| Patent Number |
Title Of Patent |
Date Issued |
| 6660682 |
Method of synthesizing molecular sieves |
December 9, 2003 |
| The invention is directed to a method of synthesizing a molecular sieve. In particular, the invention is directed to a method for synthesizing a molecular sieve, especially a silicoaluminophosphate molecular sieve, in the presence of a templating agent and a polymeric base. The invention |
| 6657022 |
Inhibiting catalyst coke formation in the manufacture of an olefin |
December 2, 2003 |
| Disclosed is a method for inhibiting catalyst coke formation in the manufacture of an olefin. In particular, the method inhibits coke formation on a silicoaluminophosphate molecular sieve catalyst in the manufacture of ethylene and/or propylene. The method includes contacting an oxyg |
| 6656345 |
Hydrocarbon conversion to propylene with high silica medium pore zeolite catalysts |
December 2, 2003 |
| The invention provides a method for converting a hydrocarbon feedstock to propylene comprising: contacting an olefinic hydrocarbon feedstock boiling in the naphtha range with a catalyst comprising a zeolitic catalyst selected from the group consisting of medium pore zeolites having a rat |
| 6653518 |
Reforming process for manufacture of para-xylene |
November 25, 2003 |
| A process for selectively producing para-xylene from a feedstock enriched in C.sub.8 isoalkanes and/or isoalkenes is disclosed. The feed is contacted with Group VIII metal loaded molecular sieve catalyst of low acidity under dehydrocyclization conditions wherein the molecular sieve h |
| 6646067 |
Petroleum resins and their production with BF3 catalyst |
November 11, 2003 |
| 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 |
| 6645370 |
Preparation of high silica zeolites bound by zeolite and use thereof |
November 11, 2003 |
| This invention relates to a process for producing zeolite-bound high silica zeolites and the use of the zeolite-bound high silica zeolite produced by the process for hydrocarbon conversion. The process is carried out by forming an extrudable paste comprising a mixture of high silica zeol |
| 6642407 |
Production, purification and polymerization of aromatic dicarboxylic acids |
November 4, 2003 |
| This invention provides a process for purifying the crude aromatic dicarboxylic acids produced by oxidation of dialkyl aromatic hydrocarbons and for using the purified acids in the preparation of polyethylene terephthalate, polyethylene naphthalate and other polyesters. The invention |
| 6642316 |
Elastic blends comprising crystalline polymer and crystallizable polym |
November 4, 2003 |
| 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 |
| 6642279 |
Carbon dioxide recovery in an ethylene to ethylene oxide production process |
November 4, 2003 |
| Disclosed is a method for recovering carbon dioxide from an ethylene oxide production process and using the recovered carbon dioxide as a carbon source for methanol synthesis. More specifically, carbon dioxide recovered from an ethylene oxide production process is used to produce a synga |
| 6639117 |
Rejuvenating SAPO molecular sieve by freeze drying |
October 28, 2003 |
| Disclosed is a method of rejuvenating molecular sieve and molecular sieve catalyst. The method includes freeze drying a molecular sieve having a methanol conversion ratio of less than 1, or a catalyst containing molecular sieve and a binder having a methanol conversion ratio of less |
| 6639020 |
Plasticized polypropylene thermoplastics |
October 28, 2003 |
| 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 |
| 6638887 |
Monocyclopentadienyl metal compounds for ethylene-.alpha.-olefin-copolymer production catalysts |
October 28, 2003 |
| Described are certain monocyclopentadienyl Group IV B metal compounds, catalyst systems comprising such monocyclopentadienyl metal compounds and an activator, and a process using such catalyst systems for the production of polyolefins, particularly high molecular weight ethylene-.alpha.- |
| 6632971 |
Process for converting natural gas to higher value products using a methanol refinery remote fro |
October 14, 2003 |
| 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 |
| 6632898 |
Monocyclopentadienyl titanium metal compounds for ethylene-.alpha.-olefin-copolymer production c |
October 14, 2003 |
| The invention is a catalyst system including a monocyclopentadienyl titanium compound and an alumoxane component which is highly productive for polymerizing ethylene and .alpha.-olefins to produce a high molecular weight ethylene-.alpha.-olefin copolymer having a high content of .alp |
| 6627723 |
Adhesive alpha-olefin inter-polymers |
September 30, 2003 |
| The invention relates to novel adhesive alpha-olefin inter-polymers which are largely amorphous and have a rheological behavior that makes them suitable for adhesive use, both without and with minimized amounts of tackifying resins. Specifically, the invention poly-alpha olefin inter |
| 6627678 |
Road marking compound comprising linear tetrablock copolymers |
September 30, 2003 |
| This invention relates generally to linear tetrablock copolymer compositions and their use in road marking applications. These tetrablock copolymers contain polystyrene, polyisoprene and polybutadiene components. Road marking compounds prepared from these copolymers further contain a |
| 6627577 |
Hydrocarbon conversion catalyst and its use |
September 30, 2003 |
| There is provided catalysts and conversion processes for converting hydrocarbons using the catalysts. The catalysts comprises a first alumino-phosphospho-molecular sieves and a binder comprising a second alumino-phopho-molecular sieves. Exemplary conversion processes include the conv |
| 6627068 |
Fluidized bed reactor and process |
September 30, 2003 |
| The present invention is directed to a continuous process for producing a desired hydrocarbon product using a heterogeneous slurry catalyst, to the product of said process, and to the reactor utilized in such process. |
| 6626219 |
Inner tube compositions having improved heat resistance characteristics |
September 30, 2003 |
| Halogenated isobutylene-co-paramethylstyrene polymer, preferably brominated isobutylene-co-paramethylstyrene polymer (BIMS) and blends thereof, preferably blends of isobutylene based rubber, show improved heat resistance versus butyl inner tube compositions and retain the superior ba |
| 6624235 |
Transparent and colorable elastomeric compositions |
September 23, 2003 |
| Transparent and colorable elastomeric compositions are provided. The transparent elastomeric compositions can be covulcanized with rubbers such as polybutadiene, polyisoprene, styrene-butadiene rubber, styrene-isoprene-butadiene rubber, isoprene-butadiene rubber, ethylene-propylene d |
| 6624220 |
Transparent and colorable elastomeric compositions |
September 23, 2003 |
| Transparent and colorable elastomeric compositions are provided. The transparent elastomeric compositions can be covulcanized with rubbers such as polybutadiene, polyisoprene, styrene-butadiene rubber, styrene-isoprene-butadiene rubber, isoprene-butadiene rubber, ethylene-propylene d |
| 6620983 |
Synthesis of aluminophosphates and silicoaluminophosphates |
September 16, 2003 |
| The invention is directed to a method of synthesizing aluminophosphate or silicoaluminophosphate molecular sieves and in particular to the synthesis of silicoaluminophosphate molecular sieves using synthesis templates in combination with a source of fluoride comprising at least two fluor |
| 6620959 |
Process for the production of unsymmetric and/or symmetric dialkyl carbonates and diols |
September 16, 2003 |
| A process for the production of a dialkyl carbonate and a diol, such as dimethyl carbonate and ethylene glycol, by reacting a feed containing a cyclic carbonate, a hydroxy alkyl carbonate and an aliphatic monohydric alcohol in the presence of a transesterification catalyst is described. |
| 6620958 |
Use of membranes to separate organic liquids having different polarities |
September 16, 2003 |
| A method for separating at least one lower polarity fluid from a mixture of fluids having varying polarity, comprising contacting at least one low polarity or non-polar polymeric membrane with the mixture of fluids under conditions such that the at least one lower polarity fluid selectiv |
| 6620898 |
Production of polyisobutylene copolymers |
September 16, 2003 |
| The invention relates to a new improved catalyst to produce random copolymers of one or more iso-olefin monomers and one or more para-alkylstyrene monomers. The invention also relates to an improved continuous slurry polymerization process to produce random copolymers using the impro |
| 6617482 |
Removable of polar contaminants from aromatic feedstocks |
September 9, 2003 |
| A process is described for removing polar compounds from an aromatic feedstock which contains polar compounds and which is then used in an alkylation process. The process comprises contacting the feedstock in an adsorption zone at a temperature of less than or equal to 130.degree. C. |
| 6617466 |
Monocylopentadienyl transition metal olefin polymerization catalysts |
September 9, 2003 |
| The invention is a catalyst system including a Group IV B transition metal component and an alumoxane component which may be employed to polymerize olefins to produce a high molecular weight polymer. |
| 6613950 |
Stripping hydrocarbon in an oxygenate conversion process |
September 2, 2003 |
| A process for method for the production of olefin product from an oxygenate-containing feedstock includes exposing a silicoaluminophosphate catalyst to an oxygenate-containing feedstock in a reaction zone under conditions effective to convert the oxygenate-containing feedstock to an |
| 6613723 |
Overbased barium complexes of C8 to C10 carboxylic acids |
September 2, 2003 |
| The present invention provides a process for preparing an overbased barium complex and an overbased barium complex prepared thereby. The process includes the steps of: heating a mixture of barium hydroxide monohydrate and an isomeric mixture of from about C.sub.10 to about C.sub.15 alcoh |
| 6613708 |
Catalyst selectivation |
September 2, 2003 |
| It has been discovered that catalysts may be modified by depositing an agent derivative from an agent such as an organometallic compound upon them. Such a modification gives a catalyst useful in increased selectivity to para-substituted alkyl benzenes, such as para-xylene (PX), through |
| 6608000 |
Polymerization catalysts, their production and use |
August 19, 2003 |
| The invention generally relates to a metallocene-based, olefin polymerization catalyst system. The easily processible polymer product has a broad molecular weight distribution, a high molecular weight, and a narrow composition distribution. The catalyst system comprises a first compo |
| 6605749 |
Synthesis of molecular sieve catalysts |
August 12, 2003 |
| Disclosed is a molecular sieve catalyst which contains molecular sieve-containing attrition particles and virgin molecular sieve, the attrition particles having been recycled from a catalyst manufacture process or from a reaction system. The catalyst can be used in a variety of catal |
| 6602404 |
Process for naphtha reforming |
August 5, 2003 |
| A process comprises separating a naphtha feed into a fraction comprising C.sub.7.sup.- hydrocarbons and a heavy C.sub.8+ fraction, separating the C.sub.8+ fraction into a light fraction comprising C.sub.8 and/or C.sub.8 -C.sub.9 which then is reformed to produce gasoline and/or a desired |
| 6602403 |
Process for selectively producing high octane naphtha |
August 5, 2003 |
| This invention is related to a catalytically cracked or thermally cracked naphtha stream. The naphtha stream is contacted with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having an average pore diameter less than about 0.7 nanometers at reaction conditions wh |
| 6596662 |
Production of alkylated aromatic compounds using dealuminated catalysts |
July 22, 2003 |
| A catalyst composition is disclosed comprising a zeolite having a non-framework aluminum content of about less than 25 percent of the total aluminum content, a bulk silica:alumina ratio of about 6.5 to about 10.0 and a unit cell size ranging from about 2.440 to about 2.464 nm. |
| 6596241 |
Tubular polymerization reactors and polymers made therein |
July 22, 2003 |
| Tubular reactor apparatus and processes are provided for improved polymerization including using chain transfer agents and multiple monomer feeds spaced lengthwise along the tubular reactor providing high conversions of monomer into polymer. The invention also relates to polymers mad |
| 6593506 |
Olefin recovery in a polyolefin production process |
July 15, 2003 |
| Disclosed is a method of recovering olefin from purge streams in a polyolefin production process. The method includes reacting a purge stream containing olefin and impurities with water in the presence of a hydrating catalyst to produce an alcohol containing stream. The impurities can |
| 6590055 |
Electrical devices from polymer resins prepared with ionic catalysts |
July 8, 2003 |
| This invention relates to olefin polymers particularly suited to satisfying the dielectric properties required in electrical device use. The olefin polymers can be prepared by contacting polymerizable olefin monomers with catalyst complexes of Group 3-11 metal cations and noncoordinating |
| 6590039 |
Silane grafted copolymers of an alpha-olefin and a vinyl aromatic monomer |
July 8, 2003 |
| Curable silylated copolymers based on olefin copolymers comprising at least one alpha-olefin and a vinyl aromatic monomer (alkyl styrene) are prepared by reacting the olefin copolymer with an olefinically unsaturated hydrolyzable silane in the presence of a free radical generating agent. |
| 6585784 |
Method for utilizing gas reserves with low methane concentrations for fueling gas turbines |
July 1, 2003 |
| 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 |
| 6584776 |
Method for generating power |
July 1, 2003 |
| A method and system for generating power include using a cogeneration power system having a gas turbine. The gas turbine has a compressor section for receiving air to be compressed. The compressed air is fed to a combustor section where it is mixed with fuel and the fuel is burned to pro |
| 6583227 |
Propylene polymers for films |
June 24, 2003 |
| This invention relates generally to crystalline propylene polymers, to methods for their production and to methods for their use in film applications. Specifically, this invention relates to crystalline propylene polymers comprising both propylene homopolymer and propylene copolymer. |
| 6582762 |
Sprayable hot melt adhesives |
June 24, 2003 |
| This invention relates to a process for atomizing, spiral spraying, oscillation spraying or melt blowing propylene copolymers onto a substrate comprising selecting a poly-alpha olefin inter-polymer comprising: A) from 60 to 94% of units derived from an alpha mono-olefin having from 3 |
| 6580010 |
Olefin recovery in an olefin production process |
June 17, 2003 |
| Disclosed is a method for recovering olefin in an oxygenate to olefin production process. The method includes reacting a stream containing olefin with water in the presence of a hydrating catalyst to produce an alcohol containing stream. The alcohol containing stream can be used as an |
| 6576686 |
Road marking compound comprising linear tetrablock copolymers |
June 10, 2003 |
| This invention relates generally to linear tetrablock copolymer compositions and their use in road marking applications. These tetrablock copolymers contain polystyrene, polyisoprene and polybutadiene components. Road marking compounds prepared from these copolymers further contain a |
| 6576306 |
Propylene polymers for films |
June 10, 2003 |
| This invention relates generally to crystalline propylene polymers, to methods for their production and to methods for their use in film applications. Specifically, this invention relates to crystalline propylene polymers comprising both propylene homopolymer and propylene copolymer. |
| 6573396 |
Co-production of dialkyl carbonates and diols with treatment of hydroxy alkyl carbonate |
June 3, 2003 |
| A process for the production of a dialkyl carbonate and a diol from a cyclic carbonate and an aliphatic monohydric alcohol wherein the cyclic carbonate and aliphatic monohydric alcohol are reacted in the presence of a transesterification catalyst to form a crude product stream which |
| 6573350 |
Branched semi-crystalline high-C3 ethylene-propylene compositions |
June 3, 2003 |
| Branched ethylene-propylene compositions which have improved melt strength and shear thinning are provided. The weight average branching index g' for the higher molecular weight region of the ethylene-propylene composition is less than 0.95. Additionally, a novel process is provided for |
| 6569965 |
Branched semi-crystalline high-C3 ethylene-propylene polymer compositions |
May 27, 2003 |
| Branched ethylene-propylene compositions which have improved melt strength and shear thinning are provided. The weight average branching index g' for the higher molecular weight region of the ethylene-propylene composition is less than 0.95. Additionally, a novel process is provided for |
| 6569400 |
Process for production of macrostructures of a microporous material |
May 27, 2003 |
| The invention involves a process for production of macrostructures of a microporous material. The process is characterized by the fact that seeds formed in or introduced by ion exchange or adsorption to a porous organic ion exchanger with the desired size, shape and porosity are made to |
