| Patent Number |
Title Of Patent |
Date Issued |
| 6355817 |
Optimized catalyst addition to enhance esterification catalyst performance |
March 12, 2002 |
| The present invention provides a process for the production of an ester, including reacting an alcohol with a carbonyl-like compound in the presence of a first esterification catalyst; and adding a second esterification catalyst to the reaction mixture at some time after initiation o |
| 6355757 |
Processing olefin copolymers |
March 12, 2002 |
| The invention is directed to essentially saturated hydrocarbon polymer composition comprising essentially saturated hydrocarbon polymers having A) a backbone chain, B) a plurality of essentially hydrocarbyl sidechains connected to A), said sidechains each having a number-average molecula |
| 6355711 |
High performance plasticizers from branched oxo alcohols |
March 12, 2002 |
| A plasticizer ester prepared from the catalytic reaction of (1) at least one branched C.sub.7 -C.sub.11 oxo alcohol prepared from C.sub.6 -C.sub.10 olefins via hydroformylation and having at least 50% methyl branching at the beta carbon, and (2) at least one acid or anhydride. |
| 6355592 |
Catalyst system of enhanced productivity and its use in polymerization process |
March 12, 2002 |
| A catalyst system comprising a Group 4 transition metal cation having bonded thereto (1) a single cyclopentadienyl ligand or polycyclic derivative thereof, (2) a Group 15 or 16 heteroatom ligand, said single cyclopentadienyl ligand or polycyclic derivative and said heteroatom ligand |
| 6350718 |
Seed treatment formulations containing phytobland systems |
February 26, 2002 |
| The invention relates to organic solvents that may be used in seed treatment formulations to increase the viability of seeds in the field. |
| 6350428 |
Preparation of zeolite-bound FAU structure type zeolite and use thereof |
February 26, 2002 |
| This invention relates to a process for producing zeolite-bound FAU structure type zeolite having excellent mechanical strength and containing reduced amounts of zeolite P and the use of the zeolite-bound FAU structure type zeolites produced by the process. The zeolite-bound FAU stru |
| 6346636 |
Siloxy substituted cocatalyst activators for olefin polymerization |
February 12, 2002 |
| This description addresses ionic compositions of matter comprising positively charged cations [Ct].sup.+ and negatively charged anions [A].sup.-, said anion comprising a central core Group 13 element to which are bound fluoroaryl ligands, at least one of said fluoroaryl ligands being |
| 6346571 |
Thermoplastic blend containing engineering resin |
February 12, 2002 |
| A thermoplastic composition which may be unvulcanized or vulcanized is provided which comprises a polymer blend of an elastomeric thermoplastic engineering resin and a halogen-containing copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a para-alkylstyrene. A process for preparing a |
| 6342623 |
Process for co-production of dialkyl carbonate and alkanediol |
January 29, 2002 |
| A method is provided for co-producing dialkyl carbonate and alkanediol by reacting alkylene carbonate with alkanol in the presence of an amorphous aluminosilicate catalyst containing alkali metal, alkaline earth metal, or a combination thereof. |
| 6342574 |
Propylene polymers incorporating macromers |
January 29, 2002 |
| A polyolefin composition is provided which consists essentially of isotactic polypropylene and, optionally, one or more comonomers, wherein the total comonomer content of the polyolefin composition is from 0 to 20 mole percent, and further, wherein the weight average branching index g' |
| 6342566 |
Propylene impact copolymers |
January 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. |
| 6339181 |
Multiple feed process for the production of propylene |
January 15, 2002 |
| This invention relates to a process to produce propylene from a hydrocarbon feed stream, preferably a naphtha feed stream, comprising C5 and C6 components wherein a light portion having a boiling point range of 120.degree. C. or less is introduced into a reactor separately from the o |
| 6339180 |
Process for producing polypropylene from C3 olefins selectively produced in a fluid catalytic cr |
January 15, 2002 |
| 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 |
| 6329477 |
Method for increasing diene conversion in EPDM type polymerizations |
December 11, 2001 |
| This invention relates to a method of making polymer compositions, e.g. EPDM compositions, in a multistage reactor with monomers chosen from ethylene, C.sub.3 -C.sub.8 alpha olefins, and a non conjugated diene. In particular, the invention relates to a process for improving diene con |
| 6326433 |
Isobutylene based elastomer blends having improved strength elasticity, and reduced permeability |
December 4, 2001 |
| 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 polymers with the isobutylene elastomers |
| 6323284 |
Method of preparation of crosslinked blends of amorphous and crystalline polymers |
November 27, 2001 |
| The present invention is broadly directed to a process for copolymerizing one or more alpha-olefins and one or more di-olefin monomers in the presence of at least one stereospecific metallocene catalyst system and at least one non-stereospecific metallocene catalyst system. Crosslinking |
| 6319998 |
Method for making polymer blends by using series reactors |
November 20, 2001 |
| This invention relates to a method of making polymer blends using series reactors and a metallocene catalyst. Monomers used by the invention are ethylene, a higher alpha-olefin (propylene most preferred), and optionally, a non-conjugated diene (ethylidene norbornene, i.e., ENB, most |
| 6319997 |
Continuous slurry polymerization volatile removal |
November 20, 2001 |
| 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 |
| 6319487 |
Synthesis of SAPO-44 |
November 20, 2001 |
| A method for making molecular sieves comprising silicoaluminophosphate 44 (SAPO-44) or substantially pure SAPO-44 and a method for using the molecular sieves so prepared for oxygenate conversion to olefins. |
| 6316683 |
Protecting catalytic activity of a SAPO molecular sieve |
November 13, 2001 |
| 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 |
| 6315890 |
Naphtha cracking and hydroprocessing process for low emissions, high octane fuels |
November 13, 2001 |
| The invention is related to a two step process wherein the first step comprises cracking an olefinic naphtha resulting in a cracked product having a diminished total concentration of olefinic species. The second step comprises hydroprocessing at least a portion of the cracked product, |
| 6312672 |
Sunscreen compositions containing copolymers of isoprene butadiene and/or styrene to provide imp |
November 6, 2001 |
| The invention provides waterproof sunscreen compositions which include polymers of isoprene, butadiene and/or styrene, particularity conjugated dienes which may be subject to some degree of hydrogenation. A copolymer of two different conjugated dienes is preferred. The polymers may be |
| 6310265 |
Isomerization of paraffins |
October 30, 2001 |
| This invention relates to a process for isomerizing paraffins comprising the step of contacting a feed containing paraffins with a catalyst comprising a synthetic porous crystalline material, designated MCM-68, which exhibits a distinctive X-ray diffraction pattern and has a unique c |
| 6307093 |
Organic compounds and processes for their manufacture |
October 23, 2001 |
| Esters of branched C.sub.9 alcohols suitable as plasticizers are formed by esterification of a C.sub.9 alcohol produced by the aldol condensation from propanal and a C.sub.6 aldehyde and hydrogenation, the propanal optionally having been made from natural gas streams. |
| 6306960 |
Articles formed from foamable polypropylene polymer |
October 23, 2001 |
| This invention relates generally to articles formed from polypropylene polymer foams and desirably isotactic polypropylene polymer foams. The polypropylene polymers are obtained from metallocene catalysis. The polypropylene polymer has molecular weight distributions and densities tha |
| 6306919 |
Thermosetting plastic foam |
October 23, 2001 |
| A thermosetting plastic foam solid formed from the reaction product of: (a) either polyisocyanate or isocyanate-based foam; (b) a polyol-based foam; (c) a catalyst which is capable of promoting the thermosetting reaction between the polyisocyanate or isocyanate-based foam and the polyol- |
| 6306790 |
Catalytic silicoaluminophosphates having an AEL structure, and their use in catalytic craking |
October 23, 2001 |
| Disclosed are silicoaluminophosphates (SAPOs) having unique silicon distributions, a method for their preparation and their use as catalysts for the catalytic cracking of hydrocarbon feedstocks. More particularly, the new SAPOs have a high silica: alumina ratio, and are prepared from |
| 6303691 |
Impact modification of polyamides |
October 16, 2001 |
| The invention relates to impact modifiers for polyamide compositions which improve the impact strength of the polyamides without adversely affecting the flexural modulus of the composition. The impact modifiers comprise blends of halogenated copolymers of a C.sub.4 to C.sub.7 isomonoolef |
| 6303688 |
Rubber toughened blends |
October 16, 2001 |
| This invention relates to a rubber toughened composition comprisinga) 5 to 50 weight percent of a composition comprising:an ethylene polymer having a composition distribution breadth index of 50% or more and containing 0.1 to about 10 weight percent of an unsaturated acid or anhydride, and a |
| 6303534 |
Silicoaluminophosphates having an AEL structure, and their preparation |
October 16, 2001 |
| Disclosed are silicoaluminophosphates (SAPOs) having unique silicon distributions and their preparation. More particularly, the new SAPOs have a high silica:alumina ratio, and are prepared from single phase synthesis solutions, or from microemulsions containing surfactants. |
| 6300536 |
Catalyst having a zeolitic core and zeolitic layer and the use of the catalyst for olefin oligom |
October 9, 2001 |
| A molecular sieve comprising a core having deposited thereon a surface layer, wherein the core is a zeolite containing silicon and at least one element selected from gallium and iron and the surface layer has a higher Si:Al ratio than that of the silicon:selected element ratio of the cor |
| 6300535 |
Preparation of zeolite bound by MFI structure type zeolite and use thereof |
October 9, 2001 |
| The preparation of zeolite bound zeolite comprising zeolite core crystals other than MFI structure zeolite which are bound by MFI structure type zeolite and the use of the zeolite bound by MFI structure type zeolite prepared by the process as an adsorbent or as a catalyst for hydrocarbon |
| 6300433 |
Olefin copolymerization process with bridged hafnocenes |
October 9, 2001 |
| The invention is directed to olefin polymerization processes using bridged hafnocene catalyst complexes that are surprisingly stable under high temperature olefin polymerization processes such that olefin copolymers can be prepared with high molecular weights and catalyst activities. Mor |
| 6300431 |
Phase transfer process with catalyst recovery |
October 9, 2001 |
| A process for catalytic recovery in a phase transfer process wherein heterogeneous reactions in a liquid-liquid two phase reaction systems using a phase transfer catalyst is improved by separating the two liquid phases with a membrane which retains the catalyst while passing the aque |
| 6299821 |
Melt extrusion processes and films produced thereby |
October 9, 2001 |
| The invention relates to a process for melt extruding a film layer of a thermoplastic olefin which comprises extruding the film having physical characteristics under process conditions selected by reference to the Draw ratio Dr and the Aspect ratio A such that draw resonance is avoided i |
| 6298652 |
Method for utilizing gas reserves with low methane concentrations and high inert gas concentrati |
October 9, 2001 |
| The invention is directed to a method of fueling gas turbines from natural gas reserves with relatively low methane concentrations. The invention uses such reserves to generate electric power. The invention permits the use of these reserves at significantly lower cost than by producing |
| 6297301 |
Thermoplastic elastomer compositions having improved processing properties |
October 2, 2001 |
| Thermoplastic elastomers having improved processability are prepared by incorporating one or more organic sulfate or sulfonate salts into blends of thermoplastic polymers and olefinic rubber and melt processing the mixture. The rubber component of the mixture is preferably at least p |
| 6294707 |
Fluidized bed reactor and process for producing 5-ethylidene-2-norbornene |
September 25, 2001 |
| 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. |
| 6294631 |
Hyperbranched polymers by coordination polymerization |
September 25, 2001 |
| Hyperbranched copolymers comprising at least one C.sub.2 -C.sub.20 .alpha.-monoolefin monomers and 0.2 to 20 mole % of at least one .alpha.,.omega.-non-conjugated diene monomers having 5 to 18 carbon atoms are prepared by coordination (metallocene) copolymerization of the monomers an |
| 6294625 |
Catalyst system of enhanced productivity and its use in polymerization process |
September 25, 2001 |
| A process for polymerizing olefins, diolefins, cyclic olefins or acetylenically unsaturated monomers, either alone or in combination with each other or with other polymerizable monomers with a catalyst system comprising a Group 4 transition metal cation having bonded thereto (1) a mo |
| 6294613 |
Compatibilized polymer blends formed using a multifunctional agent |
September 25, 2001 |
| A compatibilized blend of general purpose rubbers (GPR) and polymers containing benzylic halide groups are produced through solventless reactions utilizing a multifunctional agent containing a diene reactive group and a benzylic halo reactive group. |
| 6294493 |
Silicoaluminophosphates having an AEL structure |
September 25, 2001 |
| Disclosed are silicoaluminophosphates (SAPOs) having unique silicon distributions and high catalytic cracking activity, a method for their preparation and their use as FCC catalysts. More particularly, the new SAPOs have a high silica:alumina ratio and favorable Si atom distribution. |
| 6294081 |
Hydroprocessing with catalytic silicoaluminophosphates having an AEL structure |
September 25, 2001 |
| Disclosed are silicoaluminophosphates (SAPOs) having unique silicon distributions, a method for their preparation and their use as catalysts for the hydroprocessing of hydrocarbon feedstocks. More particularly, the new SAPOs have a high silica:alumina ratio, and are prepared from mic |
| 6291609 |
High temperature olefin polymerization process |
September 18, 2001 |
| The invention is directed to olefin polymerization processes using bridged hafnocene catalyst complexes comprising highly substituted noncoordinating anions that are surprisingly stable under high temperature olefin polymerization processes such that olefin copolymers having significant |
| 6291389 |
Cationic polymerization catalysts |
September 18, 2001 |
| A cationic catalyst composition comprising a reactive cation and a compatible non-coordinating anion is preferably used at a temperature of 20.degree. C. or less to produce olefin polymers, particularly polymers and copolymers of isobutylene. |
| 6288298 |
Naphtha cracking utilizing new catalytic silicoaluminophosphates having an AEL structure |
September 11, 2001 |
| Disclosed are silicoaluminophosphates (SAPOs) having unique silicon distributions, a method for their preparation and their use as catalysts for the catalytic cracking of hydrocarbon feedstocks. More particularly, the new SAPOs have a high silica:alumina ratio, and are prepared from |
| 6281162 |
Isomerization of olefins |
August 28, 2001 |
| A process for catalytically isomerizing olefins, particularly for isomerizing alkenyl bridged ring compounds to the corresponding alkylidene bridged ring compounds. The catalyst is prepared by forming a dispersion of a metallic alkali metal on a support with simultaneous exposure to |
| 6277355 |
Synthesis of ZSM-5 and ZSM-11 |
August 21, 2001 |
| High activity ZSM-5 and ZSM-11, with alpha values of 1000 to 3500, are produced by synthesis from a reaction mixture containing an organic directing agent selected from a non-cyclic amine having the formula (C.sub.2 H.sub.6 N).sub.n N.sub.m H.sub.q wherein n is 1, 2 or 3; m is 0 or 1 |
| 6271311 |
Ethylene .alpha.-olefin elastomeric polymer compositions having improved extrusion processibilit |
August 7, 2001 |
| Extruded shapes, profiles and parts in general based on an ethylene, alpha-olefin elastomeric polymer are manufactured utilizing a tailored approach to polymerization, leading to a polymer that delivers all of the benefits of metallocene based polymers, but without the drawbacks. Add |
| 6270856 |
Electrical cables having polymeric components |
August 7, 2001 |
| The invention relates to electric power cables, transmission lines or coaxial cables having at least one polymeric component. This polymeric component generally is a conducting, semiconducting, protective or insulating component. The electrical cables of this invention have improved |
