32 results about "Heptadecane" patented technology

The invention relates to the field of plasma separation and detection, in particular to a composition for separating plasma and a using method thereof. The composition comprises: a phase change component, which is selected from n-alkanes, which are selected from at least one of n-tetradecane, n-pentadecane, n-hexadecane, n-heptadecane, n-octadecane, n-nonadecane, n-eicosane, n-heneicosane or n-docosane; a liquid phase carrier component, wherein the liquid phase carrier component is selected from silicone oil; the structural framework and rheology regulation and control component comprises fumed silica, and the structural framework and rheology regulation and control component comprises fumed silica; the dispersion and stabilization auxiliary agent component is selected from at least one of TiO2 and BaSO4, the density adjusting filler component is selected from at least one of TiO2 and BaSO4, and the dispersion and stabilization auxiliary agent component comprises a silane coupling agent. According to the device, plasma and blood cells can be reliably, rapidly and effectively separated only through one-time low-temperature centrifugation, and remixing caused by transportation jolting can be avoided.

The invention provides an energy pile space backfilling method based on a high thermal conductivity shaped phase change backfill material. n-heptadecane is used as a phase change material, and an olefin block copolymer is used to shape the phase change material to form a stable solid phase change material. The thermal conductivity of the solid phase change material is improved by adding graphite powder. The formed phase change backfill material has high heat transfer effect, high latent heat and good stability. In addition, a suitable amount of liquid n-heptadecane is filled in the block backfill material stacked inside the energy pile structure to ensure that the liquid n-heptadecane can be uniformly filled in the pore structure between the blocks. While ensuring heat conduction and thermal stability, the block material will not be squeezed or damaged due to excessive volume change in the phase change process, thereby ensuring the structural stability of the phase change backfill material. In addition, the material filled in the energy pile has excellent heat conduction and thermal stability and can effectively play a role.

The invention relates to the technical field of chemical pesticides, in particular to a synthesis method of phyllocnistis appendiculata sex pheromone. According to the synthesis method of the phyllocnistis appendiculata sex pheromone, provided by the invention, the synthesis steps are simplified, the yield of most reactions is 90% or above, the synthesis method is simple and convenient, a target product can be obtained in the shortest time, the phyllocnistis appendiculata sex pheromone (10R, 14R)-10, 14-dimethyl octadecene is prepared through 14-step reactions, and the total yield is 38.5%; according to the method, the phyllocnistis appendiculata sex pheromones (5R, 9R)-5, 9-dimethyl octadecane and (5R, 9R)-5, 9-dimethyl heptadecane are prepared through a reaction in 12 steps, and the total yields are 52.8% and 52.3% respectively.

An agent containing at least one aroma compound selected from the group consisting of E-beta-damascone, S-(2-methyl-3-furyl)ethanethioate, beta-caryophyllene oxide, beta-ionone, 2,5-dihydroxy-1,4-dithiane, methyl anthranilate, S-furfuryl thioformate, 1-isothiocyanate-3-(methylthio)propane, nootkatone, 1,4-dioxacycloheptadecane-5,17-dione, sclareol, and sclareolide is effective for masking an unpleasant smell and for making oral products in which an unpleasant smell is masked.

The application discloses a heptadecyl imidazole type efficient corrosion inhibitor, a preparation method and application thereof, and belongs to the technical field of corrosion inhibitors for steel in an acidic environment. The efficient corrosion inhibitor is methyl 3-(2-heptadecyl imidazole)-2-methyl propionate, and a chemical structural formula is as follows: the efficient corrosion inhibitor is prepared through an addition reaction of 2-heptadecyl imidazole and methyl methacrylate; the application has the advantages of low drug dosage, simple synthesis method, high efficiency, safety and environmental protection; the application is used in an acidic environment such as industrial pickling and oil and gas well acidification, and compared with a conventional imidazole type corrosion inhibitor, a lower drug dosage can achieve high corrosion inhibition efficiency; in particular, in a 1 M HCl solution, when the drug dosage is 300 mg / L, the corrosion inhibition efficiency on Q235 steel reaches 98.11%.

The present invention addresses the problem of: providing an aroma chemical comprising a substance secreted characteristically in the ovulatory period, the aroma chemical, as a result of smelling the fragrance thereof, evoking a pleasant feeling, inducing a tranquil effect in men, and increasing allure in women; as well as providing substances (menstrual cycle markers) for specifying each period of the menstrual cycle, and a method for estimating menstrual cycles using said substances. Specifically, the present invention is an aroma chemical composition comprising one or more compounds selected from the group of compounds consisting of geranylacetone, 9-hexadecenoic acid, and tetradecanoic acid. The present invention also is a method for estimating the menstrual cycle of a subject, the method comprising the detection, in secreted substances from the axilla of the subject, of at least one compound selected from the group of compounds consisting of: octanal; 1-tetradecanol; 1,3-butanediol; 1-hexadecanol; hexanoic acid; dodecanal; propionic acid; 2,6,10,14-tetramethyl-pentadecane; heptadecane; 1-pentadecanol; (Z)-9-octadecenoic acid; 1-dodecanol, 1-octanol; hexahydro-2H-azepin-2-one; 1-tridecanol; tetradecane; octadecane; tetradecanoic acid; (E)-geranylacetone; (Z)-9-hexadecenoic acid; hydrogen sulfide; and 2-pyrrolidone.

The use of renewable energy to reduce fossil fuel consumption is a key strategy to mitigate pollution and climate change, resulting in the growing demand for new sources. Fast-growing proprietary cyanobacterial strains of Fremyella diplosiphon with an average life cycle of 7-10 days, and a proven capacity to generate lipids for biofuel production were studied. We investigated the growth and photosynthetic pigmentation of a cyanobacterial strain (SF33) in both greenhouse and outdoor bioreactors and produced biocrude via hydrothermal liquefaction. The cultivation of F. diplosiphon did not significantly differ under suboptimal conditions (p<0.05), including in outdoor bioreactors with growth differences of less than 0.04 (p=0.035) among various batches. An analysis of the biocrude's components revealed the presence of fatty acid biodiesel precursors such as palmitic acid and behenic acid, and alkanes such as hexadecane and heptadecane, used as biofuel additives. In addition, the quantification of value-added photosynthetic pigments revealed chlorophyll a and phycocyanin concentrations of 0.0011±5.83×10−5 μg / μL and 7.051±0.067 μg / μg chlorophyll a. Our results suggest the potential of F. diplosiphon as a robust species that can grow at varying temperatures ranging from 13° C. to 32° C., while producing compounds for applications ranging from biofuel to nutritional supplements. This paves the way for production-level scale-up and processing of F. diplosiphon-derived biofuels and marketable bioproducts. Fuel produced using this technology will be eco-friendly and cost-effective and will make full use of the geographical location of regions with access to brackish waters.

The invention relates to crystalline form of (3S,7S,10R,13R)-13-benzyl-20-fluoro-7-isobutyl-N-(2-(3-methoxy-1,2,4-oxadiazol-5-yl)ethyl)-6,9-dimethyl-1, 5,8,11-tetraoxo-10-(2,2,2-trifluoroethyl)-1,2,3,4,5,6,7,8,9,10,11,12,13,14-tetradecahydro-[1]oxa[4,7,10,14]tetraazacycloheptadecino[16,17-f]quinoline-3-carboxamide; processes for the preparation thereof, pharmaceutical compositions containing such crystalline form, pharmaceutical compositions prepared from such crystalline form, and their use as a medicament, especially as CFTR modulators.

The invention discloses an application of a molecular sieve supported metal catalyst in preparation of long-chain alkane diesel oil by hydrodeoxygenation of stearic acid. The catalyst is composed of metal and an FAU molecular sieve, and the metal active component accounts for 0.1-20 wt%. According to the invention, the metal is loaded on the molecular sieve by adopting improved wet impregnation, the acid-metal catalyst with high metal dispersity is prepared, and the dual-function attribute of the catalyst can be effectively exerted. The catalysis method comprises the following steps: adding stearic acid, the catalyst, an organic solvent and an internal standard substance (n-octane) into a closed high-pressure reaction kettle, filling hydrogen, and reacting at 150-350 DEG C to obtain the long-chain alkane diesel oil (octadecane and heptadecane). Preferably, the catalyst can achieve complete conversion and the yield of 90% or above in preparation of long-chain alkane diesel oil through hydrodeoxygenation of stearic acid, has good catalytic stability, and is not inactivated after continuous circulation for five times.

The invention provides a hot melt adhesive and a preparation method thereof, and the hot melt adhesive comprises the following components in parts by weight: 60-80 parts of heptadecane dicarboxylic acid polyamide; 10 to 20 parts of a heterocyclic diamine mixture; 20-30 parts of ethylene and a copolymer thereof; 1 part of an initiator; 20 to 30 parts of a compatilizer; and 1 part of an antioxidant. The product produced by the technical scheme of the invention has ultrahigh adhesion to chlorinated polyethylene (CPE), excellent processability and environmental adaptability, and can be widely applied to CPE material adhesion and sealing scenes in the fields of electronic telecommunication, household appliances, automobiles and the like.

The application discloses a catalyst for preparing hydrocarbon-based biodiesel and a preparation method and application thereof, and belongs to the technical field of biodiesel, wherein stearic acid is used as a raw material for preparing hydrocarbon-based biodiesel, and a catalyst of metal nickel (Ni / XC) supported by Xanthoceras sorbifolia Bge shell carbon is used to convert stearic acid into hydrocarbon-based biodiesel (main product is heptadecane) through a deoxygenation reaction under the condition of no external hydrogen gas, the catalyst of the application promotes the deoxygenation reaction through metal-acid dual functional sites supported by the catalyst, and can inhibit the formation of carbon deposition, and the circulation usability of the Ni / XC is improved.

The invention belongs to the technical field of corrosion inhibitors for steel in an acid environment, and particularly relates to a heptadecyl imidazole efficient corrosion inhibitor as well as a preparation method and application thereof. The heptadecyl imidazole high-efficiency corrosion inhibitor is methyl 3-(2-heptadecyl imidazole)-2-methyl propionate, and the chemical structural formula (I) of the heptadecyl imidazole high-efficiency corrosion inhibitor is as follows: # imgabs0. The invention also relates to a preparation method of the heptadecyl imidazole high-efficiency corrosion inhibitor. The heptadecyl imidazole efficient corrosion inhibitor is obtained through addition reaction of 2-heptadecyl imidazole and methyl methacrylate. The efficient corrosion inhibitor is low in dosage, the synthesis method is simple, and the product is efficient, safe and environmentally friendly; when being used as a steel corrosion inhibitor in acid environments such as industrial acid pickling and oil-gas well acidification, the corrosion inhibitor can obtain high corrosion inhibition efficiency with lower dosage compared with a conventional imidazole corrosion inhibitor; especially in a 1M HCl solution, when the dosage of the heptadecyl imidazole efficient corrosion inhibitor is 300mg / L, the corrosion inhibition efficiency on Q235 steel reaches 98.11%.

Provided herein are novel solid forms of each of four compounds: (1) heptadecan-9-yl 8-((2-hydroxyethyl)amino)octanoate (“Compound 1”), (2) heptadecan-9-yl 8-((2-hydroxyethyl)(6-oxo-6-(undecyloxy)hexyl)amino)octanoate (“Compound 2”), (3) heptadecan-9-yl 8-((2-hydroxyethyl)(8-(nonyloxy)-8-oxooctyl)amino)octanoate (“Compound 3”), and (6Z,9Z,28Z,31Z)-heptatriaconta-6,9,28,31-tetraen-19-yl 4-(dimethylamino)butanoate (“MC3”), and related compositions and methods.

This invention discloses an oligomeric surfactant, a biodegradable broad-spectrum and highly efficient bactericide, and their preparation and application. The preparation method includes: mixing 18-nitro-2,3,5,6,8,9,11,12,14,15-decahydrobenzo[b][1,4,7,10,13,16]hexaoxane with a first catalyst and reacting under a hydrogen atmosphere to obtain an intermediate product; mixing the intermediate product with a second catalyst to obtain a crown ether head compound; and reacting the crown ether head compound with dodecylamine and / or heptadecanenonamine to obtain an oligomeric surfactant based on supramolecular assembly. This invention constructs two oligomeric surfactants C 12 N@BDHD and C 17‑9 N@BDHD was used to achieve highly efficient sterilization of bacteria such as Escherichia coli and Staphylococcus aureus by utilizing two oligomeric surfactants.

The present invention relates to a method for determining the presence of Mycobacterium bovis in a subject. The method comprises: (i) determining the level of one or more biomarkers in a sample from the subject; and (ii) comparing the level of said one or more biomarkers with the level of said one or more metabolites in a control sample to determine whether Mycobacterium bovis is present in the subject. The biomarkers are selected from: dihydro-leukotriene B4, 3-hydroxyisovaleric acid, sphingomyelin [SM(d18:2(4E,14Z) / 24:0)], sphingomyelin [SM(d18:1 / 24:1(15Z))], 18:3 cholesteryl ester, an unknown compound 389.21933 m / z (under negative ionisation), an unknown compound 886.71063 m / z (under negative ionisation), citric acid, MG(0:0 / 18:3(6Z,9Z,12Z) / 0:0), pyrocatechol, N-(docosanoyl)-heptadecasphing-4-enine-1-phosphocholine and an unknown compound 359.22107 m / z (under negative ionisation).

The invention relates to the field of pest control, in particular to a method for inducing encarsia sophia to lay male eggs on hosts. It is found for the first time that the n-heptadecane can serve as a host surface contact signal substance, the sex distribution decision of the light yellow encarsia avena is remarkably affected, breakthrough technical value is achieved, and the research blank of the chemical signal regulation and control of the male producing behavior of the heterodiscipline parasitic wasps is filled.

Tick repellents include one or more of 2-methylisoborneol (2-MIB), D-borneol, L-borneol, and a blend of formic acid, undecane, tridecane, (Z)-4-tridecene, heptadecane, (Z)-9-tricosene, pentadecane, (Z)-9-nonadecene, and (Z)-9-heneicosene; and a carrier material. A method of controlling ticks can include dispensing the tick repellent. Personal care products for topical application can include the tick repellent.

The invention relates to the technical field of fastener cleaning agents, and discloses a dephosphorizing agent for a fastener cold machining process and a preparation method thereof.The dephosphorizing agent comprises, by weight, 1-5% of a surfactant, 5-20% of an inorganic alkaline auxiliary agent, 5-10% of a complexing agent, 1-2% of a corrosion inhibitor, 1-5% of a solubilizer and the balance water, and the surfactant comprises a main agent and an auxiliary agent; the main agent is modified 4-(1-heptadecyl) sodium benzenesulfonate, and the modified 4-(1-heptadecyl) sodium benzenesulfonate is modified by polyether. The problems of low dephosphorization rate, poor workpiece surface quality and the like can be solved, and through the synergistic effect of the inorganic alkaline auxiliary agent, the complexing agent and the multi-component surfactant, the crystal structure of a phosphating film can be rapidly damaged, the film dissolution and conversion process is accelerated, the dephosphorization time is obviously shortened, and the production efficiency is improved.

Tick repellents include one or more of 2-methylisoborneol (2-MIB), D-borneol, L-borneol, and a blend of formic acid, undecane, tridecane, (Z)-4-tridecene, heptadecane, (Z)-9-tricosene, pentadecane, (Z)-9-nonadecene, and (Z)-9-heneicosene; and a carrier material. A method of controlling ticks can include dispensing the tick repellent. Personal care products for topical application can include the tick repellent.

The invention relates to a crystal form of (3S, 7S, 10R, 13R)-13-benzyl-20-fluoro-7-isobutyl-N-(2-(3-methoxy-1, 2, 4-oxadiazole-5-yl) ethyl)-6, 9-dimethyl-1, 5, 8, 11-tetraoxo-10-(2, 2, 2-trifluoroethyl)-1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14-tetradecahydro-[1] oxa [4, 7, 10, 14] tetraazacycloheptadecane [16, 17-f] quinoline-3-carboxamide, and a preparation method of the crystal form. The present invention relates to novel crystalline forms, processes for their preparation, pharmaceutical compositions containing such crystalline forms, pharmaceutical compositions prepared from such crystalline forms, and their use as medicaments, in particular as CFTR modulators.

Tick repellents include one or more of 2-methylisoborneol (2-MIB), D-borneol, L-borneol, and a blend of formic acid, undecane, tridecane, (Z)-4-tridecene, heptadecane, (Z)-9-tricosene, pentadecane, (Z)-9-nonadecene, and (Z)-9-heneicosene; and a carrier material. A method of controlling ticks can include dispensing the tick repellent. Personal care products for topical application can include the tick repellent.

This invention belongs to the field of chemical production technology, specifically disclosing a purification method for trimethoxy(pentamethylcyclopentadienyl)titanium, comprising the following steps: vacuum distillation of crude trimethoxy(pentamethylcyclopentadienyl)titanium raw material to obtain a crude distillate; adding 5-20 parts by mass of a modifier to 100 parts by mass of the crude distillate, wherein the modifier is at least one selected from triethylene glycol dibutyl ether, tetraethylene glycol dibutyl ether, n-heptadecane, n-octadecane, and mineral oil, and then distilling to obtain the product. This invention achieves large-scale purification of Star-Ti, achieving a distillation yield of over 75%, with a maximum of over 95%, and obtaining a high-purity product with an organic purity of over 99.5%, solving the problems of difficult large-scale purification, difficulty in purity improvement, and low recovery rate of Star-Ti in existing technologies.

The application discloses a preparation for influencing the tropotaxis behavior of leafhoppers and application of the preparation in leafhopper attraction or avoidance, and belongs to the technical field of pest control. The preparation for influencing the tropotaxis behavior of leafhoppers has effective components containing at least one of phenylacetone, pinene, linalool, ocimene, linalool oxide, alpha-pinene, sabinene, eucalyptol, heptadecane and p-cymene. The combined and screened attractants have a significant attraction effect on leafhoppers, and after the attractants are prepared into the preparation, the preparation can be applied to leafhopper attraction in a field, and the effect is remarkable.

The application belongs to the technical field of chemical synthesis, and specifically provides a preparation method of N-[4,6-bis(heptadecyloxy)-1,3,5-triazinyl-2-yl]hexane-1,6-diamine, which comprises the following steps: S1, performing ether exchange reaction of 2-chloro-4,6-dimethoxy-1,3,5-triazine and 9-heptadecanol to generate 2-chloro-4,6-bis(heptadecyloxy)-1,3,5-triazine; S2, performing reaction of the 2-chloro-4,6-bis(heptadecyloxy)-1,3,5-triazine and an ammoniating reagent to generate 4,6-bis(heptadecyloxy)-1,3,5-triazin-2-amine; and S3, performing nucleophilic substitution reaction of the 4,6-bis(heptadecyloxy)-1,3,5-triazin-2-amine and 6-bromohexylamine hydrobromide to generate N-[4,6-bis(heptadecyloxy)-1,3,5-triazinyl-2-yl]hexane-1,6-diamine. According to the preparation method of the embodiment of the application, the reaction is mild, the selectivity is high, the yield is high, the by-products are few, the generated three wastes are few, and the route is feasible.

The invention discloses a chin protection liner for a sports helmet, and relates to the technical field of sports helmets, the chin protection liner comprises a honeycomb structure area and a wave structure area; the liner is made of a composite material containing polyformaldehyde, a thermoplastic polyurethane elastomer, a nucleating agent, ionic liquid and an epoxy compound; the ionic liquid is 1-butyl-3-methylimidazolium hexafluorophosphate, and the ionic liquid is an ionic liquid; the epoxy compound comprises 1, 2-epoxy hexadecane and 9-octylheptadecane epoxy, and the epoxy compound comprises 1, 2-epoxy hexadecane and 9-octylheptadecane epoxy; by introducing the ionic liquid and the specific epoxy compound, toughening modification of the pad material is realized, the impact toughness and ductility of the material are improved, and good rigid-tough balance is maintained, so that the chin protection pad for the sports helmet can provide lasting and effective protection in a complex and changeable impact environment, and the service life of the chin protection pad is prolonged. Meanwhile, the requirements for temperature change resistance and aging resistance are met, and the material is widely applied to the field of various sports protectors.

The invention discloses oxygen release purification type decorative plate facing paper and a preparation method thereof, and relates to the technical field of facing paper. The oxygen-release purification type decorative plate facing paper comprises the following raw materials in parts by weight: 60-85 parts of wood pulp, 8-10 parts of polyester fibers, 3-7 parts of natural tourmaline powder, 0.1-0.2 part of a dispersing agent, 1-2 parts of an anti-aging agent, 1-3 parts of an antibacterial agent, 5-7 parts of a wet strength agent and 200-300 parts of deionized water. The preparation method comprises the following steps: reacting triphenylphosphine with 2-bromoethyl acrylate to generate an intermediate A, reacting the intermediate A with 4-(aminomethyl) pyridine to generate an intermediate B, and reacting the intermediate B with 17-chloro-3, 6, 9, 12, 15-pentaoxaheptadecane-1-alcohol to generate the antibacterial agent. The oxygen-releasing purification type decorative plate facing paper prepared by the invention has good anti-aging performance and antibacterial performance.

The invention discloses a catalyst for preparing alkyl biodiesel as well as a preparation method and application thereof, and belongs to the technical field of biodiesel. Stearic acid is used as a raw material for preparing the alkyl biodiesel, a catalyst of xanthoceras sorbifolia bunge shell carbon loaded metal nickel (Ni / XC) is adopted, and the alkyl biodiesel is prepared under the condition of no additional hydrogen. The stearic acid is converted into the alkyl biodiesel (the main product is heptadecane) through the deoxidation reaction, the deoxidation reaction is promoted by the metal-acid bifunctional sites loaded on the catalyst, the formation of carbon deposition can be inhibited, and the recyclability of Ni / XC is improved.

The invention discloses a synthesis method of (5S, 6R)-5, 6-epoxy-2-heptadecene-1-alcohol, which comprises the following steps: reacting (Z)-1-bromotetradecene with substituted phenyl propargyl ether, performing epoxidation reaction under the action of an epoxidation catalyst, and removing substituted phenyl under the action of an oxidant to obtain (5S, 6R)-5, 6-epoxy-2-heptadecene-1-alcohol. And adding 2, 6-epoxy-2-heptadecene alkyne-1-alcohol into the reaction kettle. The method is mild in synthesis condition, simple and convenient to operate, high in yield, low in preparation cost and good in economic benefit.

The present application belongs to the technical field of oil exploitation, and particularly relates to an environment-friendly oil cleaning liquid, a preparation method and application thereof. The environment-friendly oil cleaning liquid is composed of one or more of the following substances:, and the preparation method specifically comprises the following steps: adding 1-aminoethyl-2-heptadecyl imidazoline and isopropyl alcohol / water mixed solvent (V:V=1:1) into a reactor, stirring uniformly, adding sodium chloroethanesulfonate, and keeping warm to react; adding 3-chloro-2-hydroxypropyl phosphate sodium, keeping warm to react, and obtaining the environment-friendly oil cleaning liquid. The molar ratio of sodium chloroethanesulfonate, 3-chloro-2-hydroxypropyl phosphate sodium and 1-aminoethyl-2-heptadecyl imidazoline is 0.1-1:0.1-1:1. The oil cleaning liquid has the advantages of simple preparation, environmental protection, and high oil washing efficiency.