Published April 1972
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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