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| Number | Title | Issue Date |
| 4262143 | Preparation of hydroperoxides In the preparation of ethylbenzene hydroperoxide by reacting ethylbenzene with molecular oxygen, selectivity and reaction rate are improved by incorporating in the oxidation mixture a small amount of a hydroxide or salt of sodium or potassium.... | 04/14/1981 |
| 4230640 | Process for the preparation of acrolein and methacrolein A catalyst composition useful for the oxidation of olefins, particularly the oxidation of propylene and isobutylene to produce the corresponding unsaturated aldehydes acrolein and methacrolein, respectively, comprises the combination of oxides of molybden... | 10/28/1980 |
| 4230639 | Process for the preparation of methacrolein A catalyst composition useful for the oxidation of olefins, particularly the oxidation of propylene and isobutylene to produce the corresponding unsaturated aldehydes acrolein and methacrolein, respectively, comprises the combinatin of oxides of molybdenu... | 10/28/1980 |
| 4209650 | Process for producing ethylene glycol Ethylene glycol is prepared by the reaction of ethylene, molecular oxygen and water in the presence of an iodine catalyst and in the presence of a copper co-catalyst or promoter.... | 06/24/1980 |
| 4182915 | Preparation of substituted aromatic compounds Process for the preparation of nucleophilically ring-substituted aromatic compounds from an aromatic-thallium (III) metallate is provided in which the aromatic-thallium (III) metallate is contacted with a source of the nucleophile to form the desired subs... | 01/08/1980 |
| 4151197 | Dimerization process Acrylonitrile is dimerized by reaction in the presence of a catalyst consisting essentially of (a) at least one metal compound of the formula M(X)n wherein M is Zn or Co, X is an anion derived from an alkyl or aryl sulfonic acid or from a carbo... | 04/24/1979 |
| 4134912 | Process for preparing carboxylic acids A carboxylic acid, such as acetic acid, is prepared from a hydrocarbyl alcohol, such as methanol, in carbonylation processes comprising the use of an iodide, carbon monoxide and a nickel catalyst in the presence of a tin promoter.... | 01/16/1979 |
| 4122106 | Process for preparing thallic benzoate Olefins are oxidized to produce the corresponding epoxides by means of an aryl thallic carboxylate in the presence of an inert polar organic solvent and in the presence of water, the novel compound thallic benzoate being a preferred reactant.... | 10/24/1978 |
| 4116983 | Two stage maleic anhydride process Benzene is oxidized with air to produce maleic anhydride in catalyst-containing reactors arranged in series, the gaseous effluent from the first reactor being passed to the second reactor after introduction of substantial amounts of benzene.... | 09/26/1978 |
| 4115444 | Process for preparing carboxylic acid anhydrides A carboxylic acid anhydride such as acetic anhydride, is prepared from a carboxylate ester or a hydrocarbyl ether in carbonylation processes comprising the use of a halide, carbon monoxide and a Group VIII noble metal in the presence of promoters comprisi... | 09/19/1978 |
| 4115421 | Process for converting thallium (I) to thallium (III) A monovalent thallium compound is converted to a trivalent thallium compound by treating the thallium (I) compound with an organic hydroperoxide in the presence of a Group VIII noble metal catalyst in a liquid medium to oxidize the thallium (I) compound t... | 09/19/1978 |
| 4115420 | Catalytic conversion of thallium (I) to thallium (III) A monovalent thallium compound is converted to a trivalent thallium compound by treating the thallium (I) compound with molecular oxygen in the presence of a Group VIII noble metal catalyst to oxidize the thallium (I) compound to a thallium (III) compound... | 09/19/1978 |
| 4115419 | Process for converting thallium (I) to thallium (III) A monovalent thallium compound is converted to a trivalent thallium compound by treating the thallium (I) compound with an organic hydroperoxide in the presence of a Group VIII noble metal catalyst in a liquid medium and in the presence of a promoter comp... | 09/19/1978 |
| 4113756 | Conversion of mono-valent thallium to tri-valent thallium A mono-valent thallium compound is converted to a trivalent thallium compound by treating the thallium (I) compound with molecular oxygen in the presence of a Group VIII noble metal catalyst and in the presence of a promoter comprising an alkali metal com... | 09/12/1978 |
| 4087382 | Catalyst A catalyst composition useful for the oxidation of olefins, particularly the oxidation of propylene and isobutylene to produce the corresponding unsaturated aldehydes acrolein and methacrolein, respectively, comprises the combination of oxides of molybden... | 05/02/1978 |
| 4073876 | Preparation of glycol esters In the preparation of glycol esters by the oxidation of an olefin in the presence of a catalyst comprising tellurium, wherein the accumulation of foreign metals in association with the tellurium catalyst component has an adverse effect upon the reaction, ... | 02/14/1978 |
| 4066706 | Preparation of ethylbenzene hydroperoxide The present invention is concerned with an improved process for the molecular oxygen oxidation of ethylbenzene in the liquid phase to ethylbenzene hydroperoxide. The improved process is particularly concerned with carrying out the oxidation in a series of... | 01/03/1978 |
| 4066575 | Process for the preparation of a supported silver catalyst A supported silver catalyst, having particular utility in the production of ethylene oxide by the controlled, vapor phase, partial oxidation of ethylene employing molecular oxygen as the oxidant, is prepared by impregnation procedures. After impregnation,... | 01/03/1978 |
| 4058542 | Conversion of thallium (I) to thallium (III) A monovalent thallium compound is converted to a trivalent thallium compound by treating the thallium (I) compound with molecular oxygen in the presence of a Group VIII noble metal catalyst and in the presence of a promoter comprising a heterocyclic terti... | 11/15/1977 |
| 4057471 | Recovery of alkylene glycols Ethylene glycol or 1,2-propylene glycol contained in mixtures with lower carboxylate esters of the glycol is recovered by azeotropic distillation of the mixtures with an azeotroping agent forming a minimum boiling azeotrope with the ethylene glycol or the... | 11/08/1977 |
| 4045419 | Chemical process for producing isoprene by pyrolysis of allylic esters Process for preparing unsaturated esters by reacting an olefin having an allylic hydrogen atom with an ester forming material in the presence of oxygen and a catalyst selected from the group consisting of mercury, selenium or tellurium. The unsaturated es... | 08/30/1977 |
| 4045294 | Process for the recovery of alkylene glycols Ethylene glycol or 1,2-propylene glycol contained in mixtures with lower carboxylate esters of the glycol is recovered by azeotropic distillation of the mixtures with an azeotroping agent which is a hydrocarbon which has a boiling point at atmospheric pre... | 08/30/1977 |
| 4045500 | Preparation of ethylene glycol Ethylene glycol is prepared in an oxidation zone by the reaction of ethylene, molecular oxygen, and water in the presence of an iodine source to produce a liquid reaction product which is separated into a lower-boiling portion, a glycol fraction and a hig... | 08/30/1977 |
| 4028195 | Recovery of alkylene glycols by distillation with aqueous organic acid Ethylene glycol or 1,2-propylene glycol contained in mixtures with lower carboxylate esters of the glycol are separated from such mixtures by fractional distillation of the mixtures with the addition to the lower portion of the distillation zone of aqueou... | 06/07/1977 |
| 4021453 | Preparation of epoxides Olefins are oxidized to produce the corresponding epoxides by means of an aryl thallic carboxylate in the presence of an inert polar organic solvent and in the presence of water, the novel compound thallic benzoate being a preferred reactant.... | 05/03/1977 |
| 4021311 | Recovery of alkylene glycols by azeotropic distillation with 1,2,3-trimethyl benzene Ethylene glycol or 1,2-propylene glycol contained in mixtures with lower carboxylate esters of the glycol is recovered by azeotropic distillation of the mixtures with 1,2,3-trimethyl benzene.... | 05/03/1977 |
| 4002678 | Preparation of carboxylic acid anhydrides A carboxylic acid anhydride, such as acetic anhydride, is prepared from a carboxylate ester or a hydrocarbyl ether in carbonylation processes comprising the use of an iodide, carbon monoxide and a nickel-chromium catalyst in the presence of a promoter com... | 01/11/1977 |
| 4002677 | Process for preparing carboxylic acid anhydrides A carboxylic acid anhydride such as acetic anhydride, is prepared from a carboxylate ester or a hydrocarbyl ether in carbonylation processes comprising the use of an iodide, carbon monoxide and a nickel-chromium catalyst in the presence of a tin promoter.... | 01/11/1977 |
| 3985795 | Process for preparing glycols from their ester precursors Glycol esters of an olefin are prepared by contacting an olefin and a molecular oxygen containing gas in a carboxylic acid medium in the presence of a catalyst. Selectivities to the desired glycol esters are improved by treating the viscous residue and th... | 10/12/1976 |
| 3968174 | Method of producing polyhydric compounds A polyhydric compound is produced by catalytically disproportionating a precursor which is a lower carboxylate ester of said compound containing at least one lower carboxylate group and at least one free hydroxyl group. Most preferably the invention relat... | 07/06/1976 |
| 3968175 | Method of producing polyhydric compounds A polyhydric compound is produced by catalytically disproportionating a precursor which is a lower carboxylate ester of said compound containing at least one lower carboxylate group and at least one free hydroxyl group. Most preferably the invention relat... | 07/06/1976 |
| 3964980 | Process for the recovery of ethylene oxide The conventional process for the recovery of ethylene oxide produced by the silver catalyzed, vapor phase, partial oxidation of ethylene with molecular oxygen involves a sequence of steps including absorption in water of the ethylene oxide contained in th... | 06/22/1976 |
| 3960954 | Process for preparing oximes and hydroxylamines Oximes and hydroxylamines are prepared by reacting a primary amine, the amino group of which is attached to a primary or secondary carbon atom, with an organic hydroperoxide in the presence of a catalytic amount of a compound of Ti, V, Cr, Se, Zr, Nb, Mo,... | 06/01/1976 |
| 3956358 | Dimerization method Derivatives of the ,ଲ-unsaturated carboxylic acids are dimerized by reaction in the presence of a catalyst consisting essentially of (a) at least one metal compound of the formula M(X)n wherein M is zinc, aluminum, titanium, vanadi... | 05/11/1976 |
| 3954831 | Dimerization process Acrylonitrile is dimerized by reaction in the presence of a catalyst consisting essentially of (a) at least one metal compound of the formula M(X)n wherein M is Zn or Co, X is an anion derived from an alkyl or aryl sulfonic acid or from a carbo... | 05/04/1976 |
| 3950370 | Process of dimerization Acrylonitrile is dimerized by reaction in the presence of a catalyst consisting essentially of (a) at least one metal compound of the formula M(X)n wherein M is magnesium, chromium or manganese, X is a halide and n is a number equal to the vale... | 04/13/1976 |
| 3947500 | Process for treating reaction mixtures by chemical reduction The present invention is concerned with the treatment of reaction mixtures which result from the metal catalyzed epoxidation of olefinically unsaturated compounds to the corresponding oxirane compound using organic hydroperoxides.... | 03/30/1976 |
| 3947501 | Process for treatment of reaction mixtures by hydrogenation The acidic catalyst characteristics of a reaction mixture resulting from a catalytic epoxidation are reduced whereby dehydration of by-product alcohol is suppressed during subsequent work-up procedures. This reduction is effected by catalytic hydrogenatio... | 03/30/1976 |
| 3947474 | Catalyst and use thereof A catalyst useful for the oxidation of organic compounds, particularly vapor-phase oxidation of benzene with molecular oxygen to produce maleic anhydride, comprises the oxides of molybdenum, vanadium, phosphorus, sodium and boron in combination with an ox... | 03/30/1976 |
| 3932513 | Cyclohexane oxidation The present invention relates to the oxidation of cyclohexane with molecular oxygen in a series of reaction zones, with vaporization of cyclohexane from the last reactor effluent and parallel distribution of this cyclohexane vapor among the series of reac... | 01/13/1976 |
