| abstract |
1,151,877. Bis quaternary compounds. EASTMAN KODAK CO. 16 Aug., 1966 [16 Aug., 1965], No. 36619/66. Heading C2C. [Also in Division G2] 1: 6 - Hexamethylene - bis (substituted-pyridinium salts) are made by heating hexamethylene diamine with 2-methyl-4: 6-diphenylpyrylium iodide, 2: 4: 6-trimethylpyrylium perchlorate or with a 2-methyl-4: 6-di-m- (or p-)- tolylpyrylium, or 2: 6-dimethyl -4-(3-pyridyl)- pyrylium halide. 3: 3<SP>1 </SP>- Pentamethylene - bis - (2 - methylbenzo - thiazolium bromide) is made by heating 2-methylbenzothiazole with 1: 5-dibromo-pentane. |