Detail of "142-16-5"

Reference

Composition and method for reducing the surface tension of aqueous fluids

Composition and method for reducing the surface tension of aqueous fluids. Thompson, James L. (Dow Chemical Co., USA). U.S. US 4018689 19 Apr 1977, 3 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: E21B043-26. NCL: 252008550C. APPLICATION: US 74-527576 27 Nov 1974. DOCUMENT TYPE: Patent CA Section: 51 (Fossil Fuels, Derivatives, and Related Products) Section cross-reference(s): 46, 66 The surface tension of aq. fluids used in the treating of subterranean deposits to stimulate petroleum recovery (e.g., acidizing and fracturing) is reduced by introducing an aq. compn. contg. C8F17SO2NHC3H6N+Me3 I- (A) [1652-63-7], a surfactant (B) contg. polyethylene glycol monostearate [9004-99-3] 57, Na bis(2-ethylhexyl) sulfosuccinate [577-11-7] 19.2, bis(2-ethylhexyl) maleate [142-16-5] 3, isooctyl alc. [26952-21-6] 10.1, iso-PrOH [67-63-0] 4.5, and H2O 6.2 wt.%, and a 3rd surfactant selected from an adduct of a C10-12 alc. with 5 mol ethylene oxide, an adduct of trimethyl-1-heptanol with 7 mol ethylene oxide, and mixts. of these adducts. Thus, the surface tension of 1000 gal brine (8 wt.% NaCl and 2.5 wt.% CaCl2) was reduced from 74.3 to 22.8 dyne/cm by introducing 2 gal of a soln. contg. H2O 2502, iso-PrOH 1967, surfactant B 2655, an adduct of trimethyl-1-heptanol with 7 mol ethylene oxide 836, and A 40 wt. parts.

Surfactants containing salts of alkyl sulfosuccinates

Surfactants containing salts of alkyl sulfosuccinates. Peterka, Vlastimil; Haumer, Jaroslav; Kepl, Jiri; Vodak, Zdenek; Nikl, Stanislav; Vacha, Jaroslav (Czech. ). Czech. CS 204938 B 1 Jul 1983,6 pp. (Czech). (Czechoslovakia). CODEN: CZXXA9. CLASS: IC: C11D001-04. APPLICATION: CS 79-8685 13 Aug 1979. DOCUMENT TYPE: Patent CA Section: 46 (Surface Active Agents and Detergents) The title products, useful as laundry agents, are prepd. by sulfonation of alkyl maleates in the presence of a sugar and the corresponding alkyl alc. Thus, a mixt. of 72 parts bis(2-ethylhexyl) maleate [142-16-5] contg. 1% 2-ethylhexanol, 8 parts 25% NH4OH, 5 parts of an aq. 70% sorbitol [50-70-4] soln. 2915-53-9 and 10041-19-7 are also in the experiment., 21 parts NaHSO3, 71 parts water, and 18 parts product recycled from the preceding run was heated at 97-102° for 2.2 h. After clearing with 3 parts of a 40% aq. HCHO soln., the final product was a 50% aq. soln. of bis(2-ethylhexyl) Na sulfosuccinate [10041-19-7] (97% conversion). .