| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 6837288 |
Composition for tire sidewalls and other rubber constructions |
January 4, 2005 |
| Rubber blends of brominated isobutylene/para-methylstyrene copolymers of 9.5 to 20 weight percent aromatic monomer content and 0.2 to 1.0 mole percent benzylic bromine content. The blends have good cure characteristics, good adhesion and flex crack resistance, as well as ozone resist |
| 6835363 |
Synthesis of molecular sieves of CHA framework type |
December 28, 2004 |
| The invention is directed to a method of synthesizing aluminophosphate and silicoaluminophosphate molecular sieves and in particular to the synthesis of aluminophosphate and silicoaluminophosphate molecular sieves using the synthesis templates that contain two dimethylamino moieties in c |
| 6833415 |
Continuous slurry polymerization process and appparatus |
December 21, 2004 |
| 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 |
| 6825391 |
Rejuvenating SAPO molecular sieve with anhydrous liquid or vapor |
November 30, 2004 |
| Disclosed is a method of rejuvenating a molecular sieve. The method includes contacting a molecular sieve having a methanol uptake of less than 1, or a catalyst containing molecular sieve having a methanol up of less than 1, with anhydrous liquid or vapor until the methanol uptake ra |
| 6825372 |
Metallocene compositions |
November 30, 2004 |
| This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula: ##STR1##wherein R.sup.9 and R.sup.11 are identical |
| 6825281 |
Thermoplastic compositions for halogenated elastomers |
November 30, 2004 |
| The invention provides a thermoplastic composition of C.sub.4-C.sub.7 isoolefin copolymers including halomethylstyrene derived units blended with a hindered amine or phosphine of the structure R.sub.1 R.sub.2 R.sub.3 N or R.sub.1 R.sub.2 R.sub.3 P wherein R.sub.1, R.sub.2 and R.sub.3 |
| 6824671 |
Low noack volatility poly .alpha.-olefins |
November 30, 2004 |
| The present invention relates to poly .alpha.-olefins (PAO's) which exhibit superior Noack volatility at low pour points. Mixtures of 1-decene and 1-dodecene are polymerized using an alcohol promoted BF.sub.3 in conjunction with a combination of cocatalysts. The reaction mixture is d |
| 6822057 |
Olefin polymerization catalysts derived from Group-15 cationic compounds and processes using the |
November 23, 2004 |
| Fluorinated amine compounds, R'.sub.i ArF--ER.sub.2, where ArF is a fluoroaryl substituent, E is nitrogen or phosphorous, each R is independently a C.sub.1 -C.sub.20 hydrocarbyl substituent, or the two R's may be connected to form an unsubstituted or substituted C.sub.2 -C.sub.20 cyc |
| 6821503 |
Molecular sieves and processes for their manufacture |
November 23, 2004 |
| Crystalline molecular sieve particles of a size suitable for use as seeds in molecular sieve manufacture are obtained by washing larger particle sized product to dislodge smaller particles from the larger. |
| 6818704 |
Plasticized polypropylene thermoplastics |
November 16, 2004 |
| The invention is directed to a plasticized polypropylene thermoplastic composition comprising a blend of A) from 50 to 99.9 wt % of a thermoplastic polymer derived from polypropylene, optionally with one or more copolymerizable monomer selected from C.sub.2 -C.sub.10 .alpha.-olefin o |
| 6818049 |
Environmentally preferred fluids and fluid blends |
November 16, 2004 |
| An industrial formulation-fluid system comprising one or more organic volatile formulation-fluids including a fluid F being a compound containing either an oxygen-containing or nitrogen-containing functional group and being substantially free from unsaturated carbon-carbon bonds or a |
| 6812373 |
Modified metalloaluminophosphate molecular sieves |
November 2, 2004 |
| The invention is directed to a method for modifying a microporous metalloaluminophosphate molecular sieve, the method comprising the steps of a) introducing a metal hydride compound within the cages of said microporous molecular sieve, and b) reacting said metal hydride compound with |
| 6812372 |
Silicoaluminophosphate molecular sieve |
November 2, 2004 |
| The present invention relates to a silicoaluminophosphate molecular sieve comprising at least one intergrown phase of molecular sieves having AEI and CHA framework types, wherein said intergrown phase has an AEI/CHA ratio of from about 5/95 to 40/60 as determined by DIFFaX analysis, usin |
| 6812184 |
Supported late transition metal catalyst systems |
November 2, 2004 |
| A late transition metal catalyst system for polymerization of olefin monomers is a Group 9, 10 or 11 metal complex stabilized by a bidentate ligand immobilized on a solid support where the late transition metal loading is less than 100 micromoles transition metal compound per gram of |
| 6812181 |
Coated zeolite catalysts and use for hydrocarbon conversion |
November 2, 2004 |
| There is provided a coated zeolite catalyst in which the accessibility of the acid sites on the external surfaces of the zeolite is controlled and a process for converting hydrocarbons utilizing the coated zeolite catalyst. The zeolite catalyst comprises core crystals of a first zeolite |
| 6811684 |
Hydrocarbon conversion process and catalyst useful therein |
November 2, 2004 |
| There is provided a process for converting hydrocarbons using a catalyst comprising macrostructures having a three-dimensional network of particles comprised of porous inorganic material. The particles of the macrostructures occupy less than 75% of the total volume of the macrostruct |
| 6809227 |
Method for increasing light olefin yield by conversion of a heavy hydrocarbon fraction of a prod |
October 26, 2004 |
| A method for increasing light olefin yield during conversion of oxygenates to olefins including contacting an oxygenate feed in a primary reactor with a non-zeolitic molecular sieve catalyst under first conditions effective to produce a first product comprising light olefins; separating |
| 6809209 |
Nitrogen-containing group-13 anionic compounds for olefin polymerization |
October 26, 2004 |
| The invention addresses an composition of matter comprising a cation [Ct].sup.+ and an anion [A].sup.-, the anion comprises a core Group-13 element bound to partially or completely fluorinated fluoroaryl ligands, at least one of the fluoroaryl ligands is substituted with a Group-15 e |
| 6809168 |
Articles formed from propylene diene copolymers |
October 26, 2004 |
| The co-polymerization reaction of one or more olefin monomers, such as propylene, with .alpha.,.omega.-diene units and the resulting copolymers are provided. More specifically, the copolymer may have from 90 to 99.999 weight percent of olefins and from 0.001 to 2.000 weight percent of |
| 6809057 |
Chromium compounds and olefin polymerization processes utilizing them |
October 26, 2004 |
| An olefin polymerization catalyst system, comprising a catalyst represented by the general formula CrR.sub.4, wherein each R is independently a hydrocarbyl or substituted hydrocarbyl, with the proviso that R may not be a cyclopentadienyl group, an activator represented by the general for |
| 6806336 |
Process for polymerizing ethylene, higher alpha-olefin comonomer and dienes, especially vinyl no |
October 19, 2004 |
| This invention relates to olefin polymerization processes for polymerizing ethylene, higher alpha-olefin comonomer and dienes, especially vinyl norbornene, and especially process for producing amorphous or semi-crystalline polymers such as EPDM. The invention also relates to the nove |
| 6806316 |
Propylene polymers for oriented films |
October 19, 2004 |
| This invention relates generally to crystalline polypropylene polymers and methods for their production. Specifically, this invention relates to crystalline polypropylene polymer compositions comprising both propylene homopolymers and propylene copolymers. The compositions are prepared u |
| 6806220 |
High activity carbenium-activated polymerization catalysts |
October 19, 2004 |
| This application discloses triphenyl carbenium NCA's as catalyst activators for a class of asymmetrically bridged hafnocene catalyst precursors. These catalyst precursors are activated into olefin polymerization catalysts and are suitable for gas, solution, and slurry-phase polymerizatio |
| 6803494 |
Process for selectively producing propylene in a fluid catalytic cracking process |
October 12, 2004 |
| A process for producing polypropylene from olefins selectively produced from a catalytically cracked or thermally cracked naphtha stream is disclosed herein. The naphtha stream is contacted with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having an averag |
| 6800704 |
Olefin polymerization process with alkyl-substituted metallocenes |
October 5, 2004 |
| The invention comprises an olefin polymerization process comprising contacting ethylene alone or with one or more olefinically unsaturated comonomers with a Group 3-6 metallocene catalyst compound comprising one .pi.-bonded ring having a C.sub.3 or greater hydrocarbyl, hydrocarbylsilyl |
| 6800698 |
Continuous slurry polymerization volatile removal |
October 5, 2004 |
| 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 |
| 6800692 |
Metallocene-produced very low density polyethylenes |
October 5, 2004 |
| The present invention provides a polymer blend suitable for use as a film or a coating, the polymer blend including from 1 to 99% by weight of a metallocene-produced VLDPE polymer having a density less than 0.916 g/cm.sup.3, and from 1 to 99% by weight of an LDPE polymer having a den |
| 6797852 |
Protecting catalytic activity of a SAPO molecular sieve |
September 28, 2004 |
| This invention is directed to a method of making an olefin product from an oxygenate feedstock and a method of protecting catalytic activity of a silicoaluminophosphate molecular sieve. The methods comprise providing a silicoaluminophosphate molecular sieve having catalytic sites within |
| 6797851 |
Two catalyst process for making olefin |
September 28, 2004 |
| This invention is to a process of making olefin, particularly ethylene and propylene, from an oxygenate feed. The invention uses two or more zeolite catalysts. Examples of zeolite catalysts include a first catalyst containing of ZSM-5, and a second catalyst containing a 10-ring molecular |
| 6797849 |
Xylene isomerization |
September 28, 2004 |
| A process for isomerizing xylenes in a feed containing xylenes is disclosed which process comprises: contacting the feed with a first isomerization catalyst in a first reactor under a first set of conditions effective to isomerize xylenes in the feed; and contacting the xylenes with a se |
| 6793901 |
Synthesis of molecular sieves having the CHA framework type |
September 21, 2004 |
| The invention is directed to a method for preparing microporous aluminophosphate or silicoaluminophosphate molecular sieves having the CHA framework type, the process comprising the steps of a) forming a reaction mixture comprising a source of aluminum, a source of phosphorus, option |
| 6787501 |
Molecular sieve catalyst composition, its making and use in conversion processes |
September 7, 2004 |
| 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 making a formulated molecular sieve catalyst |
| 6787023 |
Metal-containing macrostructures of porous inorganic oxide, preparation thereof, and use |
September 7, 2004 |
| There is provided a catalyst containing porous macrostructures comprised of: (a) a three-dimensional network of particles of porous inorganic material (e.g., zeolites); and, (b) at least one metal (e.g., a catalytically active metal). The particles of the at least one macrostructure |
| 6784330 |
Process for integrating a methanol conversion unit with an FCC unit |
August 31, 2004 |
| A process for treating methane-containing natural gas is provided which comprises: i) converting methane to methanol at or near a site of natural gas production; ii) transporting the methanol to a refinery remote from said site of production, said refinery producing ethylene and propylen |
| 6784269 |
Polypropylene compositions methods of making the same |
August 31, 2004 |
| This invention relates to propylene homopolymer compositions obtained from metallocene catalysis wherein the polymer has a molecular weight distribution (Mw/Mn) in the range of from 4.0 to 20.0. The propylene homopolymer composition may be prepared in a multiple stage polymerization |
| 6781025 |
Reactivation of aromatics alkylation catalysts |
August 24, 2004 |
| 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 |
| 6780936 |
Diene-modified propylene polymer nucleating agents |
August 24, 2004 |
| This invention relates to compositions derived from polyolefins combined with a polymeric nucleating agent. The nucleating agent is specifically a diene-propylene copolymer. |
| 6777585 |
Catalyst fines handling and disposal process |
August 17, 2004 |
| 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. |
| 6774256 |
Low corrosive integrated process for preparing dialkyl carbonates |
August 10, 2004 |
| An integrated process for the production of a dialkyl carbonate and a diol from an alkylene oxide, carbon dioxide and an aliphatic monohydric alcohol is described in which an alkylene oxide is first reacted with carbon dioxide in the presence of a halogen-free carbonation catalyst to pro |
| 6774191 |
Propylene polymers incorporating polyethylene macromers |
August 10, 2004 |
| A polyolefin product is provided which comprises a branched olefin copolymer having an syndiotactic polypropylene backbone, polyethylene branches and, optionally, one or more comonomers. The total comonomer content of the branched olefin copolymer is from 0 to 20 mole percent. Also, |
| 6773688 |
Process for manufacture of molecular sieves |
August 10, 2004 |
| Small particle size silicoaluminophosphate molecular sieves are obtained by providing the source of the silicon in the form of a basic organic solution. |
| 6770792 |
Xylene isomerization |
August 3, 2004 |
| A xylene isomerization process is disclosed in which any ethylbenzene in the feed is removed, either by dealkylation or isomerization, in a separate reactor upstream of the xylene isomerization reactor and the xylene isomerization catalyst is contained in the same reactor, typically |
| 6770791 |
Production of olefin dimers and oligomers |
August 3, 2004 |
| Disclosed is an olefin containing stream from an oxygenate to olefin process, and a process for making olefin dimer and oligomer product from the olefin containing stream using a nickel based oligomerization catalyst. The dimer/oligomer product is optionally converted to hydroformyla |
| 6768036 |
Method for adding heat to a reactor system used to convert oxygenates to olefins |
July 27, 2004 |
| The present invention provides a method for adding heat to a reactor system used to convert oxygenates to olefin, in which supplemental heat is added with a heating fuel, e.g., a torch oil, having low autoignition temperature, low sulfur, and low nitrogen content. |
| 6768034 |
Catalytic production of olefins at high methanol partial pressures |
July 27, 2004 |
| Disclosed is a catalytic method for operating an oxygenate to olefins conversion reaction to provide a substantial quantity of prime olefin in the product. The product is provided by operating within desired parameters of weight hourly space velocity and oxygenate partial pressure. O |
| 6767858 |
Synthesis of alumino- and silicoalumino-phosphates of CHA framework type |
July 27, 2004 |
| The invention is directed to a method of synthesizing aluminophosphate and silicoaluminophosphate molecular sieves and in particular to the synthesis of aluminophosphate and silicoaluminophosphate molecular sieves using N-methylethanolamine as template with or without a source of fluorid |
