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| Number | Title | Issue Date |
| 7165634 | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des... | 01/23/2007 |
| 7147068 | Methods and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des... | 12/12/2006 |
| 7119224 | Preparation of (METH) acrylic acid and (METH) acrylic esters A process for preparing and/or working up mixtures by (meth)acrylic acid and/or (meth)acrylic ester in the presence of at least one polymerization inhibitor and at least one oxygenous gas, which comprises metering in at least part of the oxygenous gas at an exit rat... | 10/10/2006 |
| 7048050 | Method and apparatus for cementing drill strings in place for one pass drilling and completion of oil and gas wells The steel drill string attached to a drilling bit during typical rotary drilling operations used to drill oil and gas wells is used for a second purpose as the casing that is cemented in place during typical oil and gas well completions. Methods of operation are des... | 05/23/2006 |
| 7036610 | Apparatus and method for completing oil and gas wells A method of drilling and completing a wellbore in a geological formation to produce hydrocarbons from a well comprising at least the following four steps: drilling the well with a retrievable drill bit attached to a casing; removing the retrievable drill bit from th... | 05/02/2006 |
| 6914156 | Process for producing diacetoxybutene In yielding diacetoxybutene by feeding butadiene, acetic acid, and oxygen in the presence of a solid catalyst containing palladium, the butadiene can be efficiently reacted to produce diacetoxybutene in high yield by feeding an oxygen-containing gas containing 7 mol... | 07/05/2005 |
| 6300515 | Process for the isomerization of allylic compounds The invention provides a process that includes isomerizing at least one allylic substrate having an acyloxyl group or a hydroxyl group at the allyl position thereof, to produce a corresponding allylic isomer, wherein the isomerizing is conducted in the pr... | 10/09/2001 |
| 5874610 | Process for the recovery of a carbonylation product A process for the recovery of a carbonylation product from a liquid reaction composition of an iridium-catalysed carbonylation reaction of a carbonylatable reactant comprises subjecting the composition to a vaporization with or without the addition of hea... | 02/23/1999 |
| 5777155 | Process for producing unsaturated glycol diester A process for producing an unsaturated glycol diester disclosed, which process comprises reacting a conjugated diene with a carboxylic acid and molecular oxygen in the presence of a solid catalyst comprising (1) palladium and (2) tellurium as active compo... | 07/07/1998 |
| 4593135 | Method for promoting the activity and/or extending the life of cation-exchangeable layered clay catalysts in proton-catalyzed reactions A method for promoting the activity and/or extending the life of a cation-exchangeable layered clay catalyst in reactions susceptible to catalysis by protons which method comprises the addition to the catalyst of water as the sole additive. The quantity o... | 06/03/1986 |
| 4556730 | Ester compounds from 5-vinyl-2-norbornene Novel compounds made from the reaction of 5-vinyl-2-norbornene with carboxylic acid anhydrides in the presence of oxygen are described. The process to make these novel esters is preferably conducted at a temperature in the range from about 50° to 150° C... | 12/03/1985 |
| 4532347 | Membrane solvent extraction process The instant invention relates to a membrane solvent extraction and reaction system. More particularly it pertains to an improvement in the membrane solvent extraction system wherein a solute is extracted through a polymeric membrane from one solvent liqui... | 07/30/1985 |
| 4517374 | Cycloalkane epoxides produced by air oxidation of cycloalkenes over oxide catalysts A process for the production of cycloalkane epoxides from cycloalkenes in the presence of an oxide catalyst, oxygen and a carboxylate ion source via air oxidation is described. The oxide catalyst may have as a cation boron, chromium, iron, nickel, copper,... | 05/14/1985 |
| 4451668 | Alkane acetates produced by oxidative esterification of olefins over transition metal borates in the presence of acetic anhydride A process for the production of alkane acetates from olefins in the presence of transition metal borate catalysts, oxygen and acetic anhydride or acetic acid and acetic anhydride via oxidative esterification is described. The reaction is conducted at a te... | 05/29/1984 |
| 4450290 | Alkane acetates produced by oxidative esterification of olefins over transition metal borates in the presence of acetic acid A process for the production of alkane acetates from olefins in the presence of a transition metal borate catalyst, oxygen and acetic acid alone via oxidative esterification is described. The reaction is conducted at a temperature in the range of 120° to... | 05/22/1984 |
| 4436926 | Alkane acetates produced by oxidative esterification of olefins over a catalyst containing a rare earth oxide A process for the production of alkane acetates from olefins in the presence of a catalyst containing a rare earth oxide, oxygen and a carboxylate ion source via oxidative esterification is described. The reaction is conducted at a temperature in the rang... | 03/13/1984 |
| 4436932 | Alkane acetates produced by oxidative esterification of olefins over ammonium borate in the presence of a carboxylate ion source A process for the production of alkane acetates from olefins in the presence of an ammonium borate catalyst, oxygen and a carboxylate ion source via oxidative esterification is described. The reaction is conducted at a temperature in the range of 80° to ... | 03/13/1984 |
| 4436931 | Alkane acetates produced by oxidative esterification of olefins over certain oxide catalysts A process for the production of alkane acetates from olefins in the presence of an oxide catalyst selected from the group of oxides consisting of niobium oxide, iron oxide and bismuth oxide, oxygen and a carboxylate ion source via oxidative esterification... | 03/13/1984 |
| 4436930 | Alkane acetates produced by oxidative esterification of olefins over alkali metal borates A process for the production of alkane acetates from olefins in the presence of an alkali metal borate catalyst, oxygen and a carboxylate ion source via oxidative esterification is described. The reaction is conducted at a temperature in the range of 50°... | 03/13/1984 |
| 4436929 | Alkane acetates produced by oxidative esterification of olefins over alkali earth metal borates A process for the production of alkane acetates from olefins in the presence of an alkali earth metal borate catalyst, oxygen and a carboxylate ion source via oxidative esterification is described. The reaction is conducted at a temperature in the range o... | 03/13/1984 |
| 4436928 | Alkane acetates produced by oxidative esterification of olefins over catalyst systems containing oxides and borates A process for the production of alkane acetates from olefins in the presence of an oxide/borate catalyst system, oxygen and a carboxylate ion source via oxidative esterification is described. The reaction is conducted at a temperature in the range of 100Â... | 03/13/1984 |
| 4436927 | Alkane acetates produced by oxidative esterification of olefins over thallium borate A process for the production of alkane acetates from olefins in the presence of a thallium borate catalyst, oxygen and a carboxylate ion source via oxidative esterification is described. The reaction is conducted at a temperature in the range of 120° to ... | 03/13/1984 |
| 4420634 | Process for the oxidation of unsaturated aliphatic hydrocarbons The invention relates to a process for the oxidation of unsaturated hydrocarbons, particularly butenes and isobutylene, for the production of acetic acid, propionic acid and acetone. Specifically the invention comprises the highly selective oxidation of a... | 12/13/1983 |
| 4389389 | Process for preparation of high purity tellurium This invention is generally directed to an improved process for the preparation of tellurium in high purity which comprises reacting tellurium dioxides, with a diol, and subjecting the resulting tellurium ester, subsequent to purification, to a reduction ... | 06/21/1983 |
| 4324909 | Process for preparing glycols and glycol esters In the process for catalytically reacting olefin and oxygen to provide glycol or a mixture of glycol and glycol ester, higher rates of reaction and/or higher selectivities for the desired product(s) are obtained employing as catalyst, a composition compri... | 04/13/1982 |
| 4297506 | Synthesis of esters An organic ester is produced by conversion of an organic halide employing excess alkali metal carboxylate. A resultant reaction mass including solids comprised of alkali metal halide is obtained containing occluded in the solids portion an amount of other... | 10/27/1981 |
| 4263448 | Process for oxidation of hydrocarbons An oxidizable hydrocarbon is oxidized in a reaction zone at elevated temperature in the presence of a liquid reaction medium by introducing the hydrocarbon and a feed stream containing molecular oxygen to the reaction zone under conditions sufficient to o... | 04/21/1981 |
| 4256912 | Removal of soluble tellurium or compounds thereof from a crude glycol ester solution A method for the removal of soluble tellurium compounds from vicinal glycol ester solutions, prepared with tellurium-halide ion catalyst systems, by diluting the tellurium-containing vicinal glycol ester solution with water and contacting said glycol-wate... | 03/17/1981 |
| 4245114 | Glycol ester preparation In the preparation of glycol esters by the liquid phase reaction of an olefin, molecular oxygen, and a carboxylic acid in the presence of a catalyst system comprising a variable valent cation in association with bromine, chlorine, a bromine-containing com... | 01/13/1981 |
| 4244936 | Recovery of tellurium from acidic sulfonated ion exchange resins by acid elution A process for the recovery of tellurium compounds which have been retained on a strongly acidic sulfonated ion exchange resin employed to remove soluble tellurium compounds from tellurium-containing vicinal glycol ester solutions, by elution of the resin ... | 01/13/1981 |
| 4239911 | Manufacture of glycol esters Alkylene glycol dicarboxylates are obtained by reacting carboxylic acid esters of monohydric or polyhydric aliphatic short-chain alcohols with an olefin and oxygen in the presence of a catalyst, a hydrolyzing agent and water.... | 12/16/1980 |
| 4238624 | Process for making glycol esters Ethylene glycol mono- and dialkanoates are produced by the vapor phase reaction of ethylene, molecular oxygen, and a lower alkanoic acid at about 150° C.-225° C. in the presence of an iodine source and a catalyst consisting essentially of bismuth-stabil... | 12/09/1980 |
| 4237312 | Oxidation process including recovery and recycle of catalyst In the oxidation of acyclic conjugated dienes, recovery and recycle of the oxidation catalyst is accomplished by distilling off the oxidation solvent, extraction of the oxidation product with a suitable solvent, and removal of the extraction solvent resid... | 12/02/1980 |
| 4233230 | Process for preparing olefins by metathesis of cyclic olefins with acyclic olefins A process for preparing esters and halides is disclosed comprising the step of reacting a cyclic olefin having the formula I ##STR1## wherein R1 and R4 are the same or different from each other and each represents hydrogen, meth... | 11/11/1980 |
| 4228301 | Process for the preparation of diacetoxybutene In a process for preparing diacetoxybutene by subjecting butadiene, acetic acid and oxygen to reaction, the discharge gas from the reaction system or purification system, containing butadiene and/or acetic acid, is treated by contacting with diacetoxybute... | 10/14/1980 |
| 4224301 | Removal of tellurium from glycol ester solutions A method for the removal and recovery of tellurium from a vicinal glycol ester solution containing soluble tellurium compounds by contacting the tellurium-containing glycol ester solution at a suitable temperature with granular activated carbon to adsorb ... | 09/23/1980 |
| 4221917 | Production of esters from monoolefins and diolefins Monoolefins and diolefins are converted to corresponding esters in a process by contacting together at least one monoolefin, diolefin or mixture thereof, oxygen, at least one iodosoaryl dicarboxylate and at least one carboxylic acid, carboxylic acid anhyd... | 09/09/1980 |
| 4220800 | Oxidative esterification process Saturated vicinal esters are produced by reacting olefins with carboxylic acids and oxygen in the presence of a boron-containing catalyst component.... | 09/02/1980 |
| 4219666 | Preparation of carboxylic acid esters of vicinal glycols Carboxylic acid esters of vicinal glycols are prepared by oxidizing olefins with oxygen in the presence of carboxylic acids and of halogen and tellurium salts as catalysts, the reaction being carried out in vessels and apparatus consisting of, or lined wi... | 08/26/1980 |
| 4208534 | Process for preparing ethylene glycol esters Ethylene glycol esters are obtained from the oxyacylation reaction of ethylene, oxygen and a carboxylic acid in the vapor phase at an elevated temperature and at a controlled pressure in the presence of a catalytically effective amount of a catalyst compr... | 06/17/1980 |