31 results about "Branched alkane" patented technology

The invention relates to the technical field of biological aviation kerosene, and discloses a process for preparing biological aviation kerosene from waste grease. The method comprises the following steps: introducing waste oil into a hydrofining reactor, introducing hydrogen, carrying out a hydrodeoxygenation reaction under the catalysis of a hydrogenation catalyst, carrying out a reaction on the obtained hydrodeoxygenated oil in an isomerization pour point depressing reactor, and finally carrying out isomerization hot high-pressure separation treatment, isomerization cold high-pressure separation treatment and rectification tower segmentation to obtain the biological aviation kerosene. The specific surface area of a carbon matrix of the hydrogenation catalyst is large, the void structure is rich, a large number of Ni-Mo-P active catalytic centers can be exposed, precious metals such as platinum and ruthenium do not need to be added, the hydrodeoxygenation reaction efficiency of waste oil and fat is remarkably improved, the mass fraction of branched paraffin and cycloparaffin in biological aviation fuel is high, and the combustion performance is better.

The invention discloses an emulsion polymer which contains a structural unit A, a structural unit B, a structural unit C and a structural unit D. The structural unit A has a structural unit shown in a formula (1), the structural unit B has a structural unit shown in a formula (2), the structural unit C has a structural unit shown in a formula (3), and the structural unit D has a structural unit shown in a formula (4). The weight percentage of the structural unit A is 5-15%, the weight percentage of the structural unit B is 2-40%, the weight percentage of the structural unit C is 10-70%, the weight percentage of the structural unit D is 1-80%, and the viscosity average molecular weight of the emulsion polymer is 30 million to 30 million; wherein R is an alkyl group, preferably a straight chain alkyl group or a branched chain alkyl group of C6-C18.

A water-in-oil microemulsion comprising water; an oil, wherein at least 80 wt%, preferably, from 80 to 100 wt%, more preferably, from 80 to 95% of the oil is a silicone oil, ester oil, and / or a linear or branched alkane comprising 8 to 34 carbons; and a liquid non-ionic surfactant having an HLB from 7 to 13, wherein a weight ratio of the non-ionic surfactant to the oil is from 10:1 to 1.5:1, wherein the water-in-oil microemulsion is transparent and mono-phasic, and wherein the pH of the emulsion is between from 4.5 to 7.5.

The invention discloses binary hydrocarbon insulating liquid, a preparation method and application of the binary hydrocarbon insulating liquid in an oil-immersed transformer, and belongs to the technical field of liquid insulating dielectrics. The binary hydrocarbon insulating liquid is composed of the following components in percentage by volume: 10-30% of short-chain low-branched alkane; the balance is long-chain multi-branched alkane, and the total percentage is 100%; in the short-chain low-branched alkane, the number of carbon atoms of a first main chain is 15-20, the number of first branched chains is 1-2, the first branched chains are methyl and / or ethyl, and the first branched chains are distributed at the end part of the first main chain; in the long-chain multi-branched alkane, the number of carbon atoms of a second main chain is 21-28, the number of second branched chains is 2-6, and the second branched chains are methyl and / or ethyl. The binary hydrocarbon insulating liquid provided by the invention has excellent lightning impulse insulating performance.

A long-chain composition has at least one long-chain alkane selected from the group consisting of C9-18 linear or branched alkanes and at least one long-chain carboxylic acid selected from the group consisting of C9-18 linear or branched, saturated or unsaturated aliphatic monocarboxylic acids. The mass ratio of the long-chain alkane to the long-chain carboxylic acid ranges from 1:1 to 40:1. The long-chain composition has a higher fermentation degree or higher substrate utilization rate and the like, when used as a starting material in the production of long-chain dibasic acids via fermentation.

The invention relates to the technical field of organic functional materials, in particular to a diaza pyrene cyanine compound as well as a preparation method and application thereof. The structural formula of the diaza pyrene cyanine compound is as shown in formula I, wherein R1 is straight-chain or branched-chain alkane with a hydrophilic group and / or a hydrophobic group; and R2 is straight-chain or branched-chain alkane with a hydrophilic group and / or a hydrophobic group. According to the present invention, the dibromo-diaza pyrene compound is adopted as the raw material, the dibromo-diaza pyrene compound is combined with the electropositive atom or the atomic group to construct the diaza pyrene cyanine compound, the diaza pyrene cyanine compound has six reaction sites, the development of the novel pyrenyl derivative is convenient, the high-performance pyrenyl photoelectric material is prepared by regulating the molecular structure, and the application in the optical function material is easily achieved.

The present application relates to the technical fields of bio-jet fuel, and discloses a preparation method of bio-jet fuel based on soapstock hydrogenation, wherein a Ni-Mo-P molecular sieve hydrogenation catalyst is filled into a hydrogenation refining reactor, pretreated soapstock is fed into the hydrogenation refining reactor through a preheater, hydrogen is fed into the hydrogenation refining reactor, hydrogenation deoxidization reaction is carried out, high-condensation HVO / deoxidized oil is obtained, the high-condensation HVO / deoxidized oil is fed into an isomerization condensation reduction reactor, hydrogen is fed into the isomerization condensation reduction reactor, isomerization condensation reduction reaction is carried out, and bio-jet fuel based on soapstock hydrogenation is obtained. The Ni-Mo-P active catalytic sites are uniformly formed in the molecular sieve matrix, the active catalytic sites have high dispersity and are not easy to be agglomerated, the pretreated soapstock fatty acid has higher selective hydrogenation deoxidization catalytic effect, the prepared bio-jet fuel has the advantages of high branched alkane content and low aromatic content, and has excellent combustion performance.

The invention belongs to the technical field of fine fluorine chemical industry, and discloses a perfluoroalkane dielectric cooling liquid composition with customizable performance and a selective continuous preparation method thereof. The composition is composed of saturated derivatives of hexafluoropropylene oligomer and can comprise a perfluoro-branched hexane isomer mixture, a perfluoro-branched nonane isomer mixture and a perfluoro-branched alkane higher oligomer mixture with the polymerization degree not lower than 7, and key performance such as the boiling range, the viscosity and the freezing point can be customized by regulating and controlling the proportion of all the components. According to the preparation method, an integrated continuous flow system is adopted, and on-demand production of cooling liquid with different component proportions is realized through the steps of controllable initial oligomerization, selectable controllable chain growth and continuous saturation. The product provided by the invention has excellent comprehensive thermophysical properties, is suitable for immersed cooling of high-heat-flux electronic equipment such as an AI data center and a super computer, and has the advantages of high process platformization degree and good economical efficiency.

The invention relates to a preparation method of a beta-configuration molecular sieve and MOR-configuration molecular sieve composite microporous material with a double-microporous structure and application of the composite microporous material in light alkane isomerization. The preparation method of the composite molecular sieve comprises the following steps: providing a first molecular sieve containing a first template agent, and then preparing a second molecular sieve in the presence of a second template agent and the first molecular sieve containing the first template agent to obtain the composite molecular sieve, wherein the first template agent and the second template agent are different in chemical structure, and the first molecular sieve is a beta-configuration molecular sieve and the second molecular sieve is an MOR-configuration molecular sieve. The composite molecular sieve provided by the invention can effectively improve the selectivity of high-octane-number component multi-branched-chain alkane, thereby improving the product quality.

A process for oxidizing an alkyl substrate may comprise combining an alkyl substrate (e.g., propane, n-butane) and ozone in a liquid phase medium comprising a branched alkane activator (e.g., isobutane) and a protic additive (e.g., water) under conditions sufficient to oxidize the alkyl substrate to products. The alkyl substrate may be selected from linear and cyclic alkanes.

The present invention relates to an anhydrous liquid cosmetic composition comprising, in a physiologically acceptable medium: - at least one alkylcellulose, preferably an ethylcellulose, - at least one polyamide lipophilic polycondensate, and - at least one volatile oil, preferably selected from the group consisting of C8-C16 branched alkanes, C9-C14 linear alkanes, and mixtures thereof, and - optionally also at least one dyestuff.

The invention relates to a powdery ethylene homopolymer with a high melt index, which has a melt index of 600-2500g / 10min, a molecular mass distribution of 3.0-10.0, a melting point of 115-135 DEG C, a true density of 0.950-0.980 g / cm < 3 >, a crystallinity of 70-95%, a bulk density of 0.30-0.55 g / cm < 3 > and an average particle size of 50-500mm under a load of 2.16 kg and a temperature of 190 DEG C, and under an ethylene kettle slurry polymerization condition, a Ziegler type catalyst and a Ziegler-Natta type catalyst are used as main catalysts, according to the preparation method, ethylene is subjected to kettle type slurry homopolymerization under the conditions that the polymerization temperature of ethylene and hydrogen is 70-100 DEG C, the polymerization pressure is 1.0-4.2 MPa and the molar ratio of hydrogen to ethylene in a gas phase of a reaction kettle is (2.0-7.0): 1 by taking ethylene as a raw material, alkyl aluminum or halogenated alkyl aluminum as a cocatalyst and straight-chain alkane, branched-chain-containing alkane, cycloalkane and branched-chain-containing cycloalkane as a polymerization solvent, the preparation method is simple and easy to control, and the obtained ethylene homopolymer has high melt index, true density, melting point and crystallinity and narrow particle size distribution.

Branched paraffins formed as a hydrogenated reaction product of one or more linear alpha olefins (LAOs) oligomerized with a BF; catalyst system and comprising at least about 90 wt. % branched paraffin dimers may have advantageous heat transfer properties. Heat transfer fluids comprising the branched paraffins may be placed in contact with a heat-generating component, such as those found in electric vehicles, battery systems, and other locations in need of thermal management. Branched paraffin dimers formed from one or more LAOs having about 8 to about 12 carbon atoms may collectively have a Mouromtseff Number ranging from about 10,000 to about 16,000 kg / (s2.2·m0.6·K) at 80° C. a thermal conductivity at 80° C. of about 0.125 W / m·K or higher, and a flash point of about 140° C. or higher.

The present invention relates to a composition, preferably cosmetic, comprising at least one wax consisting of a mixture of long-chain saturated alkanes including a fraction of branched chains, of the microcrystalline wax type and at least one apolar oil liquid at room temperature selected from among branched alkanes

Composition comprising a mixture of microcrystalline wax and a nonpolar oil selected from branched alkanes. The present invention relates to a composition, preferably cosmetic, comprising at least one wax consisting of a mixture of long-chain saturated alkanes having a fraction of branched chains, of the microcrystalline wax type, and at least one nonpolar oil liquid at room temperature selected from branched alkanes. Figure for the abstract: none

The application discloses an oil-soluble yellow dye shown in formula A, a preparation method thereof and application of the oil-soluble yellow dye as a colorant in a non-aqueous solvent, and has the following advantages: (1) raw materials are simple and easy to obtain, cost is low, a synthesis process is simple, and industrialization is easy; (2) a product with rich types and complex composition can be easily obtained by adjusting a halogenated hydrocarbon type and reaction conditions, and remarkable advantages are possessed in performance control and formula security; (3) the product shows good solubility in various organic solvents, can be well dissolved at low concentration and high concentration, and has good application prospect in ink, paint and polymer coloring; wherein R1 is H or a C2-C12 even carbon straight-chain or branched-chain alkane, R2 is H or a C2-C12 even carbon straight-chain or branched-chain alkane, and R1 and R2 cannot be H simultaneously.

Described are new processes for making sustainable jet fuels and components thereof, based upon generating bio-ethylene by dehydration of biomass ethanol or a bio-syngas ethanol, and subsequently employing a tailored selection of oligomerization, cyclization, and hydrogenation reactions to generate each class of compounds which can be used as components in a sustainable aviation fuel. For example bio-ethylene oligomerization can provide olefin oligomers which can be hydrogenated to linear and branched paraffins, these paraffins can be cyclized to form bio-sourced aromatic compounds which subsequently can be hydrogenated to form cycloparaffins or naphthenes. These compounds can be blended to provide sustainable products in the kerosene jet fuel range (C8-C16) or wide-cut jet fuel range (C5-C15 or C4-C16).

The invention discloses a method for preparing double-ligand ZIF-8 through a microwave method, the double-ligand ZIF-8 prepared through the method and application of the double-ligand ZIF-8. The double-ligand ZIF-8 can be used for separating single-branched paraffin from a C6-C9 isoparaffin mixture.

Two-phase composition for cleansing and / or removing make-up from keratin materials, consisting of separate aqueous and oily phases, comprising: a) at least one branched alkane containing from 8 to 18 carbon atoms; b) at least one delayer of formula (I) in which: R represents a linear alkyl radical having from 12 to 16 carbon atoms, R 1 and R 2 independently represent a C1-C4 alkyl radical, Q- represents an anionic counterion, in particular a halide ion such as chloride; c) at least one chelating agent chosen from aminocarboxylic acids and salts thereof, and d) at least one non-ionic surfactant chosen from polycondensates of ethylene oxide and propylene oxide, in which the composition does not contain silicone. Also a process for cleansing and / or removing make-up from keratin materials, in particular the skin, comprising shaking the composition according to the application to form an emulsion, applying said emulsion to the keratin materials, in particular the skin, and rinsing off said composition after an optional period of time.

The application discloses a synthetic method of eticaptide, belongs to the technical field of polypeptide synthesis, and particularly relates to a synthetic method of eticaptide. The synthetic method comprises the following steps: taking a polypeptide synthesis carrier as a starting material, sequentially reacting with amino acids to perform coupling, performing cleavage treatment through a trifluoroacetic acid cutting liquid, and then reacting with H-Cys-OH.HCl to obtain eticaptide. The polypeptide synthesis carrier is obtained by the following steps: first, reacting 4,4'-dihydroxybenzophenone with a halogen compound, then performing reduction treatment, then reacting with ethyl carbamate, and finally performing sodium hydroxide treatment. The halogen compound is selected from C10-30 straight-chain or branched-chain alkanes containing halogen substituents, wherein the halogen is bromine, chlorine, fluorine or iodine. The eticaptide prepared by the synthetic process has high yield and high purity, the synthesis efficiency and the purification efficiency of the eticaptide are significantly improved, and the eticaptide has a good application prospect.

A biphasic composition having a stable interface. The present invention relates to a composition comprising a separate aqueous phase and an oil phase, characterized in that the oil phase comprises a mixture of squalane, dioctyl ether and a linear or branched alkane having 15 to 19 carbon atoms, said composition being substantially free of surfactants and siloxanes. The invention also relates to related methods and cosmetic uses.

The invention discloses a synthesis method of Itecatide, belongs to the technical field of polypeptide synthesis, and particularly relates to a synthesis method of Itecatide. The synthesis method comprises the following steps: by taking a polypeptide synthesis carrier as an initial raw material, sequentially reacting with amino acid for coupling, carrying out cracking treatment through trifluoroacetic acid cutting liquid, and then reacting with H-Cys-OH.HCl to obtain the Itecatide, the polypeptide synthesis carrier is prepared by the following steps: reacting 4, 4 '-dihydroxybenzophenone with a halogen compound, carrying out reduction treatment, reacting with ethyl carbamate, and treating with sodium hydroxide. The halogen compound is selected from C10-30 straight-chain or branched-chain alkane containing halogen substituent groups, and halogen is bromine, chlorine, fluorine or iodine. The Itecatide prepared by adopting the synthesis process provided by the invention is high in yield and high in purity, the synthesis efficiency and purification efficiency of the Itecatide are remarkably improved, and the Itecatide synthesis process has a good application prospect.

The application discloses a binary hydrocarbon insulating liquid, a preparation method and application in oil-immersed transformers, and belongs to the technical field of liquid insulating dielectric. The binary hydrocarbon insulating liquid is composed of the following components in percentage by volume: short-chain low-branched alkane: 10%-30%; the rest is long-chain multi-branched alkane, and the total is 100%; in the short-chain low-branched alkane, the number of carbon atoms in the first main chain is 15-20, the number of the first branch is 1-2, the first branch is methyl and / or ethyl, and the first branch is distributed at the end of the first main chain; in the long-chain multi-branched alkane, the number of carbon atoms in the second main chain is 21-28, the number of the second branch is 2-6, and the second branch is methyl and / or ethyl. The binary hydrocarbon insulating liquid has excellent lightning impulse insulation performance.

The application relates to the technical field of bio-jet fuel, and discloses a process for preparing bio-jet fuel from waste oil. The waste oil is introduced into a hydrogenation refining reactor, hydrogen is introduced, a hydrogenation deoxygenation reaction is carried out under the catalysis of a hydrogenation catalyst, the obtained hydrogenation deoxygenation oil is subjected to a reaction in an isomerization condensation reduction reactor, finally, the hydrogenation deoxygenation oil is subjected to isomerization hot high-pressure separation and isomerization cold high-pressure separation treatment, and is cut into a rectifying tower, so that bio-jet fuel is obtained. The specific surface area of the carbon base body of the hydrogenation catalyst is large, the void structure is rich, a large number of Ni-Mo-P active catalytic centers can be exposed, noble metals such as platinum and ruthenium do not need to be added, the hydrogenation deoxygenation reaction efficiency on the waste oil is significantly improved, the mass fraction of branched alkanes and naphthenes in the bio-jet fuel is high, and the combustion performance is better.

A method for performing Mitsunobu reaction between an alcoholic hydroxyl group donor and an active hydrogen donor, comprising the following steps: reacting the alcoholic hydroxyl group donor and the active hydrogen donor with a trihydrocarbylphosphine reagent and an azodicarboxylate reagent in the presence of an organic solvent, wherein the organic solvent is a linear or branched alkane containing 8 to 16 carbon atoms.

The invention provides low-temperature-curing low-thermal-expansion photosensitive polyimide resin which is characterized in that the low-temperature-curing low-thermal-expansion photosensitive polyimide resin has a structure shown in a formula I. In the formula I, X is a residue of polyamic acid ester polymerized tetracarboxylic dianhydride; y at least comprises a group of a nitrogen-containing aromatic heterocyclic structure; r1 is a group of a C4-C20 polymerizable olefin structure; r2 is a straight chain or branched chain alkane group of C1-C12, or a straight chain or branched chain alkane group containing an ether bond-O-; m at least comprises one of amido and anhydride; n is the degree of polymerization, and n is equal to 2-150. The photosensitive polyimide resin provided by the invention simultaneously contains an allyl side chain and a fat side chain, the main chain contains a nitrogen-containing aromatic heterocyclic ring, and the aims of low curing temperature, low thermal expansion coefficient, high adhesive force with a copper substrate and resolution of cyclopentanone development can be simultaneously achieved.

The invention relates to compositions of α,α-branched alkane carboxylic acids glycidyl esters which derived from rosin and or hydrogenated rosin reacted with an epihalohydrin. The above glycidyl esters compositions can be used for example, as monomer in binder compositions for paints or adhesives, as reactive diluent or as acid scavenger. This invention is also about the uses of rosin and or hydrogenated rosin glycidyl ester in combinations with polyester polyols, or acrylic polyols, or polyether polyols.

The application discloses a silica gel material and a preparation method thereof, a silica gel tube and an implant and a preparation method and application thereof. The silica gel material comprises the following components in parts by weight: R-vinyl polysiloxane: 100 parts; reinforcing agent: 10-80 parts; catalyst: 0.000002-1 part; wherein R in the R-vinyl polysiloxane is a substituted or unsubstituted C1-C5 linear or branched alkane, a substituted or unsubstituted C6-C 20 aromatic hydrocarbon; the content of the vinyl group in the R-vinyl polysiloxane is 0.1-0.5 mol%; the reinforcing agent contains a hydrophilic group; the content of the Si-H group in the hydrogen-containing silicone oil is 0.18-1.6 mol%; the molar ratio of the Si-H group in the hydrogen-containing silicone oil to the vinyl group in the R-vinyl polysiloxane is (0.5-10):1; and optionally, an inhibitor is further included. The silica gel material provided by the application can meet the mechanical properties, increase the permeability of water to the silica gel tube, improve the release amount of the drug, and improve the defect of low in-vitro release degree in the prior art.

The present invention relates to electrochromic devices and compositions that include a polymer that includes residues of, or a polymerizable composition that includes, ((meth)acrylate-amine cation bis(substituted-sulfonyl)imide anion)) monomer represented by the following Formula (I),With reference to Formula (I): R1 is in each case independently hydrogen or methyl; R2 is in each case independently a single bond, a divalent linear or branched alkane, or divalent linear or branched cycloalkane; Y+ is in each case independently an amine cation, such as for example —N(R3)(R4)(R5)+; and X− is a bis(substituted-sulfonyl)imide anion represented by the following Formula (II),