Alkyl polyethyleneglycol

To identify isomeric thienothiophenes, the chromatographic behavior of mono- and dialkyl-substituted thienothiophenes 1 and 2 was studied.Thienothiophene 1 and its alkylated derivatives were shown to be characterized by greater retention volumes than the corresponding thienothiophenes 2. The linearity of the retention volume vs. boiling point relationship allowed the thienothiophene isomers to be identified. Studies on solution thermodynamics of thienothiophenes in the stationary phase showed that isomeric thienothiophenes 1 and 2 do not differ appreciably in their heats of solution. For example, the calculated heats of solution of 5-ethyl-3-methylthieno[2,3-h]thiophene (26) and 5-ethyl-3-methylthieno[3,2-b]thiophene (27) in polyethyleneglycol adipate are both about 16 kcWmole. ... 

Ralufon F Series Polyethyleneglycol-alkyl-(3-sulphopropyl)-diether, K-salt... 

One of the most Illustrative example possible Is the change In water solubility when polyethyleneoxlde was added to a W/0 mlcroemulslon stabilized by a polyethyleneglycol alkyl ether surfactant (16). The maximum water solubilized by adding tetraethyleneglycol dodecyl ether to decane could be approximated by the equation... 

CA 73, 79082s (1970) [Low-density colloidal Dynamite was prepd by mixing 0.02—3% of a mixt of (30 70)-(80 20) poly(oxyethylene) alkyl allyl ether—polyethyleneglycol monostearate. The setting point was <30°, and thus the mixing proceeded easily]... 

Dialkyl diselenides. The synthesis involves treatment of an alkyl halide with Se and Zn dust in aqueous NaOH under nitrogen at 80°C. Access to dibenzyl dise-lenides by a phase-transfer process (Se, NaOH, polyethyleneglycol-400/benzene, 65°C) is also convenient (9 examples, 73-96%). 

Alkylphenol polyethyleneglycol ethers Fatty acid alkanol amides Alkyl amides... 

Figure 6 The principal phase diagram of water, hydrocarbon, and the nonionic surfactant polyethyleneglycol alkyl ether. W = water O = hydrocarbon O/W =oiI-in-water microemulsion W/0 = water-in-oil microemulsion 3P = three-phase region T = temperature. (After Shinoda [18-24].)...

Kunieda, H., Ushio, N., Nakano, A., and Miura, M. (1993) Three-phase behavior in a mixed sucrose alkanoate and polyethyleneglycol alkyl ether system. J. Colloid Interface Sd., 159, 37 4. 

N-Tallowalkyl-N,N -dimethyl-N,N -polyethyleneglycol-propylenebis-ammonium-bis-methosulfate. See PEG-3 tallow propylenedimonium dimethosulfate N-(Tallow alkyl) dipropylenetriamine N-Tallow alkyidipropylenetriamines. See Tallow dipropylene triamine... 

Also in the field of hydrogels, (meth)acrylates play an important role. Since there is quite a number of hydrophilic methacrylate-based monomers available, radical copolymerization with an appropriate crosslinking monomer leads to network formation. The most widely used monomers are 2-hydroxyethyl methacrylate HEMA, 2-aminoethyl methacrylate and the alkyl derivatives, amethacrylamid and the alkyl derivatives, ethyleneglycol dimethacrylate EGDMA, and polyethyleneglycol dimethacrylate PEGDMA. 

Nikko Chemicals Inc., A Summary of Research Papers using Homogeneous Polyethyleneglycol Alkyl Ether, Tokyo (1986). 

Tallow all laminium, N-carboxymethyl-N,N-bis (2-hydroxyethyl)-, hydroxides, inner salts. See Dihydroxyethyl tallow glycinate N-tallowalkyM,3Kliaminopropane diacetates. See Amine acetate Tallow alkyl dimethylamine. See Dimethyl tallowamine N-Tallowalkyl N,N dimethyl>N,N >polyethyleneglycol-propylenebis-ammonium-bis-methosulfate. See PEG>3 tallow propylenedimonium dimethosul-fate... 

Cationic - quatemary ammonium compounds. Anionic alkyl sulfonates and phosphonates. Nonionic ->Fatty amine ethoxylates or ->fatty alcohol ethoxylates, - fatty acid amides, esters of fatty acids with - glycerol, polyethyleneglycol and - sorbitol. 

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