethane and 100 g of dimethylacetamide were placed and stirred. Subsequent to dissolution of the diamine, 41.8 g (0.08 mole) of 1,10-(decamethylene)bis(trimellitate dianhydride) and 6.44 g (0.2 mole) of benzophenonetetracarboxylic dianhydride were added little by little while cooling the flask over an ice bath. Subsequent to the completion of the addition, they were reacted for 3 hours over the ice bath and further for 4 hours at room temperature. Then, 25.5 g (0.25 mole) of acetic anhydride and 19.8 g (0.25 mole) of pyridine were added, followed by stirring at room temperature for 2 hours. The reaction mixture was then poured into water. A precipitated polymer was collected by filtration and dried, whereby a polyimide resin (A3) was obtained.

Provenance & Evidence