629-25-4Relevant academic research and scientific papers
Accelerated saponification of methyl dodecanoate with aqueous sodium hydroxide solution in the presence of alcohols in a silicone rubber tube as a flow-type reactor
Kamiouji, Atsushi,Hashimoto, Keiji,Kominami, Hiroshi,Ito, Seishiro
, p. 509 - 513 (2009)
Saponification of methyl dodecanoate with an aqueous sodium hydroxide solution in the absence and presence of alcohols was studied using a tubular reactor made of silicone tube to elucidate effects of alcohol addition on the saponification. The reaction r
Systems based on nonionic amphiphilic compounds: Aggregation and catalytic properties
Ablakova, Yu. R.,Mirgorodskaya,Zakharova, L. Ya.,Valeeva
, p. 784 - 789 (2010)
The micellization properties, solubilization capability, and catalytic effect of conventional nonionic surfactants and amphiphilic compounds of oligomeric (Tyloxapol) and polymeric (Synperonic F-68, Pluronic F-127) structure were compared. The systems studied demonstrate a marked catalytic effect toward basic hydrolysis of p-nitrophenyl laurate, which exceeds the effect of aqueous alkali solutions by two orders of magnitude. Correlations between the solubilization capacity of aggregates and their catalytic effect were observed. The maximum efficiency was found for the Tyloxapol solution. The synergetic enhancement of the catalytic effect was observed for the mixed Tyloxapol-cetyltrimethylammonium bromide systems in the presence of small amounts of cationic surfactant
Continuous preparation method of metal fatty acid salt
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Paragraph 0060; 0061; 0062; 0063; 0108; 0109; 0110; 0111, (2019/04/04)
The invention relates to a continuous preparation method of metal fatty acid salt. The continuous preparation method of the metal fatty acid salt comprises the step of continuously enabling fatty acidand metal hydroxides to react in a solvent and prepare the metal fatty acid salt in a microchannel reactor or pipeline reactor. The preparation method disclosed by the invention can control the particle diameter of a product material to be within 70nm and 1000nm, and the particle diameter of the product material can be adjusted as needed; the metal fatty acid salt is simple in preparation method,short in technological process, few in three wastes (waste water, waste residues and waste gas), beneficial to environmental protection and suitable for industrial production; the reactor used in theinvention has short reaction time, high safety, high efficiency and large productivity, and can realize continuous production, furthermore, the space utilization rate of workshops is high, and mass production can be realized; by adopting the preparation method disclosed by the invention, the solvent can be recycled to lower the production cost; and the preparation method has high conversion rateof raw materials, stable quality and high purity.
The salts of fatty acids as precursors for preparation of silver nanoparticles in organic solvents
Glushko,Anisimova,Blokhina
, p. 1759 - 1764 (2016/10/24)
The silver salts of fatty acids were studied as precursors for the preparation of colloidal dispersions of silver nanoparticles and UHMWPE (ultra-high-molecular-weight polyethylene) composite with silver nanoparticles, as well as the composition, the spectra and SEM (scanning electron microscopy) results.
GLYCOPYRRONIUM FATTY ACID SALTS AND METHODS OF MAKING SAME
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Page/Page column 22, (2017/01/02)
Novel glycopyrronium fatty acid salts have been developed. Bi-phasic reaction conditions enable the desired counterion exchange reactions between glycopyrronium bromide and fatty acid salts of alkali metals and alkaline earth metals in methods to form glycopyrronium fatty acid salts. In preferred embodiments, an excess of the free fatty acid in the reaction mixture stabilizes the glycopyrronium fatty acid salt and reduces the formation of the impurity, Acid A. In some preferred embodiments, between 0.2 and 1.2 molar equivalent of excess free fatty acid is added to the reaction mixture. In another embodiment, approximately 1.2 molar equivalent of excess free fatty acid is added to the reaction mixture.
Micellization of cetyltrimethylammonium bromide: Effect of small chain bola electrolytes
Pan, Animesh,Sil, Pallabi,Dutta, Sounak,Das, Prasanta Kumar,Bhattacharya, Subhash Chandra,Rakshit, Animesh Kumar,Aswal, Vinod Kumar,Moulik, Satya Priya
, p. 3041 - 3052 (2014/04/03)
Sodium dicarboxylates (or Bola salts) with methylene spacers 0, 2, 4, 6, 8, and 10 were studied in aqueous solution to investigate their influence on the micellization of cetyltrimethylammonium bromide (CTAB). Since bolas with spacer length a??12 are known not to micellize in general, the herein used sodium dicarboxylates were treated as 2:1 amphiphilic electrolytes which reduced surface tension of water (except sodium oxalate with zero spacer) without self-association. Their concentration dependent conductance was also linear without breaks. The bolas affected the micellization of CTAB but acted like salts to decrease its CMC. Their combinations did not form bilayer aggregates as found in vesicles. Nevertheless, they synergistically interacted with CTAB at the air/water interface as revealed from Rosen's thermodynamic model. Hydrodynamic radius (Rh), Zeta-potential (??), and electrical double layer behavior of bola interacted CTAB micelles were assessed. From SANS measurements, micelle shape, shape parameters, aggregation number (N agg), surface charge of the bola influenced CTAB micelles were also determined. NMR study as well supported the non-mixing of bolas with the CTAB micelles. They interacted in solution like amphiphilic electrolytes to influence the surface and micelle forming properties of CTAB. ? 2014 American Chemical Society.
Solubilization and catalytic behavior of micellar system based on gemini surfactant with hydroxyalkylated head group
Mirgorodskaya, Alla B.,Yackevich, Ekaterina I.,Lukashenko, Svetlana S.,Zakharova, Lucia Ya.,Konovalov, Alexander I.
scheme or table, p. 106 - 109 (2012/07/27)
The correlation between aggregation, solubilization and catalytic properties has been found for series of cationic surfactants with hexadecyl radical of both monomeric and dimeric structures. The highest catalytic effect in the series, reaching three orde
PH-sensitive self-propelled motion of oil droplets in the presence of cationic surfactants containing hydrolyzable ester linkages
Banno, Taisuke,Kuroha, Rie,Toyota, Taro
experimental part, p. 1190 - 1195 (2012/06/05)
Self-propelled oil droplets in a nonequilibrium system have drawn much attention as both a primitive type of inanimate chemical machinery and a dynamic model of the origin of life. Here, to create the pH-sensitive self-propelled motion of oil droplets, we synthesized cationic surfactants containing hydrolyzable ester linkages. We found that n-heptyloxybenzaldehyde oil droplets were self-propelled in the presence of ester-containing cationic surfactant. In basic solution prepared with sodium hydroxide, oil droplets moved as molecular aggregates formed on their surface. Moreover, the self-propelled motion in the presence of the hydrolyzable cationic surfactant lasted longer than that in the presence of nonhydrolyzable cationic surfactant. This is probably due to the production of a fatty acid by the hydrolysis of the ester-containing cationic surfactant and the subsequent neutralization of the fatty acid with sodium hydroxide. A complex surfactant was formed in the aqueous solution because of the cation and anion combination. Because such complex formation can induce both a decrease in the interfacial tension of the oil droplet and self-assembly with n-heptyloxybenzaldehyde and lauric acid in the aqueous dispersion, the prolonged movement of the oil droplet may be explained by the increase in heterogeneity of the interfacial tension of the oil droplet triggered by the hydrolysis of the ester-containing surfactant.
A simple and efficient large-scale synthesis of metal salts of medium-chain fatty acids
Zacharie, Boulos,Ezzitouni, Abdallah,Duceppe, Jean-Simon,Penney, Christopher
experimental part, p. 581 - 583 (2010/04/22)
A simple, inexpensive, one-step general procedure was developed for the preparation of medium-chain fatty acid (MCFA) metal salts. This approach offers the advantage of a practical route and is superior to literature methods. Also, it overcomes many of the limitations previously reported for the preparation of fatty acid salts. The potential utility of this method is illustrated by the production of pilot-scale quantities of high-purity (>99.9%) sodium decanoate.
PREPARATION OF METAL SALTS OF MEDIUM-CHAIN FATTY ACIDS
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Page/Page column 5, (2008/06/13)
A process for the preparation of metal salts of a medium-chain length monocarboxylic fatty acid comprises reacting the precursor free fatty acid, dissolved in a suitable solvent, with the appropriate metal salt. The process uses a relatively high concentration of free fatty acid as a soluble reactant and produces metal fatty acid salts at high purity and high yield at a reasonable cost.
