| Patent Number |
Title Of Patent |
Date Issued |
| 6890171 |
Apparatus for optimizing burner performance |
May 10, 2005 |
| An improved burner and a method for combusting fuel in burners used in furnaces such as those found in steam cracking. The burner includes a burner tube having a downstream end and an upstream end for receiving fuel and air, flue gas or mixtures thereof, a fuel orifice located adjacent t |
| 6888037 |
Process for producing cumene |
May 3, 2005 |
| A process for producing cumene is provided which comprises the step of contacting benzene and propylene under at least partial liquid phase alkylating conditions with a particulate molecular sieve alkylation catalyst, wherein the particles of said alkylation catalyst have a surface t |
| 6888035 |
Hydrogenation of cleavage effluents in phenol production |
May 3, 2005 |
| A method for producing phenol is disclosed which includes oxidizing cumene to form cumene hydroperoxide and acid cleavage to form cumene, phenol, acetone, and various byproducts, including alpha methylstyrene, followed by a subsequent hydrogenation of at least a part of the acetone and |
| 6888017 |
Metallocene compositions |
May 3, 2005 |
| This invention relates to bridged indenyl metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The bridge may be represented by the formula: ##STR1##wherein: R.sup.17 to R.sup.24 are identical |
| 6887305 |
Release agent and uses for same |
May 3, 2005 |
| A release agent for use in imaging systems having hot a fuser roller wherein the release agent is a hydrocarbon. |
| 6887068 |
Centering plate for burner |
May 3, 2005 |
| A burner for use in furnaces such as in steam cracking. The burner includes a burner tube having a downstream end and an upstream end. A burner tip is mounted on the burner tube adjacent a first opening in the furnace, so that combustion of the fuel takes place downstream of the burner t |
| 6884916 |
Conversion of unsaturated chemicals to oligomers |
April 26, 2005 |
| An oligomerization process in which hydrocarbon feedstocks are contacted with a hydrotreating catalyst in the absence of hydrogen and in the liquid phase. The catalyst is a heterogeneous catalyst selected from supported reduced metals, metals oxides, metal sulfides and combinations there |
| 6884914 |
Olefin oligomerization |
April 26, 2005 |
| This invention is to a method of oligomerizing an olefin feed stream. The olefin feed stream contains at least one C.sub.2 to C.sub.12 olefin to obtain an olefin feed stream and has less than 1,000 ppm by weight oxygenated hydrocarbon. The olefin is oligomerized by contacting with an |
| 6884863 |
Catalyst fines handling and disposal process |
April 26, 2005 |
| The present invention is directed to a process for handling and/or disposing catalyst fines produced in an oxygenate-to-olefins reactor. The process enhances the way catalyst fines are separated from the liquid fraction by use of a flocculent. |
| 6884850 |
Graft-modified polymers based on novel propylene ethylene copolymers |
April 26, 2005 |
| Propylene ethylene copolymers with an ethylene content between 8 and 32 mole % have been grafted with maleic anhydride and a peroxide. The functionality level is higher than what is reported with polypropylene. |
| 6884062 |
Burner design for achieving higher rates of flue gas recirculation |
April 26, 2005 |
| A burner for use in furnaces such as in steam cracking. The burner includes a primary air chamber; a burner tube including (i) a downstream end, (ii) an upstream end in fluid communication with the primary air chamber, and (iii) a burner tip mounted on the downstream end of the burner tu |
| 6881859 |
Trialkyl acetic acid (neo acid) esters and esterification process |
April 19, 2005 |
| Disclosed is a method of making trialkyl acetic acid ("neo acid") esters and a neo acid ester composition. Neo acid esters are made by contacting a neo acid stream, comprising a mixture of neo acids, with alcohol in the presence of a catalyst. The invention has the benefit of providing a |
| 6881800 |
Processes and apparatus for continuous solution polymerization |
April 19, 2005 |
| The invention relates to processes and plants for continuous solution polymerization. Such plant and processes include a pressure source, a polymerization reactor, downstream of said pressure source, pressure let-down device, downstream of said polymerization reactor, and a separator |
| 6881053 |
Burner with high capacity venturi |
April 19, 2005 |
| An improved burner and a method for combusting fuel in burners used in furnaces, such as those used in steam cracking, are disclosed. The burner includes a burner tube having an upstream end, a downstream end and a venturi intermediate said upstream and downstream ends, the venturi i |
| 6878855 |
Process for producing para-xylene |
April 12, 2005 |
| A process and a system for increasing para-xylene production from a C.sub.8 aromatic feedstream by coupling at least one xylene isomerization reactor with at least one pressure swing adsorption unit or temperature swing absorption unit to produce a product having a super-equilibrium |
| 6878654 |
Reactivation of aromatics alkylation catalysts |
April 12, 2005 |
| The present invention provides a process for regenerating a spent aromatics alkylation or transalkylation catalyst comprising a molecular sieve by contacting the spent catalyst with an oxygen-containing gas at a temperature of about 120 to about 600.degree. C. and then contacting the |
| 6877980 |
Burner with low NOx emissions |
April 12, 2005 |
| A burner for use in furnaces such as in steam cracking. The burner includes a primary air chamber; a burner tube having an upstream end, a downstream end and a venturi intermediate said upstream and downstream ends, said venturi including a throat portion having substantially constant in |
| 6875899 |
Production of higher olefins |
April 5, 2005 |
| A method of making a higher olefin product from a C.sub.4.sup.+ fraction separated from the hydrocarbon product produced by an oxygenate to olefin reaction unit. The C.sub.4.sup.+ fraction primarily contains butenes which may be directed to a higher olefin reaction unit without removing |
| 6875813 |
Isobutylene-based elastomer blends |
April 5, 2005 |
| The improved green strength, green elongation, and green relaxation properties of isobutylene-based elastomers at elevated temperatures along with improved aging and barrier properties are achieved by blending semi-compatible, semi-crystalline copolymers with the isobutylene elastome |
| 6872680 |
Molecular sieve catalyst composition, its making and use in conversion processes |
March 29, 2005 |
| The invention relates to a molecular sieve catalyst composition, to a method of making or forming the molecular sieve catalyst composition, and to a conversion process using the catalyst composition. In particular, the invention is directed to a making a molecular sieve catalyst composit |
| 6870072 |
Heat recovery in an olefin production process |
March 22, 2005 |
| Disclosed is a process for recovering heat in an oxygenate to olefin ("OTO") production process. The process includes removing heat while maintaining the temperature of an effluent stream that comprises solid particles (typically catalyst particles) and a gas phase comprising prime o |
| 6870023 |
Reactor wall coating and processes |
March 22, 2005 |
| Reactor wall coatings for polymerization reactors and processes for forming such coatings are disclosed. The reactor wall coatings can have a thickness of at least 100 .mu.m and a molecular weight distribution including a major peak having one or more of an Mw/Mn ratio of less than 1 |
| 6870016 |
Polymerization process and polymer composition |
March 22, 2005 |
| Olefin polymerization processes using catalyst systems based on metallocenes and olefin, in particular, propylene polymers obtainable thereby. The metallocenes may be represented by the formula:##STR1##wherein M.sup.1 preferably is zirconium or hafnium; and R.sup.12 is different from hyd |
| 6869917 |
Functional fluid lubricant using low Noack volatility base stock fluids |
March 22, 2005 |
| The present invention relates to a fully formulated lubicants comprising poly .alpha.-olefins (PAOs), prepared from a mixed .alpha.-olefin feed, which exhibit superior Noack volatility at low pour points, and methods for preparing the fully formulated lubricants. The fully formulated |
| 6869587 |
Crystalline molecular sieve composition MCM-65, its synthesis and use |
March 22, 2005 |
| This invention relates to a novel synthetic porous crystalline molecular sieve material, MCM-65, to a reaction mixture and method for its preparation, and to use of the MCM-65 in catalytic conversion of organic compounds. The crystalline material exhibits a distinctive X-ray diffract |
| 6869277 |
Burner employing cooled flue gas recirculation |
March 22, 2005 |
| A method and apparatus for use in burners of furnaces such as those used in steam cracking. The apparatus includes a burner tube having a burner tip mounted on the downstream end of the burner tube adjacent to a first opening in the furnace, so that combustion of the fuel takes place |
| 6867267 |
Petroleum resins and their production with BF3 catalyst |
March 15, 2005 |
| Petroleum resins are produced using a supported BF.sub.3 cocatalyst complex. Preferably the cocatalyst is organic such as an alcohol or a carboxylic acid. Use of the catalyst in supported form together with the cocatalyst enables control over both Bronsted and Lewis acidity leading to |
| 6867260 |
Elastic blends comprising crystalline polymer and crystallizable polymers of propylene |
March 15, 2005 |
| Improved thermoplastic polymer blend compositions comprising an isotactic polypropylene component and an alpha-olefin and propylene copolymer component, said copolymer comprising crystallizable alpha-olefin sequences. In a preferred embodiment, improved thermoplastic polymer blends a |
| 6866502 |
Burner system employing flue gas recirculation |
March 15, 2005 |
| System for reducing NO.sub.x emissions from burners of furnaces such as those used in steam cracking. The system includes a furnace having at least one burner, the at least one burner including a primary air chamber; a burner tube including a downstream end, an upstream end in fluid |
| 6864401 |
Heat-integrated high pressure system for separation of byproducts from an olefin stream |
March 8, 2005 |
| The present invention is a heat-integrated process for obtaining an ethylene and propylene enriched stream from an oxygenate to olefin reactor. The process comprises providing an effluent stream from an oxygenate to olefins reactor. The effluent stream comprises ethylene, propylene a |
| 6864203 |
Aromatic conversion processes and zeolite catalyst useful therein |
March 8, 2005 |
| A process is provided for the alkylation, transalkylation, or isomerization of aromatic hydrocarbons. The processes comprises contacting aromatic hydrocarbons under conversion conditions with a zeolite bound zeolite catalyst. The zeolite bound zeolite catalyst comprises first crystals of |
| 6858690 |
Process for polymerizing cationically polymerizable monomers |
February 22, 2005 |
| The invention relates to a new catalyst system that improves the heat transfer capability of a butyl reactor slurry process system in the production of isobutylene-based polymers in continuous slurry polymerization processes. The process is carried out in an anhydrous polymerization |
| 6858682 |
Continuous slurry polymerization volatile removal |
February 22, 2005 |
| A process/apparatus is disclosed for continuously separating a liquid medium comprising diluent and unreacted monomers from a polymerization effluent comprising diluent, unreacted monomers and polymer solids, comprising a continuous discharge of the polymerization effluent from a slu |
| 6858129 |
Tailored zeolite bound zeolite catalysts and its use for hydrocarbon conversion |
February 22, 2005 |
| There is provided a zeolite bound zeolite catalyst which does not contain significant amount of non-zeolitic binder and can be tailored to optimize its performance and a process for converting hydrocarbons utilizing the zeolite bound zeolite catalyst. The zeolite bound zeolite catalyst |
| 6858049 |
Method for utilizing gas reserves with low methane concentrations for fueling gas turbines |
February 22, 2005 |
| The invention is directed to a method of fueling gas turbines from natural gas reserves with relatively low methane concentrations. The invention permits the use of such reserves to be used to fuel gas turbines to generate electric power. The method of the invention includes providing a |
| 6855858 |
Method of removing dimethyl ether from an olefin stream |
February 15, 2005 |
| This invention is directed to a method of removing dimethyl ether from an olefin stream. The method includes distilling the olefin stream so that the dimethyl ether is separated out of the olefin stream with propane. The olefin stream can then be further distilled to provide a polymer gr |
| 6852424 |
Polymer composite structure |
February 8, 2005 |
| Two-component polymer composite structures are described, such as a composite structure that includes a first polymer structure and a second polymer structure adhered to one another through interfacial adhesion provided by a semicrystalline random copolymer with 70-88 mole % propylene |
| 6846966 |
Method and apparatus for treating oxygenate-containing feeds and their use in conversion of oxyg |
January 25, 2005 |
| 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 reduced in non-vola |
| 6846770 |
Highly active supported catalyst compositions |
January 25, 2005 |
| This invention relates to metallocene catalyst compositions which are highly active for the polymerization of olefins, particularly prochiral .alpha.-olefins. The catalyst compositions contain at least one metallocene, and least one activator and a support that has been fluorided usi |
| 6846405 |
Circulating fluid bed reactor system |
January 25, 2005 |
| This invention is to a circulating fluid bed reactor that is designed so as to have the ability to adjust catalyst holdup within the reaction zone of the reactor while maintaining substantially constant catalyst circulation rate through the reaction zone. The ability to adjust catalyst h |
| 6846175 |
Burner employing flue-gas recirculation system |
January 25, 2005 |
| A method and apparatus for reducing the temperature of the recirculated flue gas in a flue gas recirculation duct for burners in industrial furnaces such as those used in steam cracking. The apparatus includes a burner tube having a downstream end and an upstream end for receiving air, |
| 6844480 |
Method of separating dimethyl ether from an olefin stream |
January 18, 2005 |
| This invention is directed to a method of removing dimethyl ether from an olefin stream. Dimethyl ether is removed from the olefin stream by first separating the olefin stream into a first stream comprising dimethyl ether and lighter boiling point compounds, and a second stream comprisin |
| 6844476 |
Process to control conversion of C4+ and heavier stream to lighter products in oxygenate convers |
January 18, 2005 |
| A method for converting heavy olefins present in a product stream exiting a first reaction zone into light olefins and carbonaceous deposits on a catalyst without separation of the heavy olefins from the product stream exiting the first reaction zone. The method comprises creating the pr |
| 6844291 |
Molecular sieve compositions, catalyst thereof, their making and use in conversion processes |
January 18, 2005 |
| The invention relates to a catalyst composition, a method of making the same and its use in the conversion of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene. The catalyst composition comprises a molecular sieve and at |
| 6843292 |
Thermoplastic blend |
January 18, 2005 |
| The invention generally relates to thermoplastic blends having improved properties. Optionally, these blends may be dynamically vulcanized. More specifically, this invention is directed to a composition comprising a blend of chloromethylated(styrene-isobutylene) polymer and a thermoplast |
| 6841510 |
Treatment of molecular sieves with silicon containing compounds |
January 11, 2005 |
| This invention is directed to a molecular sieve composition or a catalyst containing molecular sieve which has a relatively high residual silica index, preferably at least about 1.5. The molecular sieve or catalyst can be made by contacting a template-containing molecular sieve with a si |
| 6838587 |
Method of removing oxygenate contaminants from an olefin stream |
January 4, 2005 |
| This invention is directed to a method of removing acetaldehyde, CO.sub.2 and/or water from an ethylene and/or propylene containing stream. In this invention, acetaldehyde and C.sub.4 + olefins are substantially removed from the ethylene and/or propylene containing stream. The stream is |
| 6838586 |
Process for the synthesis of silicoaluminophosphate molecular sieves |
January 4, 2005 |
| The invention is directed to a method for making a silicoaluminophosphate (SAPO) molecular sieve from a reaction mixture comprising components present in amounts sufficient to form the SAPO, the reaction mixture having a first pH. The method comprises the steps of: adding an acid to |
| 6838532 |
Method for transitioning from a catalyst to an incompatible catalyst in a gas-phase reactor |
January 4, 2005 |
| The present invention is a process for transitioning from a first polymerization catalyst system to a second polymerization catalyst system incompatible with the first polymerization catalyst system in a gas-phase reactor. The novel process comprises conducting a first polymerization |
| 6838411 |
Olefin polymerization catalysis with aryl substituted carbenium cationic complexes |
January 4, 2005 |
| This description addresses a process for the preparation of polyolefins from one or more olefinic monomers comprising combining under polymerization conditions said olefins with the product of combining i) an organometallic catalyst compound and ii) a cocatalyst complex comprising a |
