Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 5962360 | Process for the preparation of a magnesium halide supported metallocene catalyst The present invention is directed to a process for the preparation of a solid magnesium halide supported metallocene catalyst having a transition metal selected from the group consisting of IIIB, IVB, VB and VIB of the periodic table, which comprises prep... | 10/05/1999 |
| 5962362 | Unbridged monocyclopentadienyl metal complex catalyst and a process for polyolefin production There is provided a catalyst containing a transition metal precursor having the formula (C5 R15)MX3, an alcohol, a substituted bulky phenol, an aluminoxane, and optionally a support or spray drying material. The... | 10/05/1999 |
| 5962361 | Methods of making and using catalyst precursor A method of making a solid, substantially dry olefin polymerization procatalyst precursor is disclosed whereby a solid precursor containing magnesium and titanium is formed in a slurry or solution, the solid then is separated from the solution and then dr... | 10/05/1999 |
| 5955396 | Morphology-controlled olefin polymerization catalyst formed from an emulsion A solid, hydrocarbon-insoluble, olefin-polymerization catalyst component having substantially uniform particles useful in polymerizing olefins is formed by: reacting a magnesium-containing compound with carbon dioxide or sulfur dioxide; forming a two-phas... | 09/21/1999 |
| 5948720 | Catalyst for the production of flexible polyolefin compositions, methods for making and using same, and products thereof A catalyst for use in the production of flexible polyolefins using a pro-catalyst of (a) a magnesium halide, (b) an aluminum halide, (c) a tetravalent titanium halide, (d) an electron donor comprising at least one of 2,6-lutidine, 6-chloro-2-picoline, or ... | 09/07/1999 |
| 5945366 | Solid catalyst component for polymerization of olefins and catalyst A solid catalyst component (A1) for polymerization of olefins prepared by contact with a solid component (d) obtained by allowing (1) a solid component (a) obtained by allowing (i) a dialkoxymagnesium or diaryloxymagnesium, (ii) a titanium compound and (i... | 08/31/1999 |
| 5939346 | Catalyst system comprising an aryloxyaluminoxane containing an electron withdrawing group Aryloxyaluminoxanes containing the unit ##STR1## where R is unsubstituted or substituted aryl, such as phenyl or naphthyl, are useful as a cocatalysts in Ziegler-Natta and Kaminsky-type olefin polymerization catalysts. They can be formed by reaction ... | 08/17/1999 |
| 5932510 | Solid catalyst component and catalyst for polymerization of olefins The present invention provides a solid catalyst component (A) obtained by allowing a dialkoxymagnesium or diaryloxymagnesium, a titanium compound, a diester of phthalic acid and a cyclic or chain polysiloxane to come in contact with one another. Further, ... | 08/03/1999 |
| 5925587 | Supported polymerization catalyst component and system, Polymerization process using same for the production of ultra-fine particle size resins with improved crystallization rates A supported polymerization catalyst component and a catalyst system useful in the production of polyolefin resins that have a narrow particle size distribution and enhanced crystallization rates is provided. The supported polymerization component comprise... | 07/20/1999 |
| 5922631 | Liquid clathrate aluminoxane compositions as co-catalysts with transition metal catalyst compounds Olefin polymerization catalysts are described that comprise the reaction product of (a) a metallocene and/or a Ziegler-Natta catalyst compound (TICl4, etc.,) and (b) a liquid clathrate composition formed from (i) an aluminoxane, (ii) an organic... | 07/13/1999 |
| 5922632 | Vanadium based components and catalysts for the polymerization of olefins and polymerization processes using the same Catalysts component of the (co)polymerization of alpha-olefins CH2 .dbd.CHR, wherein R is hydrogen or an alkyl radical having from 1 to 8 carbon atoms, comprising a product of the composition: VCLy.z(b) wherein (b) represents an organic c... | 07/13/1999 |
| 5908903 | Metallocene catalyst systems containing lewis bases Catalyst systems which are suitable for polymerizing olefinically unsaturated compounds comprise as active constituents A) a metallocene complex of the metals of the fourth, fifth or sixth transition group of the Periodic Table of the Elements, B) a compound f... | 06/01/1999 |
| 5891817 | Electron donors for improved olefin polymerization The present invention provides a catalyst system that exhibits unprecedented catalyst efficiencies and control of desired properties in the polymer product. The catalyst system includes a new generation titanium catalyst in combination with an electron do... | 04/06/1999 |
| 5869585 | Multi-component catalyst systems for olefin polymerization Multi-component catalyst systems for polymerization and copolymerization of olefins consist of at least one transition metal complex containing a multidentate ligand and a three-component cocatalyst. The transition metal complexes with bidentate ligands L... | 02/09/1999 |
| 5869418 | Stereospecific catalyst system for polymerization of olefins Olefins or mixtures of olefins, particularly propene or mixtures of propene advantageously with ethene, can be polymerized using a Ziegler-Natta catalyst system containing, besides a transition-metal-based procatalyst and cocatalyst which is an organometa... | 02/09/1999 |
| 5866088 | Process for preparing anhydrous magnesium halide solution and process for preparing solid titanium catalyst component for olefin polymerization Disclosed is a process for preparing an anhydrous magnesium halide solution, comprising a step of distilling water off from an oxygen-containing organic solvent solution of hydrous magnesium halide containing at least calcium as an impurity, to prepare an... | 02/02/1999 |
| 5849654 | Catalyst for olefin polymerization and process for producing polyolefin using the same A catalyst for olefin polymerization comprising: (A) a solid catalyst component comprising a titanium compound, a magnesium compound, and a halogen compound; (B) an organoaluminum compound; (C) a first organosilicon compound represented by formula (I): ... | 12/15/1998 |
| 5849655 | Polyolefin catalyst for polymerization of propylene and a method of making and using thereof A method of forming a polyolefin catalyst component which includes chlorinating magnesium ethoxide, and then treating the product first with an electron donor, particularly diethyl phthalate or di-isobutyl phthalate, at a relatively low donor level, and t... | 12/15/1998 |
| 5834393 | Adduct of an organometal compound and a compatible anion, supported catalyst component supported catalyst processes for the preparation thereof A supported catalyst component comprising (a) a support material, an organometal compound, and (b) an activator compound comprising b.1) a cation which is capable of reacting with a transition metal metallocene compound to form a catalytically active tran... | 11/10/1998 |
| 5834572 | Process for the preparation of a support for catalysts, catalyst for the polymerization of olefins and process for the polymerization of olefins by means of this catalyst Process for the manufacture of a support containing silica and at least one constituent chosen from alumina and aluminium phosphate, according to which an alcohol, water, a silicon alkoxide and an acid are mixed under conditions such that gelling or preci... | 11/10/1998 |
| 5817590 | Catalyst for 댞 --olefin polymerization containing a Lewis base A catalyst for olefin polymerization is provided which comprises, as the components, a) a metallocene compound, b) an ionizing ionic compound, c) an organoaluminum compound, and d) a Lewis base compound. This catalyst has a stable active species and impro... | 10/06/1998 |
| 5817591 | Polyolefin catalyst from metal alkoxides or dialkyls, production and use A method of forming a polyolefin catalyst component which includes chlorinating a magnesium alkoxide, solubilizing the chlorinated magnesium alkoxide into a hydrocarbon solvent utilizing an alcohol, and then precipitating a solid from the solvent by the d... | 10/06/1998 |
| 5804524 | Process for a isotactic/syndiotactic polymer blend in a single reactor The present invention is a catalyst system to produce polymer blends in a single reactor, polymer blends of isotactic polyolefins and syndiotactic polyolefins. The catalyst system is a combination of at least one metallocene catalyst and at least one conv... | 09/08/1998 |
| 5783512 | Catalyst component dispersion comprising an ionic compound and solid addition polymerization catalysts containing the same A non-supported solid catalyst comprising (a) an ionic compound comprising a.1) a cation and a.2) an anion having up to 100 nonhydrogen atoms and said anion containing at least one substituent comprising an active hydrogen moiety, (b) a transition metal c... | 07/21/1998 |
| 5780379 | Process for the stereospecific polymerization of alpha-olefins and catalyst system which can be employed for this polymerization Process for the polymerization of alpha-olefins, which is carried out in the presence of a catalyst system comprising: (1) a solid based on completed titanium trichloride; (2) an organometallic compound of metals of groups IA, IIA, IIB and IIIB of the Periodic... | 07/14/1998 |
| 5780378 | Solid titanium catalyst component for olefin polymerization, process for preparing the same, catalyst for olefin polymerization and process for olefin polymerization A solid titanium catalyst component comprising (a) magnesium, (b) titanium, (c) a halogen, (d) a polyether, (e) a hydrocarbon and (f) an electron donor other than the polyether (d) as essential components is provided. Also a process for preparing a solid ... | 07/14/1998 |
| 5777050 | Process for polymerizing ethylene in the presence of a catalyst composition A process is disclosed for the homopolymerization of ethylene or copolymerization of ethylene with one or more -olefins with 3-12 carbon atoms and optionally one or more non-conjugated dienes in solution in the presence of a catalyst system contain... | 07/07/1998 |
| 5773537 | Ziegler-natta catalyst systems containing specific organosilicon compounds Catalyst systems of the Ziegler-Natta type contain, as active components a) a titanium-containing solid component in whose preparation a titanium compound, a compound of magnesium, a halogenating agent and an electron donor component are used, b) an aluminum c... | 06/30/1998 |
| 5767034 | Olefin polymerization catalyst with additive comprising aluminum-silicon composition, calixarene derivatives or cyclodextrin derivatives An olefin polymerization catalyst includes a halogen-containing magnesium compound; a titanium compound; and an additive selected from the group consisting of (a) a mixture of an aluminum alkoxide compound and polydimethylsiloxane, (b) an aluminosiloxane,... | 06/16/1998 |
| 5747404 | Polysiloxane supported metallocene catalysts Disclosed is a catalyst having the formula ##STR1## where each R is independently selected from aliphatic from C1 to C6 and aromatic from C6 to C10, each R5 is independently selected from H, R, a... | 05/05/1998 |
| 5747595 | Catalyst for the polymerization of olefines and processes for the polymerization of olefines using the same A catalyst for the polymerization of olefines comprises a solid catalytic component obtained by pre-polymerizing propylene in the presence of (A) a solid component containing magnesium, titanium, halogen and an electron-donating compound, (B) an organoalu... | 05/05/1998 |
| 5744678 | Oligomerization catalysts and process using the same for the production of olefinic oligomers An oligomerization catalyst according to the invention comprises a nickel compound (A); an organophosphoric compound (B); an organoaluminum compound (C); and a compound of the group consisting of carbon-halogen bond-containing compounds, oxoacid and salts... | 04/28/1998 |
| 5733842 | Method of making porous catalyst carrier without the addition of pore forming agents An improved catalyst carrier is formed by a process that comprises the use of ceramic particle components with particle sizes chosen to ensure that a desired degree of porosity is obtained without recourse to the use of organic burnout materials.... | 03/31/1998 |
| 5733835 | Cobalt containing catalyst system It has been determined that 1,3-butadiene monomer can be polymerized into cis-1,4-polybutadiene rubber utilizing a cobalt-based catalyst system which is comprised of (a) an organocobalt compound, (b) a trialkylaluminum compound and (c) hexafluoro-2-propan... | 03/31/1998 |
| 5728640 | Preparation of supported metallocene/aluminoxane solid catalyst A process for preparing a supported metallocene/aluminoxane solid catalyst comprises preparing a water-in-oil emulsion of water and an inert solvent by using an emulsifier, adding dropwise the emulsion to a solution of an organoaluminium compound in an in... | 03/17/1998 |
| 5728641 | Catalyst component for the polymerization of olefins According to the present invention there are provided a catalyst component, a catalyst using the catalyst component and a process using the catalyst, for the preparation of olefin polymers high in molecular weight and relatively wide in molecular weight d... | 03/17/1998 |
| 5705464 | Automatic dishwashing compositions comprising cobalt catalysts Automatic dishwashing detergent compositions comprising certain cobalt catalysts are provided. More specifically, the invention relates to automatic dishwashing detergents which provide enhanced cleaning/bleaching benefits (especially tea stain removal) t... | 01/06/1998 |
| 5703030 | Bleach compositions comprising cobalt catalysts Bleach compositions comprising certain carboxylate-containing cobalt catalysts are provided. More specifically, the invention relates to automatic dishwashing detergents and laundry compositions which provide enhanced cleaning/bleaching benefits (especial... | 12/30/1997 |
| 5703181 | Catalyst olefin polymerization and process for olefin polymerization using the same Disclosed are a catalyst for olefin polymerization comprising (A) a compound of a transition metal in Group IVB of the periodic table which contains a ligand having a cyclopentadienyl skeleton, (B) an organoaluminum compound and any one of (C1) a Brønste... | 12/30/1997 |
| 5698487 | Components and catalysts for the polymerization of olefins The present invention relates to components of catalysts for the polymerization of olefins comprising a metallocene compound and a magnesium halide which have particular values of porosity and surface area. In particular the components of the invention ha... | 12/16/1997 |
