18 results about "Decalin" patented technology

Provided is a copolymer rubber composition from which a crosslinked molded article having well-balanced and excellent properties in terms of low hardness, small compression set at low temperatures, and high abrasion resistance can be obtained. [Solution] The copolymer composition comprises 100 parts by mass of an ethylene-α-olefin-non-conjugated polyene copolymer (P) having structural units derived from ethylene [A1], structural units derived from an α-olefin [A2] having 4 to 20 carbon atoms, and structural units derived from a non-conjugated polyene [A3], wherein the [A2] contains 1-butene, and satisfies the following (1) and (2): (1) the ratio [[e] / [x]] of the molar fraction [e] of the structural units derived from ethylene [A1] to the molar fraction [x] of the structural units derived from the α-olefin [A2] having 4 to 20 carbon atoms is 40 / 60 to 90 / 10; and (2) the intrinsic viscosity [η] measured in decalin at 135°C is 5.0 to 7.0 dl / g.

Provided is a vibration-damping rubber composition that is excellent in processability and vibration-damping properties in a low-temperature atmosphere. [Solution] A vibration-damping rubber composition comprising an ethylene-α-olefin-non-conjugated polyene copolymer (A) having structural units derived from ethylene [A1], structural units derived from an α-olefin [A2] having 4 to 20 carbon atoms, and structural units derived from a non-conjugated polyene [A3], wherein the α-olefin [A2] having 4 to 20 carbon atoms contains 1-butene, and satisfying the following requirements (1) and (2): requirement (1) the ratio [[e] / [x]] of the molar fraction [e] of the structural units derived from ethylene [A1] to the molar fraction [x] of the structural units derived from the α-olefin [A2] having 4 to 20 carbon atoms is 40 / 60 to 90 / 10; and requirement (2) the intrinsic viscosity [η] measured in decalin at 135°C is 5.0 to 7.0 dl / g.

The application belongs to the technical field of liquid crystal materials, and relates to a trans-decahydronaphthalene indole liquid crystal compound and a preparation method thereof. The application provides a trans-decahydronaphthalene indole liquid crystal compound, which has a chemical structural formula as shown in formula (I). The preparation of the compound of formula (I) comprises the following steps: obtaining a compound of formula (III) from a compound of formula (II) through a Grignard reaction, oxidizing the compound of formula (III) to obtain a compound of formula (IV), and obtaining the compound of formula (I) from the compound of formula (IV) through a Fischer indole synthesis reaction. The preparation method is simple in operation, high in product yield and purity, and the prepared trans-decahydronaphthalene indole liquid crystal compound can be applied to special liquid crystal materials.

This invention discloses a highly efficient method for synthesizing cyanuric acid in the field of green chemistry and chemical engineering. The method uses urea as a raw material and reacts it in a decahydronaphthalene solvent under the catalysis of a phosphotungstic acid-confined three-dimensional ordered macroporous alumina solid acid catalyst. Specifically, urea, solvent, and catalyst are mixed and heated under nitrogen protection. After cooling, filtration, and solvent washing, the resulting filter cake is separated from the crude product by stirring with hot water. The separated catalyst is dried and can be recycled. The filtrate containing the product is cooled, crystallized, filtered, washed, and dried to obtain high-purity cyanuric acid. The catalyst used in this method is prepared using a template method and confinement technology, exhibiting a stable structure and significantly inhibiting the loss of active components. This invention features a simple and efficient process, easy catalyst recovery and recycling, and high product yield and purity, demonstrating promising prospects for industrial application.

To provide a copolymer composition which has a high crosslinking rate, is excellent in productivity and processability, and gives a crosslinked molded article excellent in physical properties (for example, hardness, tensile stress at break, tensile elongation at break, and compression set).SOLUTION: A polymer (0dL) having an intrinsic viscosity [η] (in decalin at 135 °C.) of 2. 0dL / g or more and less than 4. S1 / g, a polymer (S2) having an intrinsic viscosity [η] (in decalin at 135 °C.) of 0. 5dL / g or more and less than 2. 0dL / g, a specific hydrosilyl group-containing compound (Y), S2, each of the copolymers (S1) and (S2) has a structural unit derived from ethylene (A), a structural unit derived from an α - olefin (B) having 3 to 20 carbon atoms, and a structural unit derived from a non-conjugated polyene (C).SELECTED DRAWING: None

The invention provides a low-temperature aromatic hydrocarbon saturated non-noble metal catalyst as well as a preparation method and application thereof. The catalyst Ni / CeAlOx takes a cerium-aluminum composite oxide as a carrier and metal nickel as an active component, and has the advantages of nanoscale dispersion, high specific surface area and surface acidity of 150-165 umol / g, and the preparation method comprises the following steps: dissolving a nickel salt, a cerium salt, an aluminum salt and urea in deionized water, carrying out a hydrothermal reaction to obtain a precursor, and carrying out calcination and hydrogen reduction to obtain the catalyst Ni / CeAlOx. The catalyst does not need to be pre-vulcanized, does not contain noble metal, shows excellent deep hydrogenation activity and selectivity of aromatic hydrocarbon under the conditions of low temperature (130-280 DEG C) and low pressure (2.5 MPa), can realize complete conversion and decahydronaphthalene selectivity of over 96% for naphthalene hydrogenation, can efficiently treat a high-temperature coal tar complex system, greatly reduces the aromatic hydrocarbon content, and has a wide application prospect. The method has the advantages of low cost, environmental friendliness and the like, and provides an efficient catalytic solution for high-value utilization of coal tar.

The application discloses a nickel-based catalyst taking a Ni:EDTA complex as a nickel source and a preparation method and application thereof, the nickel source of the nickel-based catalyst is the Ni:EDTA complex, the nickel-based catalyst comprises a carrier and an active component, the active component is a nickel species, the carrier is Al-MCM-41, and the nickel species accounts for 5-25 wt.% of the total mass of the nickel-based catalyst. The nickel-based catalyst prepared by taking the Ni:EDTA complex as the nickel source has a particle size of 4.79-10.19 nm, and the nickel-based catalyst has high catalytic activity and high selectivity of decalin in a catalytic hydrogenation saturation reaction of naphthalene.

The present application relates to oil and gas field development technical field, disclose a kind of underground hydrogen source based on low-temperature catalytic hydrogen transfer of hydrocarbon and its preparation method and use method.The underground hydrogen source based on low-temperature catalytic hydrogen transfer of hydrocarbon contains: (a) rare earth-based complex, the rare earth-based complex is the complex of hydrocarbon liquid and one or more rare earth compounds;And (b) naphthalene.The underground hydrogen source based on low-temperature catalytic hydrogen transfer of hydrocarbon described in the application in the process of use, in illite-containing high-temperature porous medium, by the action of rare earth compound, light hydrocarbon and naphthalene, hydrogen and hydrogenation product (such as tetrahydro naphthalene, decalin etc.) of naphthalene can be generated, that is, hydrogen production and hydrogen storage effect.

[Problem] To provide a thermoplastic elastomer composition from which a molded article having excellent rubber elasticity, a small viscosity / swell ratio (a small viscosity and a large swell), and excellent appearance can be obtained. [Solution] A thermoplastic elastomer composition comprising: an ethylene-(α-olefin)-(non-conjugated polyene) copolymer (A) which has a structural unit derived from ethylene [A1], a structural unit derived from an α-olefin [A2] having 4-20 carbon atoms, and a structural unit derived from a non-conjugated polyene [A3] and satisfies the requirements (1) and (2) mentioned below; and a crystalline olefin-based polymer (B).　Requirement (1): The molar ratio ([A1] / [A2]) of the structural unit derived from ethylene [A1] to the structural unit derived from the α-olefin [A2] having 4-20 carbon atoms is 40 / 60 to 90 / 10.　Requirement (2): The intrinsic viscosity [η] as measured in decalin at 135°C is 4.0-7.0 dl / g.

One aspect of the present invention relates to a sliding composition film or a method for producing a sliding composition, the sliding composition including an ethylene / α-olefin / nonconjugated polyene copolymer (A); a propylene-based random copolymer (B1) and a propylene homopolymer (B2), having a melt flow rate of 0.1 to 4.0 g / 10 min; high-density polyethylene (C1) having a density of 940 to 970 kg / m3 and a MFR of 0.1 g / 10 min or less; ultra-high molecular weight polyethylene (C2) having an intrinsic viscosity [η] of 10 to 40 dl / g (in decalin at 135° C.), an average particle size D50 of 22 to 50μm, and a density of less than 940 kg / m3; and a silicone compound (D) having a kinematic viscosity of 3,000 to 1,000,000 cSt (at 25° C.) in each predetermined content, in which the ethylene / α-olefin / nonconjugated polyene copolymer (A) is at least partially cross-linked with a phenolic resin-based cross-linking agent.

The invention relates to the field of clean energy additives, in particular to a high-stability composite additive of M100 green methanol fuel for vehicles and ships as well as a preparation method and application of the high-stability composite additive. Xylene; isoparaffin having a carbon number of 12 to 16; triethanolamine oleate; dimer acid glycol ester; benzotriazole; isooctyl nitrate; dimethyl carbonate; nano cerium dioxide; a terminated polyether amine; 2, 6-butylated hydroxytoluene is used as a raw material; 2, 2, 2-octylbutyldiphenylamine; triethyl hydroxylamine; propylene glycol monomethyl ether; isobutanol; an ether improver; polyethylene glycol dimethyl ether; sorbitan monostearate is added; an alkylate oil; the composite additive is green, high in calorific value and good in stability, can meet-25 DEG C cold start for vehicles, and can guarantee 60 DEG C high-temperature stability for ships.

The invention provides a PMP hollow fiber membrane with an antithrombotic function and a preparation method of the PMP hollow fiber membrane. According to the method, a decahydronaphthalene / xylene low-temperature solvent system is constructed, PMP is uniformly dissolved under the condition that the temperature does not exceed 90 DEG C, and a thermal protective agent is adopted, so that the biological activity of hirudin in the processing process is effectively maintained; furthermore, oxidized chitosan is used as a controlled release carrier, and high load and slow release regulation of hirudin are realized through directional covalent coupling grafting of the zwitterionic polymer; finally, the physical barrier of the zwitterionic polymer and the direct anticoagulation effect of the hirudin are combined to construct a synergistic antithrombotic mechanism. On the premise of not depending on heparin, the obtained hollow fiber membrane has the comprehensive advantages that the blood coagulation time is remarkably prolonged, hirudin is released stably and durably, and HIT risks are avoided, is suitable for clinical scenes such as blood purification and in-vitro oxygenation, and has important clinical application value.

The present invention relates to a process for preparing a compound of formula (I), a stereoisomer, a salt, a hydrate or a solvate thereof, (II) comprising the sulfinulation step of a compound of formula (IV) to produce a compound of Formula (II); (IV) wherein: R1 and R2 are as defined in the claims, wherein said sulfinilation step is carried out in the presence of a solvent selected from the group comprising benzene, toluene, ethylbenzene, xylene, chlorobenzene, bromobenzene, fluorobenzene, anisole, nitrobenzene, tetralin, dichlorobenzene, trimethylbenzene, ethyl acetate, propyl acetate, butyl acetate, propanol, butanol, 2-methyltetrahydrofuran, diethyl ether, methyl tert-butyl ether, cyclopentyl methyl ether, dichloromethane, tetrachloromethane, pentane, hexane, heptane, cyclohexane, decalin and mixtures thereof.

This invention provides a novel compound that can effectively prevent the proliferation of drug-resistant hepatitis B viruses. [Solution] A hydrophobic tag and morphothiazine, which is an allosteric modulator of the hepatitis B virus core protein, are linked by a linker. The ring-type carbocyclic is any of the following: adamantane ring, norbornene ring, norbornane ring, perhydroindene ring, decalin ring, perhydrofluorene ring, perhydroanthracene ring, perhydrophenanthrene ring, tricyclodecane ring, tricycloundecane ring, tetracyclododecane ring, perhydroacenaphthene ring, or perhydrophenalene ring. The novel compound according to the present invention can effectively suppress the proliferation of drug-resistant HBV.

This invention provides polyethylene resin compositions that can be used to manufacture films with higher elastic modulus and tensile strength. [Solution] A re-stretched film (Y) is formed from a polyethylene resin composition (X) comprising 5 to 40 parts by mass of polyethylene (A) satisfying requirement (a-1) and 95 to 60 parts by mass of polyethylene (B) satisfying requirements (b-1) and (b-2) (the total amount of polyethylene (A) and polyethylene (B) being 100 parts by mass), wherein the intrinsic viscosity [η] measured in decalin solvent at 135°C is in the range of 1.0 to 15 dl / g: (a-1) The intrinsic viscosity [η] measured in decalin solvent at 135°C is 5 to 50 dl / g; (b-1) The intrinsic viscosity [η] measured in decalin solvent at 135°C is 0.1 dl / g or more and less than 5 dl / g; (b-2) The density is 950 to 985 kg / m³ 3 That is the case.

The present application relates to a kind of method for synthesizing nucleophilic substitution aromatic carbon ten compounds by isoprene.The specific is, with isoprene, nitrogen-containing aromatic heterocycle as raw material, under the condition of carbene nickel and iodine tandem catalysis, realize the construction of nucleophilic substitution aromatic carbon ten compounds.The present application has the following advantages, raw material isoprene and nitrogen-containing aromatic heterocycle are commercially available and cheap, wide substrate range, good selectivity and yield.

The present invention relates to a 1-butene-ethylene copolymer (A) satisfying the following requirements (Al) to (A5). (Al) The content of structural unit (i) derived from 1-butene is in the range of 70 to 99.9 mol%, and the content of structural unit (ii) derived from ethylene is in the range of 0.1 to 30 mol% [wherein the total of structural unit (i) and structural unit (ii) is 100 mol%]. (A2) The crystallization rate is 0.1 to 10.0 min-1. (A3) The intrinsic viscosity [η] in decalin solvent at 135°C is in the range of 0.7 to 2.0 dl / g. (A4) The melt flow rate (MFR) measured in accordance with ASTM D1238 under the conditions of 190°C, 2.16 kg load is in the range of 1 to 100 g / 10 minutes. (A5) In the heat measurement using a differential scanning calorimeter (DSC), no melting peak is observed at the second temperature rise. 13 (A3) The intrinsic viscosity [η] in decalin solvent at 135°C is in the range of 0.7 to 2.0 dl / g. (A4) The melt flow rate (MFR) measured in accordance with ASTM D1238 under the conditions of 190°C, 2.16 kg load is in the range of 1 to 100 g / 10 minutes. (A5) In the heat measurement using a differential scanning calorimeter (DSC), no melting peak is observed at the second temperature rise.

The application discloses a Ce-doped zeolite-supported noble metal catalyst and a preparation method and application thereof. The Ce-doped zeolite-supported noble metal catalyst comprises a carrier, an active component and an auxiliary component. The active component is a palladium species, the auxiliary component is a Ce species, and the carrier is a zeolite. The palladium species accounts for 0.5-2 wt.% of the total mass of the Ce-doped zeolite-supported noble metal catalyst. The Ce species accounts for 0.1-5 wt.% of the total mass of the Ce-doped zeolite-supported noble metal catalyst. The Ce-doped zeolite-supported noble metal catalyst is used for catalytic hydrogenation saturation reaction of naphthalene, and the particle size of palladium in the zeolite-supported noble metal catalyst and the acidity of the carrier surface are regulated by introducing the second metal Ce. The Ce-doped zeolite-supported noble metal catalyst has high catalytic activity, high selectivity of decalin and high stability.