18 results about "Unsaturated fatty acid ester" patented technology

The invention relates to the technical field of catalysts, and particularly discloses a Ni-Cu-CeO2 / ZrO catalyst for improving oxidation stability of biodiesel and a preparation method of the Ni-Cu-CeO2 / ZrO catalyst. The invention discloses a Ni-Cu-CeO2 / ZrO catalyst for improving oxidation stability of biodiesel. The Ni-Cu-CeO2 / ZrO catalyst comprises a carrier, an active component and an auxiliary agent, the carrier is a CeO2-ZrO2 composite oxide; the active components are Ni and Cu; ni accounts for 3-5 wt% of the mass of the catalyst, and Cu accounts for 1-3 wt% of the mass of the catalyst; the auxiliary agent is La2O3; the preparation method comprises the following steps: firstly preparing the CeO2-ZrO2 carrier by adopting a coprecipitation method, then impregnating nickel nitrate, copper nitrate and lanthanum nitrate in an isopyknic manner, and then carrying out stepped roasting to obtain the catalyst. The catalyst has high catalytic activity and stability, unsaturated fatty acid ester in biodiesel can be removed, the oxidation stability of the biodiesel is improved, and the cost of the catalyst is lower than that of a noble metal catalyst.

Provided is a novel resin composition containing poly(3-hydroxybutyrate) (also referred to as "PHB") and being capable of preventing adhesion to a metal part during fiberization.　The resin composition contains poly(3-hydroxybutyrate) and a polyglycerol unsaturated fatty acid ester.

This application relates to the field of rubber sealing materials technology, and discloses a low-temperature resistant and high-resilience EPDM seal, its preparation method, and its application. The low-temperature resistant and high-resilience EPDM seal of this application uses a rubber matrix, carbon black, plasticizer, peroxide vulcanizing agent, vulcanization activator, crosslinking agent, and antioxidant as raw materials. The rubber matrix includes EPDM and modified EPDM, with modified EPDM accounting for 8-35% of the total mass of the rubber matrix. The plasticizer is selected from at least one of epoxidized fatty acid esters, epoxidized vegetable oils, and unsaturated fatty acid esters. Furthermore, the composition and proportion of each raw material are specified. The preparation method involves mixing, vulcanization, primary vulcanization, and secondary vulcanization steps, enabling the low-temperature resistant and high-resilience EPDM seal of this application to possess both excellent low-temperature resistance and high resilience, and high-temperature resistance to compression deformation, thus meeting the long-term sealing requirements of new energy vehicle engine cooling systems under different regions and operating conditions.

In frozen foods that use emulsified sauces, ice crystals form during freezing storage, and starch retrogradation occurs due to freezing, which destroys the emulsion in the sauce, causing water and oil separation and a loss of flavor when thawed. [Solution] An emulsified sauce is prepared using an oil and fat composition for emulsified sauce, which is characterized in that the edible oil and fat contains a polyhydric alcohol unsaturated fatty acid ester having an HLB of less than 12 and an average esterification rate of 10% or more.

Problem: To provide a method for forming a multilayer coating film having excellent coating film performance even when cured at low temperature, and a clear coating composition used in the method. Means for solving the problem: a method for forming a multi-layer coating film comprising a step (1) of applying an aqueous first colored coating composition (BC1) to an object to be coated, a step (2) of applying an aqueous one-part second colored coating composition (BC2) to the coating film, and further, a step (3) of forming a multi-layer coating film on the object to be coated, a step (3) of applying a clear coating composition (CC) onto the coating film, in which the clear coating composition (CC) contains a hydroxyl group-containing acrylic resin (A1), an isocyanate curing agent (A2), and an unsaturated fatty acid ester polyol (D) having at least two hydroxyl groups in one molecule; and the distance Ra between the solubility parameter of the hydroxyl group-containing acrylic resin (A1) in the Hansen space and the solubility parameter of the unsaturated fatty acid ester polyol (D) in the Hansen space is 4.0 or less; and a step (4) of simultaneously curing the uncured first colored coating film, the uncured second colored coating film, and the uncured clear coating film formed in steps (1) to (3) by heating at 70 DEG C to 100 DEG C; and the clear coating composition (CC).

The invention relates to the technical field of solar cells, and provides a perovskite solar cell, a preparation method thereof and a photovoltaic module. The perovskite solar cell comprises a substrate, a hole transport layer, a perovskite light absorption layer, an interface passivation layer, an electron transport layer and an electrode layer which are stacked in sequence, wherein the hole transport layer comprises a hole transport material and a first polymer, and the raw material of the first polymer comprises first unsaturated fatty acid ester; the interface passivation layer comprises an interface passivation material and a second polymer, and the raw material of the second polymer comprises second unsaturated fatty acid ester. According to the perovskite solar cell in the technical scheme, the crystallinity, the stability and the photoelectric conversion efficiency of the perovskite light absorption layer can be improved.

The present invention belongs to the field of coenzyme Q10 technology and relates to a coenzyme Q10 oil, a preparation method thereof, and an application thereof. The coenzyme Q10 oil contains the following components in percentage by mass: 20-40% coenzyme Q10, 45-65% mixed oil, 10-15% biphasic emulsifier, and 0-3% optional antioxidant; the coenzyme Q10 in the coenzyme Q10 oil exists in a molecular form above 0°C; the mixed oil contains both saturated fatty acids (esters) and unsaturated fatty acids (esters); the biphasic emulsifier contains both a hydrophilic emulsifier and a lipophilic emulsifier. The coenzyme Q10 in the coenzyme Q10 oil provided by the present invention can still stably exist in a molecular form at high content, and has high bioavailability.

Provided is a method for efficiently producing a target highly unsaturated fatty acid ester composition with high purity. Provided is a method for producing a highly unsaturated fatty acid ester composition from a fat and oil composition, the method comprising: supplying the fat and oil composition to a first column chromatography, and removing all or part of at least one component in which the relative value of the retention time of the peak top of a target object in the first column chromatography is 1.8-3.5 when the retention time of the peak top is 1.0; and supplying an eluate containing the target obtained in the first column chromatography to a second column chromatography, and removing all or part of at least one component in which the relative value of the retention time of the peak top of the target in the second column chromatography is 0.90-1.1 when the retention time of the peak top is 1.0.

The invention relates to the technical field of cosmetics, in particular to a unilateral microemulsion enrichment type freeze-drying mask composition and a preparation method and application thereof.The unilateral microemulsion enrichment type freeze-drying mask composition is prepared from, by mass, 0.3%-7.5% of an emulsifier, 0.11%-8.1% of a water-phase active matter, 1%-74% of an oil-phase active matter and the balance deionized water; the emulsifier comprises an acrylate polymer and a polyglycerol ester emulsifier; the water-phase active matter comprises polypeptide and a humectant; the polypeptide comprises carnosine, acetyl hexapeptide-8, arginine / lysine polypeptide and palmitoyl pentapeptide-4; the oil phase active matter comprises unsaturated fatty acid ester and wax ester. According to the invention, through mixing of three emulsifiers and structural complementation of unsaturated fatty acid ester meadowfoam seed oil and wax ester jojoba oil, the problems of micro-emulsion instability and low permeation efficiency of a traditional freeze-drying mask are solved, directional conveying of water-phase quick release and oil-phase slow release is realized, and the stability of a micro-emulsion system is ensured.

The present invention relates to a novel resin composition containing poly(3-hydroxybutyrate) (also referred to as "PHB") and a crystallization nucleating agent, the resin composition being capable of suppressing the occurrence of burrs and warpage during injection molding. The resin composition contains PHB, a polyglycerol unsaturated fatty acid ester, and a crystallization nucleating agent.

The present disclosure describes aqueous adhesives containing, in particular, a binder and a sugar fatty acid ester, in particular, an unsaturated fatty acid ester (uSFAE), including aqueous adhesive compositions containing such a combination wherein such aqueous adhesive compositions exhibit improved water resistance compared to adhesives that do not contain the uSFAE. Articles comprising the aqueous adhesive compositions are also described.

The invention relates to the technical field of rhenium-based catalysts, in particular to a rhenium-based catalyst and a preparation method and application thereof.The catalyst comprises an active component and an auxiliary component which are loaded on a carrier; the active component comprises a rhenium-containing compound, and the auxiliary component comprises a zirconium-containing compound and / or a boron-containing compound; the carrier is aluminum oxide, and the auxiliary agent component is combined with an alkaline hydroxyl group on the surface of the carrier to reduce the content of the alkaline hydroxyl group, so that the active component is accurately loaded on an acidic hydroxyl group on the surface of the carrier to form an active site; lewis acid sites are additionally introduced into the auxiliary component, and the auxiliary component is also used for loading the active component and increasing the active sites; the additive component and the active component have a synergistic effect and are used for catalyzing a double decomposition reaction of unsaturated fatty acid ester and olefin, so that the technical effects that the conversion rate of the unsaturated fatty acid ester is 43-65%, and the selectivity of the product is 56-68% are achieved.

The utility model belongs to the technical field of diesel oil anti-wear agent production, and particularly relates to an anti-blocking system for a diesel oil anti-wear agent production process, which comprises a first stirring kettle, a centrifugal machine, a second stirring kettle, a first centrifugal pump and a third stirring kettle which are connected in sequence, an outlet of the third stirring kettle is respectively connected with a second centrifugal pump and a third centrifugal pump through pipelines, and the second centrifugal pump and the third centrifugal pump are connected in parallel; a water outlet is formed in the top of the centrifugal pump, and the water outlet is conveyed to the first conveying pipe with the jacket heat tracing function, the second conveying pipe with the jacket heat tracing function and the third conveying pipe with the jacket heat tracing function through pipelines. A hot water phase (80-90 DEG C) generated after washing of the coarse anti-wear agent in the stirring kettle is used for heat tracing of a discharge pipeline of palmitic acid and sewage containing the palmitic acid, the pipeline is prevented from being blocked by solidification and precipitation of the palmitic acid, and the method can be suitable for continuous production of unsaturated fatty acid and unsaturated fatty acid ester type anti-wear agents.

The invention belongs to the technical field of bio-based surfactants, and relates to a polyunsaturated fatty acid ester and monounsaturated fatty acid ester composite surfactant and a preparation method and application thereof. The preparation method comprises the following steps: mixing polyunsaturated fatty acid ester with monounsaturated fatty acid ester, saturated fatty acid ester and aromatic compounds; carrying out an alkylation reaction under the catalytic action of FeCl3 or methanesulfonic acid, and then sequentially carrying out an amidation reaction and a quaternization reaction to obtain the product, the molar ratio of the polyunsaturated fatty acid ester to the monounsaturated fatty acid ester is (0.1-2.6): 1. Compared with the prior art, unsaturated double bonds and hydrophilic head groups on fat long chains are subjected to alkyl modification, then the ampholytic surfactant is prepared through amidation reaction and quaternization reaction in sequence, and the interfacial tension between the ampholytic surfactant and Daqing crude oil reaches the ultralow interfacial tension level; the application of the grease with high polyunsaturated fatty acid content in the high-interfacial-activity surfactant is realized.

Provided is a method for producing a concentrated liquid of a minute useful substance.　The method for producing a concentrated liquid containing a minute useful substance involves: adding an oxyethylene adduct of a sorbitan unsaturated fatty acid ester to a primary liquid raw material containing a minute useful substance to obtain a secondary liquid raw material; and applying the secondary liquid raw material to a hollow fiber membrane to concentrate the secondary liquid raw material.

Provided is a method for producing a desired highly unsaturated fatty acid ester composition efficiently and in high purity. Provided is a method for producing a highly unsaturated fatty acid ester composition, the method comprising purifying a crude composition containing a highly unsaturated fatty acid ester by column chromatography using an ODS silica gel filler, wherein the ODS silica gel filler has an average pore size of 8.5 to 11.9 nm and an average particle size of 15 to 229 μm.

The invention discloses a pharmaceutical composition and application thereof. The composition comprises a basic component and a synergistic component, wherein the basic component comprises 0.1-9.4 wt.% of 1, 4-polyisoprene; the synergistic component comprises a first synergistic component and a second synergistic component, and the content of the first synergistic component and the second synergistic component is 90.0-99.9 wt.%. The first synergistic component comprises fatty acid and / or non-sterol fatty acid ester, and the second synergistic component comprises sterol and / or sterol ester. On the basis of the total mass of the synergistic components, the first synergistic component is prepared from 64.0 to 99.9 weight percent of unsaturated fatty acid and / or non-sterol unsaturated fatty acid ester and 0 to 24.0 weight percent of saturated fatty acid and / or non-sterol saturated fatty acid ester; and the second synergistic component comprises 0.1 to 2.0 weight percent of sterol and / or sterol ester. According to the composition disclosed by the invention, the pharmaceutical activity of the 1, 4-polyisoprene is improved, and a better drug effect can be obtained under the condition of the same dosage.

The application discloses a reactive organic polysiloxane, a preparation method thereof, modified powder and base makeup containing the modified powder. The reactive organic polysiloxane has a structure shown in formula I. The preparation method of the reactive organic polysiloxane comprises the following steps: mixing unsaturated silane, unsaturated fatty acid ester, optionally monovinyl polysiloxane and hydrogenated polydialkylsiloxane, and performing reaction in the presence of a catalyst to obtain the reactive organic polysiloxane. The modified powder comprises powder and a treating agent attached to the powder, wherein the treating agent comprises the above-mentioned reactive organic polysiloxane and / or a partial (hydrolysis) condensate thereof. The base makeup comprises the above-mentioned modified powder and a water-in-silicon oil emulsion. The reactive organic polysiloxane provided by the application can be used as a powder treating agent. The modified powder provided by the application has excellent dispersibility, lipophilicity and silicon oil affinity. The base makeup containing the modified powder has good color uniformity and small color difference before and after being applied.