79 results about "Cycloalternan" patented technology

A process for manufacturing a lubricating base oil, comprising dewaxing a substantially paraffinic wax feed by hydroisomerization dewaxing using a shape selective intermediate pore size molecular sieve under hydroisomerization conditions including a hydrogen to feed ratio from about 712.4 to about 3562 liter H₂/liter oil, whereby a lubricating base oil is produced having a)a total weight percent of molecules with cycloparaffinic functionality greater than 10, and b) a ratio of weight percent molecules with monocycloparaffinic functionality to weight percent molecules with multicycloparaffinic functionality greater than 30. Also a method for producing a base oil having a high ratio of weight percent molecules with monocycloparaffinic functionality to weight percent molecules with multicycloparaffinic functionality by hydroisomerization dewaxing a selected Fischer-Tropsch wax under hydroisomerization conditions including a hydrogen to feed ratio from about 712.4 to about 3562 liter H₂/liter oil. Also a lubricating base oil manufacturing plant.

The invention relates to methods for enriching monomer content in a cycloalkane oxidation process mixed organic waste stream. In particular, the methods involve combining a biocatalyst with a mixed organic waste stream from a cycloalkane oxidation process, and enzymatically converting dimeric and/or oligomeric components of said waste stream into monomeric components. The methods may enrich the content of diacids, adipic acid, and/or other α,ω-difunctional C6 alkanes in the mixed organic waste stream. Additionally, the treated mixed organic waste streams may have improved burning efficiency.

A series of steps of (A) a step for bringing a cycloalkane into contact with molecular oxygen (oxidizing reactor 2) in the presence of an oxidizing catalyst having an imide unit of the following formula (I):wherein X represents oxygen atom or hydroxyl group;(B) a step for separating the catalyst, and by-produced acid component or a derivative thereof from the reaction mixture (filter 3, extracting column 4, hydrolyzing unit 7, saponifying unit 8); and(C) steps for separating the cycloalkane, a cycloalkanol, and a cycloalkanone from the reaction mixture individually (distilling columns 5, 6, 9, and 10) makes it possible to produce cycloalkanones efficiently. A first component (lower-boiling point component) containing the cycloalkane and a second component (higher-boiling point component) containing the cycloalkanone and cycloalkanol may be separated from the reaction mixture, and the cycloalkanone and the cycloalkanol may be separated from the higher-boiling point component. Such production process is capable of providing cycloalkanones with high efficiency.

The invention relates to a production method of rubber filling oil excellent in stability. The production method comprises the following steps: sequentially charging decompression distilled oil of naphthenic crude oil and cycloalkane immediate crude oil, and light deasphalted oil into a hydro-treatment reaction area, a hydro-dewaxing reaction area and a hydro-refining reaction area; charging a hydro-refining product into an electromagnetic wave treatment area; removing a part of saturated polycyclic aromatic hydrocarbon under the irradiation of high-temperature electromagnetic wave; and charging a product which is obtained in the electromagnetic wave treatment area into a degumming unit to obtain a degummed fraction which is just the rubber filling oil product. The method disclosed by the invention has the advantages of improving the stability of the rubber filling oil without using noble metals for hydro-refining or adding additives, greatly simplifying the technological production procedures of the rubber filling oil and greatly reducing the device construction investment and the operation cost.

The invention provides a chiral ferrocene diphosphine ligand and a preparation method thereof, and discloses a compound as shown in a general structural formula (I), wherein R is selected from C1-C25 alkyl, aryl or substituted aryl, hetero-aryl and cycloalkyl; R' is selected from C1-C25 alkyl, aryl or substituted aryl, hetero-aryl and cycloalkyl. In the chiral ferrocene diphosphine ligand disclosed by the invention, various substituent groups can be conveniently introduced above phosphorus atoms, and electrons and three-dimensional properties of the phosphine ligand are easy to be changed, so that the application range of the phosphine ligand in different catalytic reactions can be farthest widened.

A lubricant composition comprises a cycloaliphatic amine alkoxylate and a base oil selected from (a) a polyalkylene glycol; (b) a polyalphaolefin; (c) a naphthenic compound; and (d) combinations thereof; provided that the cycloaliphatic amine alkoxylate and the base oil are miscible. The lubricant may exhibit a viscosity change at 40° C. of less than 5 percent (%) after 13 days at 120° C. in dry air, indicating significant thermoxidative stability with minimal or no aromatic content, thereby enabling use of Groups II and III base oils, in particular, without reduced toxicity and/or quality concerns as compared with Group I base oil lubricants.

The object of the present invention is to produce cycloalkanol and/or cycloalkanone with good selectivity by oxidizing cycloalkane with molecular oxygen. The method of the present invention comprises the step of oxidizing cycloalkane with molecular oxygen in the presence of cobalt salt of carboxylic acid and cobalt complex with porphyrin as a ligand; such cobalt complex typically represented by the formula (1):

(wherein, each of X¹ to X⁸ independently represents a hydrogen atom, a halogen atom, a nitro group, a cyano group, a hydrocarbon group, a halogenated hydrocarbon group or a sulfonyl group, each of R¹ to R⁴ independently represents a hydrogen atom, a nitro group, a cyano group, a hydrocarbon group or a halogenated hydrocarbon group.)

The invention relates to a method for catalytic oxidation of cycloalkane by confinement porphyrin Co (II). The method comprises the following steps: dispersing confinement cobalt porphyrin (II) in cycloalkane, sealing the reaction system, heating to 100-130 DEG C while stirring, introducing oxygen to 0.2-3.0 MPa, keeping the set temperature and oxygen pressure, stirring to react for 3.0-24.0 h, and carrying out post-treatment on a reaction solution to obtain products naphthenic alcohol and naphthenic ketone. The method achieves high selectivity of naphthenic alcohol and naphthenic ketone, andeffectively inhibits the generation of aliphatic diacid. The aliphatic diacid is low in selectivity, so that the continuity of the cycloalkane oxidation process and the separation of the products arefacilitated; the method has the potential of solving the problem that naphthenic alcohol and naphthenic ketone are easily and deeply oxidized to generate aliphatic diacid in the industrial cycloalkanecatalytic oxidation process; and the method is a novel efficient and feasible method for selective catalytic oxidation of cycloalkane.

The present invention relates to a process for producing a 2-alkyl-2-cycloalken-1-one represented by the following general formula (2), including the step of reacting a 2-alkylidene cycloalkanone in the presence of a palladium and/or platinum catalyst which is treated in the following steps (a) and (b); and a method for activating the palladium and/or platinum catalyst including the following steps (a) and (b):

• • Step (a): activating the palladium and/or platinum catalyst in an atmosphere containing a hydrogen gas; and
  • Step (b): replacing the hydrogen gas being present as the atmosphere for the catalyst in the step (a), with an inert gas to remove the hydrogen gas out of the reaction system,

wherein m is 0 to 3; n is 1 or 2; R¹ and R² are each independently a hydrogen atom or an alkyl group having 1 to 8 carbon atoms; and R³ is an alkyl group having 1 to 5 carbon atoms. In accordance with the present invention, the 2-alkyl-2-cycloalken-1-one can be produced with a high purity and a high productivity.

The present invention discloses a TRPV3 small molecule allosteric inhibitor and a preparation method thereof. The small molecule inhibitor comprises compounds represented by a general formula (I) anda general formula (II) shown in the specification or pharmaceutically acceptable salts thereof, wherein X is selected from N or C, Y is selected from (CH2) or (CO); R2 is selected from hydrogen and halogen; R4 is selected from C1-C8 alkyl groups, C3-C8 cycloalkyl groups, a naphthalene ring, an adamantyl group, morpholine, 4-(methylsulfonyl) piperazine and 4-(trifluoromethyl)pyridine-2-amine; and R1 and R3 are respectively and independently selected from hydrogen, deuterium, halogen, hydroxyl, sulfydryl, cyano, nitro, C1-C8 alkyl, halogenated C1-C8 alkyl, C1-C8 alkoxy, C3-C8 naphthenic bases, C3-C8 cycloalkenyl, C2-C8 alkenyl, C2-C8 alkynyl, C6-C10 aryl, C3-C10 heteroaryl and C4-C8 heterocyclic radical.

The invention belongs to the technical field of panel display, and particularly relates to a preparation method of a quantum dot material. The preparation method provided by the invention comprises the following steps of: providing a quantum dot cationic precursor solution and a quantum dot anionic precursor solution; in an inert gas atmosphere, mixing the quantum dot cation precursor solution andthe quantum dot anion precursor solution at a first temperature to prepare a mixed solution containing quantum dot crystal nucleuses; and adjusting the temperature of the mixed solution containing the quantum dot crystal nucleus to a second temperature, and carrying out quantum dot growth. In the step of mixing the quantum dot cationic precursor solution and the quantum dot anionic precursor solution at the first temperature, a mixture of primary amine and secondary phosphine is added to be mixed with the quantum dot cationic precursor solution and/or the quantum dot anionic precursor solution, wherein the secondary phosphine has a general formula RR'PH2, R is selected from alkyl or cycloalkyl, and R' is selected from alkyl or cycloalkyl. According to the method, a mixture of primary amine and secondary phosphine is added, so that high-yield synthesis of the quantum dot material is realized.

The invention discloses an alpha-amino cyclo nitrile compound preparation method. Cycloalkanone, organic amine salt or inorganic amine salt, and alkali metal cyanide or acetone cyanohydrin undergo a reaction with stirring in water at the temperature of 20 DEG C to 30 DEG C in the absence of a catalyst to prepare the alpha-amino cyclo nitrile compound. According to the method, the cycloalkanone, the organic amine salt or the inorganic amine salt, and the alkali metal cyanide or the acetone cyanohydrin are used as reaction raw materials which are cheap and easy to obtain; the water is used as a reaction solvent which is environment-friendly and has low cost; no catalyst is used, which has low cost and has no subsequent catalyst recovery trouble; the alpha-amino cyclo nitrile compound is prepared by a one-pot method, and the preparation route is short and the operation is simple; a reaction liquid only needs to undergo simple steps such as organic solvent extroperation, washing, dewatering and drying, organic solvent recovery and the like to obtain the high qualified product, and complicated processing steps such as column chromatography purification is not necessary; the prepared product has high purity of more than 91% and high yield of more than 90%; and the method can be operated continuously, has great production capacity, short production cycle and short production cost, and can be applied to industrialized mass production.

The invention relates to the field of pharmaceutics and more specifically to novel cycloalkylamidoacid compositions useful in the preparation of cycloalkyaminoacids and oxazolidinediones, and processes for making cycloamidoacids.

X and R are defined herein

The invention provides a preparation method of benzoylsulfamoyl benzamide. The method comprises the following steps: reacting a sulfamoyl benzoic acid compound as shown in formula (I) with pivaloyl chloride so as to generate an anhydride compound as shown in formula (II), and reacting the anhydride compound with amine. In the formulas, R1 is hydrogen, halogen, a C1-10 alkyl group, a C1-10 alkoxy group, a C3-8 cycloalkyl group, a C3-8 cycloalkoxy group, a halogenated C1-10 alkyl group, a halogenated C1-10 alkoxy group, a halogenated C3-8 cycloalkyl group or a halogenated C3-8 cycloalkoxy group,and R2 and R3 each independently represent hydrogen, a C1-10 alkyl group, or a C3-8 cycloalkyl group. The invention also relates to compounds as shown in the formula (II) and application of the compounds as intermediates for the preparation of compounds as shown in formula (III).