34398-01-1

Reference

Krafft points and cloud points of polyoxyethylated nonionic surfactants

All Rights Reserved. Krafft points and cloud points of polyoxyethylated nonionic surfactants. Part 1. Krafft points in binary surfactant-water systems. Schott, D. H. (Jenkintown, PA 19046, USA). Tenside, Surfactants, Detergents, 42(6), 356-367 (English) 2005 Carl Hanser Verlag. CODEN: TSDEES. ISSN: 0932-3414. DOCUMENT TYPE: Journal CA Section: 36 (Physical Properties of Synthetic High Polymers) Section cross-reference(s): 46 The soly. of polyoxyethylated nonionic surfactants (POSs) in water is limited by an upper and a lower crit. temp. The former, called cloud point (CP), is the temp. at which POSs ppt. from soln. on heating because of excessive dehydration of their polyoxyethylene (POE) moieties. The latter, called Krafft point (KP), is the temp. at which POSs crystallize from soln. on cooling because of increased alignment and attraction between their hydrocarbon chains. It occurs less frequently: even if the POSs were capable of crystg., ice often crystallizes first. Aq. solns. of over 100 POSs were examd. by obtaining their CPs and ascertaining whether they exhibit KPs. KPs were found in polyoxyethylated primary alcs. and fatty acid amides and in polyethylene glycol esters of fatty acids. Only surfactants with strictly linear hydrocarbon chains crystallize, exhibiting KPs. Any branching, including that in polyoxyethylated linear secondary alcs., prevents crystn. Crystn. only occurs when the no. m of carbon atoms in the hydrocarbon chains equals or exceeds 12. The KPs are then proportional to m.In this experiment, several chemicals are used like 34398-01-1 and 917920-01-5 In homologous series, the surfactants most prone to crystg. are those with borderline soly., which possess just enough oxyethylene groups to promote soly. in cold water. Large POE moieties depress or eliminate KPs. .

Stable aryl ethoxylate based cleaning composition in concentrate and dilute form

Stable aryl ethoxylate based cleaning composition in concentrate and dilute form. Griese, Greg G. (Ecolab, Inc., USA). U.S. US 6846793 B1 25 Jan 2005, 8 pp., Cont.-in-part of U.S. 6,767,881. (English).There are some reagents with their cas registry numbers 827032-46-2 and 34398-01-1 are used in this study. (United States of America). CODEN: USXXAM. CLASS: ICM: C11D001-70. ICS: C11D001-72; C11D003-37. APPLICATION: US 2003-643570 19 Aug 2003. PRIORITY: US 2003-2003/391639 19 Mar 2003. DOCUMENT TYPE: Patent CA Section: 46 (Surface Active Agents and Detergents) The stable aryl ethoxylate based cleaning compn. includes: a surfactant having an HLB value from 1 to 10; and a compd. of formula I: where x is an integer from 2 to 6; yr is an integer from 0 to 5; R is a bond or (C1-C4)alkylene; R1 is a hydrogen, halo, aryl, (C1-C4)alkyl, heteroaryl, cycloalkyl, or heterocycle; R2 is independently selected from hydrogen, halo, (C1-C4)alkyl, (C1-C4)alkoxy, (C2-C4) alkenylene; and wherein the compd. of formula I is present from greater than 10 to 90% based on total wt. of surfactant having an HLB value from 1 to 10 and the compd. of formula I. Methods for forming stable aq. and non-aq. solns. of the same are also provided. Thus, a cleaning compn. contains 22.5% Tomadol 1-3, 7.5% Ethylan HB4, 29% triethanolamine, 27% linear dodecylbenzene sulfonic acid and 14% Barlox 12. .