IN383756: A process for the preparation of an aromatic tetramine and polymers derived therefrom
The invention discloses a process for the preparation of an aromatic tetraamine, namely, {5,5’,6,6’-tetraamino-3,3,3’,3’-tetramethyl-1,1’-spirobi[indane]}. Further, the invention discloses a method for the preparation of polybenzimidazole polymers using the aforesaid aromatic tetraamine which exhibits intrinsic porosity.
Patent No:
IN383756
Application No:
201711015473
Filing Date:
02-05-2017
Issue Date:
10-12-2021
Applicant:
CSIR-National Chemical Laboratory (CSIR-NCL), Pune
Inventor(s):
Vikas Kumar; Swaminathan Sivaram; Ver Avadhani Chilukuri
IPC Classification:
B01D 71/82
Country:
India
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