Process Economics Program Report 76
Published: Apr-72
This report discusses the technology and economics of
producing aromatic amines. The compounds selected for evaluation are aniline,
diphenylamine (DPA), N,N'-diphenyl-p-phenylenediamine (DPPD), and xylylenediamine
(XDA). Aniline is the largest volume aromatic amine. Its major market areas
are rubber chemicals, isocyanates, dyestuffs, and more recently polyamide fibers.
Diphenylamine and DPPD are used as antioxidants for elastomers. Xylylenediamine
is a monomer for polyamide fibers, and the precursor of xylylene isocyanate.
The report also includes the technology and economics of mononitro-benzene (MNB)
manufacture. Mononitrobenzene, the raw material of aniline, is consumed to a
large extent captively, and because of that realistic sales prices are not available.
The integrated MNB-aniline production concept adopted herein avoids arbitrary
sales or transfer prices for MNB. Isophthalic acid (IPA) is the raw material
of XDA. The economics of IPA production was developed in order to present the
XDA economics on a true cost basis. This allows a direct comparison with the
economics of XDA production via ammoxidation of xylene (Process Economics Program
Report 1A). Supplemental data are included in Appendixes A, B, and C. Information
combined in this report was collected from patents, technical papers, and trade
journals that appeared between 1947 and July 1971. Data received from BASF and
Lonza A.G. were valuable reference points for the economics of aniline production
developed by SRI.
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