Technology Unit

: Aniine Stripping Unit
: DOW PMDA
Short Name: Aniline Stripping
Description: The Product Mixture from the Neutralization Unit is transferred to the Aniline Stripping Unit where the unreacted Aniline and Water are removed to obtain the Residue. The Organic Layer is obtained by distillation at 1 mm Hg and 150°C to remove the unreacted Aniline and to provide the Polyamine Additive to be transferred back to the Second Reactor. The Residue is the Polyamine Mixture comprising Di(aminophenyl)methane and Oligomeric Polymethylene Polyphenyl Polyamines (PMDA).
Link: https://patents.google.com/patent/US4792624A/en