Water → Phthalic Anhydride

Participants

Reaction Steps

In the “In Situ ClPAMI” procedure, the five-necked flask setup described above was used. The ClPAMI was synthesized in the five-necked flask by reacting two moles of chlorophthalic anhydride with one mole of mPD using oDCB as solvent. The water formed was removed by distillation until a moisture content of less than 20 ppm in the distillate was obtained. Then, HEGCl, a phase transfer catalyst, was added in an amount of 0.6 weight %, based on the ClPAMI amount. More oDCB was distilled off to confirm that the moisture level was less than 20 ppm in the distillate. Then, a slurry of Na2BPA and NaPCP in oDCB in the second flask was transferred to the five-necked flask using the addition tube in communication with the second flask, and polymerization was conducted at 180° C.

Provenance & Evidence