| Patent Number |
Title Of Patent |
Date Issued |
| 6489413 |
Olefin polymerization process with alkyl-substituted metallocenes |
December 3, 2002 |
| 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 |
| 6486278 |
Ethylene copolymerization process |
November 26, 2002 |
| This invention is a solution process for the preparation of ethylene-.alpha.-olefin-diolefin copolymers comprising contacting ethylene, one or more .alpha.-olefin monomer, and one or more cyclic diene monomer, with a catalyst composition comprising a bridged, bis(cyclopentadienyl) zi |
| 6486219 |
Methanol, olefin, and hydrocarbon synthesis process |
November 26, 2002 |
| An improved method for the production of methanol and hydrocarbons from a methane-containing gas, such as natural gas. The improved method integrates a hydrocarbon synthesis unit with a methanol synthesis unit. The invention combines a syngas stream from a steam reformer, a syngas st |
| 6486088 |
High activity carbenium-activated polymerization catalysts |
November 26, 2002 |
| This application discloses triphenyl carbenium NCA's as catalyst activators for a class of asymmetrically bridged hafnocene catalyst precursors. These catalsyst precursors are activated into olefin polymerization catalysts and are suitable for gas, solution, and slurry-phase polymerizati |
| 6482999 |
Method for improving light olefin selectivity in an oxygenate conversion reaction |
November 19, 2002 |
| A method for converting oxygenates to light olefins. The method comprises contacting, in a reactor, a feedstock comprising oxygenates with a molecular sieve catalyst under conditions effective to convert the feedstock to a product including light olefins and by-products, the contacti |
| 6482998 |
Process for converting oxygenates to olefins with direct product quenching for heat recovery |
November 19, 2002 |
| The present invention relates to a process for catalytically converting a feedstock comprising an oxygenate to olefins utilizing a heat exchange device to transfer heat from at least a portion of an effluent of an oxygenate conversion reactor to the feedstock to cause at least a portion |
| 6479598 |
Petroleum resins and their production with BF3 catalyst |
November 12, 2002 |
| 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 |
| 6479597 |
Raman analysis system for olefin polymerization control |
November 12, 2002 |
| Method of olefin polymerization in a reactor, such as a slurry loop olefin polymerization reactor, is provided. The method includes conducting in-situ, real time spectroscopic analysis of one or more reactor constituents. The reactor constituents analyzed may be present in the reacto |
| 6476173 |
Propylene homopolymers and methods of making the same |
November 5, 2002 |
| This invention relates to isotactic propylene homopolymer compositions obtained from metallocene catalysis wherein the polymer has a molecular weight distribution (Mw/Mn) in the range of from about 2.5 to about 20.0. The isototic propylene homopolymer composition may be prepared in a |
| 6476171 |
Easy processing linear low density polyethylene |
November 5, 2002 |
| A polymer of ethylene and at least one alpha olefin having at least 5, carbon atoms obtainable by a continuous gas phase polymerization using supported catalyst of an activated molecularly discrete catalyst such as a metallocene in the substantial absence of an aluminum alkyl based s |
| 6476164 |
Carbenium cationic complexes suitable for polymerization catalysts |
November 5, 2002 |
| 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 |
| 6476136 |
Polymer compositions derived from vinyl neo C9-C13 carboxylic acid esters |
November 5, 2002 |
| The present invention relates generally to compositions prepared by polymerizing vinyl neo C.sub.9 -C.sub.13 carboxylic acid esters. Such compositions include latex compositions that are formed by polymerizing vinyl neo C.sub.9 -C.sub.13 carboxylic acid esters with ethylenically unsa |
| 6475946 |
Olefin polymerization catalysis with aryl substituted carbenium cationic complexes |
November 5, 2002 |
| 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 |
| 6472474 |
Propylene impact copolymers |
October 29, 2002 |
| This invention relates to propylene impact copolymer compositions. In particular, these unique and improved compositions can be produced using conventional, commercial-scale processes. |
| 6464996 |
Thickened organic fluid/surfactant compositions and use thereof in pesticidal compositions |
October 15, 2002 |
| Disclosed are novel thickened organic fluid/surfactant compositions that are uniform, flowable and dispersible in water. Also disclosed are novel pesticidal compositions comprising a pesticide and the novel thickened organic fluid/surfactant composition. |
| 6462131 |
Polymer blend compatibilization using isobutylene-based block copolymers |
October 8, 2002 |
| Compatibilized blends of an isobutylene polymer and an unsaturated diene polymer are prepared by utilizing a compatibilizing agent comprising a block/graft copolymer containing polyisobutylene segments and C.sub.4 to C.sub.6 alkyl-substituted styrene polymer segments, such as poly(t- |
| 6459006 |
Selective methylation to para-xylene using fuel syngas |
October 1, 2002 |
| It has been discovered that para-xylene (PX) can be synthesized with improved selectivity by reacting an aromatic compound such as toluene and/or benzene with a reactant(s) from fuel syngas such as a combination of hydrogen and carbon monoxide and/or carbon dioxide and/or methanol,or |
| 6458736 |
Hydrocarbon conversion process using a zeolite bound zeolite catalyst |
October 1, 2002 |
| There is provided a process for converting hydrocarbons which utilizes a zeolite bound zeolite catalyst that has enhanced performance when utilized in hydrocarbon conversion processes, e.g., catalytic cracking, alkylation, disproportionation of toluene, isomerization, and transalkylation |
| 6455750 |
Process for selectively producing light olefins |
September 24, 2002 |
| The invention is related to a catalyst and a process for selectively producing light (i.e., C.sub.2 -C.sub.4) olefins from 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 crystallin |
| 6455749 |
Method for increasing light olefin yield by conversion of a heavy hydrocarbon fraction of a prod |
September 24, 2002 |
| A method for increasing light olefin yield during conversion of oxygenates to olefins comprising: contacting an oxygenate feed in a primary reactor with a non-zeolitic molecular sieve catalyst under conditions effective to produce a first product comprising light olefins; separating the |
| 6455748 |
Protecting catalytic activity of a SAPO molecular sieve |
September 24, 2002 |
| 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 |
| 6455747 |
Method for converting oxygenates to olefins |
September 24, 2002 |
| The present invention provides a method for converting a feed containing oxygenates to olefins and comprises the following steps: providing a feed including an oxygenate; contacting the feed in a reactor apparatus with a catalyst including a molecular sieve, the contacting taking place u |
| 6455652 |
Aromatic modified crude C5 based resins |
September 24, 2002 |
| This invention relates to novel resins, blends of the novel resins with base polymers and a process for producing a resin comprising combining a reactor feed blend comprising: (a) at least 2 weight % of isoprene, (b) at least 2 weight % of one or more of dicyclopentadiene, substituted |
| 6455458 |
Tethered monocyclopentadienyl polymerization catalysts |
September 24, 2002 |
| The invention is a polymerization catalyst system derived from tethered, heteroatom-bridged monocyclopentadienyl transition metal compound precursor from Group 4 of the Periodic Table of the Elements. The catalyst system comprises an activated, tethered pair of Group 4 transition metal |
| 6451938 |
Polymerization catalyst system comprising heterocyclic fused cyclopentadienide ligands |
September 17, 2002 |
| The invention relates to a polymerization catalyst system comprising a catalytic complex formed by activating a transition metal compound which comprises a metal selected from group 3 through 10 of the periodic table, preferably from group 4, 5, or 6 of the periodic table, and a group 13 |
| 6451915 |
Thermoplastic elastomers having improved processing and physical property balance |
September 17, 2002 |
| A thermoplastic elastomer formed by a process comprising the steps of dynamically vulcanizing a rubber within a mixture that includes the rubber, from about 10 to about 80 percent by weight of a thermoplastic resin based upon the total weight of the rubber and the thermoplastic combi |
| 6448460 |
Maintaining acid catalyst sites in SAPO molecular sieves |
September 10, 2002 |
| This invention is directed to a molecular sieve having acid catalyst sites and a method of maintaining the acid catalyst sites of a template-containing silicoaluminophosphate molecular sieve. The method comprises providing a template-containing silicoaluminophosphate molecular sieve |
| 6448322 |
Stabilization of halogenated rubber |
September 10, 2002 |
| Halogenated isobutylene-p-methylstyrene polymers are stabilized against discoloration with a weak base such as 100 to 500 ppm sodium bicarbonate. The additive is added to the rubbery polymers after dewatering in the finishing step of their manufacture. The curability of the stabilized |
| 6448197 |
Method for making a metal containing small pore molecular sieve catalyst |
September 10, 2002 |
| A molecular sieve and a molecular sieve catalyst containing a surface heat impregnated with a metal. The molecular sieve is heated in the presence of a metal containing solution at a temperature between 30.degree. C. and 400.degree. C. then separated from the metal containing solution. T |
| 6447791 |
Use of isoparaffin extenders for clear gel cosmetic compositions |
September 10, 2002 |
| A clear cosmetic gel composition comprising: (a) an aqueous phase comprising: (i) water, and (ii) at least one cosmetically active ingredient; (b) a coupling agent; (c) an oil phase comprising: (i) a silicone-containing solvent, and (ii) an isoparaffin solvent having a boiling range |
| 6444868 |
Process to control conversion of C4+ and heavier stream to lighter products in oxygenate convers |
September 3, 2002 |
| 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 |
| 6444774 |
Propylene polymers for fibers and fabrics |
September 3, 2002 |
| This invention relates generally to fibers and fabrics prepared using crystalline propylene polymer compositions comprising both propylene homopolymer and propylene copolymer. The propylene polymer compositions are prepared using at least one metallocene catalyst system in a polymeri |
| 6444768 |
Production of polyisobutylene copolymers |
September 3, 2002 |
| 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 |
| 6444712 |
Methanol, olefin, and hydrocarbon synthesis process |
September 3, 2002 |
| An improved method for the production of methanol and hydrocarbons from a methane-containing gas, such as natural gas. The improved method integrates a hydrocarbon synthesis unit with a methanol synthesis unit without the need to recycle unreacted syngas exiting the methanol synthesi |
| 6444623 |
Methods for the production of sulfurized diphenyloxides and compositions made therefrom |
September 3, 2002 |
| The present invention relates to methods for production of sulfurized diphenyloxides wherein a diphenyloxide is reacted with elemental sulfur in the presence of solid acid catalyst. The solid acid catalyst can be a zeolite or a catalytic amount of a Friedel-Crafts compound. The present |
| 6444302 |
Breathable films and method for making |
September 3, 2002 |
| The present invention relates to a cold-drawn breathable film formed from a blend of a soft polymer component and a hard polymer component. The soft polymer component (SPC) is a copolymer of a major olefinic monomer and a minor olefinic monomer. The major olefinic monomer is either ethyl |
| 6441262 |
Method for converting an oxygenate feed to an olefin product |
August 27, 2002 |
| The invention provides a method of making ethylene, propylene, and butylene by contacting a molecular sieve catalyst with an oxygenate to convert a portion of the oxygenate to a product containing olefin; separating the catalyst from the olefin product and directing a portion of the sepa |
| 6441261 |
High pressure oxygenate conversion process via diluent co-feed |
August 27, 2002 |
| This invention relates to a method for converting an oxygenate feedstock to an olefin product. In particular, this invention relates to a method for converting an oxygenate feedstock, including a diluent co-feed, to an olefin product, by contacting the feedstock with a silicoaluminophosp |
| 6441252 |
Apparatus for producing phenol using reactive distillation |
August 27, 2002 |
| An apparatus for producing phenol and acetone from cumene hydroperoxide comprises a reactive distillation column comprising at its upper portion a distillation column and at its lower portion a catalyst bed. |
| 6441251 |
Production of phenol |
August 27, 2002 |
| A process for producing phenol and acetone from cumene hydroperoxide is described in which the cumene hydroperoxide is contacted with a solid-acid catalyst comprising an inorganic, porous, crystalline material, designated as M41S, exhibiting, after calcination, an x-ray diffraction patte |
| 6440894 |
Methods of removing halogen from non-zeolitic molecular sieve catalysts |
August 27, 2002 |
| Methods of calcining non-zeolitic molecular sieve catalyst to remove most, if not nearly all, of halogen contained in the catalyst. One method includes heating the catalyst in a low moisture environment, followed by contacting the heated catalyst with air and/or steam. Another method |
| 6440882 |
Fibers and fabrics prepared with propylene impact copolymers |
August 27, 2002 |
| This invention relates generally to novel fibers and fabrics. Specifically, these fibers are prepared using propylene impact copolymer compositions. Fabrics, particularly nonwoven fabrics, formed from these fibers exhibit improved elongation properties. |
| 6437208 |
Making an olefin product from an oxygenate |
August 20, 2002 |
| Disclosed is a method for making olefin product from an oxygenate-containing feedstock. In the method, a silicoaluminophosphate molecular sieve catalyst is contacted with the oxygenate-containing feedstock in a reactor at an average catalyst feedstock exposure index of at least 1.0. |
| 6436869 |
Iron, cobalt and/or nickel containing ALPO bound SAPO molecular sieve catalyst for producing ole |
August 20, 2002 |
| An aluminophosphate bound silicoaluminophosphate catalyst contains iron, cobalt and/or nickel is useful in a method of making a product including an olefin from a feedstock containing an oxygenate. The method includes contacting an oxygenate feedstock with the catalyst, which is an a |
| 6433104 |
Hydrogenation process |
August 13, 2002 |
| This invention relates to an improved resin hydrotreating process which maintains resin softening point and aromaticity as well as catalyst lifetime. The process is particularly useful for hydrotreating resins containing one or more halogen residues. Pressures are maintained at 2000 |
| 6429348 |
Method for selectively producing propylene by catalytically cracking an olefinic hydrocarbon fee |
August 6, 2002 |
| The invention provides a method for converting an olefinic hydrocarbon feedstock to propylene comprising: contacting a hydrocarbon feedstock under catalytic cracking conditions with a catalyst comprising a catalyst selected from the group consisting of SAPO catalysts, MeAPO catalysts, |
| 6428901 |
Films formed from blends of polyethylene and polypropylene |
August 6, 2002 |
| Disclosed are compositions comprising: a) an ethylene polymer component having a melting temperature greater than or equal to about 75.degree. C., an ethylene crystallinity level of 5 weight percent or more, and a narrow compositional distribution; and b) a propylene polymer component ha |
| 6426313 |
Polymeric supported catalysts for olefin polymerization |
July 30, 2002 |
| The described invention provides a low fouling, high particle density polymerization process and an olefin polymerization cocatalyst activator composition comprising a cross-linked polymer bead having a surface area of from about 1 to 20 m.sup.2 /g to which are bound a plurality of n |
| 6423795 |
Tetramethylcyclopentadienyl titanium compounds for ethylene-.alpha.-olefin-copolymer production |
July 23, 2002 |
| Described are certain tetramethylcyclopentadienyl titanium compounds, catalyst systems comprising such compounds and an activator, and to a process using such catalyst systems for the production of polyolefins, particularly ethylene-.alpha.-olefin copolymers having a high molecular w |
| 6423793 |
Elastomeric propylene polymers |
July 23, 2002 |
| A thermoplastic elastomer is provided comprising a branched olefin polymer having crystalline sidechains and an amorphous backbone wherein at least 90 mole percent of the sidechains are isotactic or syndiotactic polypropylene and at least 80 mole percent of the backbone is atactic po |
