32 results about "Decalin" patented technology

The invention discloses a weather-resistant anti-aging polypropylene material and a preparation method thereof. The weather-resistant and anti-aging polypropylene material is prepared from polypropylene resin, vinyl amino compound grafted polypropylene, modified filler, an ultraviolet light absorber, a hindered amine light stabilizer, an antioxidant and an acid remover, the vinyl amino compound grafted polypropylene is prepared by carrying out free radical copolymerization reaction on polypropylene and a vinyl amino compound in a reaction solvent; the reaction solvent comprises a main solvent and a cosolvent in a mass ratio of 100: (0.5-1.2); the main solvent is selected from xylene or decahydronaphthalene, and the cosolvent is selected from N, N-dimethylformamide or methyl ethyl ketone. The invention aims to improve the compatibility of the weather-resistant auxiliary agent and polypropylene resin, solve the degradation effect of a traditional maleic anhydride grafted polyolefin compatilizer on a polypropylene matrix, and improve the weather resistance and aging resistance of a polypropylene material.

The present invention belongs to the technical field of aviation fuel preparation, and specifically relates to a method for synthesizing thermally stable aviation kerosene from 2,5 - hexanedione. The method comprises the following steps: 1) Using 2,5 - hexanedione as a raw material and an alkali solution as a catalyst, an unsaturated ketone compound with twelve carbon atoms is obtained through an alkali - catalyzed aldol condensation reaction; 2) The unsaturated ketone compound obtained in step 1) undergoes a hydrodeoxygenation reaction under the action of a ternary mixed metal oxide catalyst to obtain a saturated cycloalkane liquid fuel with twelve carbon atoms containing alkyl decalin. The method of the present invention simplifies the current route for preparing alkyl decalin from biomass, and the intermediate products and the final product do not need to undergo a purification / distillation process; significantly reduces the production cost, the raw materials are cheap and easily available, the reaction conditions are mild, and it is suitable for large - scale industrial production.

The utility model provides an industrial naphthalene desulfurization device which comprises a lifting mixing structure, the lifting mixing structure comprises a lifting frame, a matching hole is formed in the middle of the lifting frame, connecting holes are formed in the two sides of the interior of the lifting frame, a mounting groove is formed in the outer wall of the lifting frame, and a rotating frame is rotationally connected to the inner wall of the mounting groove; and a rotating frame is arranged on the outer wall of the rotating gear ring. The decahydronaphthalene storage device is reasonable in design, decahydronaphthalene which is subsequently added can be sequentially distributed in the storage shell through the lifting mixing structure which can be lifted, meanwhile, the peripheral rotating gear ring and the rotating frame can be rotated in the lifting process of the lifting frame, and the decahydronaphthalene storage device can be used for storing decahydronaphthalene. And a rotating gear ring and a rotating frame drive a rotating shaft and a stirring rod to rotate to uniformly stir decahydronaphthalene and industrial naphthalene in the storage shell, so that subsequent hydrogen can quickly store industrial naphthalene dissolved in the shell for desulfurization after entering the mixing shell.

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.

An object of the present invention is to obtain an ethylene / α-olefin / non-conjugated polyene copolymer that is applicable to LIM molding or a wide variety of other molding methods and is suitable for obtaining a molded body excellent in mechanical strength.The present invention relates to an ethylene / α-olefin / 5-vinyl-2-norbornene copolymer satisfying the following requirements (i) to (vi): (i) a weight average molecular weight is in a range of 1,000 to 50,000; (ii) a molecular weight distribution (Mw / Mn, Mw: weight average molecular weight, Mn: number average molecular weight) measured by gel permeation chromatography (GPC) is 2.7 or less; (iii) an intensity ratio Tαβ / Tαα in the 13C-NMR spectrum is 0.0 to 0.1; (iv) a content of a constitutional unit derived from 5-vinyl-2-norbornene is in a range of 0.1 to 20.0% by mass; (v) the constitutional unit derived from 5-vinyl-2-norbornene contains an endo form structure and an exo form structure, and a ratio of endo form structure / exo form structure is 2.5 or less; and (vi) an intrinsic viscosity [η] measured in decahydronaphthalene at 135° C. is in a range of 0.01 to 0.8 dl / g.

The invention aims to provide a nitrogen atom-doped intermetallic compound catalyst as well as a preparation method and application thereof, the molecular formula of the nitrogen atom-doped intermetallic compound catalyst is NixMyNn / Al2O3, and NixMyNn is an active component doped with nitrogen atoms. The nitrogen atom doped intermetallic compound catalyst is in the shape of an irregular block. The catalyst shows excellent naphthalene hydrogenation catalytic performance: under the conditions that the temperature is 230 DEG C, the pressure is 4 MPa, the hydrogen-oil ratio is 300 and the liquid phase volume space velocity is 94.5 h <-1 >, the naphthalene conversion rate in a 24-hour stability test can reach 100%, and the decahydronaphthalene selectivity reaches up to 97.7% or above. The invention also provides a preparation method and application of the nitrogen atom doped intermetallic compound catalyst.

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

One embodiment of the present invention relates to an electrode binder, an electrode, a lithium ion secondary battery, or a method for producing the electrode, and the electrode binder includes an ultrahigh molecular weight olefinic polymer fine particle (A) that satisfies the following requirements (i) to (iii):(i) the intrinsic viscosity [η] measured in a decalin solvent at 135° C. is in a range of 5 to 50 dl / g;(ii) the average particle diameter d50 in a mass-based particle size distribution by a Coulter counter method is in a range of 1 to 50 μm; and(iii) 50% by mass or more of the particles passes through a mesh sieve with an opening of 45 μm.

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.

To provide a fiber that contains ultra-high molecular weight polyethylene and polyethylene having a lower intrinsic viscosity [η] than that of the ultra-high molecular weight polyethylene, and has excellent tensile strength and stretching property, and also a production method in which fibers are produced without using a solvent.SOLUTION: A fiber (Y) comprises 5 to 40 pts.mass of an ultra-high molecular weight polyethylene (A) satisfying a requirement (a-1) and 95 to 60 pts.mass of a low-molecular weight or high-molecular weight polyethylene (B) satisfying requirements (b-1) and (b-2) and has an intrinsic viscosity [η] measured in decalin solvent at 135°C in a range of 1.5 to 15 dL / g, and at least a portion thereof forme a homogeneous phase. Requirement (a-1): an intrinsic viscosity [η] measured in decalin at 135°C is 8 to 50 dL / g. Requirement (b-1): an intrinsic viscosity [η] measured in decalin at 135°C is 0.1 to 5 dL / g. Requirement (b-2): a density is 950 to 985 kg / m3.SELECTED DRAWING: None

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 belongs to the technical field of detection, and particularly relates to a method for measuring the content of plant fibers in a plant fiber reinforced polyolefin composite pipe. The test method comprises the following steps: (1) sample preparation: selecting a uniform and defect-free area in the plant fiber reinforced polyolefin composite pipe; crushing the sample into powder, and drying to constant weight; (2) extracting by using a solvent (benzene, dimethylbenzene, methylbenzene, amyl acetate, trichloroethylene, decalin, paraffin oil and mineral oil) to remove the polyolefin matrix; (3) separating the bamboo fiber by using a density method: mixing the mixture obtained in the step (2) with carbon tetrachloride, chloroform and the like, uniformly stirring, and standing for layering; separating an upper-layer suspension, filtering by a funnel, and drying to constant weight to obtain plant fiber mass; (4) blank test correction: synchronously performing a blank test without a sample, and measuring the mass of filter paper and solvent residues; and calculating the plant fiber content according to a formula.

A composite adsorbent for separating ethylbenzene from C8 arene by an adsorption distillation contains 1-50 mass % of a xylene adsorbent and 50-99 mass % of a carrier liquid. The carrier liquid is selected from one or two of alkane, aryl-substituted alkane, decalin and alkyl-substituted decalin. The alkane is C10-C26 alkane, and the aryl-substituted alkane is C13-C16 aryl-substituted alkane. The composite adsorbent can increase the volatility of ethylbenzene relative to other C8 arenes and thus can separate a high-purity ethylbenzene from C8 arene by the adsorption distillation.

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 heterophasic polyolefin composition and articles produced therefrom with improved mechanical and optical properties, particularly low stress whitening. The present invention further relates to a process for the preparation of such a heterophasic polyolefin composition, articles made therefrom, particularly films, and uses of the heterophasic polyolefin composition. The heterophasic propylene copolymer composition comprises a heterophasic propylene copolymer (HECO) comprising a matrix (M) being a propylene homopolymer (H-PP) and an elastomeric propylene copolymer (EPC) dispersed in said matrix (M), wherein the heterophasic propylene copolymer (HECO) has (a) a melt flow rate MFf¾ (2.16 kg, 230° C.) measured according to ISO 1133 in the range of 5.0 to 25.0 g / 10 min, (b) a soluble fraction content (SF) determined by TREF fractionation on CRYSTEX QC, Polymer Char (Valencia, Spain) in the range of 10.0 to 25.0 wt. %, (c) an ethylene content of the soluble fraction content (SF) in the range of from 18 wt. % to less than 39 wt. %, (d) an intrinsic viscosity (IV) determined according to DIN ISO 1628 / 1 (in decalin at 135° C.) of the soluble fraction (SF) in the range of from 1.5 to 2.5 dl / g, (e) a crystalline fraction content (CF) determined by TREF fractionation on CRYSTEX QC, Polymer Char (Valencia, Spain) in the range of 75 to 90 wt. %, (f) an ethylene content of the crystalline fraction content (CF) of from 0.1 wt. % to 5.0 wt. %, and the heterophasic propylene copolymer composition has a total ethylene content in the range of from 7 to 30 wt. %, determined by quantitative NMR spectroscopy.

The present invention provides a method for preparing a mesoporous zirconia thin film, comprising: (1) preparing a mixed solution of a benign solvent and a pore-expanding agent; the benign solvent is one or a mixture of tetrahydrofuran and methanol; the pore-expanding agent is selected from one or several of cyclohexane, n-hexane, decalin, and tetradecene; (2) dissolving a catalytic amount of an organic alkanolamine catalyst and a nonionic surfactant into the above-mentioned mixed solution, and stirring until a clear solution is obtained; (3) dissolving a zirconium source into the above-mentioned clear solution, and stirring for pre-hydrolysis at room temperature; (4) dropping the solution pre-hydrolyzed in step (3) onto the surface of a flat substrate, and after treatment, obtaining a mesoporous zirconia thin film. The present invention adopts a simple mixing system, which is completely miscible among the systems, without considering the appearance of the microemulsion structure of the system, nor the participation of other auxiliary agents or dispersants. Therefore, the operation is simple and the repetition rate is high, and it can be applied to large-scale industrial production.

The present disclosure provides a catalyst reaction mixture comprising a ligand having a backbone with at least one phosphorus atom and at least one nitrogen atom, a chromium compound, and a solvent mixture comprising decalin and at least one additional solvent, wherein the solvent mixture comprises decalin in an amount of less than 20 wt.%, and optionally, perhydroindane in an amount of 50 wt.% or less, based on the total weight of the solvent mixture. Also provided are methods of forming linear alpha olefins by ethylene oligomerization, the methods comprising: contacting ethylene gas with a reaction mixture in a reactor, the reaction mixture comprising a catalyst reaction mixture of the present disclosure; and withdrawing a product stream from the reactor, the product stream comprising at least one linear alpha-olefin, such as 1-butene, 1-hexene, or 1-octene.

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.

A heterophasic polypropylene copolymer having an MFR2 of 0.05 to 20 g / 10 min (ISO 1133 at 230° C. with a loading of 2.16 kg) and a melting point (Tm) of 156 to 164° C. (measured by DSC according to ISO 11357) wherein the heterophasic polypropylene copolymer comprises at least the following components: (A) 55.0 to 95.0 wt % of a crystalline fraction (CF) having a comonomer content of 0 to 3.0 wt %; and (B) 5.0 to 45.0 wt % of a soluble fraction (SF) having a comonomer content of 12 to 45 wt %; wherein the intrinsic viscosity (IV) (in decalin at 135° C.) of the soluble fraction (SF) is 2.5 to 11 dl / g, and wherein the amount of crystalline fraction (CF) and the amount of soluble fraction (SF) are determined in 1,2,4-trichlorobenzene at 40° C.

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.