| Patents for C07C 7 - Purification, separation orstabilisation of hydrocarbons; Use of additives (13,802) |
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| 03/17/2004 | CN1483011A A process to remove reaction by-products from a selective hydrogenation effluent stream |
| 03/17/2004 | CN1142127C Process for refining toluene containing nitrogen impuritier |
| 03/16/2004 | US6706939 Via supplying isomeric mixture to an adsorption column packed with y-type zeolite |
| 03/16/2004 | US6706938 Using barium and potassium exchanged zeolitic molecular sieve as the adsorbent and toluene as the desorbent; purity |
| 03/16/2004 | US6706771 Polymer, a silver salt, and a phthalate |
| 03/16/2004 | US6705113 Olefin plant refrigeration system |
| 03/11/2004 | WO2004020068A2 Method of optimising the operation of a xylene separation unit using simulated countercurrent |
| 03/11/2004 | WO2003059504A3 Molecular sieve regenerating process |
| 03/11/2004 | US20040045804 Method and device for obtaining 1,3 pure butadiene from 1,3 raw butadiene by distillation |
| 03/11/2004 | DE10240604A1 Membrane separation, e.g. of hydrocarbon liquids, in one or more stages, uses pressurized and vaporized feedstock, with thermal energy input, before supply to membrane module |
| 03/10/2004 | EP1395545A1 Methods and compositions for inhibiting polymerization of vinyl monomers |
| 03/10/2004 | EP1395360A1 Process for activating or regenerating a basic metal oxide catalyst useful for olefin isomerization |
| 03/10/2004 | EP1278600B1 Shell catalysts, method for producing the same, and the use thereof |
| 03/10/2004 | EP1185489B1 Method for preventing undesired polymerisation in a mixture of substances containing ethylenically unsaturated compounds |
| 03/10/2004 | EP1068166B1 Process and apparatus for the production and recovery of p-xylene |
| 03/10/2004 | CN1480438A Stable ethene in hibitory compound and its prepn method |
| 03/10/2004 | CN1480437A Method of low polymerizing isobutene in hydrocarbon stream contg n-butene |
| 03/10/2004 | CN1480436A Method for separating methane from carbon 2 component |
| 03/04/2004 | WO2004018393A1 Method for the production of isobutene from commercial methyl tert-butyl ether |
| 03/04/2004 | US20040044264 Complexing with silver, copper compound; separation |
| 03/04/2004 | DE10238370A1 Verfahren zur Herstellung von Isobuten aus technischen Methyl-tert.-butylether Process for the preparation of isobutene from technical methyl tert-butyl ether |
| 03/03/2004 | EP1394144A1 Extraction of vitamin E, phytosterols and squalene from palm oil |
| 03/03/2004 | EP1392603A2 Processes for the purification of higher diamondoids and compositions comprising such diamondoids |
| 03/03/2004 | CN1479774A Isomerisation process |
| 03/03/2004 | CN1478764A Dehalogenate method of carbon-carbon containing double-bonded hydrocarbon |
| 02/28/2004 | CA2400714A1 Use of ionic liquids to separate olefins, diolefins and aromatics |
| 02/26/2004 | WO2004016585A1 Peroxide impurities removal |
| 02/26/2004 | DE10336015A1 Verfahren zur Reinigung der linearen Olefine A process for cleaning of the linear olefins |
| 02/26/2004 | DE10306214A1 Verfahren zur Oligomerisierung von Isobuten in n-Buten-haltigen Kohlenwasserstoffströmen A process for the oligomerization of isobutene into n-butene-containing hydrocarbon streams |
| 02/26/2004 | CA2501845A1 Peroxide impurities removal |
| 02/25/2004 | CN1477147A Synthesis of oily chemical product with multifunctional group, its product and its application |
| 02/25/2004 | CN1139560C Process for separating butane from butene using dimethyl formamide and its mixture |
| 02/24/2004 | US6696616 Process for co-production of metaxylene and paraxylene |
| 02/24/2004 | US6696615 Utilizing calixarene modified stationary phase |
| 02/24/2004 | US6696612 Process for producing isobutylene and methanol |
| 02/19/2004 | WO2004014826A1 Phosphorous removal and diene removal, when using diene sensitive catalyst, during conversion of olefins to branched primary alcohols |
| 02/19/2004 | WO2004014824A1 Selective hydrogenation of acetylenes |
| 02/19/2004 | US20040034247 Compositions and methods for inhibiting vinyl aromatic monomer polymerization |
| 02/19/2004 | US20040033370 Exhibits, in the n-butane/isobutane separation, an n-butane permeance of at least 6.10-7 mol/m2.s.Pa and a selectivity of at least 250 at the temperature of 180 degrees C. |
| 02/19/2004 | US20040031949 Comprising a monobenzyl-1,2,3,4-tetrahydronaphthalene or a mixture of mono- and polybenzyl-1,2,3,4-tetrahydronaphthalene and/or a mixture of partly hydrogenated polyphenyls and polyphenylmethane |
| 02/19/2004 | US20040031763 Catalytic decompositing the peroxide by-products to form oxygen, from the reaction of ethylbenzene to ethylbenzene hydroperoxide; in the production of propylene oxide/styrene monomer; purification |
| 02/19/2004 | DE10233621A1 Verfahren zur Aufarbeitung von Roh-1,3-Butadien Process for working up crude 1,3-butadiene |
| 02/19/2004 | DE10159525A1 Composite adsorbents, useful for elimination of contaminants in light hydrocarbons, comprises alumina, zeolite and metallic components |
| 02/18/2004 | EP1389607A1 Method of inhibiting polymerization of aromatic vinyl |
| 02/18/2004 | CN1476422A Process for selective hydrogenation of olefinic feed stream containing acetylenic and diolefinic impurities |
| 02/17/2004 | US6693225 Process for hydrogenating cuts containing hydrocarbons, in particular unsaturated molecules containing at least two double bonds or at least one triple bond |
| 02/12/2004 | WO2003020943A3 Enzymatic method for the enantiomeric resolution of amino acids |
| 02/12/2004 | US20040030207 Selective hydrogenation of acetylenes |
| 02/12/2004 | DE10233620A1 Kontinuierliches Verfahren zur Auftrennung eines C4-Schnittes A continuous process for fractionating a C4 fraction |
| 02/11/2004 | EP1388529A2 Stable ethylene inhibiting compounds and methods for their preparation |
| 02/11/2004 | EP1388528A1 Process for the oligomerisation of isobutene contained in hydrocarbon streams containing n-butene |
| 02/11/2004 | CN1474794A Method and device for obtaining 1,3-butadiene from 1,3-raw butadiene by distilation |
| 02/11/2004 | CN1137770C Agglomerated zeolite absorbents, mehtod for obtaining them and use of adsorbing paraxylene |
| 02/10/2004 | US6689929 Process for the production of para-xylene using toluene feeds and pressure swing adsorption |
| 02/10/2004 | US6689926 Reduce of phenylacetylene to styrene, said process comprising injecting effective amounts of a styrene polymerization inhibitor into said manufacturing system immediately upstream of said phenylacetylene reduction reactor |
| 02/05/2004 | WO2004011408A1 Separation of propylene and dimethylether from hydrocarbon mixtures |
| 02/05/2004 | WO2004011407A1 Method for working up crude 1,3-butadiene |
| 02/05/2004 | WO2004011406A1 Continuous method for separating a c4 cut |
| 02/05/2004 | WO2004011404A1 Heat-integrated high pressure system for separation of byproducts from an olefin stream |
| 02/05/2004 | US20040020758 Feeding a stream comprising diisobutylene and tertiary butyl alcohol to distillation zone operated at first pressure to remove diisobutylene as first bottoms and maintain a first azeotrope; withdrawing first azeotrope; feeding |
| 02/05/2004 | US20040020757 Process for the mild distillative separation of mixtures |
| 02/05/2004 | US20040020360 Separation of propylene and dimethylether from hydrocarbon mixtures |
| 02/05/2004 | US20040020123 Dewatering device and method for gas hydrate slurrys |
| 02/05/2004 | DE19546514B4 Katalysator und dessen Verwendung Catalyst and its use |
| 02/05/2004 | CA2493080A1 Method for working up crude 1,3-butadiene |
| 02/04/2004 | EP1385808A2 Crystallisation process for producing very pure para-xylene |
| 02/04/2004 | EP1385807A1 Process for improved yields of higher molecular weight olefins from lower molecular weight olefins |
| 02/04/2004 | EP1385626A2 Process for selective hydrogenation of alkynes and catalyst therefor |
| 02/04/2004 | EP0931039B1 Selective hydrogenation of aromatics in hydrocarbon streams |
| 02/04/2004 | CN1472183A Preparing method for high-purity lycopene |
| 02/04/2004 | CN1137073C Coked benzene-thiophenium Co-separating process |
| 02/04/2004 | CN1137072C Process for separating mixture containing 4-methyl-1-pentene and 4-methyl-2-pentene |
| 02/03/2004 | US6686510 Selective hydrogenation, hydroisomerization and metathesis |
| 02/03/2004 | US6685823 Inhibiting the premature polymerization of ethylenically unsaturated monomers by adding compounds selected from c-nitrosoaniline and quinone imine oxime compounds |
| 01/29/2004 | WO2004009737A1 Processes for concentrating higher diamondoids |
| 01/29/2004 | US20040019247 Distillation in presence of a N-oxyl stabilizer, preventing premature polymerization |
| 01/29/2004 | US20040019246 Separating ethylene stream from by-products by distillation, quenching |
| 01/29/2004 | US20040019245 Olefin plant recovery system employing a combination of catalytic distillation and fixed bed catalytic steps |
| 01/29/2004 | CA2492664A1 Processes for concentrating higher diamondoids |
| 01/28/2004 | EP1383775A1 Isoreticular metal-organic frameworks, process for forming the same, and systematic design of pore size and functionality therein,with application for gas storage |
| 01/28/2004 | EP1383722A1 Inhibition of popcorn polymer growth |
| 01/28/2004 | CN1136235C Method for isolating olefins from polyolefin plants |
| 01/27/2004 | CA2157013C Benzene reduction in gasoline by alkylation with higher olefins |
| 01/22/2004 | US20040015033 Method for producing squalene |
| 01/21/2004 | CN1469916A C-nitrosoaniline compounds and their blends as polymerization inhibitors |
| 01/21/2004 | CN1469854A Method and devices for producing naphthalene from coke produced from coke oven crude gas |
| 01/21/2004 | CN1469853A Adsorptive separation process for recovery of two paraffin products |
| 01/20/2004 | US6680419 Process enhancing adsorbent capacity for acetylenic compounds |
| 01/15/2004 | WO2004005437A1 Process for the recovery of an ethylene and propylene containing stream from a cracked gas resulting from hydrocarbon cracking |
| 01/15/2004 | WO2004004901A1 Process for hydrogenating acetylenes |
| 01/15/2004 | US20040010170 A para-xylene separation and isomerization process wherein the components of the process stream are measured using Near Infrared Radiation spectroscopy in an in-line or on-line manner, providing real-time data for process control |
| 01/15/2004 | US20040010159 Blends of quinone alkide and nitroxyl compounds and polymerization inhibitors |
| 01/15/2004 | DE10226596A1 Verfahren zum Verflüssigen eines Kohlenwasserstoff-reichen Stromes mit gleichzeitiger Gewinnung einer C3+-reichen Fraktion mit hoher Ausbeute A method for liquefying a hydrocarbon-rich stream with simultaneous production of C3 + fraction rich in high yield |
| 01/14/2004 | EP1379487A1 A process for the purification and production of a diolefin hydrocarbon stream |
| 01/14/2004 | CN1467203A Process for the purification of mixtures of toluenediisocyanate |
| 01/13/2004 | US6677269 Environmentally safe alkylation of aliphatic and aromatic hydrocarbons with olefins using solid HF-equivalent catalysts |
| 01/08/2004 | WO2004003110A1 Method of removal of carbonyl compounds along with acid gases from cracked gas in ethylene process |
| 01/08/2004 | WO2004002928A1 Separation of unsaturated hydrocarbons from a fluid mixture |
| 01/08/2004 | WO2004002609A2 Processes and apparatus using solid perm-selective membranes in multiple groups for simultaneous recovery of specified products from a fluid mixture |
| 01/08/2004 | US20040006251 Transalkylation of aromatic fluids |