| Patent Number |
Title Of Patent |
Date Issued |
| 6207750 |
Propylene homopolymers and methods of making the same |
March 27, 2001 |
| 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 isotactic propylene homopolymer composition may be prepared in a |
| 6207748 |
Elastomeric ethylene copolymers for hot melt adhesives |
March 27, 2001 |
| Disclosed are hot melt adhesives comprising ethylene/alpha-olefin copolymers prepared with either supported or unsupported metallocene-alumoxane catalysts for applications in hot melt adhesives used in automotive product assembly, packaging and food packaging. These ethylene copolyme |
| 6204344 |
Continuous slurry polymerization volatile removal |
March 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 |
| 6198013 |
Toluene disproportionation process using a zeolite bound zeolite catalyst |
March 6, 2001 |
| 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 |
| 6197910 |
Propylene polymers incorporating macromers |
March 6, 2001 |
| A polyolefin composition is provided which consists essentially of isotactic polypropylene and, optionally, repeating units of one or more comonomers, wherein the total comonomer repeating unit content of the polyolefin composition is from 0 to 20 mole percent, and further, wherein t |
| 6197885 |
Vibration dampening and/or isolation vulcanizate having high temperature stability |
March 6, 2001 |
| Vulcanized rubber parts suitable to dampen vibrations generated by mechanical devices are disclosed. The parts are based on a cured composition comprising one or a mixture of a diolefin polymers, e.g., natural rubber, a halogenated copolymer of a C.sub.4 to C.sub.7 isomonoolefin, e.g |
| 6197285 |
Use of isoparaffin extenders for clear gel cosmetic compounds |
March 6, 2001 |
| 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 |
| 6194341 |
Mixed transition metal catalyst systems for olefin polymerization |
February 27, 2001 |
| The invention encompasses a mixed transition metal olefin polymerization catalyst system suitable for the polymerization of olefin monomers comprising one late transition metal catalyst system and at least one different catalyst system selected from the group consisting of late trans |
| 6191308 |
Process for the manufacture of oxygenates |
February 20, 2001 |
| .alpha.-Hydroxycarbonyl compounds are obtained from aldehydes or ketones by forming an acetal or ketal which is decomposed to a vinyl ether. The ether is selectively oxidized under conditions yielding an .alpha.-hydroxy-aldehyde or .alpha.-hydroxy-ketone with the carbonyl group prote |
| 6190638 |
Molecular sieves and process for their manufacture |
February 20, 2001 |
| Mixtures of synthesis mixtures of different alkalinity's produce small MFI crystals that are not spherical. |
| 6190533 |
Integrated hydrotreating steam cracking process for the production of olefins |
February 20, 2001 |
| An integrated process for converting a hydrocarbon feedstock having components boiling above about 100.degree. C. into steam cracked products is described. The process first involves passing the feedstock to a hydrotreating zone at a pressure in the range of from about 400 psig to ab |
| 6187983 |
Converting oxygenates to olefins in the presence of electromagnetic energy |
February 13, 2001 |
| A process comprises contacting an oxygenate feed with a molecular sieve catalyst in the presence of an electromagnetic energy and converting the oxygenate feed to olefins. |
| 6187065 |
Additives and oil compositions |
February 13, 2001 |
| A class of waxes improves the low temperature flow properties of oils. |
| 6184327 |
Elastomeric propylene polymers |
February 6, 2001 |
| 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 |
| 6184170 |
Metallocene catalyst systems |
February 6, 2001 |
| This invention relates generally to metallocene catalyst systems and to methods for their production and use. Specifically, this invention relates to a method for preparing metallocene catalyst systems using olefin additives which promote catalyst activity. |
| 6180808 |
Metallocene stabilized alumoxane |
January 30, 2001 |
| Stabilized alumoxane solutions are provided as well as a method for producing such solutions. The method generally involves the use of metallocene catalyst component(s) that when mixed with alumoxane solutions reduce the tendency for such solutions to form gels. |
| 6180736 |
High activity metallocene polymerization process |
January 30, 2001 |
| The disclosed invention relates to a polymerization process comprising contacting ethylene, and optionally, one or more olefinically unsaturated comonomers, with an active supported Group 3, 4, 5, or 6 metallocene catalyst system having an unsubstituted or substituted fused-ring cycl |
| 6179993 |
Process for obtaining olefins from residual feedstocks |
January 30, 2001 |
| A process for obtaining a substantial amount of olefinic products from a residual feedstock by use of a vapor short contact time conversion process unit comprised of a bed of fluidized heat transfer solids. The vapor short contact time process unit is operated at conditions which include |
| 6177519 |
Silane grafted copolymers of an isomonoolefin and a vinyl aromatic monomer |
January 23, 2001 |
| Curable silylated copolymers based on olefin copolymers comprising at least one C.sub.4 to C.sub.7 isomonoolefin 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 r |
| 6177387 |
Reduced odor and high stability aircraft turbine oil base stock |
January 23, 2001 |
| A synthetic ester composition exhibiting low odor, and high thermal and oxidative stability which comprises the reaction product of: (a) a polyol which comprises at least dipentaerythritol, e.g., technical grade pentaerythritol and mixtures of technical grade pentaerythritol or dipen |
| 6174962 |
Free radically cured thermoplastic vulcanizates of a polyolefin and a acrylate modified paraalky |
January 16, 2001 |
| A thermoplastic vulcanizate composition containing a thermoplastic and a functionalized copolymer of para-alkylstyrene-isoolefin is free radically cured, as for example, with a peroxide to yield a product having low impurities and good clarity. The thermoplastic typically can be a po |
| 6174930 |
Foamable polypropylene polymer |
January 16, 2001 |
| This invention relates generally to foamable polypropylene polymer, and more particularly a foamable isotactic polypropylene homopolymer obtained from metallocene catalysis and to their methods of production and articles formed therefrom. The foamable polypropylene polymer has molecular |
| 6172015 |
Polar monomer containing copolymers derived from olefins useful as lubricant and fuel oil additi |
January 9, 2001 |
| Polar monomer-containing copolymers derived from at least one .alpha., .beta. unsaturated carbonyl compound, such as alkyl acrylates and one or more olefins, such olefins including ethylene and C.sub.3 -C.sub.20 .alpha.-olefins such as propylene and 1-butene, which copolymers have (a) |
| 6172013 |
Lubricating oil composition comprising trinuclear molybdenum compound and diester |
January 9, 2001 |
| Lubricating oil compositions having enhanced friction coefficient and wear properties are provided by compositions of an oil of lubricating viscosity with additives of molybdenum and diesters of aliphatic or aromatic dicarboxylic acids. |
| 6162415 |
Synthesis of SAPO-44 |
December 19, 2000 |
| 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 conversions to olefins. |
| 6160191 |
Hydrocarbon conversion using large crystal zeolite catalyst |
December 12, 2000 |
| A process for converting hydrocarbons by contacting a hydrocarbon feedstream under hydrocarbon conversion conditions with a large crystal zeolite catalyst. The large crystal zeolite of the catalyst used in the hydrocarbon conversion process is made by heating an aqueous zeolite synth |
| 6160066 |
Monocyclopentadienyl metal compounds for ethylene-.alpha.-olefin-copolymer production catalysts |
December 12, 2000 |
| 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.- |
| 6156810 |
Solid nucleophilic reagent for conversion of benzylic halogen functionality on polymers to other |
December 5, 2000 |
| A solid nucleophilic reagent for the conversion of benzylic halogen functionality on polymers to other functionalities, and methods of making and using the same. |
| 6153565 |
Overbased metal-containing detergents |
November 28, 2000 |
| Phenate overbased detergents and salicylate overbased detergents with TBN: % surfactant ratios of 11 or more are useful marine diesel lubricant additives. |
| 6153552 |
Methods for making catalysts |
November 28, 2000 |
| Catalysts that are useful for hydrocarbon conversions and oxygenate conversions, and a method for making such catalysts. The method for making the catalysts comprises forming a mixture comprising molecular sieves comprising pores having a diameter smaller than about 10 Angstroms, an |
| 6150467 |
Electrical devices including ethylene, .alpha.-olefin, vinyl norbornene elastomers and ethylene |
November 21, 2000 |
| Elastomeric polymers including ethylene, alpha-olefin and vinyl norbornene are shown to have improved extrusion characteristics, improved electrical properties, improved cure characteristics compared to ethylene, alpha-olefin, non-conjugated diene elastomeric polymers containing non- |
| 6150293 |
Preparation of zeolite bound by MFI structure type zeolite and use thereof |
November 21, 2000 |
| 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 |
| 6149800 |
Process for increased olefin yields from heavy feedstocks |
November 21, 2000 |
| A process for upgrading petroleum feedstocks boiling in the distillate plus range, which feedstocks, when cracked, result in unexpected high yields of olefins. The feedstock is hydroprocessed in at least one reaction zone countercurrent to the flow of a hydrogen-containing treat gas. The |
| 6147180 |
Thermoplastic elastomer compositions from branched olefin copolymers |
November 14, 2000 |
| The invention relates to a thermoplastic elastomer composition comprising a branched olefin copolymer derived from olefinically unsaturated monomers capable of insertion polymerization having A) a T.sub.g as measured by DSC less than or equal to 10.degree. C.; B) T.sub.m greater than 80. |
| 6143942 |
Oligomerization and catalysts therefor |
November 7, 2000 |
| Oligomerization degree of olefins may be controlled by employing mixed molecular sieve catalysts. Propene may be trimerized to nonene using ZSM-5 and ZSM-22, especially in an extrudate admixture. |
| 6143854 |
Polymerization catalysts, their production and use |
November 7, 2000 |
| The invention generally relates to a catalyst, particularly a metallocene catalyst and catalyst system useful in the polymerization of olefins into a polymer product. The polymer product has a broad molecular weight distribution, a high molecular weight and a narrow composition distr |
| 6143701 |
Lubricating oil having improved fuel economy retention properties |
November 7, 2000 |
| A lubricating oil composition which exhibits improved fuel economy and fuel economy retention which contains the combination of an overbased oil soluble calcium detergent additive and an oil soluble trinuclear friction modifying molybdenum compound, the two components functioning to prov |
| 6143686 |
Supported ionic catalyst compositions |
November 7, 2000 |
| This invention relates to supported metallocene catalyst compositions useful for addition reactions of prochiral .alpha.-olefins. Polymers, specifically propylene polymers, produced with this catalyst possess higher stereoregularities and consequently higher melting points compared t |
| 6143682 |
Bimetallocyclic transition metal catalyst systems |
November 7, 2000 |
| This invention relates to single site catalyst systems comprising activated bimetallocyclic transition metal compounds, and the use of these catalyst systems for the polymerization of ethylenically and acetylenically unsaturated monomers. The bimetallocyclic compounds comprise two metal |
| 6143044 |
Oil additives, compositions and polymers for use therein |
November 7, 2000 |
| Compositions comprising an ethylene/vinyl acetate or propionate/vinyl linear carboxylate terpolymer improve the low temperature properties of oils having wax contents of at least 3% wt. |
| 6140432 |
Polymerization catalyst systems, their production and use |
October 31, 2000 |
| This invention is generally directed toward a supported catalyst system useful for polymerizing olefins. The method for supporting the catalyst of the invention provides for a supported metallocene catalyst which when utilized in a polymerization process substantially reduces reactor fou |
| 6140424 |
Multiple component thermoplastic elastomer compositions |
October 31, 2000 |
| Thermoplastic elastomer compositions which have good high temperature end use and good oil swell resistance are made by blending a high melting thermoplastic polymer containing a non-polar rubber and a polar rubber. Alternatively, a high melting thermoplastic polymer containing a non-pol |
| 6140279 |
Concentrates with high molecular weight dispersants and their preparation |
October 31, 2000 |
| Concentrates for lubricating oil compositions are prepared by mixing at elevated temperature:(i) at least one high molecular weight ashless dispersant;(ii) at least one oil-soluble overbased metal detergent; and (iii) at least one other concentrate additive provided that the additive |
| 6137022 |
Process for increasing the selectivity of a reaction to convert oxygenates to olefins |
October 24, 2000 |
| Disclosed is a method of making an olefin product from an oxygenate feedstock comprising, contacting the feedstock in a reaction zone containing 15 volume percent or less of a catalyst, preferably a catalyst comprising a silicoaluminophosphate molecular sieve. In order to obtain the |
| 6136991 |
Glycidyl ester adducts having increased glass transition temperatures |
October 24, 2000 |
| The invention provides for a purified glycidyl ester product prepared from neo acids wherein said ester product is recovered as a light fraction from a glycidyl ester reaction product composition that has been subjected to conditions of temperature and vacuum in a thin film, short pass |
| 6136930 |
Polymerization catalysts, their production and use |
October 24, 2000 |
| The invention generally relates to a catalyst, particularly a metallocene catalyst and catalyst system useful in the polymerization of olefins into a polymer product. Specifically, a catalyst system with (n-PrCp).sub.2 ZrCl.sub.2 exhibits high catalytic activity. |
| 6136742 |
Metallocene catalyst systems |
October 24, 2000 |
| This invention relates to metallocene catalyst systems and to methods for their production and use. Specifically, this invention relates to catalyst promoters which increase the activity of the metallocene catalyst systems. The promoters can be, for example, styrene or substituted styren |
| 6127497 |
Elevated pressure polymerization processes with late transition metal catalyst systems |
October 3, 2000 |
| The invention encompasses late transition metal catalyst systems and their use in polymerization processes, particularly in solution, 2-phase suspension and super-critical phase polymerization of ethylene-containing polymers. Preferred embodiments include the use of a late transition met |
| 6127323 |
Power transmission fluids containing alkyl phosphonates |
October 3, 2000 |
| The anti-shudder durability of power transmitting fluids, particularly automatic transmission fluids, is improved by incorporating a combination of alkyl phosphonates, ashless dispersants and metallic detergents. |
| 6127321 |
Oil soluble dispersant additives useful in oleaginous compositions |
October 3, 2000 |
| Hydrocarbyl substituted C.sub.4 to C.sub.10 monounsaturated dicarboxylic acid, anhydrides or esters, e.g. polyisobutenyl succinic anhydride, preferably made by reacting polymer of C.sub.2 to C.sub.10 monoolefin, preferably polyisobutylene, having a molecular weight of about 1500 to 5 |
