Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8021538 | Hydroconversion catalysts and methods of making and using same Stable catalyst carrier impregnating solutions can be prepared using a component of a Group VIB metal, e.g., molybdenum, at high concentration, a component of a Group VIII metal, e.g., nickel, at low concentration, and a phosphorous component, e.g., phosphoric acid,... | 09/20/2011 |
| 7642212 | Hydroconversion catalysts and methods of making and using same Stable catalyst carrier impregnating solutions can be prepared using a component of a Group VIB metal, e.g., molybdenum, at high concentration, a component of a Group VIII metal, e.g., nickel, at low concentration, and a phosphorous component, e.g., phosphoric acid,... | 01/05/2010 |
| 7560407 | Hydroconversion catalysts and methods of making and using same Stable catalyst carrier impregnating solutions can be prepared using a component of a Group VIB metal, e.g., molybdenum, at high concentration, a component of a Group VIII metal, e.g., nickel, at low concentration, and a phosphorous component, e.g., phosphoric acid,... | 07/14/2009 |
| 7390766 | Hydroconversion catalysts and methods of making and using same Stable catalyst carrier impregnating solutions can be prepared using a component of a Group VIB metal, e.g., molybdenum, at high concentration, a component of a Group VIII metal, e.g., nickel, at low concentration, and a phosphorous component, e.g., phosphoric acid,... | 06/24/2008 |
| 7291575 | Active, heterogeneous bi- or tri-dentate catalyst A catalyst composition, and olefin polymerization process using same, formed from a mixture of a non-aluminoxane aluminum compound, an inorganic oxide and a transition metal bidentate or tridentate complex in certain prescribed proportions. The composition can be fo... | 11/06/2007 |
| 6943224 | Process for preparing supported transition metal catalyst systems and catalyst systems prepared thereby A process for forming a coordination catalyst system comprising sequentially or substantially simultaneously contacting: (I) pre-catalyst reactants comprising (a) at least one first ligand-containing reactant; and (b) at least one first transition metal reactant sui... | 09/13/2005 |
| 6686306 | Supported dual transition metal catalyst systems A coordination catalyst system comprising at least one metallocene or constrained geometry pre-catalyst transition metal compound, (e.g., rac-ethylene bis(indenyl)zirconium dichloride), at least one non-metallocene, non-constrained geometry, bidentate tra... | 02/03/2004 |
| 6660683 | NOx reduction compositions for use in FCC processes Compositions for reduction of gas phase reduced nitrogen species and NOx generated during a partial or incomplete combustion catalytic cracking process, preferably, a fluid catalytic cracking process, are disclosed. The compositions comprise (i... | 12/09/2003 |
| 6489410 | Supported catalyst composition for polymerization of olefins In accordance with this invention are methods for making the novel compositions and methods of using the compositions for polymerization of olefins. In its broadest form, the method of producing the supported catalytic composition of the present invention... | 12/03/2002 |
| 6451200 | Hydrothermally stable high pore volume aluminum oxide/swellable clay composites and methods of their preparation and use Porous composite particles are provided which comprise an aluminum oxide component, e.g., crystalline boehmite, and a swellable clay component, e.g., synthetic hectorite, intimately dispersed within the aluminum oxide component at an amount effective to i... | 09/17/2002 |
| 6403526 | Alumina trihydrate derived high pore volume, high surface area aluminum oxide composites and methods of their preparation and use Porous composite particles are provided which comprise an aluminum oxide component, e.g., crystalline boehmite having a crystallite size of from about 20 to about 200 Angstroms and additive component residue, e.g., silicate, phosphate, of a crystal size g... | 06/11/2002 |
| 6399535 | Coordination catalyst systems employing agglomerated metal oxide/clay support-activator and method of their preparation The present invention is directed to a coordinating catalyst system comprising at least one bidentate or tridentate ligand containing pre-catalyst transition metal compound, (e.g., 2,6-bis (2,4,6-trimethylarylamino)pyridyl iron dichloride), at least one ... | 06/04/2002 |
| 6329315 | Frangible, spray dried agglomerated supports, method of making such supports, and olefin polymerization catalysts supported thereon Frangible, spray dried agglomerate catalyst supports are provided, e.g. of silica gel, which possess a controlled morphology of microspheroidal shape, rough, scabrous appearance, and interstitial void spaces which penetrate the agglomerate surface and are... | 12/11/2001 |
| 6313061 | Method of making frangible spray dried agglomerated supports and olefin polymerization catalysts supported thereon A method of making frangible, spray dried agglomerate catalyst supports is provided, e.g. of silica gel, which possess a controlled morphology of microspheroidal shape, preferably a rough, scabrous appearance, and interstitial void spaces which penetrate ... | 11/06/2001 |
| 6303531 | Hydrothermally stable high pore volume aluminum oxide/swellable clay composites and methods of their preparation and use Porous composite particles are provided which comprise an aluminum oxide component, e.g., crystalline boehmite, and a swellable clay component, e.g., synthetic hectorite, intimately dispersed within the aluminum oxide component at an amount effective to i... | 10/16/2001 |
| 6228792 | Donor-modified olefin polymerization catalysts Supported Ziegler-Natta catalyst component adapted for the polymerization of ethylene is provided. More specifically, certain organomagnesium compounds (e.g., dibutylmagnesium) which do not contain an oxygen linkage between the organo moiety and the magne... | 05/08/2001 |
| 6165351 | Silica bayerite/eta alumina A silica-containing bayerite alumina is prepared by reacting aluminum sulfate, sodium aluminate and sodium silicate at a pH of about 10.5 to 11.5, preferably in the presence of finely divided magnesium hydroxide "seeds". The silica-containing bayerite is ... | 12/26/2000 |
| 6083394 | Composition and method for dehalogenation and degradation of halogenated organic contaminants A method of creating an environment which promotes dehalogenation and/or degradation of halogenated organic chemical contaminants in water, sediment, or soil by adding a combination of fibrous organic matter and certain multi-valent metal particles to the... | 07/04/2000 |
| 5939347 | Supported catalytic activator A supported polyolefin catalyst activator, comprising a four coordinate anion having a direct chemical bond to a catalyst carrier, wherein said anion is comprised of a neutral, three coordinate compound, MR3, and a carrier having oxygen contain... | 08/17/1999 |
| 5714424 | Multi-component polyolefin catalysts The present invention encompasses a monolithic multi-component composite polyolefin catalyst particle comprising at least two distinct supported catalyst components wherein each catalyst component is capable of producing a resin having a melt index differ... | 02/03/1998 |
| 5698758 | Aluminum phosphate composition with high pore volume and large pore diameter, process for its production and use thereof A homogeneous amorphous aluminum phosphate composition with a surface area of 100 to 300 m2 /g and a pore volume in pores with diameters of less than 1000 nm of at least 1.0 cm3 /g, in which phosphorus and aluminum are present in a m... | 12/16/1997 |
| 5238466 | Fuel additives derived from amido-amines The present invention is directed to a fuel additive comprising at least one adduct of (A) a polyolefin of 300 to 10,000 number average molecular weight substituted with at least 0.3 (e.g., from about 1 to 4) mono- or dicarboxylic acid producing moieties ... | 08/24/1993 |
| 4957650 | Lubricating oil composition containing dual additive combination for low temperature viscosity improvement There is disclosed a lubricating oil composition containing a dual additive combination for reducing the low temperature viscosity properties thereof. Such additive combination comprises a Component A, e.g., a polymethacrylate or esterified styrene/maleic... | 09/18/1990 |
| 4589991 | Process for the solubilization of mercaptobenzothiazole in a lubricating oil composition There is disclosed a process for the solubilization of a mercaptobenzothiazole amine salt with a solvent such as dihexyl phthalate which solubilized salt is in turn suitable for dissolution into a lubricating oil composition, such as an automatic transmis... | 05/20/1986 |
| 4558170 | Polyisobutylene process Polyisobutylene is prepared from a mixed C4 hydrocarbon feedstream using an AlCl3 --HCl catalyst system wherein the HCl is introduced separately into the feedstream to form organochloride in the feedstream. Polymer product having a v... | 12/10/1985 |
| 4554260 | Two stage process for improving the catalyst life of zeolites in the synthesis of lower olefins from alcohols and their ether derivatives A process for improving the catalyst life of zeolites employed in the conversion of alcohols (e.g. methanol) and/or their ether derivatives (e.g., dimethyl ether) wherein a suitable zeolite is modified in a 2-stage procedure by providing a controlled low ... | 11/19/1985 |
| 4533773 | Process for hydroxylating olefins in the presence of an osmium oxide catalyst and carboxylate salt co-catalyst A process for hydroxylating olefins, such as ethylene or propylene, using an osmium oxide catalyst such as OsO4, a carboxylate salt co-catalyst, such as sodium acetate, and organic hydroperoxide oxidant is disclosed.... | 08/06/1985 |
| 4533772 | Process for directly hydroxylating olefins using an osmium-halide catalyst and oxygen oxidant The process for hydroxylating olefins with oxygen in the presence of water, an osmium-halide (e.g., OsBr3) catalyst and transition metal containing co-catalyst (CuBr2) is disclosed.... | 08/06/1985 |
| 4517371 | Process for the synthesis of carboxylic anhydrides using a vanadium, phosphorus oxygen containing catalyst composition A vanadium, phosphorus oxygen containing catalyst composition capable of partially oxidizing hydrocarbons (e.g., n-butane) to form a carboxylic anhydride (e.g., maleic anhydride), a process for preparing this catalyst, and a process for using this catalys... | 05/14/1985 |
| 4499318 | Modified zeolite catalyst composition and process for alkylating toluene with methanol to form styrene A modified zeolite catalyst composition and process for using the catalyst composition to alkylate toluene (or derivative thereof) with methanol to form e.g. styrene and ethylbenzene (or derivatives thereof) is disclosed. The catalyst composition is exemp... | 02/12/1985 |
| 4499317 | Modified zeolite catalyst composition and process for alkylating toluene with methanol to form styrene A modified zeolite catalyst composition and process for using the catalyst composition to alkylate toluene (or derivative thereof) with methanol to form e.g. styrene and ethylbenzene (or derivatives thereof) is disclosed. The catalyst composition is exemp... | 02/12/1985 |
| 4497958 | Process for oxidizing a carboxylic anhydride with heterogeneously prepared vanadium-phosphorus-oxygen containing catalyst composition A heterogeneous process for preparing a vanadium-phosphorus-oxygen containing catalyst for use in the preparation of carboxylic anhydrides is disclosed. This process employs an activation procedure in an air-hydrocarbon atmosphere.... | 02/05/1985 |
| 4496779 | Process for the hydroxylation of olefins using molecular oxygen, an osmium containing catalyst, a copper co-catalyst, and a cycloaliphatic amine based promoter A process directed to the hydroxylation of olefins by reacting said olefins in the presence of oxygen, water, and a catalyst composition comprising (i) a catalytically active osmium containing compound, (ii) a Co-catalyst I comprising a copper containing ... | 01/29/1985 |
| 4496778 | Process for the hydroxylation of olefins using molecular oxygen, an osmium containing catalyst, a copper Co-catalyst, and an aromatic amine based promoter A process directed to the hydroxylation of olefins by reacting said olefins in the presence of oxygen, water, and a catalyst composition comprising (i) a catalytically active osmium containing compound, (ii) a Co-catalyst I comprising a copper containing ... | 01/29/1985 |
| 4483936 | Modified zeolite catalyst composition for alkylating toluene with methanol to form styrene A modified zeolite catalyst composition and process for using the catalyst composition to alkylate toluene (or derivative thereof) with methanol to form e.g. styrene and ethylbenzene (or derivatives thereof) is disclosed. The catalyst composition is exemp... | 11/20/1984 |
| 4483937 | Modified zeolite catalyst composition for alkylating toluene with methanol to form styrene A modified zeolite catalyst composition and process for using the catalyst composition to alkylate toluene (or derivative thereof) with methanol to form e.g. styrene and ethylbenzene (or derivatives thereof) is disclosed. The catalyst composition is exemp... | 11/20/1984 |
| 4482763 | Process for hydroxylating olefins in the presence of an osmium containing catalyst and organic halogenated hydrocarbon co-catalyst A process for hydroxylating olefins with an organic hydroperoxide and water in the presence of an osmium containing catalyst (e.g. OsO4) and an organic halogenated hydrocarbon co-catalyst (e.g., n-butyl iodide) is disclosed.... | 11/13/1984 |
| 4435521 | Heterogeneous process for preparing vanadium phosphorus oxygen containing catalyst composition A heterogeneous process for preparing a vanadium-phosphorus-oxygen containing catalyst for use in the preparation of carboxylic anhydrides is disclosed. This process employs an activation procedure in an air-hydrocarbon atmosphere.... | 03/06/1984 |
| 4429174 | Process for dehydrocoupling toluene using a modified faujasite zeolite catalyst composition A process for dehydrocoupling a hydrocarbon, such as toluene, using oxygen as the oxidant, in the presence of a crystalline zeolite of the faujasite structure containing a cation such as cesium, and a promoter, such as boron and/or phosphorus is disclosed... | 01/31/1984 |
| 4415745 | Process for the preparation of aromatic carbamates and isocyanates Production of aromatic polyisocyanates is achieved by a multireaction process comprising sequentially; the ammoxidation of a methylated aromatic, e.g. toluene; hydrolysis of the aromatic nitrile; conversion of the resultant amide to a carbamate; condensat... | 11/15/1983 |
