Reference

Micellar solution for petroleum recovery

Micellar solution for petroleum recovery. (Teikoku Oil Co., Ltd.; Kao Corp., Japan). Jpn. Kokai Tokkyo Koho JP 59044489 A2 12 Mar 1984 Showa, 9 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: E21B043-22. APPLICATION: JP 82-155726 7 Sep 1982. DOCUMENT TYPE: Patent CA Section: 51 (Fossil Fuels, Derivatives, and Related Products) Section cross-reference(s): 38, 46 Microemulsified micellar solns. are prepd. from inorg. waters of a wide salinity range using a surfactant compn. contg. polyethylene glycol-polypropylene glycol [9003-11-6], an alkylbenzenesulfonate, a polyethylene glycol alkylphenyl ether sulfate, and a 2nd polyethylene glycol-based nonionic surfactant. Thus, S-5029 (ethylene oxide-propylene oxide copolymer sucrose ether [52434-08-9]) 2, MeOH [contg. 70 wt.% Ca dodecylbenzenesulfonate (Neoplex C 70) [26264-06-2]] 9.2, aq. 25 wt.% Na polyethylene glycol lauryl ether sulfate (Emal 20C) [53663-56-2] 6.1, and Emulgen 911 [9016-45-9] 22.7 g were mixed to give a surfactant compn. A micellar soln. contg. 100 mL aq. 4 wt.% NaCl and 20 g of a surfactant compn.-crude oil mixt. was stable at 72°.

Solutions of surface active calcium and magnesium sulfates and sulfonates

Solutions of surface active calcium and magnesium sulfates and sulfonates. Ranny, Mojmir; Zbirovsky, Miroslav; Stepanek, Zdenek; Lohynsky, Ivan; Novak, Ladislav (Czech. ). Czech. CS 206952 B 1 Jul 1984,3 pp. (Czech). (Czechoslovakia). CODEN: CZXXA9. CLASS: IC: C01F001-00. APPLICATION: CS 78-2108 1 Apr 1978. DOCUMENT TYPE: Patent CA Section: 46 (Surface Active Agents and Detergents) Title agents, useful as emulsifiers, are prepd. in the form of clear solns. by treating a dispersion of a reactive Ca2+ and/or Mg2+ salt in nonionic surfactant-contg. org. solvents with an equimolar amt. of acid sulfate or sulfonate. Thus, a soln. contg. polyethylene glycol isononylphenyl ether [37205-87-1] 5.4, cumene 58, and Me2CHCH2OH 5.4 parts was mixed with a soln. of 3.6 parts Ca(OH)2 in 2 parts water and this dispersion was gradually treated with 30 parts dodecylbenzenesulfonic acid to give a clear salt [26264-06-2] soln.