135results about "Fatty acid isomerisation" patented technology

Compositions and methods for forming hydrocarbon products from triglycerides are disclosed. In one aspect, the methods involve the thermal decomposition of fatty acids, which can be derived from the hydrolysis of triglycerides. The thermal decomposition products can be combined with low molecular weight olefins, such as Fischer-Tropsch synthesis products, and subjected to molecular averaging reactions. Alternatively, the products can be subjected to hydrocracking reactions, isomerization reactions, and the like. The products can be isolated in the gasoline, jet and / or diesel fuel ranges. Thus, vegetable oils and / or animal fats can be converted using water, catalysts, and heat, into conventional products in the gasoline, jet and / or diesel fuel ranges. These products are virtually indistinguishable from those derived from their petroleum-based analogs, except that they can have virtually no aromatic, sulfur or nitrogen content, they are derived, in whole or in part, from renewable resources, and can also be derived from domestically available coal and / or natural gas.

Processes for producing hydrocarbons in the gasoline and jet fuel range. The processes involve the thermal decarboxylation of fatty acids, which can be derived from the hydrolysis of triglycerides, which triglycerides can be vegetable oils, animal fats, or combinations thereof. The resulting hydrocarbons can be hydrocracked, and, optionally, isomerized and / or hydrotreated, to yield hydrocarbons in the jet fuel or gasoline range. Where the resulting hydrocarbons include olefinic double bonds, they can alternatively be combined with low molecular weight olefins, and subjected to olefin metathesis to yield hydrocarbons in the jet fuel or gasoline range.

The present invention relates to a process for branching fatty acids or alkyl esters thereof and the use of such branched fatty acid alkyl esters as a major component of biodiesel.

The present invention is directed to methods (processes) and systems for processing triglyceride-containing, biologically-derived oils to provide for base oils and transportation fuels, wherein partial oligomerization of fatty acids contained therein provide for an oligomerized mixture from which the base oils and transportation fuels can be extracted. Such methods and systems can involve an initial hydrotreating step or a direct isomerization of the oligomerized mixture.

The invention relates to a preparation method of conjugated linoleic acid, comprising the following steps: placing the vegetable oil containing linoleic acid glyceride or mixed fatty acid containing linoleic acid or extracted and separated linoleic acid product as raw material, low boiling point alcohols solvent and base catalyst into a reaction kettle and performing the isomerization reaction at a certain temperature. The reaction product is subjected to evaporating, acidifying, extracting and vacuum drying to obtain the conjugated linoleic acid. The conversion of the linoleic acid is above 97.5% and the total yield of the conjugated linoleic acid is above 85%, the proportions of the cis-9, trans-11 isomer and trans-10, cis-12 isomer in the total conjugated linoleic acid are above 96%. The preparation method has features of less reaction steps, easy recovery and repeated use of solvent, simple follow-up separation, low production cost, and easy industrialization.

The present invention relates to a process for the skeletal isomerization of unsaturated linear fatty acids to branched fatty acids which comprises contacting said unsaturated linear fatty acids with at least one large pore zeolite catalyst wherein said at least one zeolite catalyst comprises a material having a three dimensional channel structure having a pore diameter of at least 6.0 Å. In another embodiment, the invention relates to a process for the skeletal isomerization and hydrogenation of unsaturated linear fatty acids to saturated branched fatty acids which comprises contacting said unsaturated linear fatty acids in the presence of an acidic catalyst, wherein said acidic catalyst comprises a mesoporous crystalline phase having pore walls containing primary and secondary crystalline building unit structures.

The invention relates to a process for conjugating two double bonds separated by a methylene bridge in a long-chain alkene, in which the long-chain alkene is isomerized with ana) imino base, orb) iminophosphorane base,as catalyst.

A process for producing paraffins from renewable feedstocks has been developed in which a hydrolysis process is integrated with the hydroprocessing step, producing products suitable for use as transportation fuels. Integration allows the use of common equipment which minimizes cost, raw material consumption, and energy requirements.

The present invention relates to the use of conjugated linoleic acid (CLA) for the topical treatment of fatty deposits and cellulite and to new topical compositions and to cosmetic and dermatological topical compositions for the treatment of fatty deposits and cellulite comprising CLA as well as kits comprising CLA for said treatment.

It is intended to provide a procedure for, in the fractionation of vegetable butter, transesterified fat or oil, isomerized hydrogenated fat or oil, etc. without the use of solvents, obtaining high-concentration component G2U (defined below) by concentrating operation through reduction of the amount of liquid component residue in crystal portion. There is provided a method of dry fractionation of fat or oil characterized in that fat or oil (A) containing components G2U and GU2 is fractionated through crystallization / solid-liquid separation into crystal fraction of concentrated G2U (AF) and liquid fraction of concentrated GU2 (AL), subsequently this crystal fraction (AF) is mixed with liquid G2U-containing fat or oil (B) whose GU2 concentration is lower than that of the liquid fraction (AL) and thereafter the mixture is separated into crystal fraction (BF) and liquid fraction (BL). Provided that G represents a saturated or trans acid form fatty acid residue; U a cis form unsaturated fatty acid residue; and G2U a triglyceride of G2-residue and U1-residue bonded together.

PCT No. PCT / GB96 / 01278 Sec. 371 Date May 12, 1999 Sec. 102(e) Date May 12, 1999 PCT Filed May 30, 1996 PCT Pub. No. WO96 / 38437 PCT Pub. Date Dec. 5, 1996A process for the preparation of lipolic acid (thioctic acid), or a derivative thereof, is one in which a 2-substituted cyclohexanone is transformed in an oxidation reaction to a lactone having formula (I), wherein X is a heteroatom substituent.

The present invention is directed to methods (processes) and systems for processing triglyceride-containing, biologically-derived oils to provide for base oils and transportation fuels, wherein partial oligomerization of fatty acids contained therein provide for an oligomerized mixture from which the base oils and transportation fuels can be extracted. Such methods and systems can involve an initial hydrotreating step or a direct isomerization of the oligomerized mixture.

Processes for preparing conjugated fatty acid glycerides comprising: (a) isomerizing a fatty acid lower alkyl ester corresponding to the general formula (I) in the presence of a basic catalyst at a temperature of from 100 to 160° C., to form a conjugated fatty acid lower alkyl ester: R1CO—OR2  (I)wherein R1CO represents an acyl radical having from 16 to 22 carbon atoms and at least two carbon-carbon unsaturations and R2 represents an alkyl radical having from 1 to 4 carbon atoms; and (b) transesterifying the conjugated fatty acid lower alkyl ester with glycerol to form a conjugated fatty acid glyceride, wherein a lower alkanol corresponding to the general formula R2OH is formed, wherein R2 is as defined above, and the lower alkanol is continuously removed from the transesterification reaction; are described.

A process for preparing saturated branched chain fatty acids or alkyl esters thereof involving subjecting unsaturated fatty acids having 10 to 25 carbon atoms, alkyl esters thereof or mixtures thereof to a skeletal isomerization reaction in the presence of water or a lower alcohol at a temperature of about 240° C. to about 280° C. using a combination of a stericly hindered Lewis base and zeolite as a Brönsted or Lewis acid catalyst, and isolating saturated branched chain fatty acids or alkyl esters thereof or mixtures thereof from the reaction mixture obtained by the skeletal isomerization reaction. The yield of said saturated branched chain fatty acids is ≧70 wt %. The stericly hindered Lewis base is a tertiary amine or phosphine with linear or branched C1 to C6 alkyl or phenyl groups attached thereto.

The invention relates to a method for producing branched biodiesel, which belongs to the technical field of new energy production. The method is characterized in that the method adopts two steps of reaction to convert biodiesel into branched biodiesel. In the epoxidation process, biodiesel is mixed with formic acid, stirred and heated, the mixture of catalyst and hydrogen peroxide is dripped, reacted mixture is transferred into a separating funnel after reaction is finished, the upper layer of liquid is taken and washed by water until becoming neutral, and thereby epoxidized biodiesel is obtained; in the ring-opening reaction, the epoxidized biodiesel is mixed with fatty alcohol, added with catalyst and stirred for reaction, 5 percent of Na2CO3 is added, mixture is washed and then poured into the separating funnel, so that an ester layer is separated out, and after low-boiling point components are evaporated, the branched biodiesel is obtained. The invention improves the oxidative stability and low-temperature fluidity of biodiesel at the same time, has the advantages of low requirement on processing equipment, simple operation, mild reaction condition and the like, and is suitable for industrialized mass production.

A method for preparing biological aviation fuel by utilizing cornus wilsoniana oil comprises the following steps of: filtering and decontaminating the cornus wilsoniana oil, adding softened water with equal temperature at 60-70 DEG C, stirring, centrifugating, taking supernatant, and drying; introducing the refined cornus wilsoniana oil into a stationary bed hydrogenation reaction device, conducting hydrodeoxygenation reaction and somerization reaction to obtain a gas-liquid mixture; condensing the gas-liquid mixture by a condenser, and collecting liquid phase product; distilling the liquid phase product, and collecting fraction between the 150-280 DEG C; introducing the fraction collected in the step (4) into an oil refinement device for high-cleanness refinement, thus obtaining the biological aviation fuel. With the adoption of the method, the obtained biological aviation fuel does not contain sulfur or aromatic hydrocarbon, and is good in quality, high in cleanness, and environment-friendly.

This invention has disclosed a method for preparation of food-grade zeaxanthin through chemical isomerizaton reaction from lutein. The technical issues to be solved in this invention are quite low product yield obtained with existing methods, need of purification treatment process, and inadaptability to industrialized production. The technical schemes of this invention are: a. Mix xanthophyll crystal or its fatty acid ester with food-grade glycol or propylene glycol, for full dissolution under 60-90° C. temperature. Add organic alkali into the mixed liquor acquired from step 1, for isomerization reaction to take place under inertial environment. c. Dilute the reaction solution gained from step b with the mixed solution of deionized water and ethanol, and separate the obtained crystal with conventional separating method. d. Vacuum dries the acquired crystal from step c, to get the zeaxanthin crystal. Glycol or propylene glycol is used in this invention for isomerization reaction under inertial environment after it has fully dissolved raw material under proper temperature. The product yield is reachable to more than 60%, very adaptable to industrialized product, without the need for further purification treatment.

The invention discloses a process for producing conjugated linoleic acid by using rubber seed oil, comprising the following steps of: undergoing an isomerization reaction between the rubber seed oil containing linoleic acid with higher content and a polyethylene glycol 400 solution of alkali under the protection of nitrogen gas, carrying out molecular distillation purification, and adding tertbutylhydroquinone with stronger antioxidation to the product to produce the conjugated linoleic acid. In the invention, the utilized base oil is the rubber seed oil, and the content of the linoleic acid of the rubber seed oil is as high as 32.8%, thus the rubber seed oil is an excellent oil source for preparing the conjugated linoleic acid; and the utilized solvent is a pharmaceutic adjuvant, thus the safety of the products is ensured. The purification process is a molecular distillation technique, thus the conjugated linoleic acid products with higher purification can be obtained. The invention has the advantages of high yield of the reaction, simple process flow and good product quality.

A method comprising providing a fatty acyl mixture comprising: (i) a C10-C16 acyl carbon atom chain content of at least 30 wt. % wherein at least 80% of the C10-C16 acyl carbon atom chains are saturated; and (ii) a C18-C22 acyl carbon atom chain content of at least 20 wt. % wherein at least 50% of the acyl C18-C22 carbon atom chains contain at least one double bond; hydrolyzing the mixture to yield a quantity of C10-C16 saturated fatty acids and C18-C22 unsaturated fatty acids; separating the C10-C16 saturated fatty acids from the C18-C22 unsaturated fatty acids; hydrotreating the C10-C16 saturated fatty acids to yield a quantity of diesel fuel blendstock; oligomerizing at least some of the C18-C22 unsaturated fatty acids to yield a quantity of C36+ fatty acid oligomers; and hydrotreating the C36+ fatty acid oligomers to yield a quantity of C36+ alkanes.

Methods for preparation of a unique superbase catalyst consisting of mixture of polyether alcohol and base in which a polyether alcohol superbase is produced by the removal of water or alcohol at elevated temperatures to form a polyether alcohol alkoxide. The superbase catalyst is useful in, but not limited to, quantitative isomerization of alkyl esters of vegetable oils containing interrupted double bond systems to yield esters with conjugated double bond systems.

The invention aims at solving the defects of long reaction time and high reaction temperature of a heterogeneous etherification ring-opening reaction of epoxy biodiesel of prior arts, and provides a method for preparing biological lubricating oil base oil by using epoxy biodiesel. The method comprises the steps that: (1) under a condition of ultrasonic-assisted heat and mass transfer, the heterogeneous etherification ring-opening reaction is carried out, wherein long-chain fatty alcohol and a metal-ion-load-type cation exchange resin solid catalyst are mixed and heated to a reaction temperature; epoxy biodiesel is added for carrying out the ring-opening reaction; when an epoxy value is smaller than 0.1, the reaction is stopped; the reaction mixture is cooled to room temperature, and is washed by using distilled water; a lower-layer aqueous phase and the solid catalyst are separated, and the solid catalyst is recovered; an upper-layer organic phase is washed to neutral; and vacuum dehydration and light component removing are carried out, such that isomerized fatty alcohol ether is obtained; and (2) the product obtained in the step (1) is subjected to clay discoloration, such that clear and transparent biological lubricating oil base oil is obtained. According to the adopted catalyst, the catalytic active agent has high selectivity.

The invention discloses preparation and application of polyunsaturated fatty acid containing rich conjugated linoleic acid and belongs to the technical field of polyunsaturated fatty acid extraction and steady-state treatment of grease. A preparation method comprises the following steps: (1) preparing mixed fatty acid by utilizing an enzymolysis method; (2) enriching the polyunsaturated fatty acid by utilizing a urea-inclusion method; (3) enriching the conjugated linoleic acid by combining a super-critical CO2 extraction method and an alkali isomerization method to finally obtain the polyunsaturated fatty acid containing the rich conjugated linoleic acid, wherein the content of the conjugated linoleic acid reaches 90 percent or more and a product contains other polyunsaturated fatty acid at the same time so that the structure of the product is more reasonable. By adopting a method for preparing microcapsules or emulsion, the polyunsaturated fatty acid containing the rich conjugated linoleic acid is subjected to stabilization treatment, so that the storage stability of the product is improved and the storage period can reach 24 months; meanwhile, the bioavailability of the polyunsaturated fatty acid is improved and the polyunsaturated fatty acid is more easily digested and absorbed by human bodies.

This invention relates to a new conjugated linoleic acids, a process for preparation thereof and method of use. Thus this invention is concerned with the preparation and purification of conjugated linoleic acids from materials rich in alpha or gamma linoleic acids. The reaction produces a mixture containing a 1:1 ratio of 9Z, 11E, 15Z-octadecatrienoic acid and 9Z, 13E, 15Z-octadecatrieonic acid. The mixture can be purified up to 90% by liquid chromatography, crystallization or urea crystallization. The mixture of 1:1 9Z, 11E, 15Z-octadecatrienoic acid and 9Z, 13E, 15E, 15Z-octadecatrienoic acid have anticancerous activities.

A method for producing liquid fuel components from renewable oil. A fresh feedstock including saturated fatty acids is subjected to dilution by an organic lipophilic solvent. The solvent has a low phosphorus and metal impurity content, less than 5 ppm and less than 10 ppm, respectively. Dilution is performed before and / or during purification by at least one pretreatment process for removal of phosphorus and metal impurities. Subsequently, the resulting purified feedstock is fed into at least one post-treatment process suitable for producing liquid fuel components.

The present invention is generally directed to the synthesis and / or manufacture of ester-based lubricant compositions. The present invention is also directed to methods of making these and other similar lubricant compositions, and to systems for implementing such methods (processes). In some embodiments, the methods for making such ester-based lubricants utilize a biomass precursor (e.g., triglyceride-bearing vegetable oils) such that the lubricant compositions generated by the methods and systems of the present invention can be properly deemed biolubricants. In these or other embodiments, lubricant precursor species can also be sourced or derived from Fischer-Tropsch (FT) and / or long-chain paraffin pyrolysis reaction products. The ester component of the lubricant compositions, produced in accordance with the methods and systems of the present invention, comprises largely diester species.

The invention belongs to the technical field of preparation of aviation kerosene, and particularly relates to a preparation method of a hydrodeoxidation isocatalyst, a hydrodeoxidation isocatalyst and application thereof. Carbon nanotubes are modified by nickel phthalocyanine so as to introduce Ni and N elements into the carbon nanotubes, iron phthalocyanine is added to cooperate with the nickel phthalocyanine, and the modified carbon nanotubes are added into a SAPO-11 synthetic gel in the form of a gel component, so that the synthesized SAPO-11 has more abundant pores and higher acid strength; and by introducing the Ni, Fe and N, the synthesized molecular sieve has the hydrodeoxidation activity, so that the synthesized NiFeCNTSAPO-11 can be directly used as a biological aviation kerosene catalyst for hydrogenating vegetable oil, thereby omitting the step of impregnating active components into the support and simplifying the preparation procedure. Besides, the hydrodeoxidation isocatalyst has high catalytic efficiency and high biological aviation kerosene yield (up to 78-85%).

The present invention generally relates to a process for the arylation of unsaturated linear fatty acids and / or alkyl esters thereof to their aryl branched counterparts. Said arylation process comprises contacting said unsaturated linear fatty acids and / or alkyl esters thereof and one or more aromatic compounds with at least one metal ion exchanged solid material catalyst. The invention also relates to various derivatives prepared from the aryl branched fatty acids and / or alkyl esters prepared in accordance with the present invention.

The present application is directed to a process for the production of trans-10, cis-12 conjugated linoleic acid in a transgenic microorganism comprising the steps of: (a) introducing into said microorganism at least one nucleic acid molecule encoding a trans-10, cis-12 conjugated linoleic acid isomerase, (b) culturing the transgenic microorganism obtained under (a), (c) inducing the production of trans-10, cis-12 conjugated linoleic acid by adding linoleic acid to the culture, (d) incubating the induced culture for at least 12 hours, and (e) isolating the conjugated linoleic acid from the culture media and / or transgenic microorganism.

Methods for sequential saponification and quantitative isomerization of glyceride oils containing interrupted double bond systems, with alkali in a polyether alcohol solvent to yield soaps with conjugated double bond systems are disclosed. The novel properties f the polyether alcohols allow the removal of water added with the alkali by boiling. The preferred embodiment uses a vegetable oil rich in linoleic acid such as sunflower or safflower oil, potassium hydroxide, phosph ric acid to neutralize the soaps. The reaction forms equal quantities of 9Z,11E-octadecadienoic acid and 10E,12Z-octadecadienoic acids.

The present invention generally relates to a process for the skeletal isomerization of unsaturated linear fatty acids and / or alkyl esters thereof to their branched counterparts. Said skeletal isomerization process comprises contacting said unsaturated linear fatty acids and / or alkyl esters thereof with at least one metal ion exchanged solid material catalyst. The present invention also relates to a process for the preparation of branched fatty acids and / or alkyl esters thereof from their straight chain counterparts. Finally, the invention also relates to various derivatives prepared from the branched fatty acids and / or alkyl esters prepared in accordance with the present invention.