Class / Patent application number | Description | Number of patent applications / Date published |
585326000 | Polyolefin | 26 |
20090054713 | Method for preparing polyolefinic bases of synthetic oils - The invention relates to a method for the preparation of the polyolefinic bases of synthetic oils by the cationic oligomerization of olefinic feedstock and can be used in the petrochemical industry. A new method for the preparation of the polyolefinic bases of synthetic oils has been developed, which comprises the steps of conditioning olefinic feedstock, preparing and dosing in a reactor, solutions and suspension of the components of a catalytic system Al(O)—HCl-TBCh, isomerizing alpha-olefins and oligomerizing higher olefins and mixtures thereof under the action of the catalytic system Al(O)—HCl-TBCh, separating spent catalyst, dividing an oligomerizate into fractions and hydrogenating the fractions separated under the action of a catalyst Pd(0.2% w)/A1203+NaOH. The invention provides the improvement of all steps of the method elaborated. For the corrosive activity of products to be removed, a method further comprises a step of the dechlorination of oligomerizate present chlorine-containing oligoolefins with metallic aluminum, triethyl aluminum, alcohol KOH solutions or the thermal dehydrochlorination of chlorine-containing polyolefins in the absence or presence of KOH. For improvement of method technico-economic indices owing to an increase in the yield of polyolefin target fractions having a kinetic viscosity of 2-8 cSt at 100° C., the method further comprises a step of the thermal depolymerization of restricted consumable high molecular polyolefins with a kinetic viscosity of 10-20 cSt at 100° C. to target polyolefins with a kinetic viscosity of 2-8 cSt at 100° C. | 02-26-2009 |
20100331591 | Olefin Oligomerization Process - In a process for oligomerizing an olefinic hydrocarbon feedstock comprising at least 65 wt % olefins and/or sulfur-containing molecules, the feedstock is contacted under oligomerization conditions with (a) a first unidimensional 10-ring molecular sieve catalyst and (b) a second multidimensional crystalline molecular sieve catalyst. The first and second catalysts may be contained in separate reactors or as separate beds in a single reactor. | 12-30-2010 |
20110004038 | PROCESS TO MAKE BASE OIL FROM THERMALLY CRACKED WAXY FEED USING IONIC LIQUID CATALYST - We provide a process for making a base oil, comprising: a) selecting an olefin feed produced by thermal cracking of a waxy feed; b) oligomerizing the olefin feed in an ionic liquid oligomerization zone at a set of oligomerization conditions to form an oligomer; and c) alkylating the oligomer in the presence of an isoparaffin, in an ionic liquid alkylation zone, at a set of alkylation conditions to form an alkylated oligomeric product having a kinematic viscosity at 100° C. of 6.9 mm | 01-06-2011 |
20110034747 | Process and system for the production of isoprene - Disclosed herein is a process for producing isoprene that includes reacting a mixed C | 02-10-2011 |
20110034748 | OLIGOMERIZATION OF PROPYLENE TO PRODUCE BASE OIL PRODUCTS USING IONIC LIQUIDS-BASED CATALYSIS - We provide a process, comprising:
| 02-10-2011 |
20110306812 | PROCESS FOR THE COOLIGOMERIZATION OF OLEFINS - In a process for the cooligomerization of olefins, an olefin starting material comprising olefins having n carbon atoms and olefins having 2n carbon atoms is reacted over an olefin oligomerization catalyst to give a reaction product. The process is carried out under such conditions that the conversion of olefins having 2n carbon atoms is less than 10%. Both the cooligomer having 3n carbon atoms and the olefin having 2n carbon atoms which has been separated off from the reaction product have a high hydroformylatability. | 12-15-2011 |
20120209045 | Diesel and Jet Fuels Based on the Oligomerization of Butene - A renewable biofuel based on a highly efficient batch catalysis methodology for conversion of 1-butene to a new class of potential jet fuel blends. By tuning the catalyst and then using the dimer produced, the carbon use is about 95% or greater. This latter point will be particularly important in the future, where the source of raw materials (i.e., biomass/biofeedstock) is limited. Also noteworthy, the batch catalysis approach disclosed requires a minimal input of energy and hydrogen to make fuels that possess useful flash points, coldflow properties, and solution density/energy content. This new process affords a saturated hydrocarbon fuel that has a high solution density and thus possesses a higher calculated power density (per volume) than similar fuels made by the GTL Fischer-Tropsch processes. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope of the claims. | 08-16-2012 |
20120232319 | Process and System for the Production of Isoprene - Disclosed herein is a process for producing isoprene that includes reacting a mixed C | 09-13-2012 |
20130253244 | Process to Produce Improved Poly Alpha Olefin Compositions - This invention is directed to a two-step process for the preparation of improved poly alpha olefins wherein the first step involves oligomerizing low molecular weight linear alpha olefins in the presence of a single site catalyst and the second step involves oligomerization of at least a portion of the product from the first step in the presence of an oligomerization catalyst. The dimer product from the first oligomerization is characterized by a tri-substituted vinylene olefin content of at least 25 wt %. | 09-26-2013 |
20140081062 | Process for the Preparation of Butadiene with Removal of Oxygen from C4-Hydrocarbon Streams - A process for preparing butadiene from n-butane by two-step dehydrogenation and removal of the residual oxygen comprised in the gas stream by means of a catalytic combustion stage which is carried out in the presence of a catalyst which comprises a monolith which comprises a catalytically inert material having a low BET surface area and a catalyst layer which has been applied to the monolith and comprises an oxidic support material, at least one noble metal selected from the group consisting of the noble metals of group VIII of the Periodic Table of the Elements, optionally tin and/or rhenium, and optionally further metals, where the thickness of the catalyst layer is from 5 to 500 μm, is described. | 03-20-2014 |
20140088331 | PROCESS FOR PRODUCING 1,3-BUTADIENE BY DIMERIZING ETHYLENE AND DEHYDROGENATING THE BUTENES OBTAINED - The present invention describes a process for the production of 1,3-butadiene from ethylene by dimerizing ethylene into butenes using homogeneous catalysis and dehydrogenating the butenes obtained. | 03-27-2014 |
20140088332 | PROCESS FOR THE PRODUCTION OF 1,3-BUTADIENE IMPLEMENTING THE OLIGOMERIZATION OF ETHYLENE AND THE DEHYDROGENATION OF THE BUTENES THAT ARE OBTAINED - This invention describes a process for the production of 1,3-butadiene from ethylene implementing a stage for oligomerization of ethylene into n-butenes and into oligomers with 6 carbon atoms and more by homogeneous catalysis, a stage for separation in such a way as to obtain an n-butene-enriched fraction, and then a stage for dehydrogenation of said n-butene-enriched fraction. | 03-27-2014 |
20140200379 | Process for the Oxidative Dehydrogenation of N-Butenes to Butadiene - The invention relates to a process for preparing butadiene from n-butenes, which comprises the following steps:
| 07-17-2014 |
20140323784 | HIGH PRODUCTIVITY KOLBE REACTION PROCESS FOR TRANSFORMATION OF FATTY ACIDS DERIVED FROM PLANT OIL AND ANIMAL FAT - Oils from plants and animal fats are hydrolyzed to fatty acids for a Kolbe reaction. The invention relates to a high productivity Kolbe reaction process for electrochemically decarboxylating C4-C28 fatty acids using small amounts of acetic acid to lower anodic passivation voltage and synthesizing C6-C54 hydrocarbons. The C6-C54 undergo olefin metathesis and/or hydroisomerization reaction process to synthesize heavy fuel oil, diesel fuel, kerosene fuel, lubricant base oil, and linear alpha olefin products useful as precursors for polymers, detergents, and other fine chemicals. | 10-30-2014 |
20150018589 | Manufacture of Butadiene from Ethylene - A method of producing butadiene includes: (1) dimerizing ethylene to butene followed by (2) oxidatively dehydrogenating the butene to butadiene and (3) recovering the butadiene by (i) absorbing the product with a hydrocarbon absorber oil and (ii) stripping a crude product stream from the absorber oil. The absorber oil is selected so as to be effective to sequester ethylene dimerization-derived impurities from the system. | 01-15-2015 |
20150126788 | METHOD FOR PRODUCTION OF CONJUGATED DIOLEFIN - An object of the present invention is to provide a method for production of a high purity conjugated diolefin. The method for production of a conjugated diolefin of the present invention comprises steps of supplying a source gas containing a C4 or higher monoolefin and an oxygen-containing gas into a reactor, bringing a catalyst into contact with the gas mixture, compressing a gas containing a conjugated diolefin produced by an oxidative dehydrogenation reaction to obtain a liquefied gas and rinsing the liquefied gas with water. | 05-07-2015 |
20150329442 | RECOVERY OPTIONS FOR n-BUTANE DEHYDROGENATION FOR ON-PURPOSE BUTADIENE PRODUCTION - A process for the production of butadiene is presented. The process converts a butane stream through dehydrogenation to process stream having butenes. The butenes are treated and separated from the process stream to generate an olefin rich stream. The olefin rich stream is passed to an oxydehydrogenation reactor for conversion to butadienes. The process utilizes a cold-box separation process for efficiently separating the process stream generated through dehydrogenation to separate light gases from the C4 hydrocarbon stream. | 11-19-2015 |
20160002126 | Oxidative Dehydrogenation Process With Hydrocarbon Moderator Gas and Reduced Nitrogen Feed - Oxidative dehydrogenation includes: (a) providing a gaseous feed stream to a catalytic reactor, the feed stream comprising a dehydrogenation reactant, oxygen, superheated steam, hydrocarbon moderator gas and optionally nitrogen, wherein the molar ratio of moderator gas to oxygen in feed stream is typically from 4:1 to 1:1 and the molar ratio of oxygen to nitrogen in the feed stream is at least 2; (b) oxidatively dehydrogenating the reactant in the reactor to provide a dehydrogenated product enriched effluent product stream; and (c) recovering dehydrogenated product from the effluent product stream. One preferred embodiment is a process for making butadiene including dimerizing ethylene to n-butene in a homogeneous reaction medium to provide a hydrocarbonaceous n-butene rich feed stream and oxidatively dehydrogenating the n-butene so formed. | 01-07-2016 |
585327000 | From O compound feed or intermediate | 8 |
20100317908 | Integrated Dimethyl Ether Recovery From An Oxygenate-To-Olefins Process And Production Of Polypropylene - Provided is a method of producing polypropylene comprising contacting an oxygenate stream with a molecular sieve to form an olefin stream comprising propane, propylene and dimethylether; introducing the olefin stream into a propylene rectification tower possessing from less than 200 theoretical stages; withdrawing from the propylene rectification tower a bottom stream comprising dimethylether, a sidestream comprising propane, and an overhead stream comprising propane and propylene; introducing the overhead to a condenser to accumulate a propylene-rich stream; passing the propylene-rich stream to a splitter to produce (i) a first propylene stream that is introduced into a polypropylene reactor to contact a polyolefin catalyst, and (ii) a second propylene stream that is re-introduced into the rectification tower, the first and second propylene streams introduced at a desirable ratio; and recirculating the dimethylether stream to contact the molecular sieve. | 12-16-2010 |
20110166400 | DIADEHYDE COMPOUND, PREPARATION METHOD THEREOF, AND SYNTHETIC METHOD OF CAROTENOIDS USING THE SAME - The novel C dialdehyde compound which can be efficiently utilized in the synthesis of carotenoid compounds based on the sulfone chemistry, the preparation method of the same, and the expeditious and practical synthetic processes for lycopene and β-carotene by the use of the above novel compound are disclosed. The syntheses of lycopene and β-carotene are characterized by the processes of the coupling reaction between two equivalents of geranyl sulfone or cyclic geranyl sulfone and the above C dialdehyde, the functional group transformation reactions of the diol in the resulting C 40 coupling products to X's (either halogens or ethers), and the double elimination reactions of the functional groups of the benzenesulfonyl and X to produce the fully conjugated polyene chain of the carotenoids. | 07-07-2011 |
20140128650 | RENEWABLE OLEFINS FROM A MIXTURE OF ACETIC ACID AND PROPIONIC ACID - A process is described for making a product mixture including isobutene, propylene, 1-butene, 2-butene 2-methyl-1-butene and 2-methyl-2-butene from a mixture of acetic acid and propionic and through reaction in the presence of a source of hydrogen and of a mixed oxide catalyst, for example, a Zn | 05-08-2014 |
20140378726 | CATALYTIC CONVERSION PROCESSES USING IONIC LIQUIDS - A process for making isoprene from isobutane is described. The process allows control of the isobutene concentration entering the isoprene reaction zone to be at least about 40% consistently. The process also allows control of the oxygenate removal zone. | 12-25-2014 |
20150291487 | PROCESS FOR PREPARING ETHYLENE, PROPYLENE AND ISOPRENE FROM AN OXYGENATE - The invention relates to a process for preparing ethylene, propylene and isoprene from an oxygenate, the process comprising the following steps: a) contacting the oxygenate with a molecular sieve-comprising catalyst, at a temperature in the range of from 350 to 1000° C. to produce an oxygenate conversion effluent comprising ethylene, propylene and C4+ hydrocarbons including C4+ paraffins and C4+ olefins including isobutene; b) subjecting the oxygenate conversion effluent to one or more separation steps such that at least an olefin product stream comprising ethylene and/or propylene, and a stream comprising C4 hydrocarbons including butane, n-butenes and isobutene, are obtained; c) reacting at least part of the isobutene with formaldehyde to produce isoprene. | 10-15-2015 |
20160076157 | PRODUCTION OF HYDROCARBONS FROM PLANT OIL AND ANIMAL FAT - Oils from plants and animal fats are hydrolyzed to fatty acids for a Kolbe reaction. The invention relates to a high productivity Kolbe reaction process for electrochemically decarboxylating C4-C28 fatty acids derived from sources selected based on their saturated and unsaturated fatty acid content in order to lower anodic passivation voltage during synthesis of C6-C54 hydrocarbons. The C6-C54 hydrocarbons may undergo olefin metathesis and/or hydroisomerization reaction processes to synthesize heavy fuel oil, diesel fuel, kerosene fuel, lubricant base oil, and linear alpha olefin products useful as precursors for polymers, detergents, and other fine chemicals. | 03-17-2016 |
20160145171 | Process For The Preparation Of Butadiene - The present invention relates to a gas-phase process for the preparation of butadiene comprising
| 05-26-2016 |
20160376206 | PROCESS FOR PRODUCING 1,3-BUTADIENE FROM A FEEDSTOCK COMPRISING ETHANOL - Production of 1,3-butadiene ethanol, that is more than 50% of the total weight of feedstock:
| 12-29-2016 |