Patent application number | Description | Published |
20080214864 | CONTINUOUS PROCESS FOR DECARBOXYLATING CARBOXYLIC ACIDS - A continuous process for decarboxylating carboxylic acids proceeds by I.) initially charging a carbonyl compound as a catalyst in a solvent at reaction temperature, to obtain a catalyst solution; II.) metering a carboxylic acid into the catalyst solution as an aqueous solution, aqueous suspension or as a water-comprising solid, to obtain a reaction mixture; and III.) continuously removing a mixture of CO | 09-04-2008 |
20080281126 | PROCESS FOR PREPARING AMINES - An amine is prepared by cleaving a carbamate of the formula I | 11-13-2008 |
20080296786 | Process for preparing alkali metal alkoxides - The invention relates to a process for preparing an alcoholic solution of an alkali metal alkoxide from alkali metal hydroxide and alcohol in a reaction column, the alcohol and the alkali metal hydroxide being conducted in countercurrent, which is characterized in that a reflux ratio of at least is established in the reaction column. | 12-04-2008 |
20090114878 | PROCESS FOR STABILIZING OLEFINICALLY UNSATURATED MONOMERS - An olefinically unsaturated monomer is stabilized by a retarder-containing composition which comprises a solvent and a quinone methide as a retarder. | 05-07-2009 |
20090287032 | METHOD FOR PRODUCING DIENES BY HYDRODIMERIZATION - The invention relates to a process for preparing substituted or unsubstituted 1,7-diolefins by hydrodimerizing non-cyclic olefins having at least two conjugated double bonds in the presence of a reducing agent and of a catalyst, wherein the catalyst used is a metal-carbene complex. | 11-19-2009 |
20100076186 | PROCESS FOR PREPARING HETEROCYCLES - Provided is a process for preparing a heterocycle by catalytic reaction of an aromatic dinitrile with an amino alcohol, wherein the process includes: initially charging into a reaction vessel the amino alcohol and a catalyst to produce a reaction mixture; adding the aromatic dinitrile into the reaction mixture, which is maintained at a reaction temperature, wherein no solvent other than the amino alcohol of formula (III) is added to the reaction mixture prior to and/or during the catalytic reaction; and after completion of the catalytic reaction, completely replacing, or substantially completely replacing, unreacted amino alcohol with a nonpolar solvent to obtain the heterocycle, wherein the unreacted amino alcohol is present in an amount of not more than 20 wt. %, preferably 3-10 wt. % or less, based on a total weight of the heterocycle. | 03-25-2010 |
20100267992 | PROCESS FOR PREPARING SUBSTITUTED 1,4-QUINONE METHIDES - A method for preparing a substituted 1,4-quinone methide from a 3,5-disubstituted 4-hydroxybenzaldehyde is provided. Also provided is a method to prepare a 3,5-disubstituted 4-hydroxybenzaldehyde from the corresponding 2,6-disubstituted phenol. | 10-21-2010 |
20120080644 | PROCESS, ABSORPTION MEDIUM, AND APPARATUS FOR ABSORPTION OF CO2 FROM GAS MIXTURES | 04-05-2012 |
20120101295 | PROCESS FOR STABILIZING OLEFINICALLY UNSATURATED MONOMERS - An olefinically unsaturated monomer is stabilized by a retarder-containing composition which comprises a solvent and a quinone methide as a retarder. | 04-26-2012 |
20130247758 | AMINE-CONTAINING ABSORPTION MEDIUM, PROCESS AND APPARATUS FOR ABSORPTION OF ACIDIC GASES FROM GAS MIXTURES | 09-26-2013 |
20130284670 | DEMERCURIZATION OF SOLUTIONS BY ULTRAFILTRATION - The present invention provides a process for removal of mercury from a solution by ultrafiltration with filtration membranes having a pore size of less than or equal to 0.25 μm, for removing mercury from mercury-containing solutions, including alkali metal hydroxide solutions or alkali metal alkoxide solutions. | 10-31-2013 |
20140005344 | HARDENER FOR EPOXY RESIN SYSTEMS AND USE THEREOF | 01-02-2014 |
20140243562 | HYDROGENOLYSIS OF FURFURYL ALCOHOL TO 1,2-PENTANEDIOL - The present invention provides a process for preparing 1,2-pentanediol by reacting furfuryl alcohol with hydrogen in the presence of a catalyst system. The catalyst system contains platinum oxide or contains ruthenium supported on aluminum oxide or activated carbon. The invention also relates to the respective catalysts and processes for producing the catalyst system. | 08-28-2014 |
20140288337 | PROCESS AND COMPOSITION FOR INHIBITING THE POLYMERIZATION OF CYCLOPENTADIENE COMPOUNDS - A process for inhibiting the polymerization of cyclopentadiene compounds (B) by contacting the cyclopentadiene compound with a quinone methide compound (A) of structure (I), | 09-25-2014 |
20140360369 | PROCESS FOR THE ASBORPTION OF CO2 FROM A GAS MIXTURE WITH AN ABSORPTION MEDIUM COMPRISING AMINES - An absorption medium comprising water and at least one amine of formula (I) | 12-11-2014 |
20150125373 | METHOD FOR ABSORBING CO2 FROM A GAS MIXTURE - In a method of absorbing CO | 05-07-2015 |
20150175738 | PROCESSING-FRIENDLY DIANHYDRIDE HARDENER FOR EPOXY RESIN SYSTEMS BASED ON 5,5'-OXYBIS(ISOBENZOFURAN-1,3-DIONE) - The present invention provides a composition comprising 5,5′-oxybis(isobenzofuran-1,3-dione), 4,4′-oxybis(ortho-phthalic acid) and at least one monoanhydride compound selected from the group consisting of methylhexahydroisobenzofuran-1,3-dione, 5-methyl-3a,4,7,7a-tetrahydro-4,7-methanoisobenzofuran-1,3-dione, 5-methyl-3 a,4,7,7a-tetrahydroisobenzofuran-1,3-dione, 3-methylfuran-2,5-dione, 3,3,4,4,5,5-hexafluorodihydro-2H-pyran-2,6(3H)-dione, and 3,3-dimethyldihydrofuran-2,5-dione. The invention also provides a hardener system for epoxy resins, said hardener system comprising said composition. The invention also provides a method for hardening of epoxy resins employing the inventive composition. | 06-25-2015 |
20150175740 | PROCESSING-FRIENDLY DIANHYDRIDE HARDENER FOR EPOXY RESIN SYSTEMS BASED ON 5,5'-CARBONYLBIS(ISOBENZOFURAN-1,3-DIONE) - The present invention provides a composition comprising 5,5′-carbonylbis(isobenzofuran-1,3-dione), 3,3′,4,4′-benzophenonetetracarboxylic acid and at least one monoanhydride compound selected from the group consisting of methylhexahydroisobenzofuran-1,3-dione, 5-methyl-3a,4,7,7a-tetrahydro-4,7-methanoisobenzofuran-1,3-dione, 5-methyl-3a,4,7,7a-tetrahydroisobenzofuran-1,3-dione, 3-methylfuran-2,5-dione, 3,3,4,4,5,5-hexafluorodihydro-2H-pyran-2,6(3H)-dione and 3,3-dimethyldihydrofuran-2,5-dione. The invention also provides a hardener system for an epoxy resin, said hardener system comprising said composition. The invention also provides a method for hardening an epoxy resin employing the inventive composition. | 06-25-2015 |