- Preparation method of alkyl diglycol (by machine translation)
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The invention relates to a preparation method of alkyl diglycol with NRE (narrow distribution ethoxylate Narrow Range Ethoxylate) effect while increasing the reaction speed in the presence of a novel aluminum-based catalyst containing alkali metal or alkaline earth metal. (by machine translation)
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Paragraph 0031; 0032; 0040-0049
(2020/06/09)
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- OPEN-FLASK HYDROBORATION AND THE USE THEREOF
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The present disclosure generally relates to a process for hydroboration of an alkene or alkyne using ammonia borane (AB). In particular, the present invention relates to hydroboration of an alkene or alkyne in the presence of air or moisture, and a clean process for facile preparation of an alcohol by oxidizing the organoborane so formed with hydrogen peroxide. The products, including aminodialkylboranes, ammonia trialkylborane complexes, as well as various alcohols so prepared, are within the scope of this disclosure.
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Paragraph 0046; 0058; 0059
(2018/03/25)
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- Green synthesis method for preparing alcohol ether by using olefin in one step
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The invention belongs to the field of organic chemical industry, and provides a green synthesis method for preparing alcohol ether by using olefin in one step. The green synthesis method is characterized in that a jet type reactor is used for continuously jetting alcohol, hydrogen peroxide and a cyclization-alcoholysis catalyst into a pressured reaction kettle filled with olefin gas, so that continuous epoxidation and alcoholysis reaction is carried out; after being separated by a ceramic membrane, reaction liquid enters to an olefin and alcohol removal tower; after olefin and alcohol are removed, the reaction liquid directly and continuously enters to a rectifying tower, and the alcohol ether product is obtained by rectifying; the effective utilization rate of the hydrogen peroxide is more than or equal to 98%, the alcohol ether selectively is greater than or equal to 99%, and the product purity is higher than or equal to 99.5%. The green synthesis method can be used for preparing the alcohol ether in one step and is suitable for industrial large-scale production.
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Paragraph 0018
(2018/01/12)
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- Preparation method of ethylene glycol monobutyl ether
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The invention relates to the field of chemistry and chemical engineering and particularly discloses a preparation method of ethylene glycol monobutyl ether. The preparation method of the ethylene glycol monobutyl ether is characterized in that ethylene oxide and n-butyl alcohol are prepared into a raw material mixed solution, and cold storage is performed for usage; high-silicon-content alloy or an all-silicon molecular sieve and porous silicon dioxide are put in a muffle furnace to perform high-temperature roasting, and a roasting catalyst is put in a dryer for usage after being numbered; the raw material solution and the roasting catalyst are put in a reaction kettle for reaction, and a product is obtained. The high-silicon-content alloy or the all-silicon molecular sieve and the porous silicon dioxide used by the method is low in procurement cost, the treating process is simple, a production process is greatly simplified, the production cost is reduced, the catalyst or ethylene glycol butyl ether is high in selectivity, and the preparation method has very high stability.
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Paragraph 0019; 0021
(2017/07/18)
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- Method for preparing butoxy methoxy methane
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The invention provides a method for preparing butoxy methoxy methane and relates to a method for preparing methane. The method includes a synthesis path of ethylene glycol monobutyl ether, the path includes three steps that 1, methylal and butyl alcohol synthesize the butoxy methoxy methane; 2, directional carbonylation of the butoxy methoxy methane is conducted, and butoxy methyl acetate is generated; 3, hydrogenation is conducted on the butoxy methyl acetate to generate the ethylene glycol monobutyl ether and methane; dimethoxymethane and n-butyl alcohol serve as raw materials, under the temperature and pressure, resin serves as a catalyst, the butoxy methoxy methane is prepared. The brand new synthesis path of the ethylene glycol monobutyl ether and the preparation method of the butoxy methoxy methane are developed; the required raw materials are cheap and easy to obtain, the whole procedure is simple in operation, a product is singular and high in selectivity, good application prospect is achieved, and the butoxy methoxy methane is suitable for industrial production.
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Paragraph 0018; 0019
(2017/03/28)
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- A non-dissociative open-flask hydroboration with ammonia borane: Ready synthesis of ammonia-trialkylboranes and aminodialkylboranes
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Under open-flask conditions, ammonia borane hydroborates olefins in refluxing tetrahydrofuran. Unlike conventional hydroboration, the Lewis base (ammonia) is not dissociated from the boron center. Terminal alkenes selectively provide ammonia-trialkylborane complexes. On the other hand, internal alkenes afford aminodialkylboranes via a metal-free hydroboration-dehydrogenation sequence. Alkaline hydrogen peroxide oxidation of the products provides the corresponding alcohols in high yields.
- Ramachandran, P. Veeraraghavan,Drolet, Michael P.,Kulkarni, Ameya S.
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supporting information
p. 11897 - 11900
(2016/10/09)
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- PRODUCTION OF HYDROXY ETHER HYDROCARBONS BY VAPOR PHASE HYDROGENOLYSIS OF CYCLIC ACETALS AND KETALS
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A vapor phase hydrogenolysis reaction to convert cyclic acetal compounds and/or cyclic ketal compounds in the presence of hydrogen to their corresponding hydroxy ether hydrocarbon reaction products using a supported noble metal catalyst. The hydrogenolysis reaction can be carried out in the vapor phase and in the absence of a polyhydroxyl hydrocarbon co-solvent.
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Page/Page column 11
(2013/02/28)
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- CATALYSTS FOR THE PRODUCTION OF HYDROXY ETHER HYDROCARBONS BY VAPOR PHASE HYDROGENOLYSIS OF CYCLIC ACETALS AND KETALS
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Catalyst compositions of palladium supported on alumina or zirconium oxide supports having low or no silicon dioxide contents and having a specific surface area or modified with alkali, alkaline earth, or phosphine oxide compounds are selective in a vapor phase hydrogenolysis reaction to convert cyclic acetal compounds and/or cyclic ketal compounds in the presence of hydrogen to their corresponding hydroxy ether hydrocarbon reaction products.
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Page/Page column 18
(2013/02/28)
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- NICKEL MODIFIED CATALYST FOR THE PRODUCTION OF HYDROXY ETHER HYDROCARBONS BY VAPOR PHASE HYDROGENOLYSIS OF CYCLIC ACETALS AND KETALS
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Catalyst compositions of alumina supports containing palladium and nickel are selective in a vapor phase hydrogenolysis reaction to convert cyclic acetal compounds and/or cyclic ketal compounds in the presence of hydrogen to their corresponding hydroxy ether hydrocarbon reaction products.
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Page/Page column 8
(2013/02/28)
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- PRODUCTION OF HYDROXY ETHER HYDROCARBONS BY LIQUID PHASE HYDROGENOLYSIS OF CYCLIC ACETALS OR CYCLIC KETALS
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A liquid phase hydrogenolysis of acetal compounds such as cyclic acetals and cyclic ketals are fed to a reaction zone and reacted in the presence of a noble metal catalyst supported on a carbon or silica support to make hydroxy ether mono-hydrocarbons in high selectivity, without the necessity to use acidic co-catalysts such as phosphorus containing acids or stabilizers such as hydroquinone.
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Page/Page column 7
(2013/02/28)
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- POLYOL ETHERS AND PROCESS FOR MAKING THEM
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New polyol ether compounds and a process for their preparation. The process comprises reacting a polyol, a carbonyl compound, and hydrogen in the presence of hydrogenation catalyst, to provide the polyol ether. The molar ratio of polyol to carbonyl compound in the process is greater than 5:1.
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Paragraph 0066
(2011/05/14)
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- POLYOL ETHERS AND PROCESS FOR MAKING THEM
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New polyol ether compounds and a process for their preparation. The process comprises reacting a polyol, a carbonyl compound, and hydrogen in the presence of hydrogenation catalyst, to provide the polyol ether. The molar ratio of polyol to carbonyl compound in the process is greater than 5:1.
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Page/Page column 6-7
(2010/03/31)
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- HETEROCYCLIC AMINE CATALYST COMPOSITIONS FOR THE ALKOXYLATION OF ALCOHOLS TO GLYCOL ETHERS
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Glycol ethers are made by a process in which an alcohol, an alkylene oxide and a catalytic amount of an aromatic, heterocyclic amine catalyst are contacted under reactive conditions. Representative catalysis include substituted and unsubsiituted pyridines and imidazoles. The process uses known oxides and alcohols, and produces more mono- and di- adduct products than does a corresponding process using a caustic catalyst. Moreover, the process can be conducted at a lower reaction temperature than a corresponding process using a caustic catalyst without sacrificing oxide conversion rates yet producing fewer carfoony! impurities.
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Page/Page column 8-9, 11
(2009/12/05)
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- METHOD FOR PRODUCING MONOALKYLENE GLYCOL MONOETHER
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The invention relates to a method for producing monoalkylene glycol monoether of general formulas (Ia) and (Ib), wherein a group R is hydrogen, a methyl-, ethyl-, propyl- or butyl group and R1 is a phenyl or a linear or branched C1-C10 alkyl group consisting in reacting an alcohol R1OH (II) with an alkylene oxide (III) in the presence of a heterogeneous catalyst in a liquid phase which contains in the form of a catalytically active agent at least one composition of formula (IV): M1pAnm x zH2O, wherein M1is hydrogen and/or one or several cations of IA, IIA, IIIA groups, a IVA, IB, IIB, IIIB, IVB, VB, VIB, VIIB or VIIIB lanthanide groups, An is an anion of formula [M2qOn(OH)2(3-n)], wherein M2 is at least one cationic element from a group of pnicogens As, Sb and Bi, the index q is a value equal to 1, the index n is a fractional or an integer number equal to or greater than 0 and strictly less than 3, z is equal to 0 or an integer or fractional number strictly greater than 0 and equal or less than 10, the index p is a value normalised to 1 and the index m is a number ranging from 1.2 to 8 stoichiometrically obtainable from the electric charge of one or several cations M1 and from the electric charge of an An anion taking in to account the index p whose value is normalised to 1 at a temperature ranging from a room temperature to 350 °C, at a pressure ranging from atmospheric pressure to 80 bar and at a molar ratio alcohol II/alkylene oxide III ranging from 3:1 to 15:1.
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Page/Page column 24-25
(2010/02/14)
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- Method for producing a glycol ether
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A method for producing a glycol ether, which can maintain a high catalyst-activity and high productivity, can control reaction-selectivity and which comprises reacting an alkylene oxide with an alcohol in the presence of a catalyst, wherein the catalyst is an anion exchange resin which comprises, as the substrate, a polymer of a vinyl aromatic compound and which has a structure such that a quaternary ammonium group is bonded to the aromatic group via a linking group having a chain length of at least 3.
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- On the correlation between activity coefficients and association parameters for 1-butanol and 1-hexanol
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In a study of the phase equilibria of binary mixtures of 1-butanol and 1-hexanol with hexane, a correlation was revealed between the activity coefficients for 1-butanol and 1-hexanol measured in the temperature range 25-27°C. The parameters of their association were determined in a study of the kinetics of irreversible oxyethylation at 100-180°C both in the presence and absence of a solvent (dodecane). A conclusion was drawn on the correlation between the kinetics of this irreversible reaction and the thermodynamic properties of the reactive mixtures studied.
- Stul',Chesnokov
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p. 576 - 578
(2007/10/03)
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- Light-colored manganese carboxylates
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This invention relates to light-colored manganese carboxylates and to a process for preparing manganese carboxylates. The manganese carboxylate salts are derived from (a) at least one carboxylic acid containing at least about six carbon atoms and characterized by the Formula (I) STR1 wherein R1, R2 and R3 are each independently hydrogen or alkyl groups, and R4 is an aliphatic hydrocarbylene group or (b) a carboxylic acid mixture comprising at least one carboxylic acid containing at least about six carbon atoms wherein at least about 75% by weight of the carboxylic acids containing at least six carbon atoms in the mixture are characterized by Formula I. Hydrocarbon solutions of such manganese carboxylates are lighter in color and more color stable than hydrocarbon solutions of similar manganese carboxylates wherein the carbon atom alpha to the carboxyl group contains one or two substituents.
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- The Possibility of Determining the Activity Coefficients of n-Butanol from the Kinetics of its Hydroxyethylation
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It was found that in hydroxyethylation of n-butyl alcohol associates, or clusters, its molecules behave like kinetically independent particles.This is the basis for a proposed kinetic method for determining n-butyl alcohol activity coefficients; the dependence of the activity coefficient on the mole fraction of the solvent, the maximum values of the activity coefficients, and the heat of solution determined in this way are comparable to those in the literature.
- Stul', B. Ya.,Asriev, S. D.,Emel'yanov, V. I.,Chesnokov, B. B.
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p. 720 - 723
(2007/10/02)
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- Manufacturing process for a naphthotriazole stilbene fluorescent agent
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2-(stilbyl-4 )-(naphtho-1',2':4,5)-1,2,3-triazole-2 -sulfonic acid is obtained by diazotizing p-aminostilbene sulfonic acid, coupling the resulting diazonium salt with Tobias acid and then oxidizing the resulting monoazo sodium salt to close the ring and form the naphthotriazolyl moiety, and, more particularly, by performing the ring-closure oxidation step in a solution of the monoazo compound in a mixture of 2-butoxyethanol and water with pressurized air by contacting said solution in the presence of a copper salt catalyst at temperatures in the range 105°-160° C. and at pressures in the range 10-80 psig, for a time sufficient to effect ring-closure.
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- Polythiols and use as epoxy resin curing agents
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Polythiols prepared by the reaction of hydrogen sulfide or organic dithiols with polyglycidyl substituted amines have been found to be outstanding curing agents for epoxy resins. Epoxy resins cured with these polythiols are characterized by not only improved gel times, but also improved cure rates, better heat resistance and greater resistance to absorption of water. A useful polythiol is the reaction product of N,N,N',N'-tetraglycidyl-m-xylylenediamine with hydrogen sulfide.
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- Ruthenium-cobalt carbonyl catalysts for the dealkoxyhydroxymethylation of acetals to form glycol ethers
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The cobalt carbonyl catalyst R5 CCo3 (CO)9, desirably with Ru3 (CO)12, wherein R5 is hydrogen; alkyl, preferably C1-5 lower alkyl; cycloalkyl or substituted cycloalkyl; cycloalkenyl, such as cyclohexenyl or cyclooctenyl; C1-12 alkoxy, such as methoxy or propoxy; aryl or alkyl-, cycloalkyl-, alkoxy-, halo-, or cyano-substituted aryl; cyano; or a silyl carbyne moiety of the formula R36 Si, wherein R6 is alkyl or aryl, effectively catalyzes the dealkoxyhydroxymethylation of aldehyde acetals to form glycol monoethers. Methylal, for example, may be reacted with syngas; i.e., CO and H2, in the presence of this catalyst system to form the corresponding ethylene glycol monomethyl ether. The novel catalyst combination of R5 CCo3 (CO)9 and Ru3 (CO)12 is likewise claimed herein.
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- Ruthenium-cobalt carbonyl metal cluster catalysts for the dealkoxyhydroxymethylation of acetals to form glycol ethers
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The ruthenium-cobalt carbonyl metal cluster catalyst Co2 Ru(CO)11 effectively catalyzes the dealkoxyhydroxymethylation of aldehyde acetals to form glycol monoethers. Methylal, for example, may be reacted with syngas, i.e., CO and H2, in the presence of this ruthenium-cobalt cluster catalyst to form the monomethyl ether of ethylene glycol.
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- Cosmetic compositions which contain bis-(quaternary ammonium) derivatives with two lipophilic chains and certain said derivatives
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The invention relates to cosmetic compositions which are intended to be used for the treatment of keratin substances. These compositions contain at least one bis(quaternary ammonium) derivative with two lipophilic chains, corresponding to the formula STR1 in which R denotes a saturated or unsaturated, linear or branched aliphatic group having from 8 to 22 carbon atoms, or a mixture of such groups, or mixtures of lipophilic chains derived from natural products having from 8 to 30 carbon atoms, A denotes a group --(CH2)n --, in which n denotes and integer from 1 to 18, R' denotes hydrogen and m=1, it also being possible for A to form a heterocyclic group together with the nitrogen atoms to which it is bonded, in which case m=O, and X- denotes and anion derived from a mineral or organic acid.
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- Catalysts for alkoxylation reactions
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Catalysts producing a sharply peaked alkoxylation distribution during the alkoxylation of organic materials comprise mixtures of BF3 and metal alkyls or metal alkoxides, SiF4 and metal alkyls or metal alkoxides, or mixtures of these catalysts.
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- Methods of alkoxylation
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Catalysts comprising mixtures of HF and metal alkoxides and mixed metal alkoxides produce a sharply peaked alkoxylation distribution during the alkoxylation of organic materials.
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- Deamination Reactions, 41. Reactions of Aliphatic Diazonium Ions and Carbocations with Ethers
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Aliphatic diazonium ions and carbocations were generated by deacylation of appropriate nitrosoureas (1, 5, 9) in alcohol-ether mixtures or in 2-alkoxyethanols.Ethers were generally inferior to alcohols in capturing cationic intermediates.Formation of trialkyloxonium ions led to alkyl exchange or ring opening.The observed reactivity orders were n-butyl > isobutyl for the diazonium ions, allyl > sec-butyl > tert-butyl for the carbocations, methoxy > ethoxy and oxirane > oxetane > tetrahydrofuran for the ethers, indicating the predominance of steric effects.Neighboring group participation in 4-methoxy-1-butanediazonium ions (58) and 4,5-epoxy-1-pentanediazonium ions (74) was detectable but inefficient ( 20percent of cyclic oxonium ions).
- Kirmse, Wolfgang,Jansen, Ulrich
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p. 2607 - 2625
(2007/10/02)
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- Catalysts for alkoxylation reactions
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Catalysts and a method of using said catalysts for the alkoxylation of a variety of materials is disclosed. Catalysts so described produce alkoxylates having a very sharp alkoxylate distribution. The catalysts are supported and unsupported dialkoxy and dialkyl metal fluorides and halides and alkyl metal difluorides and dihalides.
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- Process for the manufacture of glycol monoethers
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A process for the manufacture of the monoether of monoethylene glycol by the hydrogenolysis of a 2-alkyl-1,3-dioxolane, with a co-catalytic system of palladium and an acid of phosphorus or a phosphoric ester of ethylene glycol and in the presence of ethylene glycol.
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- Process for preparing glycol ethers
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This invention pertains to the production of glycol monoalkyl ethers and dialkyl ethers by reaction of an aldehyde, and an alcohol with carbon monoxide and hydrogen in the presence of a catalyst comprising a cobalt-containing compound and a cyclopentadienyl ligand.
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- Metaphenylenediamines in dyeing compositions for keratinic fibers
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Dye compositions comprising a coupler having to the formula STR1 in which formula R1 and R2 are identical or different and represent a hydrogen atom or an alkyl radical having 1 to 2 carbon atoms and n represents a number equal to 1 or 2 and a paraphenylenediamine. This coupler is particularly suitable for use in a dyeing composition comprising paraphenylenediamines responding to the formula STR2 or the corresponding acid salts; formula in which R1, R2 and R3 are identical or different and represent a hydrogen atom, an alkyl or alkoxy radical having 1 to 2 carbon atoms, R4 and R5 are identical or different and represent a hydrogen atom, a alkyl radical, hydroxyalkyl, alkoxyalkyl in which the alkoxy group comprises 1 to 2 carbon atoms, carbamylalkyl, mesylaminoalkyl, acetylaminoalkyl, ureidoaminoalkyl, carbethoxyaminoalkyl, the alkyl groups in R4 and R5 having 1 to 3 carbon atoms, with the reservation that R1 or R3 represents hydrogen when R4 and R5 do not represent a hydrogen atom.
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- Process for preparing glycol ethers
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This invention pertains to the production of glycol monoalkyl ethers and dialkyl ethers by reaction of an aldehyde, and an alcohol with carbon monoxide and hydrogen in the presence of a catalyst comprising a cobalt-containing compound and a Group VIB donor ligand.
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- Opening of Cyclic Acetals by Trichloro-, Dichloro- and Tribromo-borane
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The rate-determining step in the ring opening of cyclic acetals by trichloroborane to yield α-chloro-ethers is shown to be consistent with the formation of an oxocarbenium ion.Subsequent reduction provides a general route for the conversion of a diol into a hydroxy-ether.Tribromoborane is a more powerful and dichloroborane a less powerful reagent than trichloroborane.
- Bonner, Trevor G.,Lewis, David,Rutter, Keith
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p. 1807 - 1810
(2007/10/02)
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- Solid, frozen stabilized hair dye
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A cosmetic composition which at ambient temperature comprises a solution in a water or hydroalcoholic solvent of at least one cosmetic component which in said solution at ambient temperature is not stable, can be preserved, stabilized and packaged by freezing said composition and storing it at a temperature below its freezing point.
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- Dithioles
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The process of reacting dithiolium compounds with an hydroxy compound such as water, alcohols, etc., under basic conditons so as to substitute the hydroxy constituent into the 3 or 5 position of the thiolium ring thus replacing the positive ionic valency with a covalent bond; and to the dithiole compositions formed and uses therefor, for example as corrosion inhibitors, etc. The process can be reversed to reform the original dithiolium compounds by reacting the dithiole compound under acidic conditions. The reactions may be summarized by the following reaction: STR1
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- Process for producing glycol monoether
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Glycol monoethers are produced in high yields by reacting an acetal with carbon monoxide and hydrogen in the presence of a catalyst comprising a cobalt compound and a trivalent organic phosphorus compound or a bidentate chelate ligand containing nitrogen or oxygen. An aldehyde or a compound capable or releasing an aldehyde under reaction conditions and an alcohol can be used instead of the acetal.
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- Optical brightening agents of naphthalimide derivatives
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A naphthalimide derivative having the formula STR1 wherein R is an alkyl, or cycloalkyl, an aralkyl, a haloalkyl, an alkoxyalkyl, a hydroxyalkyl, an N,N-dialkylaminoalkyl, an unsubstituted or halogen-, alkyl-, alkoxy- or hydroxy-substituted aryl, or an ammoniumalkyl; X is a group of the formula, STR2 wherein A is STR3 or an unsubstituted or halogen-substituted arylene, or a group of the formula, STR4 wherein R1 is hydrogen, an alkyl, phenyl, a hydroxyalkyl, or an alkoxyalkyl; Y is --CO--, --COO--, --CONR3 -- (where R3 is hydrogen or an alkyl), or --SO2 --; R2 is hydrogen, an alkyl, a cycloalkyl, an aralkyl, a haloalkyl, an alkyl- or aryl-substituted amino-alkyl, an unsubstituted or halogen-, alkyl-, alkoxy-, hydroxy-, amino- or alkylamino-substituted aryl, a group of the formula, STR5 (where R, R1 and Y are as defined above and R4 is a bivalent group), or a group of the formula, (where R5 is direct linkage or a bivalent group; Q+ is a substituted ammonium, a cycloammonium or a hydrazinium; and α- is an anion), Which is useful for optically brightening an organic polymer material.
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