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| Number | Title | Issue Date |
| 7825282 | Process for the conversion of tertiary butyl alcohol to ethyl tertiary butyl ether A process for the conversion of tertiary butyl alcohol to ethyl tertiary butyl ether, including: dehydrating tertiary butyl alcohol to form a product stream comprising isobutylene and water; separating the product stream to form an isobutylene-rich fraction and a wa... | 11/02/2010 |
| 7652176 | Process for the preparation of dimethyl ether Process for the preparation of dimethyl ether product by catalytic conversion of synthesis gas to dimethyl ether comprising contacting a stream of synthesis gas comprising carbon dioxide with one or more catalysts active in the formation of methanol and the dehydrat... | 01/26/2010 |
| 7335802 | Methods of preparing branched aliphatic alcohols Systems and methods to produced branched aliphatic alcohols are described. Systems may include a dehydrogenation-isomerization unit, an olefin dimerization unit, an olefin isomerization unit, a hydroformylation unit, a dehydrogenation unit, a hydrogenation unit and/... | 02/26/2008 |
| 7323605 | Double metal cyanide-catalyzed, low unsaturation polyethers from boron-containing starters The present invention provides a process for the double metal cyanide (DMC)-catalyzed production of low unsaturation polyethers from boron-containing starters. The polyethers produced by the inventive process may be reacted with one or more isocyanates to provide po... | 01/29/2008 |
| 7323147 | Method and apparatus for treating oxygenate-containing feeds and their use in conversion of oxygenates to olefins A feed vaporization process and apparatus for oxygenate to olefin conversion is provided which uses a vapor-liquid disengaging drum to separate non-volatiles and/or partial non-volatiles from volatiles in the oxygenate feed and produce a vaporized effluent that is r... | 01/29/2008 |
| 7314960 | Catalytic synthesis of oxygenate from alcohol The present invention discloses a method for catalytic synthesis of oxygenate from alcohol. At first, a feeding material comprising at least one alcohol is provided. Next, a copper-containing catalyst is provided and the catalyst further comprises at least one metal... | 01/01/2008 |
| 7304188 | Preparation of highly pure methyl tert-butyl ether The invention relates to a process for preparing methyl tert-butyl ether (MTBE) in qualities which are suitable for organic syntheses and for use as a specialty solvent from MTBE in fuel quality. ... | 12/04/2007 |
| 7282603 | Anhydrous processing of methane into methane-sulfonic acid, methanol, and other compounds Anhydrous processing to convert methane into oxygenates (such as methanol), liquid fuels, or olefins uses an initiator to create methyl radicals. These radicals combine with sulfur trioxide to form methyl-sulfonate radicals. These radicals attack fresh methane, form... | 10/16/2007 |
| 7261065 | Method for controlling compression ignition internal combustion engine The present invention provides a method for controlling a compression ignition internal combustion engine, which can easily cope with a wide range of demand loads. The compression ignition internal combustion engine 1 has a first fuel 2 containing etha... | 08/28/2007 |
| 7247764 | Conversion process The invention relates to a conversion process for making olefin(s) using a molecular sieve catalyst composition. More specifically, the invention is directed to a process for converting a feedstock comprising an oxygenate in the presence of a molecular sieve catalys... | 07/24/2007 |
| 7238846 | Conversion process The invention relates to a conversion process for making olefin(s) using a molecular sieve catalyst composition. More specifically, the invention is directed to a process for converting a feedstock comprising an oxygenate in the presence of a molecular sieve catalys... | 07/03/2007 |
| 7214843 | Treating oxygenate containing feedstreams in the conversion of oxygenates to olefins This invention is directed to removing contaminants from an oxygenate-containing feedstream for an oxygenate to olefin reaction system. Oxygenate feeds used in the conversion of oxygenates to olefins, and which contain contaminants, are heated to form a vapor stream... | 05/08/2007 |
| 7208440 | Method for pretreatment of catalysts with a phosphoric acid base The invention relates to a method for pretreatment of a solid catalyst that is obtained by a reaction between an inorganic binder and phosphoric acid, whereby said method comprises a stage in which said catalyst is brought into contact with a mixture of hydrocarbons... | 04/24/2007 |
| 7202387 | Process for producing dimethyl ether A process for producing dimethyl ether, which includes dehydrating methanol in vapor phase in the presence of an activated alumina catalyst having an average pore radius of 2.5 nm to 8.0 nm both inclusive and having a sodium oxide content of 0.07 wt % or less. This ... | 04/10/2007 |
| 7199193 | Polyethylene glycol compounds and process of making A process for making substituted polyethylene glycol compound. The compound has the formula RO(C2H40)nH wherein R represents a C1–7 hydrocarbon group and n represents the average number of moles of C2H40 groups, ranging from 500 to 2000. The compound has a ratio o... | 04/03/2007 |
| 7169726 | Catalyst for isomerization of solid fischer-tropsch paraffins and method for its production The present invention relates to a catalyst which consists of a combination of zeolite and platinum or palladium on aluminum oxide. The catalyst is suitable for converting solid Fischer-Tropsch paraffins into microcrystalline waxes. ... | 01/30/2007 |
| 7048833 | Method and apparatus for treating oxygenate-containing feeds and their use in conversion of oxygenates to olefins A feed vaporization process and apparatus for oxygenate to olefin conversion is provided which uses a vapor-liquid disengaging drum to separate non-volatiles and/or partial non-volatiles from volatiles in the oxygenate feed and produce a vaporized effluent that is r... | 05/23/2006 |
| 6987204 | Process for recovery of 1,1,1,3,3,3-hexafluoroisopropanol from the waste stream of sevoflurane synthesis Provided is a process of obtaining 1,1,1,3,3,3-hexafluoro-2-propanol (“HFIP”) from a composition comprising an HFIP hydrolyzable precursor. The HFIP hydrolyzable precursor is a compound, other than sevoflurane itself, that has an intact 1,1,1,3,3,3-hexafluoroiso... | 01/17/2006 |
| 6977290 | Process for preparing oligomeric aliphatic diols, polycarbonatediols based thereon and prepolymers thereof The present invention relates to a method for preparing oligomeric aliphatic diols, polycarbonatediols based thereon and NCO-terminated prepolymers obtainable therefrom. The inventive compounds may find use in the preparation of polyurethanes. ... | 12/20/2005 |
| 6936566 | Modified metalloaluminophosphate molecular sieves The invention is directed to a method for modifying a microporous metalloaluminophosphate molecular sieve, the method comprising the steps of a) introducing a compound containing at least one M-X group within the cages of said microporous molecular sieve; and b) rea... | 08/30/2005 |
| 6924399 | Method of manufacturing dimethyl ether Dimethyl ether is obtained with at low cost by transporting methanol under room temperature and atmospheric pressure from the methanol producing district to the dimethyl ether consuming district or its neighboring district by converting the raw material containing t... | 08/02/2005 |
| 6906233 | Modified metalloaluminophosphate molecular sieves The invention is directed to a method for modifying a microporous metalloaluminophosphate molecular sieve, the method comprising the steps of a) introducing a compound containing at least one M-X group within the cages of said microporous molecular sieve; and b) rea... | 06/14/2005 |
| 6846961 | Preparation of 1-methoxy-2-propanol Process for preparing 1-methoxy-2-propanol by reacting propylene oxide with methanol in the presence of a racemic catalyst which comprises an asymmetric polydentate (tetradentate) ligand complexed with a metal atom, where the complex has an approximately planar geom... | 01/25/2005 |
| 6822125 | Method for preparing dimethylether using a membrane reactor for separation and reaction The present invention relates to a method for preparing dimethylether from methanol using a membrane reactor, more particularly to a method for preparing dimethylether from methanol using a membrane capable of carrying out a reaction and a separation at the same tim... | 11/23/2004 |
| 6740783 | Process for preparing dimethyl ether from crude methanol The present invention relates to a process for preparing dimethyl ether from crude methanol. More particularly, this invention relates to an improved process for preparing dimethyl ether useful as a fresh fuel as well as a raw material in chemical industry with no g... | 05/25/2004 |
| 6740785 | Catalytic oxidation of organic substrates by transition metal complexes in organic solvent media expanded by supercritical or subcritical carbon dioxide Improved oxidation methods are provided wherein a reaction mixture comprising a substrate to be oxidized (e.g., phenols, alkenes) and an oxidation catalyst (typically dispersed in an organic solvent system) is supplemented with a compressed gas which expands the rea... | 05/25/2004 |
| 6737553 | Method for producing surfactant alcohols and surfactant alcohol ethers, the resulting products and their use The invention describes a process for the preparation of novel surfactant alcohols and surfactant alcohol ethers by derivatization of olefins having from about 10 to 20 carbon atoms or of mixtures of such olefins to give alkanols, and optional subsequent alkoxylatio... | 05/18/2004 |
| 6649690 | Method for preparing polymers of glycerol with a saponite catalyst The present invention generally relates to a process polymerizing a feedstock which comprises glycerol or derivatives thereof, said process comprising heating said feedstock, in the presence of at least one synthetic magnesium saponite clay catalyst in th... | 11/18/2003 |
| 6555717 | Catalytic dehydroxylation of diols and polyols Secondary alcohols, specifically diols and polyols, are dehydroxylated to the corresponding primary alcohols using a homogeneous organometallic ruthenium complex catalyst.... | 04/29/2003 |
| 6518465 | Reactive distillation process for hydrolysis of esters A process for hydrolyzing an alkyl ester to produce a carboxylic acid product and an ether product, the process includes the steps of introducing into a reaction zone of a reactive distillation column a feed containing the alkyl ester wherein the reaction... | 02/11/2003 |
| 6486362 | Process for producing oxygen-containing compounds containing at least one oxygen atom bonded to two distinct carbon atoms which are not bonded together and not including a multiple bond A process for producing oxygen-containing compounds containing at least one oxygen atom bonded to two distinct carbon atoms which are not bonded together and not comprising a multiple bond comprises a step a) for hydroformylation of a feed comprising at l... | 11/26/2002 |
| 6472569 | Silicoaluminophosphate material, a method of making such improved material and the use thereof in the conversion of oxygenated hydrocarbons to an olefin and/or an ether A catalyst system comprising a silicoaluminophosphate impregnated with a compound selected from the group consisting of phosphoric acid, boric acid, tributyltin acetate, and combinations of any two or more thereof, and a method of preparing such catalyst ... | 10/29/2002 |
| 6458856 | Separation process for one-step production of dimethyl ether from synthesis gas An improvement to the process for separating dimethyl ether (DME) from byproducts in a one-step catalytic conversion of synthesis gas (syngas), the improvement comprising using a scrubbing solvent comprising a mixture of dimethyl ether and methanol for th... | 10/01/2002 |
| 6232508 | Process for manufacturing ether and high purity butene-1 A process for the manufacture of ether from a feedstock containing isoolefins and linear olefins. The process is one which has a high conversion of isoolefins thereby permitting the separation of linear olefins without the associated difficulty in separat... | 05/15/2001 |
| 6218583 | Process for the production of ethers from alcohols Process for the production of ethers starting from alcohols, in the presence of liquid acid catalysts, essentially comprising the following steps: a) sending a stream containing C4 -C10 alcohols to a reaction zone obtaining a product... | 04/17/2001 |
| 6218582 | Method for the reduced formation of tertiary butyl alcohol in a finishing reactor in the manufacture of methyl tertiary butyl ether A method for the preparation of methyl tertiary butyl ether is provided wherein a mixture of methanol and substantially peroxides-free tertiary butyl alcohol are catalytically reacted to form a reaction product comprising unreacted methanol, unreacted ter... | 04/17/2001 |
| 6133484 | Methods for decomposing esters and purifying alcohols A tertiary butyl alcohol charge stock typically contaminated with from about 0.5 to about 2 wt. % of formates and peroxides, is passed through an oxygenates decomposition reactor containing a bed of a decomposition catalyst comprising rhodium, platinum, p... | 10/17/2000 |
| 6090988 | Method for recovering alkyl vinyl ether A reaction mixture in a gas form which is obtained by intramolecular dehydration of glycol ether in a gas phase is liquidized and collected by using as a collecting agent the glycol ether which is a raw material of the reaction mixture. The collected liqu... | 07/18/2000 |
| 6063966 | Isobutylene-assisted aqueous extraction of methanol from methyl tertiary butyl ether An impure methyl tertiary butyl ether product contaminated with isobutylene, methanol and water is purified by continuous counter-current contact with water and an isobutylene fraction in an extraction zone comprising a counter-current contact tower to pr... | 05/16/2000 |
| 5985100 | Process for separating butanol and dibutyl ether by means of dual-pressure distillation Butanol and dibutyl ether are separated from a mixture containing water, dibutyl ether and n-butanol, 2-butanol and/or isobutanol by a process in which a) the mixture is introduced into a first distillation column, essentially butanol is separated off at ... | 11/16/1999 |
