美国氰胺公司和杜邦公司的腈纶生产技术

介绍了美国氰胺公司Santarosa腈纶厂的湿法生产工艺和杜邦公司Waynesboro腈纶厂及Camden腈纶厂的干法生产工艺,并将两者进行了比较。     

Crystal structures of C.I. Disperse Red 65 and C.I. Disperse Red 73

Single crystals of C.I. Disperse Red 65 and C.I. Disperse Red 73 were grown from ethyl acetate and acetonitrile/toluene solutions, respectively, and their crystal structures were determined using single-crystal X-ray diffraction analysis. In each dye molecule, the aminoazobenzene framework is almost planar due to intramolecular H-bonding. In the case of C.I. Disperse Red 65, intermolecular associations occur by π–π stacking and intermolecular H-bonding, resulting in a herringbone-type arrangement; for C.I. Disperse Red 73, toluene molecules stabilize the crystal structure via π–π stacking.