162 results about "METHYL STEARATE" patented technology

Lamp oil compositions including methyl palmitate, methyl stearate, myristyl alcohol, an alcohol with less than six carbons, preferably ethyl alcohol, and fragrance. Also disclosed herein are lighter fluid compositions which include methyl laurate, methyl stearate, ethyl alcohol and fragrance.

The invention relates to a surfactant used in the production of washing powder, in particular to a method for producing sodium fatty acid methyl ester sulfonate, which solves the problem that the prior art cannot realize continuous, stable industrialized mass production. Hydrogenated palm-methyl stearate is adopted as material, and is sulfonated by SO3 gas on a multi-tube film reactor, steps, such as aging, reesterification, dealcoholization, neutralization, bleaching and vacuum drying, are then sequentially carried out, so that sodium fatty acid methyl ester sulfonate product is obtained, the content of MES is more than 80 percent, the content of disodium salt is less than 5 percent, the content of free oil is less than 2.5 percent, the content of sodium methyl sulfate is less than 8 percent, and color is less than 60 klett(5 percent A.M). Because highly selective catalyst is added in the aging process, the production of deep-colored by-product is reduced; because the reesterification reaction and the bleaching reaction are separately carried out, the safety of reaction is enhanced, and the consumption of methanol as solvent is greatly reduced; because vacuum dealcoholization is carried out before sulfoacid neutralization, industrialized operation can be easily carried out, and meanwhile, the safety problem of methanol in the subsequent bleaching step is eliminated.

A dielectric fluid composition for electrical apparatus comprises a functionalized methyl-12-carboxy methyl stearate having desirable properties including a pour point less than −30° C. and a fire point greater than 250° C. It may be prepared by a process wherein methyl-12-hydroxy methyl stearate is transesterified by reaction with a C3-C20 alcohol to form the hydroxy methyl ester, followed by reaction with a linear or branched C4-C20 carboxylic acid selected from free acid chlorides, fatty acids, carboxylic acid anhydrides, and combinations thereof. The second step serves to end-cap the hydroxyl groups, thereby producing the functionalized methyl-12-carboxy methyl stearate compound that exhibits improved thermoxidative stability and low temperature flowability, as well as increased fire point.

A detection method for tea seed oil adulteration based on ratio of main fatty acids obtains the contents of main fatty acids in pure tea seed oil and adulterated tea seed oil samples by applying gas chromatography and mass spectrometry technology (GC-MS technology), and intuitively presents the distribution characteristic of fatty acids of grease-adulterated pure tea oil by adopting a two-dimensional diagram of methyl cis-oleate/methyl cis-linoleate and methyl palmitate/methyl stearate, so as to qualitatively identify adulteration of tea oil.

The invention belongs to the field of energy technology and food technology, and more particularly relates to a polymer and the application thereof. The polymer is composed of 34.8% of sugar, 63.1% of fat and 1.5% of polypeptide; wherein, the sugar component contains glucose, rhamnose, seminose and glucuronic acid; fat component contains 6.2% of hexadecanoic acid methyl ester and 93.8% of methyl stearate; the polypeptide component respectively contains 11.6% of asparticacid, 6.1% of threonine, 4.8% of serine, 11.7% of glutamic acid, 6.7% of glycin, 9.8% of lactamine, 6.7% of valine, 1.8% of methionine , 4.6% of isoleucine, 9.8% of leucine, 3.4% of tyrosine, 5.9% of phenyl alanine, 3.1% of lysine, 1.3% of histidine, 7.6% of arginine and 5.2% of proline. Sanzanjiao can be taken as drilling mud conditioner and jelly glue polymer used for water shutoff profile control treatment in oil field to be applied to petroleum extraction, and the characteristics of jelling and thickening lead the polymer to be taken as food additive to be widely applied to the food production field.

The invention provides an atomizing agent for cigarettes and a method for increasing the atomizing agent absorbing amount of conventional tobacco leaves. The atomizing agent for the cigarettes is prepared by mixing sorbitol, glycerin, propanetriol, triethylene glycol diacetate, methyl stearate and dimethyl dodecanedioate according to a mass ratio of 1:(10-20):(10-20):(5-10):(2-6):(0.6-1.0). The method comprises the following steps: uniformly mixing formulated tobacco leaves, then performing steam explosion treatment under the conditions that the temperature is 30-50 DEG C, the steam explosiontime is shorter than 0.01 second, the steam pressure is 0.4-0.8 Mpa and the pressure retention time is 10-60 seconds, quickly spreading the prepared atomizing agent into the tobacco leaves after completion of the treatment, then sending to a leaf storage cabinet, balancing the moisture, thoroughly absorbing, and then taking out for shred preparation. By adopting the method, the atomizing agent adding amount of the conventional tobacco leaves can be greatly increased, and the atomizing agent can be applied to the cigarettes which are nonflammable after being heated.

The invention relates to a preparation method for 9, 10-dihydroxy stearic acid and methyl ester, which is characterized in that the oleic acid and the formic acid are mixed uniformly in room temperature; the mixture is added with hydrogen peroxide, and warmed up and separated from water phase; the solvent is recycled through decompression and distillation; the generative reaction admixture is recrystallized with organic solvent, so that the product 9, 10-dihydroxy stearic acid is prepared. The recovered formic acid solution can generate ice-cream calcium formate salt separation by adding calcium oxide and calcium carbonate; subsequently the methyl alcohol and oil of vitriol is arranged into the product 9, 10-dihydroxy stearic acid for a reflux reaction, and then is rotated and vaporized out the water phase and oil phase for being washed to be neutral, thereby the 9, 10-dihydroxy stearic acid methyl ester product is generated through dehydration. The invention has the advantages of clean process, safe implementation, easy operation, full utilization of the reactant, reduced waste emission, effective utilization of the low-concentration hydrogen peroxide, and favorableness to large-scale production.

The invention relates to a foaming agent, specifically to a hydroxyl compound type composite foaming agent and a preparation method thereof. The hydroxyl compound type composite foaming agent at leastcomprises the following preparation raw materials in parts by weight: 2 to 20 parts of a nonionic surfactant, 1 to 5 parts of an anionic surfactant, 0.1 to 5 parts of a foam stabilizer, 0.5 to 1 partof a thickening agent and 69 to 96.4 parts of water, wherein the nonionic surfactant is one ore more selected from the group consisting of polyether polyol and lignin polyether polyol; and the anionic surfactant is one or more selected from the group consisting of a dodecyl anionic surfactant, lauryl sulfate triethanolamine, secondary alkyl sodium sulfonate, fatty alcohol sodium hydroxyethyl sulfonate, N-sodium lauroyl sarcosine, amide polyoxyethylene ether magnesium sulfate, dodecanol polyoxyethylene ether disodium sulfosuccinate, sodium alpha-olefin sulfonate, sodium fatty alcohol ether sulfate, sulfonates of ethoxylated fatty acid methyl ester, alcohol ether carboxylate, methyl stearate polyoxyethylene ether sodium sulfonate and isooctyl phosphate.

The invention relates to a gas chromatography method for qualitatively and quantitatively detecting soya fatty acid components. The gas chromatography method is characterized in that fatty acids in soya seeds are extracted by adopting methods of heating and methylating and detected by adopting a gas chromatography, and the actual content of the fatty acid components in the soya seeds can be accurately detected according to a standard curve and a regression equation of standard samples of five fatty acid methyl esters (methyl palmitate, methyl stearate, methyl oleate, methyl linoleate and methyl linolenate). The method is applicable to qualitative and quantitative analysis of the fatty acid components of the soya seeds, is simple and convenient to operate, easy to control and easy to popularize, can be used for detecting relative percentage content of the five fatty acid components and accurately calculating the absolute content of each fatty acid component in the soya seeds, and has an important meaning in soya fatty acid detecting and breeding.

The invention relates to ultrathin nonwoven fabric, which is prepared by adopting an electrostatic spinning method. The ultrathin nonwoven fabric is monolayer, has the thickness of 60-136 mu m, and is prepared from the following spinning raw materials: a fiber main body raw material and phase-change temperature-adjusting microcapsules, wherein the fiber main body raw material comprises polyphenyl thioether and polyamide at a mass ratio of (50-55):(58-62); the phase-change temperature-adjusting microcapsules are contained in the fiber main body raw material, and are prepared by adopting an interfacial polymerization method with polyurea type resin as the capsule wall; and the phase-change material contained in the microcapsules is a mixture of capric acid, lauric acid, methyl stearate and C17-19 straight-chain alkanes. According to the invention, the ultrathin nonwoven fabric contains the phase-change temperature-adjusting microcapsules, thus the ultrathin nonwoven fabric has obvious adjusting effect on temperature; and at the same time, the ultrathin nonwoven fabric contains nano vanadium dioxide, which is an infrared-sensitive material and can project or reflect infrared according to the external infrared change, thus the ultrathin nonwoven fabric has a temperature controlling action.

The invention relates to a method for reducing the freezing point of biodiesel, which belongs to the technical field of fine chemical industry. In the method, mixture of branched methyl-based methyl stearate without any double bond is added in biodiesel according to a specific proportion, the methyl can be in various positions, and the biodiesel with a low freezing point can be obtained after complete mixing. The addition of methyl isostearate into the biodiesel enhances the stability and oxidation resistance of the biodiesel, and also improves the engine lubricating property. Moreover, the compounding process is simple and safe.

The invention discloses a stearic acid 2,2,6,6-tetramethyl-4-piperidine ester of a light stabilizer and a production method thereof. Methyl stearate and 2,2,6,6-tetramethyl-4-hydroxypiperidine are used as raw materials and react under the condition that a catalyst exists to obtain the stearic acid 2,2,6,6-tetramethyl-4-piperidine ester; and the catalyst is tetrabutylammonium bromide with the use amount being 0.8-4.8 percent of the methyl stearate. By utilizing the methyl stearate and the 2,2,6,6-tetramethyl-4-hydroxypiperidine as raw materials to synthesize the stearic acid 2,2,6,6-tetramethyl-4-piperidine ester and adopting the tetrabutylammonium bromide as the catalyst, the invention simplifies the separation and purification processes and has short reaction time, high product yield which reaches over 95 percent, higher product purity, great reduction of energy consumption, little environment pollution and low cost, thereby being a relatively ideal process for realizing industrial production.

The invention discloses a preparation method of stearoylbenzoylmethane and an application thereof to molding processing of thermoplastic resin, which belong to preparation of a compound which only contains a CO radical and is only connected with a carbon atom or a hydrogen atom, and particularly relate to preparation of beta-diketone. The stearoylbenzoylmethane is obtained by undergoing a condensation reaction on methyl stearate and acetophenone in an alkaline environment, wherein the methyl stearate is obtained by taking stearic acid and methanol as raw materials, taking sulfuric acid as a catalyst and undergoing an esterification reaction. The invention provides a preparation method of the stearoylbenzoylmethane, which has the advantages of low costs of major raw materials, short condensation reaction period, small quantity of byproducts, high yield of stearoylbenzoylmethane, complete recycling of a solvent, nontoxicity of a crystallization solvent and high crystal yield. The condensation yield is up to 88 percent, the solvent is completely recycled, the crystallization solvent is nontoxic and environmentally-friendly, the crystal yield is up to 95 percent, and the purity of a product, i.e., stearoylbenzoylmethane is up to 98 percent. The invention further provides a method for applying the stearoylbenzoylmethane to molding processing of thermoplastic resin.

The invention discloses a C18 series fatty acid and C20-C22 series fatty acid fine separation method. The method includes: pretreating the raw material animal and vegetable oil by a ionic liquid to obtain high-yield and low-acid value biodiesel, i.e. a mixture of a variety of fatty acid methyl esters, with the process being simple, green and environment-friendly; then placing the obtained biodiesel in a pressured reduced rectification tower kettle, taking the ionic liquid as an extraction agent to conduct extraction pressured reduced rectification, and collecting methyl stearate, methyl oleate and methyl linoleate or eicosapentaenoic acid methyl ester and docosahexaenoic acid methyl ester with mass percentage purity of over 98% at the tower top. The method provided by the invention makes up the blank of the prior art, has a convenient operation process, provides the operation process for separation of long-chain fatty-acid methyl esters with a same carbon number, different double-bond numbers and poor heat sensitivity, and lays the foundation for fine separation of fatty acid methyl ester.

The invention discloses an intra-tower pump suction type high vacuum distillation method and device for precise separation of C16-C22 fatty acids. The high vacuum distillation method comprises the following steps: firstly taking heat sensitive materials with a high additional value, such as animal and vegetable oil, as raw materials, adopting plasma liquid and the like as an esterification and transesterification catalyst, and obtaining mixture of multiple fatty acid methyl esters with high yield in one step; secondly, in a distillation tower with almost zero pressure drop, carrying out high vacuum distillation operation on the formed multiple fatty acid methyl esters through catalysis; and finally separating and purifying, so that single fatty acid methyl esters such as timnodonic acid methyl ester, docosahexoenoic acid methyl ester, methyl palmitate, methyl stearate, methyl oleate and methyl linoleate with the mass fraction more than 98% respectively are obtained. The whole technological method is simple and clear, the operation is simple, the equipment cost is low, the energy is saved, and the enlargement can be easily realized.

The invention relates to a preparation method of low-calorie functional fat, belonging to the research field of functional lipid. The method comprises the following steps: tributyrin and methyl stearate are used as raw materials and 1,3-specific Lipozyme RMIM is used as catalyst to perform ester exchange reaction under the conditions of reduced pressure, heating and rotating, cooling, dissolving and centrifuging are performed after some time to remove enzyme, and rotary steaming is performed to obtain the low-calorie functional fat. The conversion rate of methyl stearate in the reaction product, the content of low-calorie functional fat (SSL and LLS) and the content of the unexpected product glycol tristearate are used as indexes and the factors such as reaction time, substrate molar ratio, the additive amount of enzyme and reaction temperature are optimized to determine the preparation technology. The method lays foundations for the regulations of the short carbon chains and long-carbon-chain fatty acid of triglyceride and the construction of the low-calorie functional fat processing technology which can meet different demands on processability.

The invention discloses temperature sensitive ink, which is suitable for offset printing or flexography on a rotary press. The temperature sensitive ink consists of following three parts by weight percent: totally about 48 percent of petroleum resin (large amount), paraffin (small amount) and pigment (trace amount), totally about 41 percent of methyl stearate (large amount), methyl palmitate (small amount) and 2, 6-ditertiary butyl-p-hydroxytoluene (trace amount), and totally about 11 percent of methylbenzene and dimethylbenzene. If necessary, about 3 percent of fluorescent powder can be added. By adopting the special formula, the ink is suitable for offset printing or flexography on the rotary press on which common temperature sensitive ink cannot be used. Moreover, the ink has the temperature sensitive color changing function or not only the temperature sensitive color changing function but also the fluorescence detection function.

The invention discloses a method for extracting methyl stearate from stearoylbenzoylmethane (SBM) raffinate. The method comprises the following steps: mixing the SBM raffinate with methanol according to a volume ratio of 1: 2-6; heating an obtained mixture to a temperature of 50 to 56 DEG C under stirring and maintaining for 20 min to ensure full extraction; then cooling the mixture to a temperature of 33 to 36 DEG C under stirring and standing the mixture for layering; carrying out separation to remove a lower layer; continuing to cool an upper layer to a temperature of 10 DEG C; carrying out vacuum filtration; heating and melting a filter cake, adding 2 times volume of methanol and repeating the above-mentioned procedures of extraction, layering, separation and vacuum filtration; rinsing the filter cake twice to three times; and heating the filter cake to a temperature of 100 DEG C to remove water so as to obtain methyl stearate. According to the invention, methyl stearate is extracted from SBM raffinate by using an extractive crystallization method, methanol used twice in the extraction process can be repeatedly used after distillation, the lower layer obtained after separation can be reused as raffinate, and the advantages of small energy consumption and low cost are obtained.

The invention relates to composite ultra-thin non-woven fabric which is prepared by adopting an electrostatic spinning method. The composite ultra-thin non-woven fabric comprises three layers, namely an intermediate layer and a first surface layer and a second surface layer which are respectively located at both sides of the intermediate layer, wherein the intermediate layer is made of polyester fiber with average diameter of 760-910 nm, the polyester fiber contains a phase-change temperature-adjusting microcapsule, the phase-change microcapsule is prepared by adopting an interfacial polymerization method and taking polyurea type resin as a capsule wall, and the phase-change material contained in the microcapsules is a mixture of capric acid, lauric acid, methyl stearate and C17-C19 straight-chain paraffins. In the composite ultra-thin non-woven fabric, because the intermediate layer is prepared from the polyester fiber containing the phase-change temperature-adjusting microcapsule, the composite ultra-thin non-woven fabric has a significant temperature adjusting effect; and at the same time, the fiber adopted by the first surface layer contains nanoscale vanadium dioxide, and vanadium dioxide is an infrared sensitive material and can project or reflect infrared according to the change of environment infrared, therefore, the composite ultra-thin non-woven fabric has a temperature control effect.