Abstract: Slugs of a cement slurry and of a resin composition are injected into an underground wellbore. The resin composition contains at least a curable resin, a filler, a swelling agent, a curing initiator, and a crosslinking retarding agent. The curing initiator activates the curing in response to temperature. The crosslinking retarding agent delays curing of the resin, to permit pumping the composition into the wellbore. After injection, the cement slurry and resin composition are allowed to cure, to create a stacked cement and cured resin column that provides a zonal isolation seal within the wellbore. The resin composition may suitably be an elastomer-forming composition. The cured resin may be swellable by allowing contact with a wellbore fluid.

Abstract: The present invention provides a method of preparing oxalic acid (H2C2O4), the method at least comprising the steps of: (a) providing a metal formate (HCO2M) containing stream, wherein the metal (M) of the metal formate (HCO2M) is a monovalent metal selected from the group consisting of Li, Na, K, Cs, Rb and a mixture thereof; (b) heating the metal formate (HCO2M) containing stream thereby obtaining a metal oxalate (M2C2O4) containing stream; (c) subjecting the metal oxalate (M2C2O4) containing stream to electrodialysis, thereby obtaining at least oxalic acid (M2C2O4) and a metal hydroxide (MOH).

Abstract: A process for the preparation of acylated secondary alcohol alkoxylates and a process for making secondary alcohol alkoxy sulfates comprising the steps of:— preparing secondary alcohol alkoxylates by the afore-mentioned process; and sulfating the secondary alcohol alkoxylates is described.

Abstract: A process for the preparation of acylated secondary alcohol alkoxylates and a process for making secondary alcohol alkoxy sulfates comprising the steps of: preparing secondary alcohol alkoxylates by the afore-mentioned process; and sulfating the secondary alcohol alkoxylates is described.

Abstract: A process for the preparation of alkoxysulfates from organic compounds containing one or more nucleophilic groups by reacting said organic compound, in a water-miscible solvent selected from the group consisting of sulfur-containing solvents such as dimethylsulfoxide (DMSO) or sulfolane, or polar solvents such as tetrahydrofuran (THF), dimethylformamide (DMF), dimethylacetamide (DMA) and hexamethylphosphoric triamide (HMPT), with an alkylene sulfate, in a non-water-miscible solvent selected from the group consisting of chlorinated solvents such as methylene chloride, chloroform, carbon tetrachloride, trichloroethane or chlorinated aromatics, such as chlorobenzene or dichlorobenzene, and non-chlorinated aromatics, such as toluene or xylenes, in the presence of a base selected from the group consisting of hydroxides, carbonates and hydrogen carbonates of alkali metals or alkaline earth metals.

Abstract: A process for the conversion of an alkylene oxide to the corresponding alkylene glycol in the presence of carbon dioxide, water and a catalytic composition comprising a mixture of an organic base present in an amount in the range of from 10 to 90 mol % (based on the mixture) and a salt of the organic base and a hydrogen halide the salt being present in an amount in the range of from 10 to 90 mol % (based on the mixture), wherein the organic base comprises a carbon-based compound comprising one or more nitrogen atoms with at least one free electron pair and/or one or more phosphorous atoms with at least one free electron pair, and has a pKa high enough that it is capable of binding carbon dioxide under the reaction conditions.

Abstract: A process for the preparation of an alkoxylate composition, said process comprising the steps of: (a) introducing into a reactor system one or more compounds with one or more active hydrogen atoms, selected from the group comprising alkanoic acids, alkanoic amides, alkanoic ethanolamides, alcohols and alkylmercaptans, and a double metal cyanide catalyst; (b) contacting the one or more compounds with one or more active hydrogen atoms and the double metal cyanide catalyst with propylene oxide and/or butylene oxide to form a first product mixture comprising double metal cyanide catalyst and compounds formed by the addition of one of more propylene oxide and/or butylene oxide units to the one or more compounds with one or more active hydrogen atoms; and (c) contacting the first product mixture with ethylene oxide to form a second product mixture comprising compounds formed by the addition of one of more ethylene oxide units to the compounds formed in step (b).

Abstract: A process for the conversion of an alkylene oxide to the corresponding alkylene glycol in the presence of carbon dioxide, water and a catalytic composition comprising a mixture of an organic base present in an amount in the range of from 10 to 90 mol % (based on the mixture) and a salt of the organic base and a hydrogen halide the salt being present in an amount in the range of from 10 to 90 mol % (based on the mixture), wherein the organic base comprises a carbon-based compound comprising one or more nitrogen atoms with at least one free electron pair and/or one or more phosphorous atoms with at least one free electron pair, and has a pKa high enough that it is capable of binding carbon dioxide under the reaction conditions.

Abstract: The invention relates to a process for the preparation of polyether polyols, which process involves: (a) contacting a phosphorus containing compound having at least one hydroxyl group with alkylene oxide to obtain alkoxylated initiator, (b) contacting the alkoxylated initiator with further alkylene oxide in the presence of a double metal cyanide complex catalyst.

Abstract: A process for the preparation of a resinous composition involving contacting a polyol with a compound containing at least 2 epoxy groups in the presence of hydrogen fluoride.

Abstract: Process for the manufacture of epoxy compounds having the formula wherein Rb represents a group selected from those of the formulae Rg&Parenopenst;Q&Parenclosest;b-alkyl(Q&Parenclosest;a—˜, by reaction of a compound with an alkylene oxide, in the presence of a certain catalyst.

Abstract: A re-moldable cross-linked resin comprising polymer chains which are connected to one another via Diels-Alder adducts obtainable from a dienophile and a diene, the latter being a 2,5-dialkyl substituted furan.