Glycol monoethers

Glycolide Glycolide [502-97-6] Glycolipids Glycol monoethers Glycolnitrile [107-16-4... 

Glycol monoether CAS n R Agriculture Chemical Eoo Cleaning Textile Transport... 

Natural Products. Many natural products, eg, sugars, starches, and cellulose, contain hydroxyl groups that react with propylene oxide. Base-cataly2ed reactions yield propylene glycol monoethers and poly(propylene glycol) ethers (61—64). Reaction with fatty acids results ia a mixture of mono- and diesters (65). Cellulose fibers, eg, cotton (qv), have been treated with propylene oxide (66—68). 

Ocfylhexaoxyethylene glycol, monoether micellization of, 24 131t Octyl methoxycinnamate cosmetic uv absorber, 7 846t function as ingredient in cosmetics, 7 829t... 

There have been few studies of the properties of pure compounds in these series of nonionics (5, 6). In our laboratory, the nonionics shown in Table IV and V have been synthesized by the addition of ethylene oxide under the same conditions to pure ethylene glycol monoethers, rather than to secondary or tertiary alcohols. This method has been found to give the same Poisson distribution of OE units and to be suitable for evaluating quantitatively the structural effects of the hydrophobe (7 ). 

The most common surfactants for analytical applications are nonionic (polyoxyethylene glycol monoethers, polyoxyethylene methyl- -alkyl ethers, t-octylphenoxy polyoxyethylene ethers, and polyoxyethylene sorbitan esters... 

An aliphatic glycol monoether cosolvent (e.g., dipropylene glycol monomethyl ether)... 

In this paper we apply basic solution thermodynamics to both the adsorption of single surfactants and the competitive adsorption of two surfactants on a latex surface. The surfactant system chosen in this model study is sodium dodecyl sulfate (SDS) and nonylphenol deca (oxyethylene glycol) monoether (NP-EO o) These two surfactants have very different erne s, i.e. the balance between their hydrophobic and hydrophilic properties are very different while both are still highly soluble in water. 

The nonionic surfactant, nonylphenol deca(oxyethylene glycol) monoether, NP-EO10, supplied by Berol Kemi AB, Stenungsund, Sweden, was of technical grade and used without further purification. The main impurity is free polyethylene oxide. Analysis of the sample gave a polyethylene oxide content of = 3% (4). Note, that polyethylene oxide adsorbs on polystyrene latexes ( ), but a monolayer is reached at solution concentrations that are 10 times the concentration required to obtain a monolayer coverage with NP-EO q. The free polyethylene oxide, therefore, is expected to have negligible influence on the adsorption measurements. 

Glycol, Monoethers of. Several monoethers of glycol, including i so butyl ene glycol-2-mo no-ethylether, bp 148° and isobutyleneglyco 1-2-mo nom ethyl ether, bp 142° were prepd and patented by Edlund. They were claimed to be suitable as solvents for cellulose esters, gums, resins etc... 

Glycol monoether CAS Registry Number n R Industrial application0 ... 

In a subsequent reaction with the solvent, PO produces small amounts of propylene glycol or glycol monoethers. The rate of formation of PO from propylene, H202, and TS-1 in methanol at 313 K is shown in Fig. 22. The selectivity to PO is 85%, but it can be improved by silanization of the catalyst, which reduces the hydrolytic activity, or by addition of small amounts of sodium acetate to the reaction mixture. With these modifications, at 97%... 

Fig. 2.3. Plots of log CMC (in mole fraction units) versus nc, the number of carbon atoms in the alkyl chain. (Temperature in general 25 °C). a. Alkyl hexaoxyethylene glycol monoethers (Data from Ref.113)). b. Alkyl trimethylammonium bromides in 0.5 M NaBr (Data from Refs.28, 114)).

FIGURE 4 Phase diagram for the dodecyl hexaoxyethylene glycol monoether-water system. 

Ethylene glycol dimethyl ether (glyme) Ethylene glycol ether acetates Ethylene glycol monoethers (cellosolves) Furan... 

In the presence of BF-, etherate, 1 isomerizes to y-alkoxyallyltins, which react with aryl aldehydes to form mainly sy/t-a-glycol monoethers (equation II). How-... 

Decarbonylotion of a-alkoxy acid chlorides. The reaction of an a-alkoxy acid chloride with a ketone mediated by Sml2 results in a 1,2-glycol monoether and liberation of CO. The necessary molar ratios are 2 1 4, acid chloride/ketone/ Sml2.4... 

Since their commercial introduction in 1926, glycol ethers have become valuable as industrial solvents and chemical intermediates. Because glycol monoethers contain a -OCH2CH2OH group, they resemble a combination of ether and ethyl alcohol in solvent properties. The most common... 

The reaction of isoprene monoxide with a range of alcohol pronucleophiles in the presence of the ligand (3 mol%), Pd2dba3.CHCl3 (1 mol%) and triethylboron (1 mol%) gave the glycol monoethers in excellent yield and enantiomeric excess. The use of p-methoxybenzyl alcohol and 3-nonyl-3,4-epoxybut-1-ene afforded an intermediate that was converted into (—)-malyngolide (eq 8). ... 

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