Reference

Doublebase ballistic modifiers

Doublebase ballistic modifiers. Camp, Albert T.; Csanady, Elmer R. (United States Dept. of the Navy, USA). U.S. US 4420350 A 13 Dec 1983, 5 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C06B025-26. NCL: 149098000. APPLICATION: US 80-155894 2 Jun 1980. DOCUMENT TYPE: Patent CA Section: 50 (Propellants and Explosives) The plateau burning rates of double-base propellants are improved by incorporating ~0.2-7 wt.% Cu, Pb, Sn, and/or Bi chelates of 2-hydroxy-4-alkoxybenzophenone and/or 2,2'-dihydroxy-4,4'-dialkoxybenzophenone. Thus lead-2,4-dihydroxybenzophenone chelate (I) [88922-27-4] was prepd. from PbO and 2,4-dihydroxybenzophenone [131-56-6] and a propellant was formulated by the water-slurry process and consisting of nitrocellulose [9004-70-0] 49, nitroglycerin [55-63-0] 42, 2-nitrodiphenylamine [119-75-5] stabilizer 2.0, di-Pr adipate 1.6, basic cupric b-resorcylate [69868-09-3] 2.5, I 2.5, C black 0.3, and candelilla wax 0.1 wt.%. Ballistic tests showed a clear improvement in plateau burning rates over propellants using Pb and Cu salicylates and resorcylates.Except for chemicals metioned above, 20936-31-6 and 89086-93-1 are also used. .

Composite double-base propellants

Composite double-base propellants. (Asahi Chemical Industry Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58125683 A2 26 Jul 1983 Showa, 9 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C06D005-00; C06B045-18. APPLICATION: JP 82-5351 19 Jan 1982. DOCUMENT TYPE: Patent CA Section: 50 (Propellants and Explosives) In the manuf. of composite double-base propellants by mixing grains contg. nitrocellulose [9004-70-0] and a stabilizer with a casting agent contg. nitroglycerin [55-63-0], a stabilizer, and a urethane binder, molding, and hardening, the grains are pretreated with an isocyanate compd. to increase the pot life of the mixt. 55-63-0 and 9004-70-0 are also in the experiment. Thus, 48 parts of mixt. contg. nitroglycerin 75, di-Et phthalate 5, 2-nitrodiphenylamine [119-75-5] 2, and Polylite OD-X-106 18 parts were mixed with hexamethylene diisocyanate 2.3 and dibutyltin laurate 0.11 part, deaerated, mixed with 52 parts fluid balls pretreated with hexamethylene diisocyanate, molded, and hardened to give a propellant. The pot life was increased to 2 h from 0.5 h by treating the fluid balls with hexamethylene diisocyanate. .