| Patent Number |
Title Of Patent |
Date Issued |
| 7473746 |
LTMC polymerization of unsaturated monomers |
January 6, 2009 |
| A process for polymerizing unsaturated monomers is disclosed. The process comprises polymerizing, in the presence of a late transition metal catalyst (LTMC), a variety of unsaturated monomers which are traditionally, some of which are exclusively, made by free radical polymerizations |
| 7473745 |
Preparation of multimodal polyethylene |
January 6, 2009 |
| Disclosed is a polyethylene composition. The composition comprises single-site multimodal resin A and single-site multimodal resin B, wherein resin A differs from resin B in molecular weight, in monomeric composition, in density, in long chain branch concentration or distribution, or |
| 7456241 |
Microfine adhesive powders and process |
November 25, 2008 |
| Microfine powder adhesive blends are provided. The powders are comprised of a polyolefin base resin component and acid or acid derivative functionalized polyolefin component with one or more optional components. The microfine powders are produced from melt blended adhesive products u |
| 7446221 |
Process for making tricyclodecenyl esters |
November 4, 2008 |
| A practical, economical process for making tricyclodecenyl esters is disclosed. After reacting a lower carboxylic acid and a dicyclopentadiene in the presence of triflic acid to form the ester, the reaction mixture is distilled in the presence of a base to isolate a fragrance-quality |
| 7439290 |
Linear low density polyethylene compositions and films |
October 21, 2008 |
| Linear low density polyethylene compositions suitable for the production of films having improved breathability are provided. The compositions which are comprised of a linear low density polyethylene base resin, a functionalized polyolefin and a polyester polyol are melt blended under |
| 7429635 |
Preparation of ultra high molecular weight linear low density polyethylene |
September 30, 2008 |
| Disclosed is a method of preparing an ultra-high molecular weight, linear low density polyethylene with a catalyst system that comprises a bridged indenoindolyl transition metal complex, a non-bridged indenoindolyl transition metal complex, an alumoxane activator and a boron-containing |
| 7423098 |
Polyethylene process |
September 9, 2008 |
| An ethylene polymerization process is disclosed. Ethylene is polymerized in two slurry reaction zones with a C.sub.6-C.sub.10 alpha-olefin in the presence of a single-site catalyst capable of making a high molecular weight polyolefin. The process yields medium density and linear low |
| 7404889 |
Hydrocarbon thermal cracking using atmospheric distillation |
July 29, 2008 |
| A method for thermally cracking a hydrocarbonaceous feed wherein the feed is first processed in an atmospheric thermal distillation step to form a light gasoline and atmospheric residuum mixture. The light gasoline/residuum combination is gasified at least in part in a vaporization s |
| 7402546 |
Magnesium chloride support |
July 22, 2008 |
| The invention relates to supports comprising inorganic oxide particles coated with magnesium chloride and a method for making them. The inorganic oxide has a mean particle diameter of less than 5 microns and is used as a seed to crystallize magnesium chloride from solution. The magne |
| 7399809 |
Modifying polyethylene made by Ziegler or single-site catalyst with free radical initiator |
July 15, 2008 |
| A method of modifying a polyethylene is disclosed. In the method ethylene or a mixture of ethylene and a C3-C10 .alpha.-olefin is polymerized in an organic solvent with a Ziegler or single-site catalyst to form an initial polyethylene solution. The initial polyethylene solution is then r |
| 7396892 |
Process for removal of intermediate hydrogen from cascaded polyolefin slurry reactors |
July 8, 2008 |
| Multimodal polyolefin polymers may be prepared in series-connected polymerization reactors where a prior reactor is a slurry reactor employing light solvent as the slurry medium and hydrogen to limit polymer molecular weight, the polymer product from the prior reactor being substanti |
| 7396449 |
Olefin production utilizing condensate feedstock |
July 8, 2008 |
| A method for utilizing natural gas condensate as a feedstock for an olefin production plant wherein the feedstock is subjected to vaporization and separation conditions that remove light hydrocarbons from the condensate for thermal cracking in the plant, and leave liquid distillate for |
| 7392988 |
Rotary seal |
July 1, 2008 |
| A rotary seal housing having opposing ends, a first fluid conducting slot at one of the opposing ends, a pair of spaced apart fluid conducting slots at the other opposing end, and sets of apertures connecting the first fluid conducting slot with the pair of fluid conducting slots, the |
| 7375162 |
Filled propylene polymer compositions having improved melt strength |
May 20, 2008 |
| Filled propylene polymer compositions having significantly improved melt strength are provided. The compositions are blends of propylene polymer, mineral filler with an ethylene polymer component consisting of an ethylene plastomer and a silane-containing ethylene polymer. |
| 7374664 |
Olefin production utilizing whole crude oil feedstock |
May 20, 2008 |
| A method for utilizing whole crude oil as a feedstock for the pyrolysis furnace of an olefin production plant wherein the feedstock is subjected to vaporization conditions until substantially vaporized with minimal mild cracking but leaving some remaining liquid from the feedstock, the |
| 7374661 |
Thermal cracking |
May 20, 2008 |
| A method for thermally cracking a hydrocarbonaceous feed material using a combustion fuel fired furnace wherein at least part of the combustion fuel employed in the furnace is syngas. |
| 7348466 |
Solvent extraction |
March 25, 2008 |
| In a method for the solvent extraction of butadiene from a mixture of hydrocarbons having four carbon atoms per molecule, which method inherently produces tars, the extraction process is operated with a tar loading level, relative to the solvent employed, of no more than about 1.6 wt |
| 7348371 |
Cellulosic-reinforced composites having increased resistance to water absorption |
March 25, 2008 |
| Cellulosic-reinforced composites having increased resistance to water absorption are provided. The improved composites are obtained using a mixture of high density polyethylene and silane copolymer with the cellulosic filler. |
| 7326823 |
Aromatic compound recovery |
February 5, 2008 |
| A method for the solvent extraction recovery of an aromatic wherein an aromatic extract is formed that contains the aromatic and non-aromatics that are both lighter than and heavier than the aromatic, analyzing at least two separate groups of lighter and heavier non-aromatics in the |
| 7273914 |
Olefin polymerization methods |
September 25, 2007 |
| Methods for making polyolefins are disclosed. One method comprises polymerizing an olefin in the presence of a catalyst system comprising a single-site complex, an agglomerated metal oxide/clay support-activator, and an ionic borate. Including an ionic borate with the support-activator |
| 7270740 |
Startup of an olefins production plant |
September 18, 2007 |
| A method for starting up an olefin production plant without venting gases to the atmosphere wherein an artificial feed is employed in the compression zone of the plant while the furnace and quench zones remain idle, and gases from the compression and refrigeration zones of the plant |
| 7238765 |
High density polyethylene and insulation compositions for wire and cable |
July 3, 2007 |
| High density polyethylene having reduced melt elasticity and a reduced level of highly short-chain branched polymer molecules and wire and cable insulation compositions based thereon having improved strippability and oxidative stability are provided. |
| 7238754 |
Solid state process to modify the melt characteristics of polyethylene resins and products |
July 3, 2007 |
| A process for improving the melt characteristics of polyethylene resins is provided. The process involves contacting a polyethylene resin powder with a low level of free radical initiator at a temperature below the melting point of the resin. |
| 7232604 |
Flame retardant crosslinkable compositions and articles |
June 19, 2007 |
| Flame retardant crosslinkable polyolefin compositions useful for the production of films, sheets and membranes are provided. The compositions are comprised of ethylene-silane copolymer, plastomer, flame retardant filler and, optionally, silanol condensation catalyst. |
| 7230056 |
Catalyst preparation method |
June 12, 2007 |
| A two-step catalyst preparation method is disclosed. First, a support is combined with an indenoindolyl Group 3-10 metal complex and a first activator comprising an alkyl alumoxane to give a supported complex. The supported complex is subsequently combined with a second activator com |
| 7230054 |
Polymer resins with improved environmental stress crack resistance |
June 12, 2007 |
| Resins comprising a relatively high-density, low-molecular-weight polyethylene component and a relatively low-density, high-molecular-weight ethylene copolymer component and methods of making the resins are disclosed. The rheological polydispersity of the high-density component excee |
| 7196147 |
Olefin polymerization process with improved operability and polymer properties |
March 27, 2007 |
| Ethylene and optional comonomers are polymerized in the presence of an organozinc compound and a catalyst system to produce an ethylene polymer. The catalyst system comprises a bridged indenoindolyl Group 3-10 transition metal complex and an activator. The organozinc compound is used |
| 7189675 |
Olefin polymerization catalyst on plasma-contacted support |
March 13, 2007 |
| A method for preparing an olefin polymerization catalyst is disclosed. An inorganic oxide is contacted with plasma and a transition metal compound is supported on the contacted inorganic oxide. The method is fast, convenient, and avoids many of the problems associated with known methods |
| 7183348 |
Shear modification of polyolefin-clay nanocomposites |
February 27, 2007 |
| A method for modifying polyolefin-clay nanocomposites is disclosed. The method comprises shearing a melt of solution-prepared nanocomposites at an effective shear rate. The modified nanocomposite shows significantly decreased complex melt viscosity, storage modulus, and loss modulus. |
| 7175918 |
Polyolefin compositions |
February 13, 2007 |
| The present invention relates to polyolefin compositions that incorporate an acrylic/polyether comb-branched copolymer, articles made from the compositions, such as polyolefin films and polyolefin fibers, and methods for making the compositions and the articles. |
| 7159603 |
Mechanical hot tapping method |
January 9, 2007 |
| A method of mechanically hot tapping petroleum equipment that contains a hydrocarbonaceous fluid in its interior by drilling an aperture in such equipment while employing cooling by cyclic drilling and/or refrigeration, the equipment drilling being carried out in a manner such that t |
| 7153985 |
Ethylene oxide production |
December 26, 2006 |
| A process for the formation of ethylene oxide wherein the presence of at least one hydrocarbon having four carbon atoms per molecule in the recycle loop gas of the process is used as an indicator of impending post-ignition conditions. |
| 7151145 |
Process for narrowing short-chain branching distribution in two-step ethylene polymerizations an |
December 19, 2006 |
| An improved two-step polymerization process wherein ethylene homopolymer is produced in a first reactor and ethylene copolymer having narrowed short-chain branching distribution is prepared in a second reactor. Narrowed short-chain branching distribution of the copolymer is achieved |
| 7144964 |
Solution polymerization process utilizing preassembled bimetallic Ziegler-Natta catalyst |
December 5, 2006 |
| A high-temperature solution process for polymerizing ethylene is disclosed. The polymerization is performed in the presence of a preassembled bimetallic Ziegler-Natta catalyst and an aluminum compound. Molecular modeling calculations predict that the bimetallic Ziegler-Natta catalyst |
| 7125939 |
Olefin polymerization with polymer bound single-site catalysts |
October 24, 2006 |
| Disclosed is a process for polymerizing olefins. The process comprises polymerizing one or more olefins with a single-site catalyst in two or more polymerization stages. The catalyst comprises a transition metal complex, an activator, and a hydroxyl functional polymer. The complex, t |
| 7125929 |
Adhesive composition having improved clarity for coextruded barrier films |
October 24, 2006 |
| Adhesive compositions useful for adhering barrier resins are provided. The adhesives are a blend of ethylene-a-olefin copolymer base resin having hard and soft phases which form a network structure and a functionally modified ethylene-.alpha.-olefin copolymer. |
| 7125483 |
Corrosion control in olefin production plants |
October 24, 2006 |
| A method for reducing acid corrosion and products of acid corrosion in a thermal cracking plant, the acid corrosion products being compounds of iron, chromium, nickel, lead, cadmium, manganese, mercury, magnesium, calcium, sodium, copper, zinc, lead, molybdenum, and aluminum, the imp |
| 7122497 |
Olefin polymerization catalyst system |
October 17, 2006 |
| A catalyst system useful for polymerizing olefins is disclosed. The catalyst system comprises a cocatalyst and a supported transition metal prepared from a halogen-containing Group 4 6 transition metal compound and an organoaluminum-siloxane containing mixture. The latter mixture, wh |
| 7094723 |
Catalysts containing at least one heterocyclic ligand for improving the catalysts' performance o |
August 22, 2006 |
| The present invention provides a non-metallocene catalyst comprising a complex having one or more ligands coordinated a transition metal. The catalyst contains substituents bonded to the transition metal through a heteroatom such as oxygen or sulfur. Furthermore, the complex includes a |
| 7091291 |
Olefin polymerization process |
August 15, 2006 |
| A process for polymerizing an alpha-olefin is disclosed. The polymerization is performed in the presence of a catalyst system comprising a three-membered titanacycle. A wide variety of titanacycles can be readily prepared, making this a versatile and inexpensive olefin polymerization |
| 7091272 |
Olefin polymerization with pyridine moiety-containing single-site catalysts |
August 15, 2006 |
| An olefin polymerization process is disclosed. The polymerization is performed in the presence of a clay, an activator, and a transition metal complex that has at least one pyridine moiety-containing ligand. The presence of clay increases the catalyst activity. The process is suitable |
| 7090767 |
Hydrodesulfurization of gasoline fractions |
August 15, 2006 |
| A method for processing a gasoline range hydrocarbon stream wherein a single reactor/distillation tower stream is fractionated into a light fraction and a heavy fraction, the light fraction is hydrodesulfurized, the heavy fraction is optionally hydrocracked and then hydrodesulfurized, |
| 7084221 |
Polymerization catalyst system containing polyether-modified aluminoxane |
August 1, 2006 |
| A modified aluminoxane is disclosed. Aluminoxane compounds are modified with glycol ethers or polyethers. The modified aluminoxanes are effective activators for single-site catalysts. Catalyst activated with the modified aluminoxane produces polyolefin with increased melt flow index, |
| 7078577 |
DihydroDicyclopentadiene production |
July 18, 2006 |
| A method for forming dihydroDicyclopentadiene comprises mixing a source of dicyclopentadiene with at least one solvent and at least one reactive component in the presence of a source of hydrogen and a selective hydrogenation catalyst, the solvent and reactive component being readily |
| 7078362 |
Carbene donor-modified Ziegler-Natta catalysts |
July 18, 2006 |
| A modified Ziegler-Natta catalyst system comprising a titanium or vanadium compound, a magnesium compound, a carbene donor, and an aluminum compound is disclosed. The invention includes a process which comprises polymerizing an alpha-olefin in the presence of the carbene-modified Zie |
| 7078081 |
Preparation of polyethylene films |
July 18, 2006 |
| An essentially transparent, high density polyethylene film is disclosed. The film has a haze of 20% or less, a gloss of 40% or greater, and density within the range of 0.935 to 0.948 g/cc. The film is made by a high-stalk blown extrusion process and then uniaxially oriented in the ma |
| 7074976 |
Propylene production |
July 11, 2006 |
| A method for making propylene from alpha olefins, internal linear olefins and isoolefins wherein the alpha olefins are subjected to a combination of hydrogenation and double bond isomerization to form additional internal linear olefins, the internal linear olefins are disproportionat |
| 7073530 |
Storage tank de-inventorying |
July 11, 2006 |
| A method for emptying a liquid storage tank that has a floating roof which becomes stationery a finite distance above the tank bottom, wherein, after the roof becomes stationery, liquid is continued to be withdrawn from inside the tank while vapor is removed from within the tank in a |
| 7071259 |
Functionalized propylene polymer compositions and composites containing same |
July 4, 2006 |
| Functionalized propylene polymer compositions useful as coupling/compatibilizing agents are provided. The compositions are a mixture of two different functionalized propylene polymers. Polypropylene composites containing fillers and/or non-compatible resins and formulated using the m |
| 7056097 |
System and method for monitoring the mechanical condition of a reciprocating compressor |
June 6, 2006 |
| A method for monitoring the mechanical condition of a reciprocating compressor having a packed-plunger cylinder is provided. An end assembly is attached to one end of the cylinder, and the strain of at least one component of the end assembly is measured as the plunger reciprocates wi |
