- One step synthesis of fatty acid diethanolamides and methyl esters from triglycerides using sodium doped calcium hydroxide as a nanocrystalline heterogeneous catalyst
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Here, we report the preparation of a series of Na+-doped Ca(OH)2 in nanocrystalline form using a very simple method, and investigation of their catalytic activities towards one step aminolysis and transesterification of used cottonseed oil. The catalyst prepared by doping 3.5 wt% Na in Ca(OH)2 was found to exist in nanocrystalline form (particle size = 25-30 nm) as suggested by TEM and DLS studies and found to have the basic strength of 15.0 2 was used as a solid catalyst towards the aminolysis and transesterification of used cotton seed oil with diethanolamine and methanol, respectively. The catalyst was found to complete the aminolysis and transesterification of a variety of feedstocks even at room temperature and shows excellent reusability.
- Kumar, Dinesh,Kim, Soo Min,Ali, Amjad
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- Investigation on interfacial/surface properties of bio-based surfactant N-aliphatic amide-N,N-diethoxypropylsulfonate sodium as an oil displacement agent regenerated from waste cooking oil
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To regenerate the non-edible waste cooking oil and significantly reduce the negative effect on human being and the environment, a bio-based nonionic-anionic amphoteric sulfonate type surfactant with excellent interfacial and surface properties was synthesized. The interfacial tensions between crude oil and water can reach up to an ultralow value as 0.0040?mN·m??1 without additives. With dynamic light scattering and surface tension, micelles formed by N-aliphatic amide-N,N-diethoxypropylsulfonate bio-based surfactant were studied. This work also systematically investigated the surface activity, adsorption behavior, and thermodynamic parameters (ΔGm0, ΔGads0, ΔHm0, ΔSm0, ΔHmA, ΔCp,m0) of micellization. According to the experimental results, it can be seen that the bio-based surfactant has an excellent surface activity, besides, the micelle formation is entropy and enthalpy co-driven at 25–45?°C. Dynamic light scattering also illustrated the micelle formation. Through this research work, we expect to gain some insights into the phase behaviors of this bio-based surfactant and broaden its great potential oilfield application in enhanced oil recovery.
- Zhang, Yan,You, Qing,Fu, Yang,Zhao, Mingwei,Fan, Hongfu,Liu, Yifei,Dai, Caili
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- Oil soluble molybdenum amine complex and preparation method thereof
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The invention discloses an oil soluble molybdenum amine complex and a preparation method of the oil soluble molybdenum amine complex. The method adopts long-chain saturated fatty acid as the starting material, acylchlorination reaction is carried out on the long-chain saturated fatty acid and thionyl chloride to obtain 1-chloro saturated fatty acid, then amidation reaction is carried out on the 1-chloro saturated fatty acid and diethanol amine to obtain saturated fatty acid amide, and finally complexation is carried out on the saturated fatty acid amide and a molybdenum trioxide solution so as to obtain the oil soluble molybdenum amine complex. The prepared molybdenum amine complex has good oil solubility, solves the poor oil solubility, corrosion resistance, wear resistance and friction reduction and other problems difficult to overcome in existing products, at the same time significantly reduces the adding amount of high sulfur and phosphorus components, and has enormous boosting effect on organic molybdenum series lubricating products currently under research in China, thus promoting nationalization of high-end lubricating oil and efficient utilization and high added value of molybdenum resources.
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- Solvent-free one step aminolysis and alcoholysis of low-quality triglycerides using sodium modified CaO nanoparticles as a solid catalyst
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Here, we report the solvent-free one step preparation of fatty acid amides and fatty acid alkyl esters from low quality triglycerides using a solid catalyst. A series of Na+ modified CaO has been prepared in the form of nanoparticles by a modified incipient-wetness impregnation method, and used as a solid catalyst for aminolysis and alcoholysis of triglycerides. The prepared catalyst 3-NaC/CaO-450 (3 wt% Na impregnated in CaO) was found to exist in nanoparticle form (particle size = 25 nm) as suggested by TEM, DLS and powder XRD studies, have a surface area of 10.9 m2 g-1 (BET method) and found to have the basic strength of 15.0 H- 18.4 as supported by the Hammett indicator test. The catalyst was found to complete the aminolysis (5 wt% catalyst; 6:1 molar ratio of diethanolamine/oil; 110 °C) with excellent recyclability and is also equally efficient for the alcoholysis (5 wt% catalyst; 12:1 molar ratio of methanol/oil; 65 °C) of used cotton seed oil.
- Kumar, Dinesh,Kim, Soo Min,Ali, Amjad
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p. 55800 - 55808
(2016/07/06)
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- Sulfonate type biomass surface active agent and synthetic method
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The present invention relates to the field of organic compound synthesis, and specifically, relates to a sulfonate-type biomass surfactant based on a fatty acid methyl ester and a synthesis method thereof. A main component of city restaurant and kitchen swill waste oil is the fatty acid methyl ester. The sulfonate-type biomass surfactant based on the fatty acid methyl ester is prepared from the following steps: preparing fatty acid alkanolamide, and carrying out a sulfopropyl reaction. The sulfonate-type biomass surfactant based on the fatty acid methyl ester is applied in the field of oil production. The sulfonate-type biomass surfactant synthesized in the present invention has better surface activity and interfacial activity, is non-toxic, non-hazardous and degradable, does less harm to an environment and a stratum layer, can replace a conventional petroleum diesel-based surfactant, achieves purposes of resourceful comprehensive utilization of city restaurant and kitchen swill and added value improvement, and has a good application prospect; in addition, a synthesis reaction condition is mild, a preparation process is simple, and the process is reasonable, applying to scale production; the surfactant is used as an oil washing agent of a chemical flooding system in oil drilling, improves an oil washing effect, and thus improves a crude oil recovery rate.
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Paragraph 0040; 0041
(2017/03/14)
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- Low molecular weight PEI-based biodegradable lipopolymers as gene delivery vectors
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Non-viral gene vectors play an important role in the development of gene therapy. In this report, different hydrophobic chains were introduced into low molecular weight (LMW) PEI-based biodegradable oligomers to form a series of lipopolymers (LPs), and their structure-activity relationships were studied. Results revealed that the nine polymers can condense plasmid DNA well to form nanoparticles with appropriate sizes (120-250 nm) and positive zeta-potentials (+25-40 V). In vitro experiments were carried out and it was found that LP2 showed much higher transfection efficiency both in the presence and in the absence of serum under the polymer/DNA weight ratio of 0.8 in A549 cells.
- Xun, Miao-Miao,Zhang, Xue-Chao,Zhang, Ji,Jiang, Qian-Qian,Yi, Wen-Jing,Zhu, Wen,Yu, Xiao-Qi
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p. 1242 - 1250
(2013/03/29)
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- Method For Producing Fatty Acid Alkanol Amides
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The invention relates to a method for producing fatty acid alkanol amides by reacting at least one amine that contains at least one primary or secondary amino group and at least one hydroxyl group with at least one fatty acid to form an ammonium salt, said ammonium salt being subsequently converted into the alkanol amide by means of microwave radiation.
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Page/Page column 6
(2010/02/17)
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- Method of making hydroxyalkyl amide containing reduced level of unreacted alkanolamine
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A method for reacting alkanolamine with ester in the presence of a metal silicate compound and, optionally, a catalyst, to produce a hydroxyalkyl amide composition with a decreased level of alkanolamine and residual catalyst.
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Page/Page column 3-4
(2008/06/13)
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- Lipase-catalyzed synthesis of fatty acid diethanolamides.
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Diethanolamides are nonionic emulsifiers widely used in industries such as cosmetics and as corrosion inhibitors. Candida antarctica lipase (Novozym 435) was used to catalyze the amidation of various fatty acids with diethanolamine. Contents of fatty acid
- Liu,Nag,Shaw
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p. 5761 - 5764
(2007/10/03)
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- Use of N-acyl derivatives of aminoalcohols for the manufacture of a medicament for the treatment of pathologies involving mast cells
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N-acyl-derivatives of amino alcohols suitable for the therapeutic treatment of pathologies characterized by degranulation of mast cells caused by a neurogen and/or immunogenic hyperstimulation.
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- Tinctorial composition for keratin fibres, based on nitrated benzene dyestuffs
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A process for dyeing keratin fibres is disclosed which involved applying: (a) at least one dyestuff of the formula: STR1 in which R1 and R2 independently designate hydrogen, amino, alkylamino, --NH--aliphatic--(X)m, dialkylamino or --N--(aliphatic-(X)m)2, R3 designates hydrogen, OH, alkoxy or --O--aliphatic-(X)m "aliphatic" designates an aliphatic radical having 2 to 4 free valencies, m designates an integer from 1 to 3 such that if m=1 X represents OH, Cl, OCH3 or OCH2 CH2 OH, or, if m designates 2 or 3, X designates OH, and R4 designates hydrogen, alkyl or halogen, with the proviso that at least one of R1, R2 and R3 is other than hydrogen, and that, if R1 and R2 are both other than hydrogen, R3 designates hydrogen, (b) at least one dyestuff of the formula: STR2 in which R5 designates hydrogen, amino, aminoalkyl, NH-aliphatic-(X)m, N-(alkyl)2, N-(aliphatic(X)m)2, or NHCH2 CH2 NH2, R6 designates hydrogen, OH, alkoxy, O-aliphatic(X)m or O(CH2)n NH2, R7 designates hydrogen, alkyl or halogen, A designates-Y-(CH2)--n, --OCH2 CHOH--CH2 -- or STR3 where R8 designates hydrogen or methyl, Y designates oxygen or --NH-- and n is an integer from 2 to 4, and m "aliphatic" and X are as defined above, with the proviso that, if Y designates --NH-- and R6 is other than hydrogen, R5 designates hydrogen, and, if Y is an oxygen atom, R6 designates hydrogen, the shade and chromaticity of the color obtained with the dyestuff(s) of formula (I) and the shade and chromaticity of the color obtained with the dyestuff(s) of formula (II) being such that ΔH+ΔC is less than or equal to 4.5
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- Method for lowering the free fatty acid content in sebum using certain fatty acid amides
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A method of lowering the free fatty acid content in sebum on the skin surface by topically applying a member of a certain class of fatty acid amides to the affected skin area. Oleic acid diethanolamide is illustrated as a representative of the useful class. After cleansing, rinsing and drying the skin area to be treated, the fatty acid amide formulation is applied thereto and left thereon for beneficial action to occur.
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