Laurate, surfactants

Calester. [Pilot] Alpha sulfo methyl laurate surfactant for toilet soq)s, laundry detergents, automotive ckaners, foamers, emulsifiers. 

Oleth-2 Oleth-10 PEG-20 sorbitan isostearate PEG-200 trihydroxystearin surfactant, fruit scrubbing Sucrose laurate surfactant, fruit washing DEA-lauryl sulfate Magnesium lauryl sulfate TEA-lauryl sulfate surfactant, functional monomers Cocamidopropyl hydroxysultaine N,N-Dimethyl-N-lauric acid-amidopropyl-N-(3-sulfopropyl)-ammonium betaine N,N-Dimethyl-N-myristyl-N-(3-sulfopropyl)-ammonium betaine N,N-Dimethyl-N-palmityl-N-(3-sulfopropyl)-ammonium betaine N,N-Dimethyl-N-stearyl-N-(3-sulfopropyl)-ammonium betaine... 

Dodoxynol-7 Dodoxynol-10 Nonoxynol-19 PEG-12 ditallate surfactant, specialties Sodium trideceth-7 carboxyiate surfactant, specialty salts Decyl diphenyloxide disulfonic acid surfactant, spice air fresheners Sodium Cl4-16 olefin sulfonate surfactant, spray cleaners a-Sulfo methyl laurate surfactant, steam cleaners Sodium capryloamphopropionate surfactant, steam cleaning Disodium capryloamphodiacetate surfactant, stool softeners Dioctyl calcium sulfosuccinate surfactant, styrene Ammonium nonoxynol-4 sulfate surfactant, styrene-acrylic Ammonium laureth sulfate surfactant, substantive foaming hair care Sodium/TEA-lauroyl hydrolyzed keratin surfactant, substantive foaming nail care Sodium/TEA-lauroyl hydrolyzed keratin surfactant, substantive foaming skin care Sodium/TEA-lauroyl hydrolyzed keratin surfactant, substantive hair conditioners Soyamidopropyl dimethylamine surfactant, suppository bases PEG-60... 

Methyl laurate (surfactant) Rosin, no clean and lead-free solder flux residues... 

Synperonic PE/L121 surfactant, personal care soaps a-Sulfo methyl laurate surfactant, personal care w/o emulsions... 

An application of an LC-SFC system has been demonstrated by the separation of non-ionic surfactants consisting of mono- and di-laurates of poly (ethyleneglycol) (23). Without fractionation in the precolumn by normal phase HPLC (Figure 12.18 (a)) and transfer of the whole sample into the SFC system, the different homologues coeluted with each other. (Figure 12.18(b)). In contrast with prior fractionation by HPLC into two fractions and consequent analysis by SFC, the homologues in the two fractions were well resolved (Figures 12.18(c) and 12.18(d)). 

Figure 12.18 LC-SFC analysis of mono- and di-laurates of poly (ethylene glycol) ( = 10) in a surfactant sample (a) normal phase HPLC trace (b) chromatogram obtained without prior fractionation (c) chromatogram of fraction 1 (FI) (d) chromatogram of fraction 2 (F2). LC conditions column (20 cm X 0.25 cm i.d.) packed with Shimpak diol mobile phase, w-hexane/methylene chloride/ethanol (75/25/1) flow rate, 4 p.L/min UV detection at 220 nm. SFC conditions fused-silica capillary column (15 m X 0.1 mm i.d.) with OV-17 (0.25 p.m film thickness) Pressure-programmed at a rate of 10 atm/min from 80 atm to 150 atm, and then at arate of 5 atm/min FID detection. Reprinted with permission from Ref. (23).

The phase behavior of a-ester sulfonates has been studied in detail with methyl laurate and methyl palmitate [58]. In both cases, at higher temperatures, as the surfactant concentration increases, there is a transition from an isotropic solution to a hexagonal liquid crystalline phase and finally, at high surfactant concentrations, to a lamellar liquid crystal (Fig. 4). The crystal/liquid-crys-tal phase transition occurs at even higher temperatures as the chain length increases. On the other hand, chain length has practically no influence on the... 

On the other hand, this azo form was observed in other surfactant micelle solutions such as sodium laurate (11) and nonionic surfactants (16). The maximal absorption wavelength is at 535 nm (quinoidal form) in the SDS solution, while at 450 nm (azo one) in the CmPOEn soutlon. 

Figure 1 shows the results obtained by Francois and Skoulios (27) on the conductivity of various liquid crystalline phases in the binary systems water-sodium lauryl sulfate and water-potassium laurate at 50 °C. As might be expected, the water-continuous normal hexagonal phase has the highest conductivity among the liquid crystals while the lamellar phase with its bimolecular leaflets of surfactant has the lowest conductivity. Francois (28) has presented data on the conductivity of the hexagonal phases of other soaps. She has also discussed the mechanism of ion transport in the hexagonal phase and its similarity to ion transport in aqueous solutions of rodlike polyelectrolytes. 

FIGURE 2.5 Hypoglycemic effect of insulin administered orally to normal rats by means of coated soft capsules containing an absorption-enhancing formulation (8 IU porcine insulin, 4 mg sodium laurate (Ci2) and 16 mg cetyl alcohol) two capsules RSI (open stars) 2 capsules RS2 (open circles) 2 capsules RS2 + 1 capsule surfactant post-insulin administration (open square) insulin i.p. 4 IU (close circles) 2 placebo capsules (no insulin) (close stars). Each point is the mean SD of five animals for insulin administration and of four animals for controls. RSI and RS2 are capsules coated with various mixtures of Eudragits RS, S, and L. (From Touitou, E. and Rubinstein, A., Int. J. Pharm., 30, 95, 1986. With permission from Elsevier.)... 

Wherever possible, the soaps and surfactants were added to the natural rubber latex as dilute aqueous solutions. The cases where this was not possible were (a) ethylene oxide-fatty alcohol condensates of low ethylene oxide fatty alcohol mole ratio, and (b) sparingly-soluble fatty-acid soaps such as lithium laurate and calcium soaps. The former were added as pastes with water, the latter as dry powders. In all cases, the latex samples were allowed to mature for about three days at room temperature before their mechanical stabilities were determined. This allowed some opportunity for the attainment of adsorption equilibrium. 

Figure 27. Calcium ion sequestering ability of Cn-n secondary alcohol ethoxyl-ates in combination with an anionic surfactant. Test conditions surfactant concentration nonionics—0.1 wt % anionics—0.1 wt % B = without nonionics (blank). ((-%-) with sodium laurate ( A ) with SDS (-A-) with SAS ( M ) with LAS (- A ) with AOS)...

Flubiprofen o/w ME systems were prepared and evaluated as vehicles for parenteral drug delivery [114]. These systems were formulated using POE 20 sorbitan mono-laurate (Tween 20) as the surfactant and ethyl oleate as the oil phase. Flubiprofen... 

Synthetic surfactants Laureth-9 sodium lauryl sulphate polysorbate 20 and 80 PEG-8 laurate sorbitan laurate glyceryl monolaurate saponins (e.g., Quillaja saponins) membrane interaction extraction of membrane proteins and lipids solubilization of peptides... 

There are only a limited number of studies comparing the systematic changes in the structure of enhancers and their influence on the oral mucosal membranes. For example, for insulin absorption in rats, it was shown that sodium glycocholate, laureth-9, sodium laurate, and sodium lauryl sulphate were approximately equipotent. Several non-ionic surfactants having a Ci2 hydrophobic tail were much less effective.P 24]... 

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