21 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.

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 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 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.

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).

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 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.

The invention relates to the technical field of photocuring materials, in particular to UV-curable polybutadiene insulating resin and a continuous flow preparation method, which comprises the following steps: uniformly mixing double-end carboxyl polybutadiene resin with glycidyl ester or ether with double bonds, introducing the mixed material into a continuous flow reaction kettle, and carrying out a ring-opening esterification reaction, so as to obtain the UV-curable polybutadiene insulating resin. A plurality of layers of plates are arranged in the continuous flow reaction kettle, and each layer of plate is filled with an imidazole catalyst; after the reaction is completed, discharging and cooling to below 60 DEG C, and filtering to obtain the polybutadiene insulating resin; wherein the imidazole catalyst is 1-cyanoethyl-2-ethyl-4-methylimidazole, 2-heptadecyl imidazole or 2-phenylimidazole, and the general formula of the imidazole catalyst is shown in the description. The reaction activity and the crosslinking density of the polybutadiene resin during UV curing are improved. The production efficiency is high, the catalyst can be repeatedly used, the quality of the resin product is high, polybutadiene has excellent insulativity, but the double bond activity of polybutadiene is low, and the modified resin can be used as matrix resin in the UV coating.

The invention relates to the field of organic synthesis, in particular to a synthetic method of heptadecane-9-yl-8-((2-ethoxyl) (6-oxo-6-((undecyloxy) hexyl) amino) octanoate). The synthesis method comprises the following steps: carrying out condensation reaction on 9-heptadecanol and 8-bromocaprylic acid to obtain 8-bromocaprylic acid-9-heptadecanol ester; the preparation method comprises the following steps: carrying out substitution reaction on 8-bromocaprylic acid-9-heptadecanol ester, 6-bromohexanoic acid undecanol ester and ethanolamine to obtain a crude product; and refining the crude product, so as to obtain the heptadecane-9-yl-8-((2-ethoxyl) (6-oxo-6-((undecyloxy) hexyl) amino) octanoate). The synthesis method provided by the invention has the characteristics of simplicity and convenience in operation, short route, high repeatability, relatively high total yield and facilitation of industrial production.