| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 585520000 |
Using extraneous nonhydrocarbon agent, e.g., catalyst, etc.
| 65 |
| 585510000 |
Definite molecular weight product, e.g., dimer, etc.
| 65 |
| 585506000 |
Poly-double-bond product
| 12 |
| 585518000 |
With preliminary treatment of feed
| 8 |
| 585504000 |
With specified procedure for recycle of nonhydrocarbon | 5 |
| 20100137668 | OLIGOMERIZATION PROCESS - A process for oligomerizing isoolefins, the process including: feeding an isoolefin to an oligomerization reaction zone; feeding an oxygen-containing reaction moderator to the oligomerization reaction zone; concurrently in the oligomerization reaction zone: contacting the isoolefin with an oligomerization catalyst to convert at least a portion of the isoolefin to oligomers comprising dimers and trimers of the isoolefin; reacting a portion of the moderator with a portion of at least one of the isoolefin and the oligomers to form an oxygenated oligomerization byproduct; recovering an effluent from the oligomerization reaction zone comprising the oligomers and the oxygenated oligomerization byproduct; fractionating at least a portion of the effluent to recover a fraction comprising the oxygenated oligomerization byproduct and the trimers and a fraction comprising the dimers. | 06-03-2010 |
| 20120149961 | PROCESS FOR SEPARATING AT LEAST ONE OLIGOMERIZED EFFLUENT - One exemplary embodiment can be a process for separating at least one oligomerized effluent. The process can include providing an effluent from at least one of a first oligomerization zone for producing at least one of a C9 and a C12 hydrocarbon and a second oligomerization zone for producing at least one of a C8 and a C12 hydrocarbon, providing at least a portion of the effluent to a separation zone, and providing at least one stream from the separation zone to a hydrotreatment zone. | 06-14-2012 |
| 20130172650 | UPGRADING LIGHT OLEFINS - Methods and systems relate to upgrading light olefins, such as ethylene, propylene and butylenes, diluted in a gas mixture, such as refinery fuel gas. The upgrading yields products in a gasoline, distillate, lube oil or wax range without requiring purification or compression of the gas mixture prior to feeding the gas mixture to a reactor. In operation, the mixture contacts a solid oligomerization catalyst, such as silica supported chromium, within the reactor. This contact occurs at a first temperature suitable to produce oligomers that are formed of the olefins and adsorb on the catalyst in liquid or solid phases. Next, heating the catalyst to a second temperature higher the first temperature desorbs the oligomers that are recovered and separated into the products. | 07-04-2013 |
| 20130274533 | PROCESS TO REMOVE DISSOLVED AlCl3 FROM IONIC LIQUID - Disclosed herein are processes in which precipitation permits removal of metal halides (e.g. AlCl | 10-17-2013 |
| 20130303817 | Ethylene Oligomerization Process - An ethylene oligomerization system is useful for creating 1-butene from ethylene in the presence of an ethylene oligomerization catalyst. The ethylene oligomerization system includes an internal baffle single pass reactor, a separation system and an exterior motion driver. The exterior motion driver is operable to induce unsteadiness in the flow of the process fluid contained in the internal baffle single pass reactor by transferring motion into the process fluid. An ethylene oligomerization process is useful for creating a refined 1-butene product from ethylene using the ethylene oligomerization system. | 11-14-2013 |
| 585503000 |
With heat conservation or using apparatus of recited composition | 3 |
| 20090221862 | Oligomerisation of Olefins - Olefin feeds with high olefin content and/or containing a substance that generates water when contacting the catalyst, are oligomerised over solid phosphoric acid catalyst in tubular reactors by introducing the olefin feed into the reactor and maintaining the reacting mixture under conditions whereby the peak temperature is controlled to be below 265° C. and preferably a single liquid or dense phase is maintained and the average temperature throughout the reactor is maintained in the range 190° C. to 260° C. | 09-03-2009 |
| 20130079574 | OLIGOMERIZATION PROCESS - One exemplary embodiment can be a process for oligomerizing one or more hydrocarbons. The process can include oligomerizing a feed including one or more C3-C5 hydrocarbons to produce an effluent, and recycling at least a portion of the effluent for oligomerizing. Typically, the recycled portion has at least about 50%, by weight, one or more alkenes based on the weight of the recycled portion. | 03-28-2013 |
| 20150011814 | COOLING BETWEEN MULTIPLE POLYOLEFIN POLYMERIZATION REACTORS - A system and method for a first reactor to produce a transfer slurry having a first polyolefin polymerized in the first reactor, a heat-removal zone to remove heat from the transfer slurry, and a second reactor to receive the transfer slurry cooled by the heat-removal zone, the second reactor to produce a product slurry having a product polyolefin which includes the first polyolefin and a second polyolefin polymerized in the second reactor. | 01-08-2015 |
| 585517000 |
Plural serial polymerization stages | 1 |
| 20090209797 | Process for the preparation of alpha-olefin oligomers - A process for the preparation of linear α-olefin oligomers comprising: providing a cascade of at least 3 reaction vessels connected in series, and adding at least one solvent, at least one homogeneous oligomerization catalyst and ethylene the first reaction vessel, then conducting an oligomerization reaction in the first reaction vessel for a period of time sufficient to start α-olefin formation, thereafter transferring at least a part of the content of the first reaction vessel to a second reaction vessel with or without additional ethylene, then conducting the oligomerization reaction in the reaction vessel for a second period of time sufficient to continue α-olefin formation, then transferring at least a part of the content of the second reaction vessel to the next reaction vessel in the cascade with or without additional ethylene and then conducting the oligomerization reaction in that reaction vessel for a period of time sufficient to continue α-olefin formation, and isolating linear α-olefin oligomers from the last reaction vessel. | 08-20-2009 |
| Entries |
| Document | Title | Date |
|---|
| 20080200743 | Methods For Oligomerizing Olefins With Chromium Pyridine Ether Catalysts - The present invention provides a method of producing oligomers of olefins, comprising reacting olefins with a catalyst under oligomerization conditions. The catalyst can be the product of the combination of a chromium compound and a pyridyl ether compound. In particular embodiments, the catalyst compound can be used to trimerize or tetramerize ethylene to 1-hexene, 1-octene, or mixtures of 1-hexene and 1-octene. | 08-21-2008 |
| 20080228020 | Method for Converting Ethylene Into Propylene - The invention relates to a method for converting ethylene into propylene consisting in reacting said ethylene with a supported metal compound comprising an aluminium oxide based support to which a tungsten hydride is grafted. Said reaction is carried out at a temperature ranging from 20 to 600° C., preferably between 50 and 350° C., at an absolute pressure ranging from 0.01 to 8 MPa, preferably between 0.01 and 1 MPa. A catalyst is regeneratable by introducing hydrogen at a temperature of 50-300° C. | 09-18-2008 |
| 20090062586 | Gas-phase fluidized-bed reactor, multivessel polymerization reactor and process for producing olefin polymer - The gas-phase fluidized-bed reactor conducting reaction by feeding a gas, through a gas-distribution plate located at the lower part of a reaction vessel, into a fluidized bed formed on the gas-distribution plate, wherein the reaction vessel is made up so as to have a narrowed part at a specified position of the gas flow passage above the gas-distribution plate, and the fluidized bed is formed in the area from below the narrowed part to above the narrowed part. The gas-phase fluidized bed rector of the present invention allows manufacturing polymers having excellent homogeneity of polymer structure in gas-phase polymerization. | 03-05-2009 |
| 20110172482 | CATALYST BASED ON A CRYSTALLIZED MATERIAL WITH HIERARCHIZED AND ORGANIZED POROSITY AND ITS USE IN OLIGOMERIZATION OF LIGHT OLEFINS - A catalyst that comprises at least one binder and at least one crystallized material with hierarchized and organized porosity in the fields of microporosity and mesoporosity is described, whereby said crystallized material consists of at least two elementary spherical particles, each of said particles comprising a mesostructured silicon-oxide-based matrix that has a mesopore diameter of between 1.5 and 30 nm and that has microporous and crystallized walls with a thickness of between 1 and 60 nm, whereby said elementary spherical particles have a maximum diameter of 200 microns. Said catalyst is used in a process for oligomerization of an olefinic feedstock that contains hydrocarbon molecules that have 2 to 12 carbon atoms per molecule. | 07-14-2011 |
| 20120004489 | POLYOLEFIN MANUFACTURING SYSTEM INCLUDING A MEMBRANE FRACTIONATION SYSTEM FOR DILUENT RECOVERY - A fractionation system for a polymerization reactor includes a membrane separation system designed to separate light components, such as unreacted monomer and inerts, from diluent. The membrane separation system may employ one or more membrane modules designed to separate hydrocarbons based on size, solubility, or combinations thereof. The fractionation system also may include a heavies fractionation column designed to separate heavy components, such as unreacted comonomer and oligomers, from the diluent. | 01-05-2012 |
