DE1727781: An improved process for the preparation of pure high quality 3,3',4,4'-tetraminobiphenyl

Filing Date: 29-12-2003

Issue Date: 06-05-2009

Applicant: CSIR-National Chemical Laboratory (CSIR-NCL), Pune

Patent No: DE1727781

Application No: 60327567.2-08

Inventor(s): Asif Maner, Bavikar Sudhir, Arumugam Sudalai, Swaminathan Sivaram

Country: Germany