Polyethylene glycol ether

The materials shown and described above were generally prepared from the nucleophilic phenoxide or alkoxide and the appropriate bromide. The syntheses of a variety of such compounds were detailed in a report which appeared in 1977. In the same report, complex stability and complexation kinetics are reported. Other, detailed studies, of a similar nature have recently appeared" . Vogtle and his collaborators have also demonstrated that solid complexes can be formed even from simple polyethylene glycol ethers . Crystal structures of such species are also available... 

Coupling agents such as hydroxymethyl benzene or a polyoxyeth-ylene-polyoxypropylene ether [polypropylene glycol-polyethylene glycol ether, POE-POP ether, e.g., Ucon synthetic lubricant from Union Carbide Corp.)] and hydrotropes, such as an imidazoline car-boxylate may also be needed to hold the formulation together. 

The use of polyethylene glycol ethers in a process in which a high viscosity emulsion is formed on contact with residual crude oil has also been tested as a means of plugging thief zones using surfactants (248-250). Precipitation of sodium pectate when fresh water solutions contact brine has been proposed as a method of plugging high permeability zones (251). 

Nonionic Polyoxyethylene (/ ) dodecyl ether (Ci2EO ) or polyethylene glycol ether n = 4 (tetraoxyethylene dodecylether, C 2E04) or tetraethyleneglycol dodecyl ether (TEGDE) or polyoxyethylene(4) lauryl ether (POELE) Polyoxyethylene (n)... 

BritP 586224(1947) CA 41, 7120(1947) (Inclusion of 0.4% of polyethylene glycol ether contg at least 8 carbon atoms)... 

Allyl polyethylene glycol ethers Non ionic Used to produce surface active, water-soluble silicone ethers (antifoams) ... 

Ng [2,3] prepared bioerodible copoly(ortho esters) consisting of the Step 2 product with monomethyl polyethylene glycol ether termini and 1,4-cyclohex-anedimethanol and either an a-hydroxy carboxylic acid, (II), or A -methyl-di-ethanol amine (III), for use as bioerodible matrices for the sustained release of biologically active agents. Other dioxalane bioerodible analogues were prepared by Ng [4] in an earlier investigation. 

Glycofurol 75 tetraglycol a-(tetrahydrofuranyl)-co-hydroxy-poly(oxyethylene) tetrahydrofurfuryl alcohol polyethylene glycol ether. 

The surfactant used in the experiments was a polyethylen glycol ether of BASF company with the trade name Lutensol T03. General structure of the reagent is R0(CH2CH2 0)x H where R is iso-Cu H2 and x is 3,5,7,8,12.. The reagent has a nonionic character and does not give much froth in water. It was used as 500 g/t of solid material in the suspension. 

Large quantities of hydrocarbon oils may be solubilized by aqueous lamellar dispersion of nonionic surfactants of the type n-dodecyl polyethylene glycol ether (1) in the case of the lamellar phase of n-dodecyl tetraethylene glycol ether UP to 55% (W/W) of n-... 

Ethylene diamine tetra-acetic acid (EDTA) Polyethylene glycol ethers Carbox5unethyl cellulose salts... 

Drzymala, J., Mielczarski, E., and Mielczarski, J.A.. Adsorption and flotation of hydrophilic and hydrophobic materials in the presence of hydrocarbon polyethylene glycol ethers, Colloids Surf. A, 308, 111. 2007. 

Fatty alcohol ether sulfate Zschim Fatty alcohol ether sulfate Zschim Alkyl polyethylene glycol ether Zschim Alkyl polyethylene glycol ether Zschim... 

Nonyl phenyl polyethylene glycol ether containing 9 moles of ethylene oxide (Union Carbide Chemicals Co.). 

Individual polyethylene glycol ether derivatives of long-chain alcohols are supplied as fine chemicals for scientific use. They can be separated, for example, by preparative column... 

From this point of view, polyethylene glycol ethers of higher alcohols or alkylphenols like Neonol P1215-6 (oxo synthesis of higher alcohols C12—C15 with 6 EO) have a broader industrial basis. In addition to the 0x0 synthesis of higher alcohols C12—Cjs obtained by other methods can be used to obtain this type of surfactants. However, this type of products forms emulsions having a low coalescence stability and an aqueous serum is formed within few days. 

A recent study on electrokinetic removal of ethyl benzene from contaminated clay showed a promising use of anionic-nonionic mixed surfactants. Surfactant addition resulted in 1.6-2.4-fold more removal than afforded by EK alone, and a mixed surfactant system, including 0.5% SDS and 2.0% PANNOX 110 (nonyl phenol polyethylene glycol ether) permitted optimal ethyl benzene removal (98%). This indicated that, in the presence of mixed surfactant micelles, the zeta potential of the soil particles significantly increased compared with that seen when anionic surfactant micelles were formed, and electrolytic mobility was thus enhanced (Yuan and Weng, 2004). The use of anionic-nonionic mixed surfactants in EK will also improve the desorption and migration of PAHs. 

Nonionic surfactants such as polyoxyethylated fatty alcohols (such as Emul-phor ON-870 from GAP), alkyl phenyl polyethylene glycol ethers (such as the Tergitols from Union Carbide) and polyoxyethylated octylphenol may be used as protective colloids along with anionic surfactants or, in some cases, as emulsifiers in their own right. The block copolymers of polyoxyethylene and polyoxypropylene (Pluronics) solubilized vinyl acetate. Polymerization takes place at the interface of the surfactant-monomer droplet and the aqueous phase [151]. 

Chem. Descrip. Linear C-12/14 fatty alcohol polyethylene glycol ether, 2 EO... 

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