Product
Feature
Quick Research
Generate reliable direction feasibility study reports for your R&D in just a few steps.
Technical Q&A
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
Find Solutions
As an expert in R&D theories, this can generate solutions to your technical problems instantly.
Evaluate Feasibility
Analyze your overall solution with one click, know your potential R&D risks in advance.
Monitor Landscape
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
49results about How to "Reduce isomerization" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Drospirenone for hormone replacement therapy
InactiveUS20020132801A1Dissolve fastImprove bioavailabilityOrganic active ingredientsBiocideDrospirenoneBULK ACTIVE INGREDIENT
Drospirenone for Hormone Replacement Therapy A pharmaceutical composition comprising as a first active ingredient an estrogen, such as estradiol or estradiol valerate, in sufficient amounts to treat disorders and symptoms associated with deficient endogenous levels of estrogen in women, and as a second active ingredient 6beta,7beta; 15beta; 16beta-dimethylene-3-oxo-17alpha-preg-4-ene-21,17-carbolactone (drospirenone, DRSP) in sufficient amounts to protect the endometrium from the adverse effects of estrogen is useful for, amongst others, treating peri-menopausal, menopausal and post-menopausal women. This composition may be used for hormone replacement therapy and may be administered as a multi-phased pharmaceutical preparation. This combination therapy may comprise continuous, sequential or interrupted administration, or combinations thereof, of DRSP and estrogen, each optionally in micronized form.
Owner:BAYER INTELLECTUAL PROPERTY GMBH
Phosoxophite ligands and use thereof in carbonylation processes
ActiveUS7196230B2High activityHigh selectivitySilicon organic compoundsRhodium organic compoundsCarbonylationProtein carbonyl
A novel organophosphorus composition and synthesis thereof, the composition being characterized by one phosphite moiety, one phosoxophite moiety, and a plurality of sterically bulky substituents. The novel composition finds utility as a ligand in Group VIII transition metal phosoxophite complex catalysts and complex catalyst precursors that are used in carbonylation processes, preferably, hydroformylation processes. Additionally, there is disclosed a novel method of preparing a phosphoromonochloridite composition that finds utility as a precursor to the novel phosoxophite composition.
Owner:DOW TECH INVESTMENTS
Drospirenone for hormone replacement therapy
InactiveUS20030144258A1Dissolve fastImprove bioavailabilityBiocideOrganic active ingredientsDrospirenoneBULK ACTIVE INGREDIENT
A pharmaceutical composition comprising as a first active ingredient an estrogen, such as estradiol or estradiol valerate, in sufficient amounts to treat disorders and symptoms associated with deficient endogenous levels of estrogen in women, and as a second active ingredient 6beta,7beta; 15beta; 16beta-dimethylene-3-oxo-17alpha-preg-4-ene-21,17-carbolactone (drospirenone, DRSP) in sufficient amounts to protect the endometrium from the adverse effects of estrogen is useful for, amongst others, treating peri-menopausal, menopausal and post-menopausal women. This composition may be used for hormone replacement therapy and may be administered as a multi-phased pharmaceutical preparation. This combination therapy may comprise continuous, sequential or interrupted administration, or combinations thereof, of DRSP and estrogen, each optionally in micronized form.
Owner:SCHERING AG
Stabilization of a hydroformylation process
ActiveUS7446231B2Improve efficiencyProcess stabilityLiquid degasificationOrganic compound preparationReaction rateRate curve
An improved hydroformylation process involving reacting one or more reactants, such as an olefin, with carbon monoxide and hydrogen in the presence of a hydroformylation catalyst, to produce a reaction product fluid comprising one or more products, preferably aldehydes; wherein said process is conducted in a region of the hydroformylation rate curve that is negative or inverse order in carbon monoxide, which is sufficient to prevent and / or lessen deactivation of the hydroformylation catalyst; and wherein total pressure is controlled at a predetermined target value and / or vent flow rate is controlled at a predetermined target value, by adjusting a flow of a carbon-monoxide containing inlet gas, so as to prevent and / or lessen cycling of process parameters, e.g., reaction rate, total pressure, vent flow rate, and / or temperature.
Owner:DOW TECH INVESTMENTS
Reduced stiction and mechanical memory in MEMS devices
ActiveUS20100025832A1Reduces bonding vibrational constant for bondStatic frictionSemiconductor/solid-state device detailsSolid-state devicesHydrogenEngineering
Owner:TEXAS INSTR INC
Methods of preparing maleimide functionalized polymers
ActiveUS20050176922A1Reduce isomerizationPeptide preparation methodsDepsipeptidesDiels–Alder reactionCombinatorial chemistry
Methods for forming maleimide functionalized polymers are provided. In one such embodiment, a maleimide functionalized polymer is prepared in a method that includes a step of carrying out a reverse Diels-Alder reaction. Intermediates useful in the methods, as well as methods for preparing the intermediates, are also provided. Also provided are polymeric reagents, methods of using polymeric reagents, compounds and conjugates.
Owner:NEKTAR THERAPEUTICS INC
Catalyst for directly preparing olefin and aromatic hydrocarbon through synthetic gas and application thereof
ActiveCN109569704AFacilitated DiffusionImprove stabilityHydrocarbon from carbon oxidesMolecular sieve catalystsSyngasMolecular sieve
The invention discloses a catalyst for directly preparing olefin and aromatic hydrocarbon through synthetic gas and application thereof and belongs to the technical field of CO and CO2 catalytic conversion. The catalyst is composed of a Fischer-Tropsch synthetic active component, an auxiliary, an inert material and a sheet molecular sieve, a part of the auxiliary is loaded on the molecular sieve,the inert material coats the outer layer of the molecular sieve, and the Fischer-Tropsch synthetic active component and the other part of the auxiliary are loaded on the inert material. When CO2 or COor a mixture of the both on a catalyst system is in proper reaction conditions, olefin (C2-C5) content in a gaseous-phase hydrocarbon product can reach 70%, total content of aromatic hydrocarbon in liquid-stage hydrocarbon is up to higher than 95%, p-xylene content is up to 60%, and stability of the catalyst is improved substantially. The invention provides a new route capable of directly preparing olefin and aromatic hydrocarbon through CO2 and CO hydrogenation.
Owner:JIANGNAN UNIV
Novel phosoxophite legands and use thereof in carbonylation processes
ActiveUS20060100453A1High activityHigh selectivitySilicon organic compoundsOrganic compound preparationCarbonylationProtein carbonyl
A novel organophosphorus composition and synthesis thereof, the composition being characterized by one phosphite moiety, one phosoxophite moiety, and a plurality of sterically bulky substituents. The novel composition finds utility as a ligand in Group VIII transition metal phosoxophite complex catalysts and complex catalyst precursors that are used in carbonylation processes, preferably, hydroformylation processes. Additionally, there is disclosed a novel method of preparing a phosphoromonochloridite composition that finds utility as a precursor to the novel phosoxophite composition.
Owner:DOW TECH INVESTMENTS
Preparation method of polycarboxylate water reducer macromonomer methallyl alcohol polyoxyethylene ether
The invention relates to a polycarboxylate water reducer and specifically relates to a preparation method of polycarboxylate water reducer macromonomer methallyl alcohol polyoxyethylene ether. The method comprises the following steps: performing condensation reaction with ethylene oxide by taking lithium aluminum tetrahydride as a catalyst and taking an intermediate product obtained by reaction of methallyl alcohol and lithium aluminum tetrahydride and methallyl alcohol as raw materials to obtain a methallyl alcohol oligomer, further enabling the methallyl alcohol oligomer to perform condensation reaction with the added ethylene oxide under the action of an alkaline catalyst, terminating with propylene oxide, and adding glacial acetic acid to neutralize to obtain methallyl alcohol polyoxyethylene ether. The preparation method provided by the invention has the advantages of simple process, safety, low reaction temperature, short reaction time and low production cost; and obtained methallyl alcohol polyoxyethylene ether has narrow distribution of relative molecular weight and high retention rate of double bonds.
Owner:山东卓星化工有限公司
Low-viscosity white oil
ActiveCN104232160ANot easy to foamReduce isomerizationTreatment with hydrotreatment processesAlkaneMass content
The invention discloses a low-viscosity white oil which comprises the following alkanes components in percentage by weight: 5-15% of C13 and C16, 70-90% of C14 and 5-15% of C15. The mass content of normal paraffin hydrocarbons in the alkane components is greater than or equal to 80%. After the low-viscosity white oil is intensely oscillated and stopped, the foam can disappear within two seconds, and no carbon deposit is generated after the white oil is continuously combusted for 48 hours.
Owner:TIANJIN KAIWEI & YONGU UNITED CHEM +2
Bis-chelating ligand and use thereof in carbonylation processes
ActiveUS7294729B2High activityImprove stabilitySilicon organic compoundsRhodium organic compoundsHydrogenCarbonylation
A novel bis-chelating composition characterized by formula I: wherein M is a Group VB element; R1 and R2 are each independently selected from hydrogen and monovalent hydrocarbyl radicals; or R1 and R2 are bonded together to form a diradical; or one of R1 or R2 is hydrogen or a monovalent hydrocarbyl radical, while the other of R1 or R2 is a hydrocarbyl radical bonded to an atom in Ar; wherein Ar is selected from 1,2-arylenes; Q is selected from 1,2-arylenes, 2,2′-bisarylenes and alkyl diradicals; and W is selected from II, III, IV, or V: wherein M is as defined hereinbefore; each R is independently selected from hydrogen and monovalent hydrocarbyl radicals; X is selected from alkyl and aryl diradicals; Ar1 and Ar2 are each independently selected from 1,2-arylenes;Ar3 and Ar4 are each independently selected from monovalent aryl radicals; and n in formula IV is 0 or 1. The composition finds utility as a ligand in catalysts for carbonylation processes
Owner:DOW TECH INVESTMENTS
Preparation method of sulfur dioxide and epoxide copolymer
The invention discloses a preparation method of a sulfur dioxide and epoxide copolymer. According to the method, a novel polysulfone material is prepared through copolymerization of sulfur dioxide and epoxide under the catalytic action of SalenMX, epoxide and SalenMX are sequentially added to a high-pressure reaction kettle, sulfur dioxide is introduced and has a reaction at the temperature of 50-100 DEG C for 8-48 h, then, a product, namely, the sulfur dioxide and epoxide copolymer is obtained, the product is dissolved with chloroform, a hydrochloric acid and methanol mixed solution is used for precipitation, amber precipitates are filtered and repeatedly washed with methanol for 2-4 times, the washed product is transferred to a vacuum drying box and dried in vacuum at the room temperature for 8-24 h, and the sulfur dioxide and epoxide copolymer with higher stereoregularity can be obtained. The preparation method is simple, few catalysts are used, the reaction temperature is mild, the yield is high, the structure regularity of the product is good, the cost is low, and industrial production is easy to realize.
Owner:KUNMING UNIV OF SCI & TECH
Natural and stable solutions of alpha-acids and their use for the improvement of foam quality of beer
ActiveUS20110287152A1Detrimental to foam stabilityReduce shipping costsDough treatmentMilk preservationPhysical chemistryAlpha acid
This invention describes natural hop products that are stable solutions of alpha-acids, as well as their preparation and their use for post-fermentation addition to beer for the purpose of improving the foam quality, as measured by foam stability and foam cling. Improvements in the stability (both physical and chemical) of the alpha-acids are described by incorporation of iso-alpha-acids and tetrahydroiso-alpha-acids as well as various brewery-acceptable co-solvents. The alpha-acids also improve the physical stability of the reduced iso-alpha-acids, including tetrahydroiso-alpha-acids.
Owner:SS STEINER INC
Preparation method of sulfur dioxide, carbon dioxide and epoxide copolymer
The invention discloses a preparation method of a sulfur dioxide, carbon dioxide and epoxide copolymer. According to the method, epoxide, SalenCr<III>Cl and PPNCl are sequentially added to a high-pressure reaction kettle, sulfur dioxide and carbon dioxide are introduced and have a reaction at the temperature of 50-100 DEG C for 8-48 h, then, a product is dissolved with chloroform, a hydrochloric acid and methanol solution is used for precipitation, amber precipitates are filtered and repeatedly washed with methanol, the washed product is dried in vacuum at the room temperature, and the sulfur dioxide, carbon dioxide and epoxide terpolymer with higher stereoregularity can be obtained. The sulfur dioxide, carbon dioxide and epoxide terpolymer has structural characteristics of polycarbonate and polysulfone and has a wide application prospect in the fields of packaging, filtration and the like; the preparation method is simple, few catalysts are used, the reaction temperature is mild, the yield is high, the structure regularity of the product is good, the cost is low, and industrial production is easy to realize.
Owner:KUNMING UNIV OF SCI & TECH
Process for hydrogenation of sugar alcohol
InactiveCN1721424AReduce isomerizationReduce lossesOrganic compound preparationHydroxy compound preparationIsomerizationHydrogen pressure
The present invention belongs to the field of industrial industry technology, and discloses one kind of high pressure and low temperature alditol hydrogenating process. Alditol is hydrogenated in the conditions of hydrogen pressure 8.0-10.0 MPa and temperature 100-120 deg.c. Compared with traditional alditol hydrogenating process at relatively high temperature, the process of the present invention has greatly reduced isomerization and side reaction loss and raised product purity.
Owner:SHANGHAI RONGS HEALTH IND CO LTD
Solid-phase method of Abaloparatide
PendingCN111087462AShort synthesis timeHigh purityPeptide preparation methodsParathyroid hormonesBiochemical engineeringPeptide sequence
The invention provides a solid-phase method of Abaloparatide. The method comprises the steps: synthesizing one-fragment peptide resin and two fragments firstly and separately according to the fact that the peptide sequence of the main chain of Abaloparatide can be divided into one fragment of peptide resin and two fragments which are described in the specification, then coupling the one-fragment peptide resin with the two fragments, cutting the resin so as to obtain the crude product of the final product, finally performing purification, performing salt formation so as to obtain the target product finally, wherein the structures of the fragments and one-fragment resin are described in the specification. The method has simple operation, the purity of the obtained product is high, the process of the method is stable, the purity of the prepared Abaloparatide can reach 99.5% or above, the total yield is high, and the method has easy industrial production.
Owner:NANJING HUAWE MEDICINE TECH DEV
Preparation method for polyisobutylene with high reaction activity
The invention relates to a preparation method for polyisobutylene with high reaction activity, and the method is especially suitable for carbocation polymerization of isobutylene, an alkane mixture of isobutylene or a mixed light C4 fraction containing isobutylene to prepare polyisobutylene with high reaction activity. According to the method, in the presence of an organic compound of alcohol, phenol and / or ether, isobutylene cationic polymerization can be co-initiated by TiCl4 to prepare the polyisobutylene with high reaction activity, and by adjusting the proportion of alcohol, phenol or ether and the counter-ion steric hindrance, the polyisobutylene with high reaction activity can be obtained directly. The method can improve the conversion rate, increase the content of the polyisobutylene chain end alpha-double bond to over 90%, and lower the molecular weight distribution, with the distribution index reaching 1.2, thereby improving the product quality.
Owner:BEIJING UNIV OF CHEM TECH
Method for preparing para-xylene catalyst by amino-modified methanol
ActiveCN107913731AImprove surface propertiesImprove stabilityOrganic-compounds/hydrides/coordination-complexes catalystsCatalystsAcetic acidAlkyl transfer
The invention discloses a method for preparing a para-xylene catalyst by amino-modified methanol. The method adopts dioxane, mesitylene, glacial acetic acid, COF-1 nano material, FeSO4.7H2O and KBH4 as main raw materials. The method disclosed by the invention has the beneficial effects that unique processes and technical parameters are adopted, loads are generated by thermal expansion, amino modification and nano-iron reaction, and by thermal-expansion treatment, the surface adhesiveness of COF-1 is improved, and basis is provided for the following amino modification; by amino modification, the surface property is improved and the benefit for fully and uniformly loading the nano-iron generated in reaction onto porous carriers is achieved; by alkylation reaction of methanol, para-xylene isobtained, so that the steps of isomerization and the like in the traditional process are omitted, the process route is shortened and the once-through yield of the para-xylene is greatly increased.
Owner:XUZHOU NORMAL UNIVERSITY
Platinum complex catalyst as well as preparation method and application thereof
ActiveCN105435846AHigh catalytic efficiencyHigh catalytic activityGroup 4/14 element organic compoundsOrganic-compounds/hydrides/coordination-complexes catalystsPlatinum complexBenzaldehyde
The invention discloses a platinum complex catalyst as well as a preparation method and an application thereof, and relates to the field of platinum complex catalysts. The platinum complex catalyst comprises p-hydroxy benzaldehyde, citric acid, chloroplatinic acid hexahydrate and isopropyl alcohol, wherein a mole ratio of p-hydroxy benzaldehyde to citric acid to chloroplatinic acid hexahydrate is (1.2-1.3): (0.8-1): 1. The catalyst can be used for catalyzing hydrosilylation, particularly used for catalyzing hydrosilylation of allyl glycidyl ether and trimethoxy silane and used for synthesizing KH-560. On the basis of a Speier catalyst, a proper amount of p-hydroxy benzaldehyde and citric acid is added, compared with a conventional platinum complex catalyst, the platinum complex catalyst can maintain higher catalytic activity, shorten the induction period of the reaction, improve the catalytic efficiency of the reaction and increase the yield of KH-560 simultaneously when used for synthesizing KH-560, and in terms of trimethoxy silane, the yield is up to 91.2%.
Owner:湖北新蓝天新材料股份有限公司
Immunity increasing health-care preparation and preparation method thereof
InactiveCN103300362AReduce degradationReduce isomerizationHydrocarbon active ingredientsAnthropod material medical ingredientsPropolisLycopene
The invention discloses an immunity increasing health-care preparation and a preparation method of the immunity increasing health-care preparation. The immunity increasing health-care preparation is prepared by 10-15 parts of lycopene, 1200-1500 parts of cream cheese and 10-15 parts of propolis ethanol extract. The preparation method comprises the following steps of: completely softening the cream cheese at room temperature, adding the lycopene into a stirrer while stirring, continuously stirring for 5-6 minutes, then adding the propolis ethanol extract to stir uniformly, vacuum drying at low temperature finally by utilizing a vacuum dryer, crushing to form powder of 80 meshes, and filling the powder into a capsule. The immunity increasing health-care preparation is mainly used for the medicine preparation personnel and perspective working personnel, and is contributed to improving immunity.
Owner:吴春子
Reduced stiction and mechanical memory in MEMS devices
ActiveUS8120155B2Reduces bonding vibrational constant for bondReduce distortionSemiconductor/solid-state device detailsSolid-state devicesHydrogenEngineering
Owner:TEXAS INSTR INC
Preparation method of macromonomer methallyl alcohol polyoxyethylene ether of polycarboxylate water reducer
The invention relates to a preparation method of polycarboxylate water-reducing agent macromonomer methylallyl alcohol polyethenoxy ether, wherein the preparation method comprises the following process steps of: (1) adding oxirane in the presence of an acidic catalyst boron trifluoride-aether by taking methylallyl alcohol as an initial raw material for condensation reaction to obtain a methylallyl alcohol oligomer; (2) adding an alkali catalyst to the material, removing water or methanol under the condition of 100 DEG C for 1 hour, then adding the oxirane for condensation reaction, and then adding acetic acid for neutralization to obtain the methylallyl alcohol polyethenoxy ether. The preparation method disclosed by the invention is simple and safe in process, and the obtained product is high in relative molecular weight and high in iodine number.
Owner:三江化工有限公司 +1
Preparation method for preparing paraxylene catalyst by virtue of alkylation of methanol
InactiveCN107812539AHigh catalytic activity and stabilityHigh selectivityOrganic-compounds/hydrides/coordination-complexes catalystsHydrocarbonsAlkyl transferMulti element
The invention discloses a method for preparing a paraxylene catalyst by virtue of alkylation of methanol. The method adopts Pt(acac)2, Fe(acac)2, Cu-BTC, tetrahydrofuran, borane-tetrahydrofuran complex, Cu(NO3)2.3H2O and BTC as main raw materials, adopts a super-critical metal compound as a precursor under the effect of supercritical carbon dioxide serving as a fluid medium, adoptes a Cu-BTC porous material as a carrier, and adopts boranes as a reducing agent to react, thus obtaining a pours material loaded binary or multi-element nano alloy catalyst. By virtue of the alkylation reaction of the methanol, paraxylene is obtained, so that an isomeration step in the traditional process is omitted, the technological route is shortened, and the single-course yield of the paraxylene is greatly increased.
Owner:XUZHOU NORMAL UNIVERSITY
Catalyst Mixture for Olefin Metathesis Reactions, Method of Producing Same, and Method of Producing Propylene Using Same
ActiveUS20150273439A1Inhibitory activityHigh activityHeterogenous catalyst chemical elementsCatalystsIsomerizationSilicon dioxide
Provided is mixed catalysts for an olefin metathesis reaction having a high selectivity so that side reactions do not take place and having a high activity, which side reactions are polymerization reactions, isomerization from 2-butene to 1-butene, and reactions of 1-butene with other molecules. Mixed catalysts for an olefin metathesis reaction can be provided, the mixed catalyst comprising a metathesis catalyst which is tungsten oxide supported on a silica carrier and a co-catalyst that is composited from at least three oxides of Groups 1 and 2 metallic elements. By using the catalyst an olefin metathesis reaction of generating propylene from ethylene and 2-butene, the solid basicity to promote the metathesis reaction can be increase, and influences of gas containing isomers of 2-butene contained in raw material gas can be inhibited to increase the production efficiency of propylene even at low temperatures.
Owner:CLARIANT CATALYSTS JAPAN
Fragment-process synthesis method of goserelin
ActiveCN111233980AShort synthesis timeHigh purityLuteinising hormone-releasing hormonePeptide preparation methodsFluid phaseCombinatorial chemistry
The invention synthesizes goserelin by a synthesis method of combining a solid-phase method and a liquid-phase method. Fragments II and III are easy to synthesize and purify and high in purity; different fragments can be synthesized simultaneously, so that the synthesis time of the goserelin is effectively shortened, and the preparation efficiency is improved; and finally, the two fragments are butt-jointed by the liquid-phase method to obtain a goserelin precursor, low-cost coupling is realized, and industrial enlarged preparation is facilitated.
Owner:NANJING LEEWE BIOPHARMACEUTICAL CO LTD
Platinum complex catalyst and its preparation method and use
ActiveCN105435846BHigh catalytic efficiencyHigh catalytic activityGroup 4/14 element organic compoundsOrganic-compounds/hydrides/coordination-complexes catalystsPlatinum complexSilanes
Owner:湖北新蓝天新材料股份有限公司
A kind of preparation method of sulfur dioxide and epoxy compound copolymer
The invention discloses a preparation method of a copolymer of sulfur dioxide and epoxy compounds; a novel polysulfone material is prepared by using SalenMX to catalyze the copolymerization of sulfur dioxide and epoxy compounds, adding epoxy compounds and SalenMX into a high-pressure reactor in sequence, and then injecting sulfur dioxide into the React at 50~100°C, react for 8~48 hours to obtain the product, namely sulfur dioxide and epoxy compound copolymer, dissolve the product in chloroform and precipitate with hydrochloric acid methanol mixture, filter the amber precipitate and wash it repeatedly with methanol for 2~4 times , the washed product is moved to a vacuum drying oven for 8 to 24 hours at room temperature and vacuum-dried to obtain a copolymer of sulfur dioxide and epoxy compounds with higher tacticity; the preparation method involved in the present invention is simple, the catalyst consumption is small, and the reaction The temperature is mild, the yield is high, the structure of the product is good, the cost is low, and industrial production is easy to realize.
Owner:KUNMING UNIV OF SCI & TECH
A kind of preparation method of methanol system p-xylene catalyst
ActiveCN107913731BImprove surface propertiesImprove stabilityOrganic-compounds/hydrides/coordination-complexes catalystsCatalystsThermal dilatationIsomerization
The invention discloses a catalyst method for producing paraxylene from methanol, using dioxane, mesitylene, glacial acetic acid, COF‑1 nanomaterials, FeSO 4 ·7H 2 O.KBH 4 As the main raw material, a unique process and technical parameters are adopted. Thermal expansion-amino modification-nano-iron reaction generates a load. After thermal expansion treatment, the surface adhesion performance of COF‑1 is improved, which provides the basis for subsequent amino modification. After amino modification , the surface properties are improved, which is conducive to the nano-iron generated by the reaction being fully and evenly loaded on the porous carrier. The present invention obtains paraxylene through the methanol alkylation reaction, eliminating the isomerization and other steps in the traditional process. Process route shortened, and the single-pass yield of paraxylene was greatly increased.
Owner:XUZHOU NORMAL UNIVERSITY
Natural and stable solutions of alpha-acids and their use for the improvement of foam quality of beer
ActiveUS9796955B2Reduce isomerizationGood chemical stabilityMilk preservationDough treatmentPhysical chemistryAlpha acid
This invention describes natural hop products that are stable solutions of alpha-acids, as well as their preparation and their use for post-fermentation addition to beer for the purpose of improving the foam quality, as measured by foam stability and foam cling. Improvements in the stability (both physical and chemical) of the alpha-acids are described by incorporation of iso-alpha-acids and tetrahydroiso-alpha-acids as well as various brewery-acceptable co-solvents. The alpha-acids also improve the physical stability of the reduced iso-alpha-acids, including tetrahydroiso-alpha-acids.
Owner:SS STEINER INC
Catalyst for preparing low-carbon olefin through carbon dioxide hydrogenation
PendingCN112958142AFacilitated DiffusionAlkalinePhysical/chemical process catalystsLiquid hydrocarbon mixture productionPtru catalystModified carbon
The invention relates to a catalyst for preparing low-carbon olefin through carbon dioxide hydrogenation, belongs to the technical field of composite materials, and particularly relates to preparation and application of a perovskite-graphite phase carbon nitride composite material. After the composite material is subjected to surface processing, a large number of hydroxyl groups and amino groups exist on the periphery of the structure, and strong interaction can be generated between the composite material and perovskite metal. The catalyst has a unique electronic structure and good chemical stability, the olefin selectivity is improved through interaction between the surface-modified carbon nitride and perovskite iron oxide, and the surface-modified carbon nitride provides a reliable scheme for preparing olefin through hydrogenation reaction.
Owner:NINGXIA UNIVERSITY
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com