178 results about "Unsaturated fatty acid ester" patented technology

Integrated processes of preparing industrial chemicals starting from seed oil feedstock compositions containing one or more unsaturated fatty acids or unsaturated fatty acid esters, which are essentially free of metathesis catalyst poisons, particularly hydroperoxides; metathesis of the feedstock composition with a lower olefin, such as ethylene, to form a reduced chain olefin, preferably, a reduced chain α-olefin, and a reduced chain unsaturated acid or ester, preferably, a reduced chain α,Ω-unsaturated acid or ester. The reduced chain unsaturated acid or ester may be (trans)esterified to form a polyester polyolefin, which may be epoxidized to form a polyester polyepoxide. The reduced chain unsaturated acid or ester may be hydroformylated with reduction to produce an α,Ω-hydroxy acid or α,Ω-hydroxy ester, which may be (trans)esterified with a polyol to form an α,Ωpolyester polyol. Alternatively, the reduced chain unsaturated acid or ester may be hydroformylated with reductive amination to produce an α,Ω-amino acid or α,Ω-amino ester, which may be (trans)esterified to form an α,Ωpolyester polyamine.

The invention provides PVDC copolymer emulsion. The copolymer emulsion is formed by mixture monomers and accessory ingredients through copolymerizing. The mixture monomer contains 65 percent to 82 percent of vinylidene chloride, 15 percent to 35 percent of unsaturated fatty acid ester monomer, 3 percent to 8 percent of unsaturated fatty acid and 0.001 percent to 2 percent of perfluoro-unsaturated fatty acid C3 to C6 ester monomer. The copolymer emulsion also contains the three-layer structural particles, the core-shell particles of which are all VDC/MMA/BA: the core layer is 20 percent to 84 percent of VDC and 16 percent and 80 percent of comonomer; the middle layer is 80 percent of VDC and 18 percent and 20 percent of comonomer; the outmost layer is 30 percent to 80 percent of VDC, 20 percent and 60 percent of comonomer and trace amount of C3 to C6 perfluoroester. The ratio of each layer is 5 to 30:25 to 70:15 to 30. The invention also provides a preparation method of the copolymer emulsion and an application of the copolymer emulsion in fields of fiberglass mesh fabrics, sponges, paper packaging materials, textiles and the like which use impregnating technical coating.

The invention relates to a method for preparing phosphatidylserine abundant in polyunsaturated fatty acid and belongs to the technical field of bioengineering. The method is characterized by comprising the following steps of: firstly, catalyzing ester exchange reaction between phosphatide and polyunsaturated fatty acid ester by utilizing one or a mixture of phosphatidase A and lipase to generate phosphatide abundant in polyunsaturated fatty acid; and then catalyzing phosphor-transfer esterification reaction between the phosphatide abundant in the polyunsaturated fatty acid and L-serine by utilizing phosphatidase D to generate the phosphatidylserine abundant in the polyunsaturated fatty acid. The method has the advantages of no discharge of waste water, good product quality, no solvent residue, safe process operation, few reaction byproducts, no waste generation, cost reduction, simple production process and easy realization of scale production because of utilizing two enzymes to perform sub-step catalysis and perform reaction in the same reactor, and completing the reaction process in a non-solvent system. Therefore, the invention provides a good and feasible method for preparing the phosphatidylserine abundant in the polyunsaturated fatty acid.

A moisture curable composition capable of cure to an elastomeric body, the composition comprising (a) an organopolysiloxane having not less than two silicon-bonded hydroxyl or hydrolysable groups; (b) a silane of the general formula G₂-Si—R¹₂, wherein each group is reactable with the hydroxyl or hydrolysable groups in (a), and each R¹ group is an alkyl group having from 1 to 10 carbon atoms, an alkenyl group, an alkynyl group an aryl group or a fluorinated alkyl group; (c) one or more fillers and (d) a photocatalyst. Preferably at least one R¹ group is unsaturated, but in the absence of this there is provided an additional component in the form of (e) an unsaturated compound selected from the group of an unsaturated short chain siloxane, an unsaturated cyclic siloxane, an unsaturated fatty acid an unsaturated fatty alcohol or an unsaturated fatty acid ester. The cured product is generally used as a sealant, which avoids dirt pick-up after cure and has a protective layer on the sealant interface with air.

Disclosed is a process for the manufacture of saturated fatty acid esters by subjecting unsaturated fatty acid esters to hydrogenation in the presence of a catalyst suitable for catalysing the saturation of double bonds in the esters, which is characterised in that said catalyst represents a homogenous complex of a Group VIII metal and a sulfonated phosphite as the polar ionic ligand.

The invention relates to a lubricity additive of low-sulfur diesel oil and a preparation method thereof, the invention is characterized in that the addictive is unsaturated fatty acid glyceride, wherein the unsaturated fatty acid glyceride is a mixture of monoglyceride, diglycerideoleic and triglyceride of oleic acid or linoleic acid. the method comprises the following steps: taking plant oil as a raw material, preparing fatty acid ester by using plant oil and alcohol under the condition of base catalysis, performing the processes of vacuum rectification and urea adduction fractionation to fatty acid ester, acquiring nonsaturated fatty acid ester and etherifying nonsaturated the fatty acid ester and glycerin under the base-catalyzed condition to obtain the product. The invention provides a novel production process of monoglyceride, diglycerideoleic and triglyceride of unsaturated fatty acid. The process takes plant oil (especially non-edible plant oil) as the raw material, no harmful substance is discharged in the process of production, so that the method has the advantages of easy raw material acquisition and no pollution. The product can be taken as a lubricity additive of low-sulfur diesel oil, the lubrication performance and physical properties is equal or better than that of a foreign same kind product.

A catalyst for the polymerizing and copolymerizing of ethene and its preparing process are disclosed. Its active component is composed of Mg compound, the emtrol with 1-12 carbon atoms, at least one unsaturated ester of fatty acid containing one or more hydroxy radicals and/or at least one water-in-oil non-ionic surfactant, organo aluminium compound, or Ti compound, and at one hydrogenating improver. Its advantages are high activity and good granular form.

The invention discloses a method for separating an eicosapentaenoic acid ester (EPA) ester from a docosahexaenoic acid (DHA) ester by virtue of simulated moving bed chromatography. According to the method, a polystyrene/divinylbenzene type reverse-phase resin is taken as a stationary phase and pure ethanol is taken as an eluent; mixed poly-unsaturated fatty acid esters are continuously separated by virtue of 4-area simulated moving bed chromatography; the ethanol solution of the DHA ester is continuously collected from an extract outlet, while the ethanol solution of the EPA ester is continuously collected from a raffinate outlet; finally, the monomers of the EPA ester and the DHA ester are obtained by virtue of vacuum concentration. The method has the characteristics of high yield, low solvent consumption and no toxic solvent.

The invention relates to a method for preparing a light olefin by adopting biolipid. The method comprises: (1) under a hydrogenation reaction condition, carrying out a reaction of a mixed material comprising biolipid and hydrogen in the presence of a hydrogenation catalyst in a hydrogenation reactor, and separating the oil phase from the reaction products; (2) under a catalytic cracking condition, carrying out a reaction of the resulting oil phase from the step (1) in the presence of a catalytic cracking catalyst in a catalytic cracking reactor, and separating the resulting reaction mixture to obtain the light olefin, light oil and heavy oil, wherein the resulting oil phase from the step (1) is adopted as the catalytic cracking raw material. The used biolipid contains an unsaturated fatty acid ester and/or an unsaturated fatty acid. With the method of the present invention, the yield of the light olefin can be significantly improved.

The invention relates to a potting material, in particular to condensed type organic silicon potting material composition with a matte surface, which is suitable for potting a light emitting diode (LED) display screen module. The composition comprises liquid silicon rubber, a cross-linking agent, a catalyst, a filling material, a drier and a matte agent, wherein the matte agent containing high-grade unsaturated fatty acid esters with a plurality of unsaturated bonds can be hydrolyzed under the action of moisture in the air so as to generate high-grade unsaturated fatty acid; and then the unsaturated fatty acid is quickly oxidized to have a cross-linking reaction so as to form a matte film on the surface of an adhesive layer. The existence of reflection is essentially avoided so as to realize the effects of omitting a mask and saving the cost.

Various non-limiting embodiments disclosed herein relate generally to aqueous-coating compositions and thickening systems that can be used in aqueous coating-compositions. More particularly, certain non-limiting embodiments disclosed herein relate to aqueous-coating compositions, such as latex paints, comprising xanthan gum and at least one ester of an unsaturated fatty acid that is essentially free of volatile organic compounds as determined by EPA Reference Method 24. Other non-limiting embodiments relate to thickening systems comprising a mixture of a xanthan gum and at least one ester of an unsaturated fatty acid, wherein the thickening system is essentially free of volatile organic compounds as determined by EPA Reference Method 24. Still other non-limiting embodiments relate to methods of making and using the aqueous coating-compositions and thickening systems disclosed herein.

The invention belongs to the technical field of food and chemical industry and particularly relates to a water-soluble phytosterol unsaturated fatty acid microcapsule and preparation method of water-soluble phytosterol unsaturated fatty acid microcapsule. The microcapsule comprises 25 to 40 percent of phytosterol unsaturated fatty acid ester, 5 percent of emulsifying agents, 6.25 to 18.75 percent of sucrose and the balance wall materials, wherein the total quantity is 100 percent, the emulsifying agents are glycerin monostearate and sucrose ester, the mass ration of the glycerin monostearate to the sucrose ester is 1:(0.33-3), the ratio of the sucrose ester to the sucrose is 1:5, and the wall materials are dextrin and soy isolate protein. The water solubility of the phytosterol unsaturated fatty acid microcapsule is good, the phytosterol unsaturated fatty acid microcapsule can be mixed and dissolved with water-soluble matters, the application of the phytosterol ester to functional food, dairy products and beverages is widened, in addition, the preparation method disclosed by the invention is simple, the equipment requirement is low, and the preparation method is suitable for large-scale industrial production.

Compositions containing unsaturated fatty esters may be stabilized against atmospheric oxidation by the addition of an antioxidant package containing a phenolic oxidant and a nonphenolic oxygen scavenger, which may be a hydroxylamine, an amine N-oxide, an oxime, or a nitrone. If an amine N-oxide is used, it may be used with or without a phenolic antioxidant. Compositions treated in this manner show good resistance to atmospheric oxidation and resultant viscosity increase.

The invention provides a preparation method of polymer fatliquoring agent, comprising the following steps: (1) component A and component B are mixed, the component A is at least one of natural oil containing unsaturated fatty acid and long carbon chain unsaturated fatty acid ester, the component B at least comprises monoene which belongs to an unsaturated monomer, peracid is used as catalyst, so as to carry out copolymerization; (2) alkali is added in a polymer which carries out copolymerization, and the alkali and the polymer carry out neutralization reaction, the polymer is neutralized to have pH value from 6.0 to 8.5. In the invention, the peracid is used as the catalyst, the reaction condition is mild, no waste is discharged in the reaction process, and the product can be biologically degraded.

The invention provides a method for compounding epoxy fatty acid ester with unsaturated fatty acid ester. The method is characterized in that heteropoly acid metal compounds are used as catalyst, and hydrogen oxide aqueous solution is used as an oxygen source. When no other organic solvent or organic peroxide acid exists, the unsaturated fatty acid ester is oxidized selectively to compound epoxy fatty acid ester, wherein the unsaturated fatty acid ester is unsaturated fatty acid methyl ester, unsaturated fatty acid ethyl ester, unsaturated fatty acid acrylic ester or unsaturated fatty acid butyl ester; and the structural formula of the catalyst is as follows: QmHnPM(I)xM(II)yO4+3(X+Y). According to the invention, the epoxy fatty acid ester can be obtained with low cost, high productivity and high selectivity; all the epoxide number, the iodine number and the acid number meet the requirement; the stability of the product is high; and the catalyst can be recycled.

Disclosed is a pharmaceutical composition, comprising: a) at least one sorbitan unsaturated fatty acid ester having a polar head with at least two or more —OH (hydroxyl) groups; b) at least one phospholipid; c) at least one liquid crystal hardener which is free of an ionizable group and has a triacyl group with 15 to 40 carbon atoms or a carbon ring structure in a hydrophobic moiety; and d) at least one GnRH (gonadotropin-releasing hormone) analogue as a pharmacologically active substance, wherein said lipid pre-concentrate exists as a liquid phase in absence of aqueous fluid and forms into a liquid crystal in presence of aqueous fluid. The pharmaceutical composition is configured to enhance the sustained release of the pharmacologically active substance GnRH analogue.