Detail of "88-88-0"

Reference

Optimization of polymer-analog transformations of poly(p-aminostyrene) and its copolymers

Optimization of polymer-analog transformations of poly(p-aminostyrene) and its copolymers. Svetkin, Yu. V.; Donya, A. P.; Sokhina, S. I.; Sinyavskii, V. G. (Makeev. Inzh.-Stroit. Inst., Makeevka, USSR). Deposited Doc., SPSTL 1162 Khp-D82, 9 pp. Avail. SPSTL (Russian) 1982. DOCUMENT TYPE: Report CA Section: 35 (Chemistry of Synthetic High Polymers) The reaction of poly(p-aminostyrene) (I) [25086-42-4] with picryl chloride (II) [88-88-0] and the diazoamino coupling of I were optimized using statistical methods. Optimal conditions for the reaction of I with II in the presence of PhNMe2 and DMF were reaction temp. 94°, reaction time 4.5 h, and I-II molar ratio 0.3o, giving 61% conversion of I. The diazoamino coupling of I to give triazene crosslinks was optimal at 41° and reaction time 10 h, giving a product contg. 14.76% N. The reactions were of interest for prepg. structurally colored material and polyazo dyes.

Scale-up of high explosive 5,7-dinitro-1-picrylbenzotriazole

Scale-up of high explosive 5,7-dinitro-1-picrylbenzotriazole. Sanchez, J. A. (Los Alamos Natl. Lab., Los Alamos, NM, USA). Report, LA-9961-T; Order No. DE84015704, 106 pp. Avail. NTIS From: Energy Res. Abstr. 1984, 9(19), Abstr. No. 38367 (English) 1984. DOCUMENT TYPE: Report CA Section: 50 (Propellants and Explosives) Improvements were made to the reaction that produces 5,7-dinitro-1-picrylbenzotriazole (BTX) [50892-90-5]. The reaction was 1st improved on a 10-g scale that increased the yield nearly 3-fold. The reaction was then scaled up to a 50-g scale in which all the improvements of the 10-g research proved beneficial. The improvement to the reaction involved reducing reflux and heating time, substitution of iso-PrOH [67-63-0] for EtOH and NaHCO3 for AcONa, prodn. of picryl chloride [88-88-0] from picric acid, introduction of water to aid in soly. and anal. of BTX both chem. and for explosive sensitivity. The cost of producing BTX after improving the reaction is 20% of that before the study.